1. RESULTS OF CAMMELIA SASANQUA <\/i>SELECTION PLUS TREE AND CLONAL TEST BY THE METHOD OF SHIFTED-CROWN GRAFTING IN NGHIA DAN \u2013 NGHE AN<\/b><\/p>\n
Hoang Van Thang<\/b><\/p>\n
Silviculture Techniques Research Division<\/i><\/p>\n
Forest Science Institute of Vietnam<\/i><\/p>\n
\u00a0<\/b><\/p>\n
SUMMARY<\/b><\/p>\n
\u00a0<\/b><\/p>\n
After 3 years of monitoring and selecting, five plus trees were selected at Nghia Loc Commune – Nghia Dan District\u2013 Nghe An Province. The plus trees gained yield and oil content higher 20% and 15% respectively than those of the average value in the population. The results of Cammelia sasanqua<\/i> clonal test\u00a0 <\/b>by the method of shifted-crown grafting reveals the survival rate of grafted buds from the plus trees is about 46.2-57.4% after 1 year of planting. Growth of grafted buds from the plus trees shows a significant difference (Sig < 0.05). The growth rate in diameter and height of grafted buds from the clones NA13 and NA15 is maximum and categorized in a group, mean while those of the clones NA1, NA6 and NA8 is lower and quite homogeneity. Level of the difference in diameter and height and crown diameter of the grafted buds from the clone NA1 is highest.<\/p>\n
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Keywords: <\/b>Plus tree, Colonal test, Shift-crown grafting, Grafted bud.<\/p>\n
\u00a0<\/b><\/p>\n
K\u1ebeT QU\u1ea2 CH\u1eccN L\u1eccC C\u00c2Y TR\u1ed8I V\u00c0 KH\u1ea2O NGHI\u1ec6M D\u00d2NG V\u00d4 T\u00cdNH S\u1ede B\u1eb2NG PH\u01af\u01a0NG PH\u00c1P GH\u00c9P \u0110\u1ed4I T\u00c1N \u1ede NGH\u0128A \u0110\u00c0N – NGH\u1ec6 AN <\/b><\/p>\n
\u00a0<\/b><\/p>\n
Ho\u00e0ng V\u0103n Th\u1eafng<\/b><\/p>\n
Ph\u00f2ng Nghi\u00ean c\u1ee9u K\u1ef9 thu\u1eadt L\u00e2m sinh<\/i><\/p>\n
Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/i><\/p>\n
\u00a0<\/i><\/p>\n
\u00a0<\/b><\/p>\n
T\u00d3M T\u1eaeT<\/b><\/p>\n
Sau 3 n\u0103m theo d\u00f5i v\u00e0 ch\u1ecdn l\u1ecdc, \u0111\u1ec1 t\u00e0i \u0111\u00e3 ch\u1ecdn \u0111\u01b0\u1ee3c 5 c\u00e2y tr\u1ed9i t\u1ea1i Ngh\u0129a L\u1ed9c – Ngh\u0129a \u0110\u00e0n – Ngh\u1ec7 An. \u0110\u00e2y l\u00e0 5 c\u00e2y tr\u1ed9i cho s\u1ea3n l\u01b0\u1ee3ng h\u1ea1t cao h\u01a1n t\u1eeb 20% v\u00e0 h\u00e0m l\u01b0\u1ee3ng d\u1ea7u cao h\u01a1n t\u1eeb 15% so v\u1edbi trung b\u00ecnh qu\u1ea7n th\u1ec3. K\u1ebft qu\u1ea3 kh\u1ea3o nghi\u1ec7m d\u00f2ng v\u00f4 t\u00ednh S\u1edf b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gh\u00e9p \u0111\u1ed5i t\u00e1n cho th\u1ea5y sau 1 n\u0103m t\u1ef7 l\u1ec7 s\u1ed1ng c\u1ee7a ch\u1ed3i gh\u00e9p l\u1ea5y t\u1eeb 5 c\u00e2y tr\u1ed9i n\u00f3i tr\u00ean \u0111\u1ea1t t\u1eeb 