{"id":1468,"date":"2015-11-02T14:46:51","date_gmt":"2015-11-02T07:46:51","guid":{"rendered":"http:\/\/vafs.gov.vn\/en\/?p=1468"},"modified":"2023-11-23T12:25:57","modified_gmt":"2023-11-23T05:25:57","slug":"vietnam-journal-of-forest-science-number-3-2015","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/en\/2015\/11\/vietnam-journal-of-forest-science-number-3-2015\/","title":{"rendered":"Vietnam Journal of Forest Science Number 3-2015"},"content":{"rendered":"
\n

\"Capture\"<\/a><\/p>\n

T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 3 – 2015<\/strong><\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
1.<\/td>\n\n

T\u00ecnh h\u00ecnh th\u1ef1c hi\u1ec7n chi\u1ebfn l\u01b0\u1ee3c nghi\u00ean c\u1ee9u l\u00e2m nghi\u1ec7p Vi\u1ec7t Nam (2008 – 2020) – c\u00e1c kho\u1ea3ng tr\u1ed1ng v\u00e0 nh\u1eefng th\u00e1ch th\u1ee9c<\/p>\n<\/td>\n

\n

Nguy\u1ec5n Xu\u00e2n Qu\u00e1t
\nHo\u00e0ng V\u0103n Th\u1eafng<\/p>\n<\/td>\n

\n

The implementation of forestry research strategy (2008 – 2020)
\nin Vietnam – The gaps and challenges<\/p>\n<\/td>\n

\n

3873<\/p>\n<\/td>\n<\/tr>\n

2.<\/td>\n\n

Nghi\u00ean c\u1ee9u \u1ea3nh h\u01b0\u1edfng n\u1ed3ng \u0111\u1ed9 c\u1ee7a c\u00e1c thu\u1ed1c IAA, IBA v\u00e0 NAA t\u1edbi kh\u1ea3 n\u0103ng t\u1ea1o r\u1ec5 v\u00e0 th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u t\u1edbi sinh tr\u01b0\u1edfng Th\u00f4ng \u00f4carpa (Pinus oocarpa<\/i> Schiede Ex Schlechtendal) \u1edf giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m<\/p>\n<\/td>\n

\n

B\u00f9i V\u0103n Tr\u1ecdng
\nNguy\u1ec5n Thanh Nguy\u00ean
\nL\u00ea H\u1ed3ng \u00c9n<\/p>\n<\/td>\n

\n

Effect of concentrations of hormone IAA, IBA and NAA on the rooting rate and potting mixes on the growth of P<\/i>inus oocarpa<\/i><\/p>\n<\/td>\n

\n

3882<\/p>\n<\/td>\n<\/tr>\n

3.<\/td>\n\n

\u1ea2nh h\u01b0\u1edfng c\u1ee7a ph\u00e2n b\u00f3n v\u00e0 \u00e1nh s\u00e1ng \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y con Ho\u00e0ng \u0111\u1eb1ng (Fibraurea tinctoria<\/i> Lour) trong giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m<\/p>\n<\/td>\n

\n

Ph\u1ea1m H\u1eefu H\u1ea1nh
\nNguy\u1ec5n Huy S\u01a1n<\/p>\n<\/td>\n

\n

Effects of fertilizer and light cover on growth
\nof Fibraurea tinctoria<\/i> Lour at the stage
\nof nursery<\/p>\n<\/td>\n

\n

3889<\/p>\n<\/td>\n<\/tr>\n

4.<\/td>\n\n

M\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m v\u1eadt h\u1eadu c\u1ee7a c\u00e2y B\u00e1 b\u1ec7nh (E<\/i>urycoma longifolia<\/i> Jack.) \u1edf L\u00e2m \u0110\u1ed3ng<\/p>\n<\/td>\n

\n

Nguy\u1ec5n Th\u00e0nh M\u1ebfn
\nHo\u00e0ng Thanh Tr\u01b0\u1eddng<\/p>\n<\/td>\n

\n

Phenological characteristics of Eurycoma longifolia<\/i>
\nin Lam Dong, Vietnam<\/p>\n<\/td>\n

\n

3897<\/p>\n<\/td>\n<\/tr>\n

5.<\/td>\n\n

Nghi\u00ean c\u1ee9u \u0111\u1ed9ng th\u00e1i c\u1ea5u tr\u00fac r\u1eebng t\u1ef1 nhi\u00ean \u1edf v\u01b0\u1eddn qu\u1ed1c gia V\u0169 Quang – t\u1ec9nh H\u00e0 T\u0129nh<\/p>\n<\/td>\n

\n

Nguy\u1ec5n Th\u1ecb Thu Hi\u1ec1n<\/p>\n<\/td>\n

\n

Research on dynamic structure of natural forests in the Vu Quang National Park – Ha T\u0129nh province<\/p>\n<\/td>\n

\n

3904<\/p>\n<\/td>\n<\/tr>\n

6.<\/td>\n\n

\u1ea2nh h\u01b0\u1edfng c\u1ee7a \u0111ai cao
\n\u0111\u1ebfn m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m
\nl\u00e2m h\u1ecdc c\u1ee7a r\u1eebng t\u1ef1
\nnhi\u00ean l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh c\u00f3 D\u1ebb anh (Castanopsis piriformis<\/i>) ph\u00e2n b\u1ed1
\nt\u1ea1i \u0110\u1eafk G\u2019long,
\nt\u1ec9nh \u0110\u1eafk N\u00f4ng<\/p>\n<\/td>\n

\n

Nguy\u1ec5n To\u00e0n Th\u1eafng
\nL\u01b0\u01a1ng V\u0103n D\u0169ng
\nL\u00ea Xu\u00e2n Tr\u01b0\u1eddng
\nNguy\u1ec5n V\u0103n H\u00e0o<\/p>\n<\/td>\n

\n

Effect of altitude on silvicutural characteristics of evergreen broad-leaved forest with distributed Castanopsis piriformis<\/i> in Dak G\u2019Long, Dak Nong province<\/p>\n<\/td>\n

\n

3911<\/p>\n<\/td>\n<\/tr>\n

7<\/td>\n\n

K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u00e1i c\u00e1c lo\u00e0i c\u00e2y ng\u1eadp m\u1eb7n v\u00f9ng ven bi\u1ec3n B\u1eafc b\u1ed9<\/p>\n<\/td>\n

\n

H\u00e0 Th\u1ecb M\u1eebng
\n\u0110inh Thanh Giang<\/p>\n<\/td>\n

\n

Results on morphology of mangrove species in the Northern Coastal region<\/p>\n<\/td>\n

\n

3919<\/p>\n<\/td>\n<\/tr>\n

8<\/td>\n\n

Sinh tr\u01b0\u1edfng c\u1ee7a c\u00e1c lo\u00e0i c\u00e2y tr\u1ed3ng trong m\u00f4 h\u00ecnh ph\u1ee5c h\u1ed3i r\u1eebng ng\u1eadp m\u1eb7n \u1edf \u0111\u1ea7m nu\u00f4i t\u00f4m b\u1ecf hoang t\u1ea1i x\u00e3 \u0110\u1ed3ng Rui, huy\u1ec7n Ti\u00ean Y\u00ean, t\u1ec9nh Qu\u1ea3ng Ninh<\/p>\n<\/td>\n

\n

\u0110inh Thanh Giang<\/p>\n<\/td>\n

\n

Growth of rehabilitation mangrove model in fallow shrimp farming at Dong Rui commune, Tien Yen district, Quang Ninh province<\/p>\n<\/td>\n

\n

3925<\/p>\n<\/td>\n<\/tr>\n

9<\/td>\n\n

\u0110\u00e1nh gi\u00e1 t\u00ecnh h\u00ecnh g\u00e2y h\u1ea1i, \u0111\u1eb7c \u0111i\u1ec3m nh\u1eadn bi\u1ebft v\u00e0 t\u1eadp t\u00ednh c\u1ee7a lo\u00e0i Leptoscybe invasa<\/i> Fisher&La Salle. g\u00e2y u b\u01b0\u1edbu b\u1ea1ch \u0111\u00e0n \u1edf
\nVi\u1ec7t Nam<\/p>\n<\/td>\n

\n

L\u00ea V\u0103n B\u00ecnh
\nPh\u1ea1m Quang Thu
\n\u0110\u00e0o Ng\u1ecdc Quang
\nv\u00e0 Nguy\u1ec5n Ho\u00e0i Thu<\/p>\n<\/td>\n

\n

Evaluating damage status, morphological characteristics and behavior of Leptoscybe invasa<\/i> Fisher&La Salle causing eucalyptus gall wasp in Vietnam<\/p>\n<\/td>\n

\n

3931<\/p>\n<\/td>\n<\/tr>\n

10<\/td>\n\n

\u0110\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc v\u00e0 ph\u00f2ng tr\u1eeb lo\u00e0i ong Leptoscybe invasa<\/i> Fisher&La Salle g\u00e2y u b\u01b0\u1edbu b\u1ea1ch \u0111\u00e0n<\/p>\n<\/td>\n

\n

L\u00ea V\u0103n B\u00ecnh
\nPh\u1ea1m Quang Thu<\/p>\n<\/td>\n

\n

Biology and control of eucalyptus gall wasp Leptoscybe invasa<\/i> Fisher & La Salle<\/p>\n<\/td>\n

\n

3940<\/p>\n<\/td>\n<\/tr>\n

11<\/td>\n\n

Ph\u00e2n l\u1eadp, tuy\u1ec3n ch\u1ecdn m\u1ed9t s\u1ed1 ch\u1ee7ng vi khu\u1ea9n n\u1ed9i sinh t\u1ea1o ch\u1ea5t k\u00edch th\u00edch sinh tr\u01b0\u1edfng Indole-3-Acetic ax\u00edt (IAA) v\u00e0 \u0111\u1ed1i kh\u00e1ng n\u1ea5m g\u00e2y b\u1ec7nh th\u1ed1i c\u1ed5 r\u1ec5 c\u00e2y th\u00f4ng<\/p>\n<\/td>\n

\n

Nguy\u1ec5n Th\u1ecb Thu\u00fd Nga<\/p>\n<\/td>\n

\n

Isolating and screening bacterial endophytes producing growth regulator Indole-3-Acetic acid (IAA) and antifungal compounds against fusarium oxysporum damping-off disease of Pinus merkusii<\/i><\/p>\n<\/td>\n

\n

3948<\/p>\n<\/td>\n<\/tr>\n

12<\/td>\n\n

Nghi\u00ean c\u1ee9u t\u1ea1o ch\u1ebf ph\u1ea9m \u0111a ch\u1ee7ng vi sinh v\u1eadt v\u00e0 \u0111\u00e1nh gi\u00e1 hi\u1ec7u qu\u1ea3 c\u1ee7a ch\u1ebf ph\u1ea9m \u0111\u1ed1i v\u1edbi s\u1ea3n xu\u1ea5t c\u00e2y con Th\u00f4ng nh\u1ef1a (Pinus merkusii<\/i>) \u1edf v\u01b0\u1eddn \u01b0\u01a1m<\/p>\n<\/td>\n

\n

Nguy\u1ec5n Th\u1ecb Th\u00fay Nga<\/p>\n<\/td>\n

\n

Study on the production of multi-racial microorganism inoculum and evaluating its effectiveness for producing Pinus merkusii<\/i> seedlings in the nursery<\/p>\n<\/td>\n

\n

3960<\/p>\n<\/td>\n<\/tr>\n

13<\/td>\n\n

Hi\u1ec7u l\u1ef1c ph\u00f2ng ch\u1ed1ng n\u1ea5m m\u1ee5c v\u00e0 c\u00f4n tr\u00f9ng h\u1ea1i g\u1ed7\u00a0 c\u1ee7a s\u01a1n pu c\u00f3 ph\u00e2n t\u00e1n nano TiO2<\/sub>, SiO2<\/sub>, ZnO, Nanoclay<\/p>\n<\/td>\n

\n

B\u00f9i V\u0103n \u00c1i
\nNguy\u1ec5n Duy V\u01b0\u1ee3ng
\nNguy\u1ec5n Th\u1ecb H\u1eb1ng
\nL\u00ea Ng\u1ecdc Hoan
\nHo\u00e0ng Th\u1ecb T\u00e1m<\/p>\n<\/td>\n

\n

Preventive action against rotting fungi and wood boring insects of pu coating enhanced with dispersed nano particles of TiO2<\/sub>, SiO2<\/sub>, ZnO, Nanoclay<\/p>\n<\/td>\n

\n

3969<\/p>\n<\/td>\n<\/tr>\n

14<\/td>\n\n

Nghi\u00ean c\u1ee9u kh\u1ea3 n\u0103ng ph\u00f2ng ch\u1ed1ng n\u1ea5m m\u1ee5c
\nv\u00e0 m\u1ed1i h\u1ea1i g\u1ed7 c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u nano TiO2<\/sub>, SiO2<\/sub>,
\nZnO, Nanoclay<\/p>\n<\/td>\n

\n

B\u00f9i V\u0103n \u00c1i
\nNguy\u1ec5n Duy V\u01b0\u1ee3ng
\nB\u00f9i Th\u1ecb Th\u1ee7y
\nL\u00ea Ng\u1ecdc Hoan
\nHo\u00e0ng Th\u1ecb T\u00e1m<\/p>\n<\/td>\n

\n

Studying on the protective effectiveness of wood treated with nanomaterials TiO2<\/sub>, ZnO, CuO, SiO2<\/sub>, nanoclay against wood destroying basidiomycetes and termites<\/p>\n<\/td>\n

\n

3977<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

1. T\u00ccNH H\u00ccNH TH\u1ef0C HI\u1ec6N CHI\u1ebeN L\u01af\u1ee2C NGHI\u00caN C\u1ee8U L\u00c2M NGHI\u1ec6P VI\u1ec6T NAM (2008 – 2020) – C\u00c1C KHO\u1ea2NG TR\u1ed0NG V\u00c0 NH\u1eeeNG TH\u00c1CH TH\u1ee8C<\/strong><\/p>\n

Nguy\u1ec5n Xu\u00e2n Qu\u00e1t1<\/sup>, Ho\u00e0ng V\u0103n Th\u1eafng2
\n<\/sup>1<\/sup><\/i>Vi\u1ec7n Qu\u1ea3n l\u00fd r\u1eebng b\u1ec1n v\u1eefng v\u00e0 Ch\u1ee9ng ch\u1ec9 r\u1eebng
\n2<\/sup>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeTChi\u1ebfn l\u01b0\u1ee3c nghi\u00ean c\u1ee9u l\u00e2m nghi\u1ec7p Vi\u1ec7t Nam giai \u0111o\u1ea1n 2008 – 2020 \u0111\u1ebfn nay \u0111\u00e3 qua h\u01a1n n\u1eeda ch\u1eb7ng \u0111\u01b0\u1eddng. Vi\u1ec7c xem x\u00e9t l\u1ea1i nh\u1eefng g\u00ec \u0111\u00e3 l\u00e0m \u0111\u01b0\u1ee3c, nh\u1eefng g\u00ec ch\u01b0a \u0111\u01b0\u1ee3c \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh, b\u1ed5 sung v\u00e0 \u0111\u1ea9y m\u1ea1nh th\u1ef1c hi\u1ec7n t\u1ed1t h\u01a1n trong giai \u0111o\u1ea1n ti\u1ebfp theo l\u00e0 c\u1ea7n thi\u1ebft. B\u00e0i vi\u1ebft n\u00e0y d\u1ef1a tr\u00ean c\u01a1 s\u1edf tham kh\u1ea3o c\u00f3 ch\u1ecdn l\u1ecdc, t\u1ed5ng h\u1ee3p h\u1ec7 th\u1ed1ng c\u00e1c k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u v\u1ec1 l\u00e2m nghi\u1ec7p trong nh\u1eefng n\u0103m qua, \u0111\u1ed1i chi\u1ebfu v\u1edbi ba v\u0103n b\u1ea3n c\u00f3 li\u00ean quan l\u00e0 Quy\u1ebft \u0111\u1ecbnh ph\u00ea duy\u1ec7t chi\u1ebfn l\u01b0\u1ee3c ph\u00e1t tri\u1ec3n l\u00e2m nghi\u1ec7p c\u1ee7a Th\u1ee7 t\u01b0\u1edbng Ch\u00ednh ph\u1ee7, Chi\u1ebfn l\u01b0\u1ee3c nghi\u00ean c\u1ee9u l\u00e2m nghi\u1ec7p v\u00e0 \u0110\u1ec1 \u00e1n t\u00e1i c\u01a1 c\u1ea5u ng\u00e0nh l\u00e2m nghi\u1ec7p \u0111\u00e3 \u0111\u01b0\u1ee3c B\u1ed9 NN&PTNT ph\u00ea duy\u1ec7t v\u1edbi c\u00e1c ch\u1ec9 ti\u00eau \u0111\u1ecbnh l\u01b0\u1ee3ng \u0111\u1ec3 xem x\u00e9t v\u00e0 \u0111\u00e1nh gi\u00e1. Qua \u0111\u00f3 \u0111\u00e3 r\u00fat ra m\u1ed9t s\u1ed1 n\u1ed9i dung v\u1ec1 t\u00ecnh h\u00ecnh th\u1ef1c hi\u1ec7n Chi\u1ebfn l\u01b0\u1ee3c nghi\u00ean c\u1ee9u l\u00e2m nghi\u1ec7p Vi\u1ec7t Nam l\u00e0: (i) Nh\u1eefng th\u00e0nh qu\u1ea3 ch\u00ednh \u0111\u1ea1t \u0111\u01b0\u1ee3c l\u00e0 \u0111\u00e3 ph\u00e1t tri\u1ec3n \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 k\u1ebft qu\u1ea3 ch\u00ednh c\u1ee7a giai \u0111o\u1ea1n tr\u01b0\u1edbc; l\u01b0\u1ee3ng gi\u00e1 gi\u00e1 tr\u1ecb m\u00f4i tr\u01b0\u1eddng, ch\u1ecdn t\u1eadp \u0111o\u00e0n c\u00e2y tr\u1ed3ng ch\u1ee7 l\u1ef1c v\u00e0 ch\u1ee7 y\u1ebfu; c\u1ea3i thi\u1ec7n n\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng ngu\u1ed3n gi\u1ed1ng; k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng, th\u00e2m canh r\u1eebng tr\u1ed3ng… (ii) Nh\u1eefng kho\u1ea3ng tr\u1ed1ng l\u00e0 c\u00e1c nghi\u00ean c\u1ee9u c\u01a1 s\u1edf, c\u00f4ng ngh\u1ec7 cao c\u00f2n \u00edt; (iii) Nh\u1eefng th\u00e1ch th\u1ee9c l\u00e0 c\u01a1 c\u1ea5u c\u00e2y tr\u1ed3ng v\u00e0 gi\u1ed1ng ch\u01b0a \u0111\u01b0\u1ee3c \u0111a d\u1ea1ng ho\u00e1, c\u00e2y b\u1ea3n \u0111\u1ecba \u00edt \u0111\u01b0\u1ee3c quan t\u00e2m v\u00e0 c\u00f3 nguy c\u01a1 b\u1ecb keo ho\u00e1; \u0111\u1ed9i ng\u0169 c\u00e1n b\u1ed9 thi\u1ebfu \u0111\u1ea7u \u0111\u00e0n v\u00e0 gi\u00e1n \u0111o\u1ea1n v\u1ec1 th\u1ebf h\u1ec7; c\u01a1 ch\u1ebf t\u1ef1 ch\u1ee7 trong nghi\u00ean c\u1ee9u theo Ngh\u1ecb \u0111\u1ecbnh s\u1ed1 115\/N\u0110-CP ch\u01b0a \u0111\u01b0\u1ee3c th\u00e1o g\u1ee1; (iv) Nh\u1eefng \u01b0u ti\u00ean l\u00e0 c\u1ea7n ch\u00fa \u00fd \u0111\u1ea7u t\u01b0 nghi\u00ean c\u1ee9u c\u01a1 s\u1edf, c\u01a1 b\u1ea3n, c\u01a1 ch\u1ebf ch\u00ednh s\u00e1ch, qu\u1ea3n l\u00fd r\u1eebng b\u1ec1n v\u1eefng; ch\u1ebf bi\u1ebfn l\u00e2m s\u1ea3n c\u00f4ng ngh\u1ec7 cao; x\u00e2y d\u1ef1ng c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m hi\u1ec7n \u0111\u1ea1i g\u1eafn v\u1edbi \u0111\u00e0o t\u1ea1o c\u00e1n b\u1ed9 khoa h\u1ecdc \u0111\u1ea7u \u0111\u00e0n v\u1ec1 qu\u1ea3n l\u00fd v\u00e0 chuy\u00ean s\u00e2u.T\u1eeb kh\u00f3a:<\/i><\/b> Chi\u1ebfn l\u01b0\u1ee3c nghi\u00ean c\u1ee9u l\u00e2m nghi\u1ec7p, \u01b0u ti\u00ean nghi\u00ean c\u01b0\u0301u, kho\u1ea3ng tr\u1ed1ng, th\u00e0nh qu\u1ea3, th\u00e1ch th\u1ee9c.<\/td>\n<\/tr>\n
\n

The implementation of forestry research strategy (2008 – 2020) in Vietnam – the gaps and challenges<\/strong><\/p>\n

Vietnam Forestry Research Strategy during 2008 – 2020 has been more than half-way so far. A review of what has been done, what has not been to adjust and supplement, promote better implementation of the remaining phases is necessary. This article based on the reference selective and synthesis the results in forestry research in recent years, compared with three related documents are Decision approving of Forestry Development Strategy of Prime Minister, Forestry Research Strategy in Vietnam and Restructuring Project of forest sector has been approved by the Ministry of Agriculture and Rural Development with the quantitative targets for review and evaluation. Through that has drawn some of the contents of the implementation Strategy of the Vietnam Forestry Research were: (i) The main results has grown to be one of the main findings of the previous period; evaluation of environmental value, selected main species group and principal; improving seed quality improvement; planting techniques, intensive plantations. The gaps are the basic research, high-tech has less; (iii) The challenges are tree species component and germplasm are not diversified, indigenous species less attention; research staffs are shortage and disruption between generations; the autonomy of research under Decree 115\/ND-CP unresolved; (iv) The priorities are investment for basic research, policy mechanism, sustainable forest management; forest products processing by high-tech; build modern laboratories combine with the training of leading scientists.<\/p>\n

Keywords:<\/i><\/b> Forestry Research Strategy, research priorities, gaps, results, challenges<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

2. NGHI\u00caN C\u1ee8U \u1ea2NH H\u01af\u1edeNG N\u1ed2NG \u0110\u1ed8 C\u1ee6A C\u00c1C THU\u1ed0C IAA, IBA V\u00c0 NAA T\u1edaI KH\u1ea2 N\u0102NG T\u1ea0O R\u1ec4 V\u00c0 TH\u00c0NH PH\u1ea6N RU\u1ed8T B\u1ea6U T\u1edaI SINH TR\u01af\u1edeNG TH\u00d4NG \u00d4CARPA (Pinus oocarpa<\/i> Schiede Ex Schlechtendal) \u1ede GIAI \u0110O\u1ea0N V\u01af\u1edcN \u01af\u01a0M<\/strong><\/p>\n

B\u00f9i V\u0103n Tr\u1ecdng, Nguy\u1ec5n Thanh Nguy\u00ean, L\u00ea H\u1ed3ng \u00c9n
\nVi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Nam Trung B\u1ed9 v\u00e0 T\u00e2y Nguy\u00ean<\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeTTh\u00f4ng \u00f4carpa (Pinus oocarpa <\/i>Schiede ex Schlechtendal) l\u00e0 c\u00e2y g\u1ed7 l\u1edbn c\u00f3 tri\u1ec3n v\u1ecdng cao cho tr\u1ed3ng r\u1eebng kinh t\u1ebf. Trong nghi\u00ean c\u1ee9u n\u00e0y ch\u00fang t\u00f4i kh\u1ea3o s\u00e1t \u1ea3nh h\u01b0\u1edfng c\u1ee7a c\u00e1c ch\u1ea5t k\u00edch th\u00edch sinh tr\u01b0\u1edfng NAA, IAA v\u00e0 IBA d\u1ea1ng b\u1ed9t v\u1edbi c\u00e1c n\u1ed3ng \u0111\u1ed9 0,5%, 1%, 1,5%, 2% t\u1edbi kh\u1ea3 n\u0103ng ra r\u1ec5 c\u1ee7a c\u00e1c hom Th\u00f4ng \u00f4carpa v\u00e0 \u1ea3nh h\u01b0\u1edfng c\u1ee7a c\u00e1c c\u00f4ng th\u1ee9c ru\u1ed9t b\u1ea7u kh\u00e1c nhau (CT1: 100% \u0111\u1ea5t \u0111\u1ed3i, CT2: 75% \u0111\u1ea5t \u0111\u1ed3i + 25% x\u01a1 d\u1eeba, CT3: 50% \u0111\u1ea5t \u0111\u1ed3i + 50% x\u01a1 d\u1eeba, CT4: 25% \u0111\u1ea5t \u0111\u1ed3i + 75% x\u01a1 d\u1eeba) t\u1edbi sinh tr\u01b0\u1edfng Th\u00f4ng \u00f4carpa \u1edf giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m. Trong th\u00ed nghi\u1ec7m gi\u00e2m hom, c\u00e1c hom \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0 c\u00e1c ch\u1ed3i ng\u1ecdn d\u1ea1ng b\u00e1nh t\u1ebb c\u00f3 chi\u1ec1u d\u00e0i t\u1eeb 6 – 8cm \u0111\u01b0\u1ee3c l\u1ea5y t\u1eeb v\u01b0\u1eddn v\u1eadt li\u1ec7u 2 – 3 n\u0103m tu\u1ed5i, gi\u00e1 th\u1ec3 gi\u00e2m hom l\u00e0 \u0111\u1ea5t \u0111\u1ed3i, th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n trong m\u00f4i tr\u01b0\u1eddng nh\u00e0 k\u00ednh v\u1edbi \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 kho\u1ea3ng 25o<\/sup>C. K\u1ebft qu\u1ea3 gi\u00e2m hom sau 5 th\u00e1ng cho th\u1ea5y c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t c\u00f3 \u00fd ngh\u0129a th\u1ed1ng k\u00ea gi\u1eefa c\u00e1c c\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m. S\u1eed d\u1ee5ng NAA \u1edf n\u1ed3ng \u0111\u1ed9 1,5% cho k\u1ebft qu\u1ea3 gi\u00e2m hom Th\u00f4ng \u00f4carpa cao nh\u1ea5t, \u0111\u1ea1t 71,67% hom s\u1ed1ng v\u00e0 ra r\u1ec5, s\u1ed1 r\u1ec5 trung b\u00ecnh l\u00e0 3,07 r\u1ec5\/hom, chi\u1ec1u d\u00e0i r\u1ec5 trung b\u00ecnh l\u00e0 14,87cm. T\u1ea1i th\u1eddi \u0111i\u1ec3m 9 th\u00e1ng sau khi c\u1ea5y, c\u00f4ng th\u1ee9c ru\u1ed9t b\u1ea7u v\u1edbi th\u00e0nh ph\u1ea7n 100% \u0111\u1ea5t r\u1eebng th\u00f4ng cho k\u1ebft qu\u1ea3 sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t, t\u1ef7 l\u1ec7 s\u1ed1ng \u0111\u1ea1t 76,67%; chi\u1ec1u cao c\u00e2y \u0111\u1ea1t 42,6cm v\u00e0 \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c \u0111\u1ea1t 0,47cm.T\u1eeb kh\u00f3a:<\/i><\/b> <\/i>Gi\u00e2m hom, Th\u00f4ng \u00f4carpa, thu\u1ed1c k\u00edch th\u00edch sinh tr\u01b0\u1edfng, th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u.<\/td>\n<\/tr>\n
\n