46,2-57,4%. Sinh tr\u01b0\u1edfng c\u1ee7a ch\u1ed3i gh\u00e9p l\u1ea5y t\u1eeb 5 c\u00e2y tr\u1ed9i sau 1 n\u0103m \u0111\u00e3 c\u00f3 s\u1ef1 kh\u00e1c nhau t\u01b0\u01a1ng \u0111\u1ed1i r\u00f5 r\u1ec7t (Sig <0,05). Sinh tr\u01b0\u1edfng v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u cao c\u1ee7a ch\u1ed3i gh\u00e9p l\u1ea5y t\u1eeb c\u00e2y tr\u1ed9i NA13 v\u00e0 NA15 \u0111\u1ea1t gi\u00e1 tr\u1ecb cao nh\u1ea5t v\u00e0 \u0111\u01b0\u1ee3c x\u1ebfp v\u00e0o c\u00f9ng m\u1ed9t nh\u00f3m trong khi \u0111\u00f3 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng c\u1ee7a ch\u1ed3i gh\u00e9p l\u1ea5y t\u1eeb c\u00e2y tr\u1ed9i NA1, NA6 v\u00e0 NA8 \u0111\u1ea1t th\u1ea5p h\u01a1n v\u00e0 c\u00f3 sinh tr\u01b0\u1edfng g\u1ea7n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng nhau. M\u1ee9c \u0111\u1ed9 ph\u00e2n h\u00f3a v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh, chi\u1ec1u cao v\u00e0 \u0111\u01b0\u1eddng k\u00ednh t\u00e1n c\u1ee7a ch\u1ed3i gh\u00e9p l\u1ea5y t\u1eeb d\u00f2ng NA1 \u0111\u1ec1u \u0111\u1ea1t cao nh\u1ea5t.<\/p>\n
T\u1eeb kh\u00f3a: <\/b>C\u00e2y tr\u1ed9i, D\u00f2ng v\u00f4 t\u00ednh, Gh\u00e9p \u0111\u1ed5i t\u00e1n, Ch\u1ed3i gh\u00e9p<\/p>\n
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2. EFFECTS OF PRESERVATION METHODS ON SEED GERMINATION OF CAM LAI VU (DALBERGIA OLIVER<\/i> PIERRE)<\/b><\/p>\n
Tran Quang Bao<\/b><\/p>\n
Vietnam<\/i> ForestryUniversity<\/i><\/b><\/p>\n
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SUMMARY<\/b><\/p>\n
Time and method of preservation that affect the ability of seed germination, to determine preservation techniques for seed of Cam lai vu (Dalbergia oliver<\/i> Pierre), we have conducted six trials of different preserved formulas: preserve the fabric bag; store in sealed jars, storage in sealed jars with ash mixing rate of 2.5% of seed weight; store in sealed jars with ash mixing rate of 5% of seed weight; store in sealed jars with ash mixing rate of 10% of seed weight; store seeds in a black bag and preserve at temperature 50<\/sup> C. We implemented each preserved formula in seven different storage times, including 5 days, 10 days, 20 days, 30 days, 50 days, 70 days and 90 days. By using statistical analysis, the experimental results showed that storage method did not affect the ability of seed germination. But time of preservation is the deciding factor of the rate of seed germination. The best time for seed germination is 5 days and the worst is 20 days, the other time preservations are giving the same results.<\/p>\n Keywords<\/b>: Dalbergia oliver<\/i> Pierre, Seed preservation, Germination, Propagation.