Effect of concentrations of hormone IAA, IBA and NAA on the rooting rate and potting mixes on the growth of Pinus oocarpa<\/i><\/strong><\/p>\n

Pinus oocarpa<\/i> Schiede ex Schlechtendal is a kind of large wood trees specices, which have a high prospect for economic afforestation. This study evaluated the effects of IAA; IBA; NAA at diffirence concentrations (0.5%, 1%, 1.5%, 2%) on the rooting rate of P. oocarpa<\/i> and the effect of difirence potting mixes (CT1: 100% hilly soil, CT2: 75% hilly soil + 25% coir, CT3: 50% hilly soil + 50% coir, CT4: 25% hilly soil + 75% coir) on growing of P. oocarpa<\/i> in the nursery state. For the cutting experiment, shoots of P. <\/i>oocarpa<\/i> with 6 – 8cm in length was collected from 2 – year-old mother trees planted in a greenhouse. After 5 months, the result showed that P. <\/i>oocarpa<\/i> cuttings was treated with group NAA had the higher of rooting percentage, the quantity of roots and the length of roots than group IAA and group IBA. The highest results was formed when the cuttings were treated with NAA 1.5%, reached 71.67% live and rooting cuttings, avarage number of roots 3.07 roots\/cuttings and average of root lenghth 14.87cm. For the effect of difirence potting mixes, after 9 months, the best growing of P. <\/i>oocarpa<\/i> cuttings was in the potting mixe of 100% hilly soil, with survival percentage of 76.67%; 42.6cm in height and 0.47cm in diameter at stump height.<\/p>\n

Keywords:<\/i><\/b> Cutting propagation, Pinus oocarpa<\/i>, hormone, potting mixe<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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3. \u1ea2NH H\u01af\u1edeNG C\u1ee6A PH\u00c2N B\u00d3N V\u00c0 \u00c1NH S\u00c1NG \u0110\u1ebeN SINH TR\u01af\u1edeNG C\u1ee6A C\u00c2Y CON HO\u00c0NG \u0110\u1eb0NG (Fibraurea tinctoria<\/i> Lour) TRONG GIAI \u0110O\u1ea0N V\u01af\u1edcN \u01af\u01a0M<\/strong><\/p>\n

Ph\u1ea1m H\u1eefu H\u1ea1nh, Nguy\u1ec5n Huy S\u01a1n
\nVi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeTHo\u00e0ng \u0111\u1eb1ng (Fibraurea tinctoria<\/i> Lour) l\u00e0 lo\u00e0i c\u00e2y d\u01b0\u1ee3c li\u1ec7u c\u00f3 gi\u00e1 tr\u1ecb s\u1eed d\u1ee5ng v\u00e0 gi\u00e1 tr\u1ecb kinh t\u1ebf cao, l\u00e0 nguy\u00ean li\u1ec7u quan tr\u1ecdng s\u1eed d\u1ee5ng trong y h\u1ecdc c\u1ed5 truy\u1ec1n v\u00e0 y h\u1ecdc hi\u1ec7n \u0111\u1ea1i \u0111\u1ec3 l\u00e0m thu\u1ed1c ch\u1eefa c\u00e1c ch\u1ee9ng b\u1ec7nh vi\u00eam t\u1ea5y, s\u1ed1t da v\u00e0ng v\u00e0 c\u00e1c b\u1ec7nh v\u1ec1 \u0111\u01b0\u1eddng ti\u00eau h\u00f3a… K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u00e3 cho th\u1ea5y b\u00f3n th\u00fac b\u1eb1ng c\u00e1ch t\u01b0\u1edbi ph\u00e2n NPK (5:10:3) v\u1edbi n\u1ed3ng \u0111\u1ed9 5% cho t\u1ef7 l\u1ec7 s\u1ed1ng c\u0169ng nh\u01b0 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng c\u1ea3 v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c v\u00e0 chi\u1ec1u cao v\u00fat ng\u1ecdn c\u1ee7a c\u00e2y con Ho\u00e0ng \u0111\u1eb1ng cao h\u01a1n b\u00f3n th\u00fac b\u1eb1ng n\u01b0\u1edbc ph\u00e2n chu\u1ed3ng ng\u00e2m ho\u1eb7c kh\u00f4ng c\u00f3 ph\u00e2n b\u00f3n th\u00fac. Sau 8 th\u00e1ng b\u00f3n th\u00fac NPK, t\u1ef7 l\u1ec7 s\u1ed1ng \u0111\u1ea1t 89,8%, \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c (Doo<\/sub>) \u0111\u1ea1t 0,38cm, chi\u1ec1u cao v\u00fat ng\u1ecdn (Hvn<\/sub>) \u0111\u1ea1t 21,09cm. H\u01a1n n\u1eefa, \u00e1nh s\u00e1ng c\u0169ng l\u00e0 nh\u00e2n t\u1ed1 sinh th\u00e1i \u1ea3nh h\u01b0\u1edfng kh\u00e1 r\u00f5 \u0111\u1ebfn t\u1ef7 l\u1ec7 s\u1ed1ng v\u00e0 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng c\u1ea3 \u0111\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u cao c\u1ee7a c\u00e2y con Ho\u00e0ng \u0111\u1eb1ng trong giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m. Giai \u0111o\u1ea1n 2 th\u00e1ng \u0111\u1ea7u k\u1ec3 t\u1eeb khi c\u1ea5y c\u00e2y v\u00e0o b\u1ea7u \u0111\u1ea5t, c\u00e2y con th\u00edch h\u1ee3p v\u1edbi \u0111\u1ed9 che s\u00e1ng 75%, t\u1ef7 l\u1ec7 s\u1ed1ng \u0111\u1ea1t 98,2%, \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c (Doo<\/sub>) \u0111\u1ea1t 0,26cm, chi\u1ec1u cao v\u00fat ng\u1ecdn (Hvn<\/sub>) \u0111\u1ea1t 11,73cm. Giai \u0111o\u1ea1n t\u1eeb sau 2 th\u00e1ng \u0111\u1ebfn 6 th\u00e1ng ti\u1ebfp theo c\u00e2y con th\u00edch h\u1ee3p \u1edf \u0111\u1ed9 che s\u00e1ng 50%, t\u1ef7 l\u1ec7 s\u1ed1ng \u0111\u1ea1t 91,7%, \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c (Doo<\/sub>) \u0111\u1ea1t 0,34cm, chi\u1ec1u cao v\u00fat ng\u1ecdn (Hvn<\/sub>) \u0111\u1ea1t 17,32cm. Giai \u0111o\u1ea1n t\u1eeb sau 6 th\u00e1ng \u0111\u1ebfn 8 th\u00e1ng ti\u1ebfp theo c\u00e2y con th\u00edch h\u1ee3p \u1edf \u0111\u1ed9 che s\u00e1ng 25%, t\u1ef7 l\u1ec7 s\u1ed1ng \u0111\u1ea1t 89,8%, \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c (Doo<\/sub>) \u0111\u1ea1t 0,39cm, chi\u1ec1u cao v\u00fat ng\u1ecdn (Hvn<\/sub>) \u0111\u1ea1t 21,20cm. T\u1eeb sau 8 th\u00e1ng c\u00f3 th\u1ec3 d\u1ee1 b\u1ecf d\u00e0n che ho\u00e0n to\u00e0n \u0111\u1ec3 hu\u1ea5n luy\u1ec7n c\u00e2y con tr\u01b0\u1edbc khi \u0111em tr\u1ed3ng. Nh\u01b0 v\u1eady, ph\u00e2n b\u00f3n th\u00fac v\u00e0 \u00e1nh s\u00e1ng c\u00f3 \u1ea3nh h\u01b0\u1edfng kh\u00e1 r\u00f5 \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng c\u00e2y con Ho\u00e0ng \u0111\u1eb1ng trong giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m.T\u1eeb kh\u00f3a:<\/i><\/b> C\u00e2y con Ho\u00e0ng \u0111\u1eb1ng, ph\u00e2n b\u00f3n th\u00fac v\u00e0 \u00e1nh s\u00e1ng,
\nsinh tr\u01b0\u1edfng<\/td>\n<\/tr>\n
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Effects of fertilizer and light cover on growth of Fibraurea tinctoria<\/i> Lour at the stage of nursery<\/strong><\/p>\n

Fibraurea tinctoria<\/i> Lour is a woody vine, which has high economic and utilisation values. It is an important ingredient used in traditional and processed medicine to treat inflammatory, yellow fever, and gastrointestinal diseases. Results showed that survival and growth rate of seedlings were significantly higher in the treatment of applying dissolved NPK (5:10:3) in water with concentration of 5% every two months, in comparison with applying compost and control (no fertiliser). After 8 months of NPK application, survival rate, stem diameter at root collar (Doo<\/sub>), and total height (Hvn<\/sub>) were 89.8%, 0.38cm and 21.09cm, respectively. Shading significantly affected survival and growth rates of F. tinctoria<\/i> seedlings in the nursery. In the first 2 months after transplanting into pots, survival and growth rate of seedlings were significantly highest in the shading level of 75%; survival rate, Doo<\/sub> and Hvn<\/sub> were 98.2%, 0.26cm and 11.73cm, respectively. In the period from 2 – 6 months after transplanting, shading level of 50% showed the best; survival rate, Doo<\/sub> and Hvn<\/sub> were 91.7%, 0.34cm and 17.32cm, respectively. From 6 – 8 months after planting, shading level of 25% was most suitable; survival rate, Doo<\/sub> and Hvn<\/sub> were 89.8%, 0.39cm and 21.2cm, respectively. After 8 months, shading can be removed totally for training seedlings before planting without any effect on survival and growth rate. Thus, fertiliser and light significantly affected survival and growth rates of F. tinctoria<\/i> seedlings in the nursery.<\/p>\n

Keyword:<\/i><\/b> <\/b>Fibraurea tinctoria<\/i>, fertiliser, shading, seedling<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

4. M\u1ed8T S\u1ed0 \u0110\u1eb6C \u0110I\u1ec2M V\u1eacT H\u1eacU C\u1ee6A C\u00c2Y B\u00c1 B\u1ec6NH (Eurycoma longifolia <\/i>Jack.) \u1ede L\u00c2M \u0110\u1ed2NG<\/strong><\/p>\n

Nguy\u1ec5n Th\u00e0nh M\u1ebfn, Ho\u00e0ng Thanh Tr\u01b0\u1eddng
\nVi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Nam Trung B\u1ed9 v\u00e0 T\u00e2y Nguy\u00ean<\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeTB\u00e1 b\u1ec7nh l\u00e0 lo\u00e0i d\u01b0\u1ee3c li\u1ec7u c\u00f3 gi\u00e1 tr\u1ecb v\u00e0 c\u00f3 ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean \u1edf t\u1ec9nh L\u00e2m \u0110\u1ed3ng, c\u00e2y hi\u1ec7n \u0111ang b\u1ecb khai th\u00e1c m\u1ea1nh c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u1ea1n ki\u1ec7t trong t\u1ef1 nhi\u00ean. Vi\u1ec7c nghi\u00ean c\u1ee9u c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m v\u1eadt h\u1eadu c\u00f3 \u00fd ngh\u0129a quan tr\u1ecdng trong vi\u1ec7c x\u00e1c \u0111\u1ecbnh th\u1eddi \u0111i\u1ec3m ra hoa, th\u1eddi \u0111i\u1ec3m thu h\u00e1i, m\u00f9a thu h\u00e1i; l\u00e0m c\u01a1 s\u1edf cho vi\u1ec7c g\u00e2y tr\u1ed3ng ph\u00e1t tri\u1ec3n c\u1ee7a lo\u00e0i n\u00e0y. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u00e3 x\u00e1c \u0111\u1ecbnh chu k\u1ef3 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e2y k\u00e9o d\u00e0i t\u1eeb 80 – 100 ng\u00e0y; m\u00f9a hoa qu\u1ea3 k\u00e9o d\u00e0i 5 th\u00e1ng m\u00f9a kh\u00f4; t\u1eeb th\u00e1ng 1 – 5 h\u00e0ng n\u0103m (D\u01b0\u01a1ng l\u1ecbch). Pha hoa n\u1edf k\u00e9o d\u00e0i t\u1eeb 15\/2 – 15\/4; hoa n\u1edf r\u1ed9 t\u1eeb 15\/3 – 30\/3, trong v\u00f2ng 10 – 15 ng\u00e0y. Pha qu\u1ea3 gi\u00e0 t\u1eeb 20\/2 – 30\/4, r\u1ed9 t\u1eeb 1\/3 \u0111\u1ebfn 30\/3 h\u00e0ng n\u0103m, trong v\u00f2ng 10 – 15 ng\u00e0y. Pha qu\u1ea3 ch\u00edn t\u1eeb 30\/3 \u0111\u1ebfn 15\/5; r\u1ed9 15\/3 – 15\/4, trong v\u00f2ng 20 – 25 ng\u00e0y. Pha sinh d\u01b0\u1ee1ng k\u00e9o d\u00e0i t\u1eeb 40 – 60 ng\u00e0y, t\u1eeb th\u00e1ng 5 – 8. Do v\u1eady n\u00ean t\u1eadp trung thu h\u00e1i qu\u1ea3 B\u00e1 b\u1ec7nh v\u00e0o th\u00e1ng 3 v\u00e0 th\u00e1ng 4 h\u00e0ng n\u0103m \u0111\u1ec3 ph\u1ee5c v\u1ee5 gieo \u01b0\u01a1m v\u00e0 g\u00e2y tr\u1ed3ng.T\u1eeb kh\u00f3a:<\/i><\/b> B\u00e1 b\u1ec7nh, c\u00e2y d\u01b0\u1ee3c li\u1ec7u, L\u00e2m \u0110\u1ed3ng,
\nv\u1eadt h\u1eadu<\/td>\n<\/tr>\n
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Phenological characteristics of Eurycoma longifolia <\/i>in Lam Dong, Vietnam<\/strong><\/p>\n

Eurycoma longifolia<\/i> is a value medicine plant and has nature distribution in Lam Dong provine, Vietnam. This species is heavily exploited by local people and will be exhauted in the future. Plant phenology has special importantce in determining flowering time, fruit maturation time, fruit harvest. Our results showed that reproduction cycle of Eurycoma longifolia<\/i> prolongs about 5 months of dry season; starts in January to May annual (Gregorian calendar). Flower bloom phase initiates from February to April, concentrating about 10 – 15 days. Mature fruit time starts in February to April and peaks in March; for about 10 – 15 days. Ripened fruit begins from April to May, peaks March 15 to April 15, in about 15 – 20 days. Bud phase initiates from April to August, for about 40 – 60 days. New buds appears from April to June annual, peaks in April to May, for about 15 – 20 days. Focus on ripe fruits should be harvested in March and April each year to cultivate seedlings.<\/p>\n

Keywords:<\/i><\/b> Eurycoma longifolia, <\/i>medicinal plant, phenology,
\nLam Dong provine<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

5. NGHI\u00caN C\u1ee8U \u0110\u1ed8NG TH\u00c1I C\u1ea4U TR\u00daC R\u1eeaNG T\u1ef0 NHI\u00caN \u1ede V\u01af\u1edcN QU\u1ed0C GIA V\u0168 QUANG – T\u1ec8NH H\u00c0 T\u0128NH<\/strong><\/p>\n

Nguy\u1ec5n Th\u1ecb Thu Hi\u1ec1n
\nVi\u1ec7n Nghi\u00ean c\u1ee9u v\u00e0 Ph\u00e1t tri\u1ec3n L\u00e2m nghi\u1ec7p – \u0110\u1ea1i h\u1ecdc N\u00f4ng l\u00e2m Th\u00e1i Nguy\u00ean<\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeTNghi\u00ean c\u1ee9u n\u00e0y \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh thu th\u1eadp s\u1ed1 li\u1ec7u \u1edf 06 \u00f4 ti\u00eau chu\u1ea9n \u0111\u1ecbnh v\u1ecb thu\u1ed9c \u0111\u1ed1i t\u01b0\u1ee3ng r\u1eebng t\u1ef1 nhi\u00ean l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh t\u1ea1i v\u01b0\u1eddn Qu\u1ed1c gia V\u0169 Quang, t\u1ec9nh H\u00e0 T\u0129nh giai \u0111o\u1ea1n 2007 – 2012. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u ch\u1ec9 ra r\u1eb1ng, \u0111\u1ed9ng th\u00e1i c\u1ea5u tr\u00fac N\/D1.3<\/sub> c\u00f3 s\u1ef1 bi\u1ebfn \u0111\u1ed9ng v\u1ec1 ph\u00e2n b\u1ed1 s\u1ed1 c\u00e2y \u1edf c\u1ea5p k\u00ednh nh\u1ecf gi\u1ea3m v\u00e0 t\u0103ng l\u00ean \u1edf h\u1ea7u h\u1ebft c\u00e1c c\u1ee1 k\u00ednh l\u1edbn h\u01a1n. S\u1ed1 c\u00e2y t\u00e1i sinh b\u1ed5 sung \u0111\u1ea1t b\u00ecnh qu\u00e2n l\u00e0 9 c\u00e2y\/1ha\/1 n\u0103m; s\u1ed1 c\u00e2y ch\u1ebft b\u00ecnh qu\u00e2n l\u00e0 8 c\u00e2y\/1ha\/1 n\u0103m;
\nt\u1ef7 l\u1ec7 chuy\u1ec3n c\u1ea5p t\u01b0\u01a1ng \u0111\u1ed1i cao v\u00e0 s\u1ed1 c\u00e2y chuy\u1ec3n c\u1ea5p b\u00ecnh qu\u00e2n l\u00e0
\n17 c\u00e2y\/1ha\/1 n\u0103m. Nh\u00ecn chung, c\u1ea5u tr\u00fac v\u00e0 \u0111\u1ed9ng th\u00e1i c\u1ee7a r\u1eebng t\u1ef1 nhi\u00ean \u1edf khu v\u1ef1c nghi\u00ean c\u1ee9u t\u01b0\u01a1ng \u0111\u1ed1i \u1ed5n \u0111\u1ecbnh. \u0110\u1ed9ng th\u00e1i c\u1ea5u tr\u00fac t\u1ed5 th\u00e0nh c\u00f3 s\u1ef1 bi\u1ebfn \u0111\u1ed5i nh\u01b0ng kh\u00f4ng \u0111\u00e1ng k\u1ec3. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u n\u00e0y c\u00f3 \u00fd ngh\u0129a quan tr\u1ecdng trong vi\u1ec7c m\u00f4 ph\u1ecfng di\u1ec5n bi\u1ebfn c\u1ee7a r\u1eebng qua th\u1eddi gian d\u00e0i.T\u1eeb kh\u00f3a:<\/i> <\/b>C\u1ea5u tr\u00fac, \u0111\u1ed9ng th\u00e1i, r\u1eebng t\u1ef1 nhi\u00ean, t\u1ec9nh H\u00e0 T\u0129nh, V\u01b0\u1eddn Qu\u1ed1c gia V\u0169 Quang<\/td>\n<\/tr>\n
\n

Research on dynamic structure of natural forests in the Vu Quang National Park – Ha Tinh province<\/strong><\/p>\n

This study was conducted in six permanent sample plots of evergreen broad-leaved natural forests in Vu Quang National Park, Ha Tinh province from 2007 to 2012. The findings shown that the dynamics of forest and its structure were relatively small in the study area. Although there was a change in dynamics of structure components, it was not significant. The structural dynamics of diameter distribution (N\/D1.3<\/sub>) had the small variation in the plots in relation to the distribution in number of trees at the small diameter-based category, which decreased small. A number of recruitments averaged at 9 trees per ha year-1<\/sup>; while the average number of dead trees was 8 trees per ha year-1<\/sup>; the rate of transition were relatively high and the average number was 17 trees per ha year-1<\/sup>. This finding is very important for simulating the dynamics of the forest over the long term period.<\/p>\n

Keywords:<\/i><\/b> Dynamics, Ha Tinh province, natural forest, structure, Vu Quang National Park<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

<\/div>\n
6. \u1ea2NH H\u01af\u1edeNG C\u1ee6A \u0110AI CAO \u0110\u1ebeN M\u1ed8T S\u1ed0 \u0110\u1eb6C \u0110I\u1ec2M L\u00c2M H\u1eccC C\u1ee6A R\u1eeaNG T\u1ef0 NHI\u00caN L\u00c1 R\u1ed8NG TH\u01af\u1edcNG XANH C\u00d3 D\u1eba ANH (Castanopsis piriformis<\/i>) PH\u00c2N B\u1ed0 T\u1ea0I \u0110\u1eaeK G\u2019LONG,T\u1ec8NH \u0110\u1eaeK N\u00d4NG<\/strong><\/div>\n
Nguy\u1ec5n To\u00e0n Th\u1eafng1<\/sup>, L\u01b0\u01a1ng V\u0103n D\u0169ng2<\/sup>, L\u00ea Xu\u00e2n Tr\u01b0\u1eddng3<\/sup>, Nguy\u1ec5n V\u0103n H\u00e0o4<\/sup>
\nVi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m sinh1<\/sup><\/i>
\n<\/i>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc \u0110\u00e0 L\u1ea1t2<\/sup><\/i>
\n<\/i>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p3<\/sup><\/i>
\n<\/i>S\u1edf N\u00f4ng nghi\u1ec7p v\u00e0 TNT \u0110\u1eafk N\u00f4ng4<\/sup><\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/b>Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf r\u1eebng t\u1ef1 nhi\u00ean l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh n\u01a1i c\u00f3 D\u1ebb anh ph\u00e2n b\u1ed1 \u1edf 3 \u0111ai cao (\u0110ai I: <500m; \u0110ai II: 500 – 1.000m v\u00e0 \u0110ai III: 1.000 – 1.500m) t\u1ea1i \u0110\u1eafk G\u2019Long, \u0110\u1eafk N\u00f4ng. K\u1ebft qu\u1ea3 cho th\u1ea5y D\u1ebb anh c\u00f3 ph\u00e2n b\u1ed1 \u1edf 2 tr\u1ea1ng th\u00e1i IIB v\u00e0 IIIA t\u1ea1i ki\u1ec3u r\u1eebng l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh. M\u1eadt \u0111\u1ed9 t\u1ea7ng c\u00e2y cao dao \u0111\u1ed9ng t\u1eeb 236 – 654 c\u00e2y\/ha, trong \u0111\u00f3 D\u1ebb anh chi\u1ebfm t\u1eeb 8,7 – 10,2%. S\u1ed1 lo\u00e0i trong t\u1ea7ng c\u00e2y cao \u1edf c\u00e1c \u0111ai cao dao \u0111\u1ed9ng t\u1eeb 16 – 54 lo\u00e0i, trong \u0111\u00f3 s\u1ed1 lo\u00e0i tham gia trong c\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh t\u1eeb 7 – 10 lo\u00e0i. Ch\u1ec9 s\u1ed1 IV c\u00f3 s\u1ef1 bi\u1ebfn \u0111\u1ed9ng l\u1edbn theo \u0111ai cao t\u1eeb 3,3 – 9,9%. M\u1eadt \u0111\u1ed9 c\u00e2y t\u00e1i sinh c\u1ee7a l\u00e2m ph\u1ea7n c\u00f3 s\u1ef1 bi\u1ebfn \u0111\u1ed9ng l\u1edbn t\u1eeb 775 – 6.388 c\u00e2y\/ha, trong \u0111\u00f3 D\u1ebb anh chi\u1ebfm t\u1ef7 l\u1ec7 4,8 – 14,3%. S\u1ed1 lo\u00e0i t\u00e1i sinh nhi\u1ec1u nh\u1ea5t \u1edf \u0111ai II (48 lo\u00e0i) v\u00e0 th\u1ea5p nh\u1ea5t \u1edf \u0111ai I (20 lo\u00e0i). T\u00e1i sinh t\u1eeb h\u1ea1t chi\u1ebfm t\u1ef7 l\u1ec7 cao \u0111\u1ed1i v\u1edbi D\u1ebb anh v\u00e0 t\u1ea5t c\u1ea3 c\u00e1c lo\u00e0i tr\u00ean c\u1ea3 3 \u0111ai cao. Ph\u00e2n b\u1ed1 s\u1ed1 c\u00e2y theo c\u1ea5p chi\u1ec1u cao nh\u00ecn chung c\u00f3 xu h\u01b0\u1edbng gi\u1ea3m d\u1ea7n. S\u1ed1 lo\u00e0i c\u00e2y t\u00e1i sinh c\u00f3 t\u00ednh k\u1ebf th\u1eeba t\u1ea7ng c\u00e2y cao xu\u1ea5t hi\u1ec7n \u1edf 2 \u0111ai I v\u00e0 II v\u1edbi ch\u1ec9 s\u1ed1 SI >0,84.T\u1eeb kho\u00e1:<\/i><\/b> \u0110\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc, D\u1ebb anh, \u0110\u1eafk N\u00f4ng.<\/td>\n<\/tr>\n
Effect of altitude on silvicutural characteristics of evergreen broad-leaved forest with distributed Castanopsis piriformis<\/i> in Dak G\u2019Long, Dak Nong province<\/strong>The study was conducted in naturally evergreen broad leaved forests where Castanopsis piriformis<\/i> distributes at 3 altitudinal elevations (I: <500m; II: 500 – 1000m, and III: 1000 – 1500m) in Dak G\u2019Long, Dak Nong province. Results showed that C. piriformis<\/i> distributes in IIB and IIIA subgroups of evergreen broad-leaved forest. Density of upper-canopy tree ranged from 236 to 654 trees \/ha, in which C. piriformis<\/i> accounted for 8.7 – 10.2%. Number of trees species at different elevations ranged from 16 to 54 the species included in species composition was from 7 to 10. Meanwhile, the important value (IV) ranged from 3.3 to 9.9%. The seedling density had a high variation among elevation, from 775 to 6,388 stems\/ha, in which C. piriformis<\/i> accounted for 4.8 to 14.3%. The number of regenerated species was highest in 500 – 1000m elevation (48 species) and the lowest <500m elevation (20 species). Seedlings of C. piriformis<\/i> and all other species originated from seeds in all three elevation. Seedling density tended to decrease to higher classes. Regeneration trees inherited from mature trees in level I and II with indicator SI >0.84.<\/p>\n