<\/p>\n \u00a0<\/b><\/p>\n \u1ea2NH H\u01af\u1edeNG C\u1ee6A PH\u01af\u01a0NG PH\u00c1P B\u1ea2O QU\u1ea2N \u0110\u1ebeN T\u1ef6 L\u1ec6 N\u1ea2Y M\u1ea8M C\u1ee6A H\u1ea0T C\u1ea8M LAI V\u00da<\/b> (Dalbergia<\/i><\/b> oliver<\/i><\/b> Pierre<\/b>)<\/p>\n Tr\u1ea7n Quang B\u1ea3o<\/b><\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t nam<\/i><\/p>\n T\u00d3M T\u1eaeT<\/b><\/p>\n Th\u1eddi gian v\u00e0 ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o qu\u1ea3n c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng n\u1ea3y m\u1ea7m c\u1ee7a h\u1ea1t gi\u1ed1ng c\u00e2y r\u1eebng. \u0110\u1ec3 x\u00e1c \u0111\u1ecbnh k\u1ef9 thu\u1eadt b\u1ea3o qu\u1ea3n \u0111\u1ed1i v\u1edbi h\u1ea1t C\u1ea9m lai v\u00fa, ch\u00fang t\u00f4i \u0111\u00e3 ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m 6 c\u00f4ng th\u1ee9c b\u1ea3o qu\u1ea3n kh\u00e1c nhau: B\u1ea3o qu\u1ea3n trong bao v\u1ea3i; b\u1ea3o qu\u1ea3n trong h\u0169 b\u1ecbt k\u00edn; b\u1ea3o qu\u1ea3n trong h\u0169 b\u1ecbt k\u00edn tr\u1ed9n tro theo t\u1ef7 l\u1ec7 2,5% kh\u1ed1i l\u01b0\u1ee3ng h\u1ea1t; b\u1ea3o qu\u1ea3n trong h\u0169 b\u1ecbt k\u00edn tr\u1ed9n tro theo t\u1ef7 l\u1ec7 5% kh\u1ed1i l\u01b0\u1ee3ng h\u1ea1t; b\u1ea3o qu\u1ea3n trong h\u0169 b\u1ecbt k\u00edn tr\u1ed9n tro theo t\u1ef7 l\u1ec7 10% kh\u1ed1i l\u01b0\u1ee3ng h\u1ea1t; \u0111\u1ef1ng h\u1ea1t trong t\u00fai \u0111en v\u00e0 b\u1ea3o qu\u1ea3n \u1edf nhi\u1ec7t \u0111\u1ed9 5o<\/sup>C. V\u1edbi m\u1ed7i c\u00f4ng th\u1ee9c b\u1ea3o qu\u1ea3n, ch\u00fang t\u00f4i c\u0169ng th\u1eed nghi\u1ec7m trong c\u00e1c th\u1eddi gian b\u1ea3o qu\u1ea3n kh\u00e1c nhau l\u00e0 5 ng\u00e0y, 10 ng\u00e0y, 20 ng\u00e0y, 30 ng\u00e0y, 50 ng\u00e0y, 70 ng\u00e0y v\u00e0 90 ng\u00e0y. Sau khi ph\u00e2n t\u00edch th\u1ed1ng k\u00ea, c\u00e1c k\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m cho th\u1ea5y ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o qu\u1ea3n kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng n\u1ea3y m\u1ea7m c\u1ee7a h\u1ea1t,nh\u01b0ng th\u1eddi gian b\u1ea3o qu\u1ea3n l\u00e0 nh\u00e2n t\u1ed1 quy\u1ebft \u0111\u1ecbnh t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m c\u1ee7a h\u1ea1t gi\u1ed1ng. Th\u1eddi gian b\u1ea3o qu\u1ea3n t\u1ed1t nh\u1ea5t cho n\u1ea3y m\u1ea7m l\u00e0 5 ng\u00e0y v\u00e0 k\u00e9m nh\u1ea5t l\u00e0 20 ng\u00e0y; c\u00e1c th\u1eddi gian b\u1ea3o qu\u1ea3n kh\u00e1c cho k\u1ebft qu\u1ea3 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng.<\/p>\n T\u1eeb kh\u00f3a: <\/i><\/b>C\u1ea9m lai v\u00fa, B\u1ea3o qu\u1ea3n h\u1ea1t gi\u1ed1ng, T\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m, Nh\u00e2n gi\u1ed1ng.