Keywords:<\/i><\/b> Silvicultural features, Castanopsis piriformis<\/i>, Dak Nong.<\/p>\n<\/td>\n

<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\n

7. K\u1ebeT QU\u1ea2 NGHI\u00caN C\u1ee8U \u0110\u1eb6C \u0110I\u1ec2M H\u00ccNH TH\u00c1I C\u00c1C LO\u00c0I C\u00c2Y NG\u1eacP M\u1eb6N V\u00d9NG VEN BI\u1ec2N B\u1eaeC B\u1ed8<\/strong><\/p>\n

H\u00e0 Th\u1ecb M\u1eebng, \u0110inh Thanh Giang
\nVi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng<\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeTTrong r\u1eebng t\u1ef1 nhi\u00ean v\u00e0 r\u1eebng tr\u1ed3ng t\u1ea1i v\u00f9ng ven bi\u1ec3n B\u1eafc B\u1ed9, c\u00f3 6 lo\u00e0i c\u00e2y ng\u1eadp m\u1eb7n ch\u1ee7 y\u1ebfu l\u00e0: \u0110\u01b0\u1edbc v\u00f2i (Rhizophora stylosa)<\/i>; M\u1eafm bi\u1ec3n (Avicennia marina)<\/i>; V\u1eb9t d\u00f9 (Bruguiera gymnorrhiza)<\/i>; Trang (Kandelia abovata)<\/i>; B\u1ea7n chua (Sonneratia caseolaris);<\/i> S\u00fa (Aegiceras corniculatum).<\/i>\u0110\u1ec3 t\u1ed3n t\u1ea1i v\u00e0 ph\u00e1t tri\u1ec3n tr\u00ean \u0111\u1ea5t ng\u1eadp m\u1eb7n ven bi\u1ec3n, c\u00e1c lo\u00e0i c\u00e2y ng\u1eadp m\u1eb7n ph\u1ea3i c\u00f3 nh\u1eefng bi\u1ebfn th\u00e1i th\u00edch \u1ee9ng v\u1edbi \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t c\u1ee7a m\u00f4i tr\u01b0\u1eddng s\u1ed1ng l\u00e0: s\u00f3ng to, gi\u00f3 l\u1edbn, th\u1ec3 n\u1ec1n ch\u01b0a \u1ed5n \u0111\u1ecbnh, ng\u1eadp tri\u1ec1u, \u0111\u1ed9 m\u1eb7n… Bi\u1ec3u hi\u1ec7n n\u1ed5i b\u1eadt nh\u1ea5t cho hi\u1ec7n t\u01b0\u1ee3ng bi\u1ebfn th\u00e1i th\u00edch \u1ee9ng c\u1ee7a c\u00e1c lo\u00e0i c\u00e2y ng\u1eadp m\u1eb7n l\u00e0 bi\u1ebfn th\u00e1i c\u1ee7a qu\u1ea3 v\u00e0 b\u1ed9 r\u1ec5, \u0111\u00e2y l\u00e0 2 \u0111\u1eb7c tr\u01b0ng li\u00ean quan t\u1edbi vi\u1ec7c \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng sinh t\u1ed3n c\u1ee7a n\u00f2i gi\u1ed1ng b\u1eb1ng tr\u1ee5 m\u1ea7m v\u00e0 th\u00edch \u1ee9ng v\u1edbi m\u00f4i tr\u01b0\u1eddng \u0111\u1ea5t b\u00f9n, ng\u1eadp n\u01b0\u1edbc b\u1eb1ng b\u1ed9 r\u1ec5. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u00e3 x\u00e1c \u0111\u1ecbnh, ph\u00e2n chia s\u1ef1 bi\u1ebfn th\u00e1i th\u00edch \u1ee9ng h\u00ecnh th\u00e1i v\u00e0 sinh th\u00e1i \u0111\u1eb7c tr\u01b0ng v\u1ec1 gi\u1ed1ng v\u00e0 b\u1ed9 r\u1ec5 c\u1ee7a 6 lo\u00e0i c\u00e2y ng\u1eadp m\u1eb7n ven bi\u1ec3n B\u1eafc B\u1ed9 th\u00e0nh 4 nh\u00f3m lo\u00e0i.K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u n\u00e0y l\u00e0 t\u00e0i li\u1ec7u tham kh\u1ea3o v\u00e0 s\u1eed d\u1ee5ng \u0111\u1ec3 l\u1ef1a ch\u1ecdn c\u00e1c lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c m\u1ee5c ti\u00eau tr\u1ed3ng r\u1eebng ng\u1eadp m\u1eb7n ven bi\u1ec3n kh\u00e1c nhau, g\u1eafn v\u1edbi vi\u1ec7c x\u00e2y d\u1ef1ng ngu\u1ed3n gi\u1ed1ng c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng (r\u1eebng gi\u1ed1ng chuy\u1ec3n h\u00f3a, r\u1eebng gi\u1ed1ng, v\u01b0\u1eddn gi\u1ed1ng), g\u00f3p ph\u1ea7n n\u00e2ng cao hi\u1ec7u qu\u1ea3 trong qu\u1ea3n l\u00fd v\u00e0 ph\u00e1t tri\u1ec3n b\u1ec1n v\u1eefng \u0111\u1ed1i t\u01b0\u1ee3ng r\u1eebng \u0111\u1eb7c th\u00f9 n\u00e0y.T\u1eeb kh\u00f3a:<\/i><\/b> C\u00e2y r\u1eebng ng\u1eadp m\u1eb7n, bi\u1ebfn th\u00e1i, th\u00edch \u1ee9ng, tr\u1ee5 m\u1ea7m v\u00e0 b\u1ed9 r\u1ec5<\/td>\n<\/tr>\n
\n

Results on morphology of mangrove species in the Northern coastal region<\/strong><\/p>\n

There are 6 dominant species in natural and plantation mangrove forests in the Northern region of Vietnam, including: Rhizophora stylosa; Avicennia marina; Bruguiera gymnorrhiza; Kandelia abovata; Sonneratia caseolaris; Aegiceras corniculatum.<\/i> To survive and develop in coastal regions, mangrove species have to change in morphology to adapt to hard environment, such as huge wave and wind, unstable site, intertidal regime, salinity,… The most prominent manifestation of the adaptive metamorphosis of mangrove species is fruit and root morphology. These features relate to survival capacity through propagules and adaptive capacity to the mudy, inundated environment through root system. Research results showed the adaptive metamorphosis indentification and classification in terms of morphology, ecology, root system and variety of 6 mangrove species in the Northern Coastal region into 4 groups.<\/p>\n

The research results can be used as reference for selecting suitable species for plantation ensuring multiple goals of mangrove plantation in the coastal areas, linking with the development of high quality variety (transformed variety forest, variety forest and variety nursery), contributing to improve effectiveness of mangrove sustainable management and development.<\/p>\n

Keyword:<\/i><\/b> Mangrove species, metamorphosis, adaptation, propagule,
\nroot system<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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8. SINH TR\u01af\u1edeNG C\u1ee6A C\u00c1C LO\u00c0I C\u00c2Y TR\u1ed2NG TRONG M\u00d4 H\u00ccNH PH\u1ee4C H\u1ed2I R\u1eeaNG NG\u1eacP M\u1eb6N \u1ede \u0110\u1ea6M NU\u00d4I T\u00d4M B\u1ece HOANG T\u1ea0I X\u00c3 \u0110\u1ed2NG RUI HUY\u1ec6N TI\u00caN Y\u00caN T\u1ec8NH QU\u1ea2NG NINH<\/strong><\/p>\n

\u0110inh Thanh Giang
\nVi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng<\/i><\/p>\n\n\n\n
T\u00d3M T\u1eaeTT\u1ed5ng di\u1ec7n t\u00edch ao nu\u00f4i t\u00f4m t\u1ea1i c\u00e1c t\u1ec9nh ven bi\u1ec3n B\u1eafc B\u1ed9 (2011) kho\u1ea3ng: 37.728ha, trong \u0111\u00f3 c\u00f3 t\u1edbi 17.594ha di\u1ec7n t\u00edch ao nu\u00f4i b\u1ecf hoang. K\u1ebft qu\u1ea3 tr\u1ed3ng r\u1eebng ng\u1eadp m\u1eb7n trong c\u00e1c \u0111\u1ea7m nu\u00f4i t\u00f4m b\u1ecf hoang t\u1ea1i x\u00e3 \u0110\u1ed3ng Rui, huy\u1ec7n Ti\u00ean Y\u00ean t\u1ec9nh Qu\u1ea3ng Ninh cho th\u1ea5y: C\u00f3 3 lo\u00e0i l\u00e0: \u0110\u01b0\u1edbc V\u00f2i (Rhizophora stylosa<\/i> Griff), Trang (Kandelia abovata),<\/i> M\u1eafm bi\u1ec3n (Avicennia marina)<\/i> c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng cao, sinh tr\u01b0\u1edfng t\u1ed1t ph\u00f9 h\u1ee3p cho vi\u1ec7c tr\u1ed3ng v\u00e0 ph\u1ee5c h\u1ed3i r\u1eebng ng\u1eadp m\u1eb7n t\u1ea1i Qu\u1ea3ng Ninh. T\u1ef7 l\u1ec7 s\u1ed1ng v\u00e0 sinh tr\u01b0\u1edfng c\u1ee7a r\u1eebng ng\u1eadp m\u1eb7n tr\u1ed3ng b\u1eb1ng c\u00e2y con c\u00f3 b\u1ea7u cao h\u01a1n t\u1eeb 10 – 20% so v\u1edbi r\u1eebng tr\u1ed3ng b\u1eb1ng tr\u1ee5 m\u1ea7m.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

T\u1eeb kh\u00f3a:<\/i><\/b> R\u1eebng ng\u1eadp m\u1eb7n, \u0111\u1ea7m nu\u00f4i t\u00f4m<\/p>\n

 <\/p>\n

Growth of rehabilitation mangrove model in fallow shrimp farming at Dong Rui commune, Tien Yen district, Quang Ninh province<\/strong><\/p>\n

Total shrimp framing area in the Northern coastal provinces (2011) was about 37.728ha, of which the total fallow shrimp farming area was 17.594 ha. Mangrove plantation results in the fallow shrimp farmings at Dong Rui commune, Tien Yen district, Quang Ninh province showed that Rhizophora stylosa <\/i>Griff, Kandelia abovata, Avicennia marina,<\/i> had the high survival rate and grew well. Therefore, the three species should be used for mangrove plantation in Quang Ninh province. Survival and growth rate of mangroves planted by sapling with pots were higher 10 – 20% than mangroves planted by propagule.<\/p>\n

Keywords:<\/i><\/b> Mangrove, Shrimp farming<\/p>\n

 <\/p>\n<\/div>\n

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 <\/p>\n

9. \u0110\u00c1NH GI\u00c1 T\u00ccNH H\u00ccNH G\u00c2Y H\u1ea0I, \u0110\u1eb6C \u0110I\u1ec2M NH\u1eacN BI\u1ebeT V\u00c0 T\u1eacP T\u00cdNH C\u1ee6A LO\u00c0I Leptoscybe invasa <\/i>Fisher & La Salle. G\u00c2Y U B\u01af\u1edaU B\u1ea0CH \u0110\u00c0N \u1ede VI\u1ec6T NAM<\/strong><\/p>\n