<\/p>\n <\/p>\n 3. RESEACH RESULTS ON PROPAGATION OF SONNERATIA CASEOLARIS<\/i><\/b><\/p>\n Doan Dinh Tam<\/b><\/p>\n Forest Ecology and Environment Reseach Center<\/i><\/p>\n Forest Science Institute of Vietnam<\/i><\/p>\n SUMMARY<\/b><\/p>\n The nurseries of Sonneratia caseolaris<\/i> species were suitable with flat sites, a lot of silt and high and low tide with tide flooded 20-25cm, pH 1-20%\u00ado<\/sub> and not directly affected by ware. Sonneratia caseolaris<\/i> seeds were harvested in mid-September with a high rate of solid seeds (18.8g\/1000 seeds) and the highest germination rate were 87.5%. After harvesting, seeds were treated and planted nursery immediately which have the highest germination rate (90.5%), long-stored seeds were decreased the germination rate. The processes of seed germination were from 3 to 15 days and the highest germination rate (87.5%).<\/p>\n Seedlings grow quickly and evenly when carrying \u00bd seeds plugged directly into the soil with germination rate was 87.5%. Plant has the lowest growth targets when seeds were sown on pocket size 12 x 18 cm and tree grows well when planted on the pocket size 25 x 30cm.<\/p>\n In period up to 1 year age in nurseries, Sonneratia caseolaris<\/i> species were grow better if apply additional fertilizer of 40g P\/ pocket.<\/p>\n Keywords:<\/b> Sonneratia caseolaris<\/i> species, Seeds, Sowing, Germination rate<\/p>\n K\u1ebeT QU\u1ea2 NGHI\u00caN C\u1ee8U M\u1ed8T S\u1ed0 GI\u1ea2I PH\u00c1P \u01af\u01a0M GI\u1ed0NG C\u00c2Y B\u1ea6N CHUA (Sonneratia caseolaris)<\/i><\/b><\/p>\n <\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b>\u0110o\u00e0n \u0110\u00ecnh Tam <\/b><\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/i>Trung t\u00e2m Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng<\/i><\/p>\n Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/i><\/p>\n \u00a0<\/i><\/p>\n <\/p>\n T\u00d3M T\u1eaeT<\/b><\/p>\n V\u01b0\u1eddn \u01b0\u01a1m c\u00e2y B\u1ea7n chua th\u00edch h\u1ee3p nh\u1ea5t t\u1ea1i n\u01a1i b\u1eb1ng ph\u1eb3ng, nhi\u1ec1u ph\u00f9 sa, th\u1ee7y tri\u1ec1u ra v\u00e0o th\u01b0\u1eddng xuy\u00ean v\u1edbi \u0111\u1ed9 ng\u1eadp tri\u1ec1u 20 –\u00a0 25cm, \u0111\u1ed9 pH t\u1eeb 1 \u2013 20o<\/sup>\/oo<\/sub>, kh\u00f4ng ch\u1ecbu t\u00e1c \u0111\u1ed9ng tr\u1ef1c ti\u1ebfp c\u1ee7a s\u00f3ng. H\u1ea1t B\u1ea7n chua thu h\u00e1i v\u00e0o trung tu\u1ea7n th\u00e1ng 9 c\u00f3 t\u1ef7 l\u1ec7 h\u1ea1t ch\u1eafc cao (18,8g\/1000 h\u1ea1t) v\u00e0 t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m cao nh\u1ea5t (87,5%). H\u1ea1t gi\u1ed1ng sau khi thu h\u00e1i, ti\u1ebfn h\u00e0nh x\u1eed l\u00fd v\u00e0 gieo \u01b0\u01a1m ngay cho t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m cao nh\u1ea5t (90,5%), b\u1ea3o qu\u1ea3n h\u1ea1t c\u00e0ng l\u00e2u th\u00ec t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m c\u00e0ng gi\u1ea3m. Qu\u00e1 tr\u00ecnh n\u1ea3y m\u1ea7m c\u1ee7a h\u1ea1t di\u1ec5n ra t\u1eeb 3 \u0111\u1ebfn 15 ng\u00e0y, t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m \u0111\u1ea1t 90,6%.