L\u00ea V\u0103n B\u00ecnh, Ph\u1ea1m Quang Thu, \u0110\u00e0o Ng\u1ecdc Quang v\u00e0 Nguy\u1ec5n Ho\u00e0i Thu
\n<\/i>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeTLo\u00e0i ong g\u00e2y u b\u01b0\u1edbu b\u1ea1ch \u0111\u00e0n lai, B\u1ea1ch \u0111\u00e0n uro v\u00e0 B\u1ea1ch \u0111\u00e0n camal g\u00e2y h\u1ea1i \u1edf r\u1eebng tr\u1ed3ng d\u01b0\u1edbi 2 n\u0103m tu\u1ed5i \u1edf 26 \u0111\u1ecba \u0111i\u1ec3m \u0111i\u1ec1u tra c\u00f3 t\u1ef7 l\u1ec7 b\u1ecb h\u1ea1i P% t\u1eeb 26,8% \u0111\u1ebfn 57,2% v\u00e0 ch\u1ec9 s\u1ed1 b\u1ecb h\u1ea1i Rtb trung b\u00ecnh t\u1eeb 0,3 \u0111\u1ebfn 2,2. Lo\u00e0i ong n\u00e0y c\u00f3 t\u00ean khoa h\u1ecdc l\u00e0: Leptocybe invasa<\/i> Fisher & La Salle., thu\u1ed9c h\u1ecd Eulophiadae, b\u1ed9 C\u00e1nh m\u00e0ng (Hymenoptera). Ong c\u00e1i tr\u01b0\u1edfng th\u00e0nh chi\u1ec1u d\u00e0i trung b\u00ecnh 1,36mm, dao \u0111\u1ed9ng t\u1eeb 1,10 \u0111\u1ebfn 1,55mm; \u0111\u1ea7u v\u00e0 m\u00ecnh c\u00f3 m\u00e0u \u0111en ph\u1edbt xanh \u0111\u1ebfn xanh \u00e1nh kim; r\u00e2u \u0111\u1ea7u v\u1edbi c\u00e1ch b\u1ed1 tr\u00ed theo c\u00f4ng th\u1ee9c
\n1 : 1 : 4 : 3 : 3, c\u00f3 \u00edt l\u00f4ng tr\u00ean \u0111\u1ed1t r\u00e2u v\u00e0 l\u00f4ng ng\u1eafn. Ong \u0111\u1ef1c tr\u01b0\u1edfng th\u00e0nh: k\u00edch th\u01b0\u1edbc nh\u1ecf, chi\u1ec1u d\u00e0i trung b\u00ecnh 1,04mm, dao \u0111\u1ed9ng t\u1eeb 0,90 \u0111\u1ebfn 1,20mm; \u0111\u1ea7u v\u00e0 m\u00ecnh c\u00f3 m\u00e0u \u0111en ph\u1edbt xanh \u0111\u1ebfn xanh \u00e1nh kim; r\u00e2u \u0111\u1ea7u v\u1edbi c\u00e1ch b\u1ed1 tr\u00ed theo c\u00f4ng th\u1ee9c 1 : 1 : 3 : 4 : 3, c\u00f3 m\u00e0u n\u00e2u nh\u1ea1t, c\u00f3 nhi\u1ec1u l\u00f4ng v\u00e0 l\u00f4ng d\u00e0i h\u01a1n con c\u00e1i. Tr\u1ee9ng m\u00e0u tr\u1eafng x\u00e1m nh\u1ea1t, h\u00ecnh b\u1ea7u d\u1ee5c v\u00e0 cu\u1ed1ng nh\u1ecf d\u00e0i. S\u00e2u non 4 tu\u1ed5i m\u00e0u tr\u1eafng \u0111\u1ee5c, k\u00edch th\u01b0\u1edbc s\u00e2u non thay \u0111\u1ed5i theo tu\u1ed5i, tu\u1ed5i 1 s\u00e2u non d\u00e0i t\u1eeb 0,08 \u0111\u1ebfn 0,19mm, s\u00e2u non tu\u1ed5i 2 d\u00e0i t\u1eeb 0,20 \u0111\u1ebfn 0,38mm, s\u00e2u non tu\u1ed5i 3 d\u00e0i t\u1eeb 0,42 \u0111\u1ebfn 0,79mm, s\u00e2u non tu\u1ed5i 4 d\u00e0i t\u1eeb 0,81 \u0111\u1ebfn 1,20mm. Nh\u1ed9ng c\u00f3 m\u00e0u tr\u1eafng \u0111\u1ee5c, m\u00e0u s\u1eafc nh\u1ed9ng thay \u0111\u1ed5i theo th\u1eddi gian t\u1eeb khi v\u00e0o nh\u1ed9ng m\u00e0u tr\u1eafng \u0111\u1ee5c \u0111\u1ebfn g\u1ea7n v\u0169 h\u00f3a m\u00e0u x\u00e1m \u0111en, d\u00e0i t\u1eeb 0,80 \u0111\u1ebfn 1,21mm, ong tr\u01b0\u1edfng th\u00e0nh c\u00e1i th\u01b0\u1eddng \u0111\u1ebb tr\u1ee9ng l\u00ean c\u00e1c b\u1ed9 ph\u1eadn c\u1ee7a c\u00e2y con b\u1ea1ch \u0111\u00e0n nh\u01b0 c\u00e0nh non, cu\u1ed1ng v\u00e0 g\u00e2n l\u00e1 non.T\u1eeb kh\u00f3a:<\/i> <\/b>T\u1eadp t\u00ednh, g\u00e2y h\u1ea1i, ong g\u00e2y u b\u01b0\u1edbu b\u1ea1ch \u0111\u00e0n, Leptocybe invasa, <\/i>\u0111\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u00e1i.<\/td>\n<\/tr>\n
\n

Evaluating damage status, morphological characteristics and behavior of Leptoscybe invasa <\/i>Fisher & La Salle causing eucalyptus gall wasp in Vietnam<\/strong><\/p>\n

Eucalyptus gall wasp was found on Eucalyptus urophylla<\/i> \u00d7 Eucalyptus camaldunensis, E. urophylla<\/i> and E. camaldunensis <\/i>in plantations under two years in 26 investigation locations. Damage level (P%) caused by this pest was from 26.8% to 57.2% and damage indicator (Rtb<\/sub>) from 0.3 to 2.2. Eucalyptus gall wasp has identified Leptocybe invasa<\/i> Fisher & La Salle (Hymenoptera: Eulophiadae). Adult female averaged 1.36mm in length and ranged from 1.10 to 1.55mm; head and body black with slight blue to green metallic shine; antennae formula with one scape, one pedicel, four ring segments (or four anelli), three funicle and three claval segements and thinly trichoid antenna. Adult male: small size mean length 1.04mm, range from 0.90 to 1.2mm; head and body black with bluish to green metallic shine; antennae formula with one scape, one pedicel, three anelli, four funicle and three claval segements, antenna are slight brown and distinctly hairy antenna. Eggs are oval body and a long narrow anterior stalk, grayish white. In generally larvae undergo four ages, the larva grows, the first instar body length is from 0.08 to 0.19mm, mean length is from 0.20 to 0.38mm in second instar ages, the third instar larvae length ranges from 0.42 to 0.79mm, and length of at the fourth instar larvae is from 0.81 to 1.20mm. Pupae are milky, color of pupae changes over time transfers from enter milky cocoon to its final moulting stage, length from 0.80 to 1.21mm. Adult female laid eggs on young parts of the plant viz tender shoot, petiole and tender leaf midrib.<\/p>\n

Keywords:<\/i><\/b> Behavious, damage, Eucalyptus gall wasp, Leptocybe invasa<\/i>, morphological characteristics<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u00a0<\/b><\/p>\n

\n

10. \u0110\u1eb6C \u0110I\u1ec2M SINH H\u1eccC V\u00c0 PH\u00d2NG TR\u1eea LO\u00c0I ONG Leptoscybe invasa <\/i>Fisher & La Salle G\u00c2Y U B\u01af\u1edaU B\u1ea0CH \u0110\u00c0N<\/strong><\/p>\n

L\u00ea V\u0103n B\u00ecnh, Ph\u1ea1m Quang Thu
\nVi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeTLo\u00e0i ong Leptocybe invasa<\/i> Fisher & La Salle g\u00e2y u b\u01b0\u1edbu g\u00e2y h\u1ea1i c\u00e0nh non, cu\u1ed1ng v\u00e0 g\u00e2n l\u00e1 b\u1ea1ch \u0111\u00e0n \u1edf v\u01b0\u1eddn \u01b0\u01a1m v\u00e0 r\u1eebng tr\u1ed3ng d\u01b0\u1edbi 2 n\u0103m tu\u1ed5i l\u00e0 lo\u00e0i bi\u1ebfn th\u00e1i ho\u00e0n to\u00e0n, c\u00f3 4 pha: Tr\u01b0\u1edfng th\u00e0nh, tr\u1ee9ng, s\u00e2u non v\u00e0 nh\u1ed9ng. Nu\u00f4i ong g\u00e2y u b\u01b0\u1edbu b\u1ea1ch \u0111\u00e0n trong ph\u00f2ng th\u00ed nghi\u1ec7m \u1edf \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh 28,9o<\/sup>C, \u0111\u1ed9 \u1ea9m (RH) 78,5%, v\u00f2ng \u0111\u1eddi c\u1ee7a ong trung b\u00ecnh 131,5 ng\u00e0y dao \u0111\u1ed9ng t\u1eeb 123 ng\u00e0y \u0111\u1ebfn 140 ng\u00e0y. Th\u1eddi gian xu\u1ea5t hi\u1ec7n c\u1ee7a ong tr\u01b0\u1edfng th\u00e0nh g\u00e2y u b\u01b0\u1edbu b\u1ea1ch \u0111\u00e0n trong 1 n\u0103m c\u00f3 3 \u0111\u1ee3t g\u1ed1i nhau \u0111\u1ee3t I t\u1eeb gi\u1eefa th\u00e1ng 4 \u0111\u1ebfn \u0111\u1ea7u th\u00e1ng 6, \u0111\u1ee3t II t\u1eeb gi\u1eefa th\u00e1ng 8 \u0111\u1ebfn gi\u1eefa th\u00e1ng 10, \u0111\u1ee3t III t\u1eeb gi\u1eefa th\u00e1ng 11 \u0111\u1ebfn cu\u1ed1i th\u00e1ng 12. Ph\u00f2ng tr\u1eeb ong g\u00e2y u b\u01b0\u1edbu b\u1ea1ch \u0111\u00e0n b\u1eb1ng b\u1eaby m\u00e0u v\u00e0ng d\u00ednh c\u00f3 hi\u1ec7u qu\u1ea3 nh\u1ea5t c\u00f3 128,1 con\/b\u1eaby, b\u1eaby m\u00e0u \u0111\u1ecf d\u00ednh th\u1ea5p nh\u1ea5t 24,8 con\/b\u1eaby, c\u00e1c b\u1eaby c\u00f2n l\u1ea1i l\u00e0 m\u00e0u xanh l\u00e1 c\u00e2y, m\u00e0u tr\u1eafng v\u00e0 m\u00e0u xanh hi\u1ec7u qu\u1ea3 dao \u0111\u1ed9ng t\u1eeb 24,8 con\/b\u1eaby \u0111\u1ebfn 54,3con\/b\u1eaby; d\u00f9ng thu\u1ed1c h\u00f3a h\u1ecdc ph\u00f2ng tr\u1eeb ong g\u00e2y u b\u01b0\u1edbu b\u1ea1ch \u0111\u00e0n sau 4 l\u1ea7n phun so v\u1edbi \u0111\u1ed1i ch\u1ee9ng (n\u01b0\u1edbc c\u1ea5t) hi\u1ec7u l\u1ef1c t\u1ed1t nh\u1ea5t thu\u1ed1c Actara 25WG 0,8 con, ti\u1ebfp theo l\u00e0 thu\u1ed1c confidor 100SL 2,0 con, thu\u1ed1c Penalty 40WP 2,3 con v\u00e0 \u0111\u1ed1i ch\u1ee9ng 14,2 con.T\u1eeb kh\u00f3a:<\/i> <\/b>Leptoscybe invasa<\/i>, \u0111\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc, ong g\u00e2y u b\u01b0\u1edbu b\u1ea1ch \u0111\u00e0n, ph\u00f2ng tr\u1eeb.<\/i><\/td>\n<\/tr>\n
\n

Biology and control of eucalyptus gall wasp Leptoscybe invasa <\/i>Fisher & La Salle<\/strong><\/p>\n

The Eucalyptus gall wasp Leptoscybe invasa <\/i>Fisher & La Salle causes galls on leaf midrib, petiole and stems of new shoots of eucalypt seedlings in nursery and in plantations under two years of age. It has a four- stage life cycle and goes through complete metamorphosis: adult, egg, larvae and pupae. Rairing gall wasp in laboratory at an average room temperature of 28.9o<\/sup>C and humidity 78.5%, mean developmental time from egg laying to adult stage was 131.5 days (ranges from 123 to 140 days). The time of adult eucalyptus gall wasp emeges in year, there are three overlapping generations per year, generation 1 from mid April to early<\/p>\n

June, generation 2 from mid August to mid October, generation 3 from late November to at the end of December. Control of gall wasp by yellow sticky traps are most effective (128.1 wasps\/trap), the red sticky traps are lowest (24.8 wasp\/trap), the remaining sticky traps with green, blue and white color ranges from 24.8 wasps\/trap to 54.3 wasps\/trap; using chemical prevent eucalyptus gall wasp after four spraying times compare with control (distill water), the result shown that Actara 25WG chemical is most effective (0.8 wasps), followed by effect of Confidor 100SL chemical (2.0 wasps); Penalty chemical (2.3 wasps) and control is 14.2 wasps alive.<\/p>\n

Key words:<\/i> <\/b>Leptoscybe invasa<\/i>, biology characteristics, eucalyptus gall wasp, control<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

 <\/p>\n

\n

11. PH\u00c2N L\u1eacP, TUY\u1ec2N CH\u1eccN M\u1ed8T S\u1ed0 CH\u1ee6NG VI KHU\u1ea8N N\u1ed8I SINH T\u1ea0O CH\u1ea4T K\u00cdCH TH\u00cdCH SINH TR\u01af\u1edeNG INDOLE-3 – ACETIC AX\u00cdT (IAA) V\u00c0 \u0110\u1ed0I KH\u00c1NG N\u1ea4M G\u00c2Y B\u1ec6NH TH\u1ed0I C\u1ed4 R\u1ec4 C\u00c2Y TH\u00d4NG<\/strong><\/p>\n

Nguy\u1ec5n Th\u1ecb Thu\u00fd Nga
\nVi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeTVi sinh v\u1eadt n\u1ed9i sinh s\u1ed1ng trong m\u00f4 c\u1ee7a t\u1ebf b\u00e0o th\u1ef1c v\u1eadt, kh\u00f4ng g\u00e2y h\u1ea1i cho c\u00e2y ch\u1ee7 m\u00e0 th\u01b0\u1eddng t\u1ea1o ra c\u00e1c ch\u1ea5t c\u00f3 ho\u1ea1t t\u00ednh sinh h\u1ecdc nh\u01b0: ch\u1ea5t \u0111i\u1ec1u h\u00f2a sinh tr\u01b0\u1edfng, c\u00e1c ch\u1ea5t kh\u00e1ng sinh, nh\u00f3m ax\u00edt pholic… c\u00e1c h\u1ee3p ch\u1ea5t n\u00e0y \u0111\u00e3 ph\u00e1t huy vai tr\u00f2 c\u1ee7a n\u00f3 \u0111\u1ed1i v\u1edbi \u0111\u1eddi s\u1ed1ng c\u1ee7a c\u00e2y ch\u1ee7, k\u00edch th\u00edch sinh tr\u01b0\u1edfng th\u1ef1c v\u1eadt, sinh kh\u00e1ng sinh \u1ee9c ch\u1ebf s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a m\u1ea7m b\u1ec7nh, t\u0103ng s\u1ee9c \u0111\u1ec1 kh\u00e1ng cho c\u00e2y. Vi\u1ec7c ph\u00e2n l\u1eadp v\u00e0 tuy\u1ec3n ch\u1ecdn vi sinh v\u1eadt n\u1ed9i sinh c\u00e2y Th\u00f4ng nh\u1ef1a c\u00f3 kh\u1ea3 n\u0103ng sinh t\u1ed5ng h\u1ee3p Indole-3 – Acetic Ax\u00edt (IAA) v\u00e0 c\u00e1c h\u1ee3p ch\u1ea5t kh\u00e1ng sinh \u1ee9c ch\u1ebf s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a m\u1ea7m b\u1ec7nh l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft, c\u00f3 \u00fd ngh\u0129a khoa h\u1ecdc v\u00e0 th\u1ef1c ti\u1ec5n l\u1edbn. T\u1eeb m\u1eabu r\u1ec5\/c\u00e0nh Th\u00f4ng nh\u1ef1a \u0111\u00e3 ph\u00e2n l\u1eadp \u0111\u01b0\u1ee3c 2 ch\u1ee7ng vi khu\u1ea9n n\u1ed9i sinh k\u00fd hi\u1ec7u l\u00e0 QI1<\/sub>, v\u00e0QI24<\/sub>, ch\u1ee7ng QI1<\/sub> \u0111\u01b0\u1ee3cgi\u00e1m \u0111\u1ecbnh l\u00e0 lo\u00e0i Pseudomonas fluorescens<\/i> c\u00f3 kh\u1ea3 n\u0103ng sinh t\u1ed5ng h\u1ee3p IAA, \u0111\u1ea1t 11,872mg\/l. Khu\u1ea9n l\u1ea1c c\u00f3 m\u00e0u tr\u1eafng \u0111\u1ee5c, d\u00e0y, m\u1ecbn, m\u1ecdc \u0111\u1ec1u, c\u00f3 gram (-) t\u1ebf b\u00e0o h\u00ecnh h\u1ea1t g\u1ea1o d\u00e0i, k\u00edch th\u01b0\u1edbc t\u1ebf b\u00e0o 1,2 \u00b4 3,4\u00b5m. Ch\u1ee7ng QI24<\/sub> \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh l\u00e0 lo\u00e0i Bacillus subtilis<\/i> \u0111\u1ed1i kh\u00e1ng n\u1ea5m Fusarium oxysporum<\/i> g\u00e2y b\u1ec7nh th\u1ed1i c\u1ed5 r\u1ec5 th\u00f4ng, sau 10 ng\u00e0y c\u00f3 \u0111\u01b0\u1eddng k\u00ednh v\u00f2ng \u1ee9c ch\u1ebf n\u1ea5m g\u00e2y b\u1ec7nh l\u00e0 22mm, c\u00f3 ph\u1ea3n \u1ee9ng m\u00e0u d\u01b0\u01a1ng t\u00ednh v\u1edbi thu\u1ed1c th\u1eed Salkowski, kh\u1ea3 n\u0103ng sinh t\u1ed5ng h\u1ee3p IAA \u0111\u1ea1t 5,312mg\/l. Khu\u1ea9n l\u1ea1c ch\u1ee7ng n\u00e0y m\u00e0u xanh lam nh\u1ea1t, khu\u1ea9n l\u1ea1c d\u00e0y, h\u01a1i s\u1ea7n, m\u1ecdc lan, c\u00f3 gram (-) t\u1ebf b\u00e0o h\u00ecnh que ng\u1eafn, k\u00edch th\u01b0\u1edbc t\u1ebf b\u00e0o 0,7 \u00b4 1,6 (\u00b5m). C\u1ea3 hai ch\u1ee7ng QI1<\/sub> v\u00e0 ch\u1ee7ng QI24<\/sub> \u0111\u1ec1u c\u00f3 kh\u1ea3 n\u0103ng ph\u00e1t tri\u1ec3n m\u1ea1nh \u1edf c\u00e1c \u0111i\u1ec1u ki\u1ec7n th\u01b0\u1eddng d\u1ec5 nu\u00f4i c\u1ea5y \u0111\u1ec3 s\u1ea3n xu\u1ea5t ph\u00e2n b\u00f3n vi sinh v\u1eadt t\u0103ng sinh tr\u01b0\u1edfng cho c\u00e2y th\u00f4ng v\u00e0 h\u1ea1n ch\u1ebf b\u1ec7nh th\u1ed1i c\u1ed5 r\u1ec5.T\u1eeb kho\u00e1:<\/i><\/b> Th\u00f4ng nh\u1ef1a, vi khu\u1ea9n n\u1ed9i sinh, Indole-3 – Acetic Ax\u00edt, vi khu\u1ea9n \u0111\u1ed1i kh\u00e1ng n\u1ea5m g\u00e2y b\u1ec7nh.<\/td>\n<\/tr>\n
\n

Isolating and screening bacterial endophytes producing growth regulator Indole-3 – Acetic Acid (IAA) and antifungal compounds against fusarium oxysporum damping-off disease of Pinus merkusii<\/i><\/strong><\/p>\n

Endophytic microorganisms in plant tissues, which are not harmful to host plant, could produce bioactive substances such as growth regulators, antibiotics, folic acid groups… These compounds promote beneficial effects for the life of the host plants, stimulate the growth of plant, inhibit the growth of pathogens and enhance the resistance of trees. Isolating and screening endophytes from Pinus merkusii<\/i>, which are capable of synthesizing IAA and antibiotics, is very essential and have both scientific and practical significance. From the 20 branch samples, 36 Strains of bacterial endophytes were isolated, in which 2 strains of endophytes QI1<\/sub> and QI24 <\/sub>having high bioactive activities were selected, QI1<\/sub> was identified as Pseudomonas fluorescens<\/i>, which had the ability to produce IAA with 11.872 mg\/l. Strain QI24<\/sub> was identified as Bacillus subtilis <\/i>which produced antifungal metabolies against Fusarium oxysporum <\/i>causing damping off of pine, inhibition ring diameter after 10 days was 22mm, production of IAA reached 5.312 mg\/l. Both strains QI1<\/sub> and QI24 <\/sub>are likely to grow in normal condition to produce biofertilizer to stimulate growth and control damping off for pines.<\/p>\n

Keywords:<\/i><\/b> Pinus merkusii,<\/i> endophyte, Indole-3 – acetic acid, resisting pathogens<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n


\n<\/b> 12. NGHI\u00caN C\u1ee8U T\u1ea0O CH\u1ebe PH\u1ea8M \u0110A CH\u1ee6NG VI SINH V\u1eacT V\u00c0 \u0110\u00c1NH GI\u00c1 HI\u1ec6U QU\u1ea2 C\u1ee6A CH\u1ebe PH\u1ea8M \u0110\u1ed0I V\u1edaI S\u1ea2N XU\u1ea4T C\u00c2Y CON TH\u00d4NG NH\u1ef0A (Pinus merkusii <\/i>) \u1ede V\u01af\u1edcN \u01af\u01a0M<\/strong><\/p>\n

\n

Nguy\u1ec5n Th\u1ecb Th\u00fay Nga
\n<\/i>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeTTh\u00f4ng l\u00e0 c\u00e2y tr\u1ed3ng \u0111a m\u1ee5c \u0111\u00edch, mang l\u1ea1i ngu\u1ed3n l\u1ee3i v\u1ec1 kinh t\u1ebf v\u00e0 b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng. Tuy nhi\u00ean gieo \u01b0\u01a1m th\u00f4ng t\u1ea1i v\u01b0\u1eddn \u01b0\u01a1m c\u00f2n m\u1eafc nhi\u1ec1u b\u1ec7nh, nh\u01b0 b\u1ec7nh v\u00e0ng c\u00f2i do c\u00e2y kh\u00f4ng c\u00f3 m\u1ed1i quan h\u1ec7 c\u1ed9ng sinh v\u1edbi n\u1ea5m, b\u1ec7nh th\u1ed1i c\u1ed5 r\u1ec5 do n\u1ea5m Fusarium<\/i> oxysporum<\/i>. Vi\u1ec7c t\u1ea1o ch\u1ebf ph\u1ea9m vi sinh v\u1eadt \u0111a ch\u1ee7ng gi\u00fap t\u0103ng sinh tr\u01b0\u1edfng v\u00e0 h\u1ea1n ch\u1ebf b\u1ec7nh c\u1ee7a c\u00e2y Th\u00f4ng nh\u1ef1a, \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c nhu c\u1ea7u t\u1ea1o ra nh\u1eefng c\u00e2y con ch\u1ea5t l\u01b0\u1ee3ng cao cho c\u00f4ng t\u00e1c tr\u1ed3ng r\u1eebng. \u0110i\u1ec1u n\u00e0y l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft v\u00e0 c\u00f3 \u00fd ngh\u0129a khoa h\u1ecdc, th\u1ef1c ti\u1ec5n. Ch\u1ebf ph\u1ea9m \u0111a ch\u1ee7ng vi sinh v\u1eadt c\u00f3 th\u00e0nh ph\u1ea7n trong 10kg nguy\u00ean li\u1ec7u c\u00f3 35% b\u1ed9t apatit, 35% m\u00f9n, 20% Potassium polyacrylamide, 5g b\u00e0o t\u1eed h\u1eefu t\u00ednh n\u1ea5m Pisolithus tinctorius,<\/i> 500ml dung d\u1ecbch VSV sinh IAA, 500ml dung d\u1ecbch VSV ph\u00e2n gi\u1ea3i l\u00e2n, 500ml dung d\u1ecbch VSV \u0111\u1ed1i kh\u00e1ng v\u1edbi n\u1ea5m b\u1ec7nh v\u00e0 500ml dung d\u1ecbch VSV c\u1ed1 \u0111\u1ecbnh nit\u01a1, mang l\u1ea1i m\u1eadt \u0111\u1ed9 t\u1ebf b\u00e0o cao nh\u1ea5t v\u00e0 ho\u1ea1t t\u00ednh c\u1ee7a c\u00e1c ch\u1ee7ng vi sinh v\u1eadt t\u1ed1t nh\u1ea5t. Ch\u1ebf ph\u1ea9m \u0111a ch\u1ee7ng vi sinh v\u1eadt c\u00f3 m\u1eadt \u0111\u1ed9 t\u1ebf b\u00e0o \u00edt thay \u0111\u1ed5i khi b\u1ea3o qu\u1ea3n \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng v\u1edbi th\u1eddi gian 6 th\u00e1ng, b\u00f3n 2 gam ch\u1ebf ph\u1ea9m \u0111a ch\u1ee7ng vi sinh v\u1eadt cho 1 c\u00e2y con \u1edf v\u01b0\u1eddn \u01b0\u01a1m, sau th\u1eddi gian 2 th\u00e1ng \u00edt c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 chi\u1ec1u cao v\u00e0 \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c. Sau 4 th\u00e1ng, 6 th\u00e1ng v\u00e0 8 th\u00e1ng, b\u00f3n 2 gam ch\u1ebf ph\u1ea9m \u0111\u1ec1u cho k\u1ebft qu\u1ea3 v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 chi\u1ec1u cao v\u00e0 \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c, t\u0103ng 23% v\u1ec1 chi\u1ec1u cao v\u00e0 28% \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c so v\u1edbi c\u00f4ng th\u1ee9c \u0111\u1ed1i ch\u1ee9ng. Chi\u1ec1u cao Th\u00f4ng nh\u1ef1a sau 8 th\u00e1ng \u0111\u1ea1t 22,6cm \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c \u0111\u1ea1t 4,12mm, cho t\u1ef7 l\u1ec7 b\u1ecb b\u1ec7nh th\u1ea5p nh\u1ea5t, t\u1ef7 l\u1ec7 c\u1ed9ng sinh cao nh\u1ea5t so v\u1edbi c\u00e1c c\u00f4ng th\u1ee9c b\u00f3n li\u1ec1u l\u01b0\u1ee3ng vi sinh kh\u00e1c v\u00e0 c\u00f4ng th\u1ee9c \u0111\u1ed1i ch\u1ee9ng.T\u1eeb kho\u00e1:<\/i><\/b> C\u00e2y Th\u00f4ng nh\u1ef1a, ch\u1ebf ph\u1ea9m \u0111a ch\u1ee7ng vi sinh v\u1eadt,
\nc\u00e2y con.<\/td>\n<\/tr>\n
\n

Study on the production of multi-racial microorganism inoculum and evaluating its effectiveness for producing Pinus merkusii<\/i> seedlings in the nursery<\/strong><\/p>\n