<\/p>\n C\u00e2y con sinh tr\u01b0\u1edfng nhanh v\u00e0 \u0111\u1ed3ng \u0111\u1ec1u khi ti\u1ebfn h\u00e0nh c\u1eafm \u00bd h\u1ea1t tr\u1ef1c ti\u1ebfp v\u00e0o \u0111\u1ea5t v\u1edbi t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m l\u00e0 87,5%. H\u1ea1t \u0111\u01b0\u1ee3c gieo v\u00e0o t\u00fai b\u1ea7u k\u00edch th\u01b0\u1edbc 12x18cm c\u00e2y c\u00f3 c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng th\u1ea5p nh\u1ea5t, c\u0169ng t\u1ea1i th\u00ed nghi\u1ec7m n\u00e0y th\u00ec c\u00e2y sinh tr\u01b0\u1edfng t\u1ed1t khi gieo h\u1ea1t v\u00e0o t\u00fai b\u1ea7u c\u00f3 k\u00edch th\u01b0\u1edbc 25x30cm.<\/p>\n \u1ede giai \u0111o\u1ea1n \u0111\u1ebfn 1 n\u0103m tu\u1ed5i trong v\u01b0\u1eddn \u01b0\u01a1m, c\u00e2y B\u1ea7n chua sinh tr\u01b0\u1edfng t\u1ed1t h\u01a1n n\u1ebfu \u0111\u01b0\u1ee3c b\u00f3n b\u1ed5 sung 40g Super l\u00e2n\/b\u1ea7u.<\/p>\n T\u1eeb kho\u00e1<\/b>: B\u1ea7n chua, H\u1ea1t gi\u1ed1ng, Gieo \u01b0\u01a1m, T\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m<\/p>\n <\/p>\n 4. RESEACH ON ECOLOGICAL CHARACTERISTICS OF REGENERATION ANISOPTERA COCHINCHINENSIS<\/i> PIERREIN FOREST TYPES CLOSED EVERGREEN AND SEMI-EVERGREEN IN DONG NAI PROVINCE<\/b><\/p>\n \u00a0<\/b><\/p>\n Pham Van Huong<\/b><\/p>\n Forest<\/i> University of Vietnam in the South<\/i><\/p>\n SUMMARY<\/b><\/p>\n The South East in general and Dong Nai province in particular, Dipterocarpaceae<\/i> is an important in forest ecosystems. Especially those species with economic value, ecological value, and conservation value. Anisoptera cochinchinensis<\/i> is speceis that has these characteristics. Really, Anisoptera cochinchinensis<\/i> is species being studied to choose to afforest to restore forest. Up to now, to have some researched the family Dipterocarpaceae <\/i>or Anisoptera cochinchinensis<\/i>, but not the clarify rule life, rule regeneration and ecological characteristics. So reseach on ecological characteristics of regeneration Anisoptera cochinchinensis <\/i>in forest types closed evergreen and semi-evergreen in Dong Nai province is significant.