Pine is a multi-purpose tree, which can generate economic benefits and also protect the environment. However, there is a variety of diseases that pines can suffer in the nursery such as yellow stunted growth by lack of fungal symbiotic association, damping off by Fusarium oxysporum<\/i>. Producing multi-racial microorganism inoculum can help stimulate the growth and reduce diseases of Pinus merkusii<\/i>, meet the demand to produce high quality seedlings for reforestation. Multi-racial microorganism preparation including 35% apatite powder, 35% humus, 5g Pisolithus tinctorius<\/i> symbiotic fungi, 500ml IAA bacteria solution, 500ml microbes decompose phosphate bacteria solution, 500ml antagonistic bacteria pathogenic fungi bacteria solution, 500ml symbiotic bacteria liquyd nitrogen fixed, 20% Potassium polyacrylamide brought the highest microbial density and activity. The microbial density of the inoculum remained nearly unchanged when stored at room temperature in a period of 6 months. Using 2gr of the inoculum per seedling, after 2 month there was insignificant difference in height and stem diameter. After 4 months, 6 months and 8 months, using the inoculum resulted in outstanding results of height and stem diameter (23% and 28% in height compared to the control formula). Pinus merkusii<\/i> after 8 months was 22.6cm in height and 4.12mm in stem diameter, had lowest rate of disease and highest rate of symbiotic than any other microbial and control formulas.<\/p>\n

Keywords:<\/i><\/b> Pinus merkusii<\/i>, Multi-racial microorganism inoculum, seedling<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u00a0<\/b><\/p>\n

\n

13. HI\u1ec6U L\u1ef0C PH\u00d2NG CH\u1ed0NG N\u1ea4M M\u1ee4C V\u00c0 C\u00d4N TR\u00d9NG H\u1ea0I G\u1ed6 C\u1ee6A S\u01a0N PU C\u00d3 PH\u00c2N T\u00c1N NANO TiO2<\/sub>, SiO2<\/sub>, ZnO, Nanoclay<\/strong><\/p>\n

B\u00f9i V\u0103n \u00c1i, Nguy\u1ec5n Duy V\u01b0\u1ee3ng, Nguy\u1ec5n Th\u1ecb H\u1eb1ng, L\u00ea Ng\u1ecdc Hoan, Ho\u00e0ng Th\u1ecb T\u00e1m
\nVi\u1ec7n Nghi\u00ean c\u1ee9u C\u00f4ng nghi\u1ec7p r\u1eebng – Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeTV\u1eadt li\u1ec7u nano \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1n trong s\u01a1n PU nh\u1eb1m n\u00e2ng cao hi\u1ec7u l\u1ef1c b\u1ea3o v\u1ec7 g\u1ed7 tr\u01b0\u1edbc c\u00e1c t\u00e1c nh\u00e2n g\u00e2y h\u1ea1i. G\u1ed7 B\u1ed3 \u0111\u1ec1 Styrax tonkinensis<\/i> \u0111\u01b0\u1ee3c s\u01a1n ph\u1ee7 b\u1eb1ng s\u01a1n PU c\u00f3 ph\u00e2n t\u00e1n c\u00e1c ho\u1ea1t ch\u1ea5t nano \u0111\u01b0\u1ee3c kh\u1ea3o nghi\u1ec7m \u0111\u00e1nh gi\u00e1 hi\u1ec7u l\u1ef1c ph\u00f2ng ch\u1ed1ng n\u1ea5m m\u1ee5c Pleurotus otreatus<\/i> v\u00e0 m\u1ed1i nh\u00e0 Coptotermes gestroi<\/i>. K\u1ebft qu\u1ea3 thu \u0111\u01b0\u1ee3c cho th\u1ea5y s\u01a1n PU ph\u00e2n t\u00e1n nano TiO2<\/sub>, ZnO v\u00e0 Nanoclay cho hi\u1ec7u l\u1ef1c ph\u00f2ng ch\u1ed1ng m\u1ed1i t\u1ed1t; s\u01a1n PU sau khi ph\u00e2n t\u00e1n c\u00e1c ho\u1ea1t ch\u1ea5t nano ZnO n\u1ed3ng \u0111\u1ed9 0,1%, TiO2 <\/sub><100nm n\u1ed3ng \u0111\u1ed9 0,1%, v\u00e0 Nanoclay hydrophilic n\u1ed3ng \u0111\u1ed9 0,5% cho hi\u1ec7u l\u1ef1c ph\u00f2ng ch\u1ed1ng t\u1ed1t v\u1edbi
\nn\u1ea5m m\u1ee5c.T\u1eeb kh\u00f3a:<\/i><\/b> B\u1ea3o qu\u1ea3n g\u1ed7, s\u01a1n PU, v\u1eadt li\u1ec7u nano<\/td>\n<\/tr>\n
\n

Preventive action against rotting fungi and wood boring insects of PU coating enhanced with dispersed nano particles of TiO2<\/sub>, SiO2<\/sub>, ZnO, Nanoclay<\/strong><\/p>\n

Nano particles are dispersed in PU coating material. The wood specimens of Styrax tonkinensis<\/i> were treated by coating layers of nano particles-dispersed PU and subjected to standard test method with the rotting fungi Pleurotus ostreatus<\/i> and the house termite Coptotermes gestroi<\/i>. Resistance was graded according to criteria from the standard test methods. Good -grade resistance was observed with treatments of TiO2<\/sub>, ZnO and Nanoclay nanoparticles, against the tested termite. Against Pleurotus ostreatus<\/i>, PU coating enhanced by ZnO 0.1%, TiO2<\/sub> (<100nm in size) 0.1% and hydrophilic nanoclay 0.5% were treatments with good – grade resistance.<\/p>\n

Keywords:<\/i><\/b> Wood preservation, PU coating, nanoparticles<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

<\/div>\n

14. NGHI\u00caN C\u1ee8U KH\u1ea2 N\u0102NG PH\u00d2NG CH\u1ed0NG N\u1ea4M M\u1ee4C V\u00c0 M\u1ed0I H\u1ea0I G\u1ed6 C\u1ee6A C\u00c1C V\u1eacT LI\u1ec6U NANO TiO2<\/sub>, ZnO, CuO, SiO2<\/sub>, NANOCLAY<\/strong><\/p>\n

B\u00f9i V\u0103n \u00c1i, Nguy\u1ec5n Duy V\u01b0\u1ee3ng, B\u00f9i Th\u1ecb Th\u1ee7y, L\u00ea Ng\u1ecdc Hoan, Ho\u00e0ng Th\u1ecb T\u00e1m
\n<\/i>Vi\u1ec7n Nghi\u00ean c\u1ee9u C\u00f4ng nghi\u1ec7p r\u1eebng – Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/i><\/p>\n\n\n\n\n
T\u00d3M T\u1eaeTV\u1eadt li\u1ec7u nano TiO2<\/sub>, ZnO, CuO, SiO2<\/sub>, Nanoclay \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1n trong dung m\u00f4i n\u01b0\u1edbc v\u00e0 trong keo PF \u0111\u1ec3 nghi\u00ean c\u1ee9u kh\u1ea3 n\u0103ng b\u1ea3o qu\u1ea3n g\u1ed7. G\u1ed7 B\u1ed3 \u0111\u1ec1 Styrax tonkinensis<\/i> \u0111\u01b0\u1ee3c t\u1ea9m c\u00e1c dung d\u1ecbch nano v\u00e0 \u0111\u01b0\u1ee3c kh\u1ea3o nghi\u1ec7m hi\u1ec7u l\u1ef1c ph\u00f2ng ch\u1ed1ng n\u1ea5m m\u1ee5c Pleurotus otreatus<\/i> v\u00e0 m\u1ed1i nh\u00e0 Coptotermes gestroi<\/i>. K\u1ebft qu\u1ea3 kh\u1ea3o nghi\u1ec7m v\u1edbi n\u1ea5m m\u1ee5c P. ostreatus, <\/i>g\u1ed7 \u0111\u01b0\u1ee3c t\u1ea9m dung d\u1ecbch TiO2<\/sub> 0,4%; CuO 0,1 – 0,2% v\u1edbi ch\u1ebf \u0111\u1ed9 t\u1ea9m 0,7Mpa, th\u1eddi gian duy tr\u00ec \u00e1p l\u1ef1c t\u1ea9m 60 ph\u00fat \u0111\u1ea1t hi\u1ec7u l\u1ef1c t\u1ed1t v\u1edbi n\u1ea5m m\u1ee5c. C\u00e1c dung d\u1ecbch ch\u1ee9a c\u00e1c nano c\u00f2n l\u1ea1i \u0111\u1ec1u \u0111\u1ea1t hi\u1ec7u l\u1ef1c trung b\u00ecnh \u0111\u1ebfn k\u00e9m v\u1edbi n\u1ea5m m\u1ee5c. G\u1ed7 t\u1ea9m keo PF 25% thu\u1ea7n, keo PF 25% c\u00f3 ph\u00e2n t\u00e1n v\u1eadt li\u1ec7u nano v\u1edbi ch\u1ebf \u0111\u1ed9 t\u1ea9m 0,7Mpa, th\u1eddi gian duy tr\u00ec \u00e1p l\u1ef1c t\u1ea9m 120 ph\u00fat \u0111\u1ec1u \u0111\u1ea1t hi\u1ec7u l\u1ef1c t\u1ed1t ph\u00f2ng ch\u1ed1ng n\u1ea5m m\u1ee5c. K\u1ebft qu\u1ea3 kh\u1ea3o nghi\u1ec7m hi\u1ec7u l\u1ef1c v\u1edbi m\u1ed1i nh\u00e0 C. <\/i>g<\/i>estroi<\/i>, g\u1ed7 t\u1ea9m dung d\u1ecbch TiO2<\/sub> n\u1ed3ng \u0111\u1ed9 0,2%; CuO 0,1 – 0,2%; ZnO 0,3% v\u00e0 0,4% \u0111\u1ea1t hi\u1ec7u l\u1ef1c t\u1ed1t. Ri\u00eang nano SiO2<\/sub> v\u00e0 nano clay \u0111\u1ea1t hi\u1ec7u l\u1ef1c k\u00e9m v\u1edbi m\u1ed1i. G\u1ed7 t\u1ea9m keo PF 25% thu\u1ea7n c\u00f3 hi\u1ec7u l\u1ef1c trung b\u00ecnh nh\u01b0ng c\u00e1c c\u00f4ng th\u1ee9c PF 25% c\u00f3 ph\u00e2n t\u00e1n v\u1eadt li\u1ec7u nano th\u00ed nghi\u1ec7m \u0111\u1ec1u cho hi\u1ec7u l\u1ef1c t\u1ed1t \u0111\u1ed1i v\u1edbi m\u1ed1i h\u1ea1i g\u1ed7.T\u1eeb kh\u00f3a:<\/i><\/b> B\u1ea3o qu\u1ea3n g\u1ed7, m\u1ed1i Coptotermes gestroi, <\/i>n\u1ea5m m\u1ee5c Pleurotus ostreatus<\/i>, v\u1eadt li\u1ec7u nano<\/td>\n<\/tr>\n
\n

Studying on the protective effectiveness of <\/i>wood treated with nanomaterials TiO2<\/sub>, ZnO, CuO, SiO2<\/sub>, nanoclay against wood destroying basidiomycetes and termites<\/strong><\/p>\n

Nanomaterials TiO2<\/sub>, ZnO, CuO, SiO2<\/sub>, Nanoclay were dispersed in water solvent and PF for researching wood protective effectiveness. Styrax tonkinensis<\/i> wood treated with nanomaterials was tested for determining the protective effectiveness of wood preservatives against wood destroying basidiomycetes and termites. Against the rotting fungi Pleurotus ostreatus<\/i>, high effectiveness was observed in specimens treated with TiO2<\/sub> suspensions 0.4% and CuO suspensions (0.1 – 0.2%) by vacuum-pressure method at 0.7Mpa in 60 minutes. Specimens treated with suspensions of other nano material demonstrated average and low effectiveness. High effectiveness was observed in specimens treated with PF 25% with or without nano material by vacuum-pressure method at 0.7Mpa in 120 minutes. Against the termite Coptotermes gestroi<\/i>, Styrax tonkinensis<\/i> wood trated with TiO2<\/sub> suspensions (0.2%), CuO suspensions (0.1 – 0.2%) and ZnO suspensions (0.3 and 0.4%) demonstrated good resistance, while suspensions of the same agents at other concentration illustrated average effectiveness. Low effectiveness was observed at specimens treated with nano clay and nano SiO2<\/sub>. Wood specimens of Styrax tonkinensis<\/i> treated with nano materials illustrated good effectiveness, while other specimens treated with PF 25%, without nano material illustrated avareage effectiveness.<\/p>\n

Key words:<\/i><\/b> Wood preservation, <\/i>Coptotermes gestroi, Pleurotus ostreatus<\/i>, <\/i>nanomaterials.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u00a0<\/b><\/p>\n","protected":false},"excerpt":{"rendered":"

T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 3 – 2015 1. T\u00ecnh h\u00ecnh th\u1ef1c hi\u1ec7n chi\u1ebfn l\u01b0\u1ee3c nghi\u00ean c\u1ee9u l\u00e2m nghi\u1ec7p Vi\u1ec7t Nam (2008 – 2020) – c\u00e1c kho\u1ea3ng tr\u1ed1ng v\u00e0 nh\u1eefng th\u00e1ch th\u1ee9c Nguy\u1ec5n Xu\u00e2n Qu\u00e1t Ho\u00e0ng V\u0103n Th\u1eafng The implementation of forestry research strategy (2008 – 2020) in Vietnam – The gaps and […]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[26,24],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/1468"}],"collection":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/comments?post=1468"}],"version-history":[{"count":8,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/1468\/revisions"}],"predecessor-version":[{"id":1708,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/1468\/revisions\/1708"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/media?parent=1468"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/categories?post=1468"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/tags?post=1468"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}