<\/p>\n The purpose of the paper is to provide the database to clarify the ecological characteristics of regeneration Anisoptera cochinchinensis<\/i> in forest types closed evergreen and semi-evergreen tropical moist in Dong Nai and the scientific basis for the application of measures regeneration (natural and artificial) and nurture Anisoptera cochinchinensis<\/i>. Results showed:<\/p>\n – Abundance of regeneration Anisoptera cochinchinensis <\/i>in two levels age depends on the forest type, soil humidity and forest cover. Soil humidity appropriate for level 1 age from 61.8 to 82.3%. Optimize is 73.0%; at level 2 age, respectively from 62.8 to 83.9% and 73.0%. Forest cover appropriate for level 1 age from 0.65 to 0.85. Optimize is 0.75; at age 2 from 0.63 to 0.88. Optimize is 0.75.<\/p>\n – Abundance of regeneration Anisoptera cochinchinensis <\/i>changes depending on changes in two factors: Soil humidity and forest cover. This relationship can be described by Logit Gauss model is 2 variables.<\/p>\n – When forest type changes, the soil humidity and forest cover effect to degrees abundance different of Anisoptera cochinchinensis<\/i>. The forest types are stable (IIIA2<\/sub> and IIIA3<\/sub>), ensure for Anisoptera cochinchinensis<\/i> regenerate best than the forest types unstable (IIB and IIIA1<\/sub>).<\/p>\n Keywords:<\/b> Regeneration Anisoptera cochinchinensis<\/i>, Abundance, Probability appear, Soil humidity, Forest cover, Logit Gauss model<\/p>\n \u00a0<\/b><\/p>\n NGHI\u00caN C\u1ee8U \u0110\u1eb6C T\u00cdNH SINH TH\u00c1I C\u1ee6A C\u00c2Y T\u00c1I SINH V\u00caN V\u00caN<\/b><\/p>\n (Anisoptera cochinchinensis <\/i>Pierre) TRONG KI\u1ec2U R\u1eeaNG K\u00cdN TH\u01af\u1edcNG XANH<\/b><\/p>\n V\u00c0 N\u1eecA R\u1ee4NG L\u00c1 \u1ea8M NHI\u1ec6T \u0110\u1edaI \u1ede \u0110\u1ed2NG NAI<\/b><\/p>\n \u00a0<\/b><\/p>\n Ph\u1ea1m V\u0103n H\u01b0\u1eddng <\/b><\/p>\n C\u01a1 s\u1edf 2 Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p<\/i><\/p>\n \u00a0<\/i><\/p>\n T\u00d3M T\u1eaeT<\/b><\/p>\n \u1ede \u0110\u00f4ng Nam B\u1ed9 n\u00f3i chung v\u00e0 \u0110\u1ed3ng Nai n\u00f3i ri\u00eang, c\u00e2y h\u1ecd Sao \u2013 D\u1ea7u trong h\u1ec7 sinh th\u00e1i r\u1eebng c\u00f3 vai tr\u00f2 quan tr\u1ecdng, \u0111\u1eb7c bi\u1ec7t l\u00e0 nh\u1eefng lo\u00e0i c\u00e2y c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf, sinh th\u00e1i v\u00e0 b\u1ea3o t\u1ed3n. T\u1eeb tr\u01b0\u1edbc \u0111\u1ebfn nay \u0111\u00e3 c\u00f3 m\u1ed9t s\u1ed1 c\u00f4ng tr\u00ecnh nghi\u00ean c\u1ee9u v\u1ec1 c\u00e2y h\u1ecd Sao \u2013 D\u1ea7u ho\u1eb7c v\u00ean v\u00ean;tuy nhi\u00ean, nh\u1eefng nghi\u00ean c\u1ee9u n\u00e0y ch\u01b0a l\u00e0m r\u00f5 \u0111\u01b0\u1ee3c quy lu\u1eadt s\u1ed1ng, qu\u00e1 tr\u00ecnh t\u00e1i sinh, \u0111\u1eb7c t\u00ednh sinh th\u00e1i c\u1ee7a ch\u00fang. Cho n\u00ean vi\u1ec7c nghi\u00ean c\u1ee9u \u0111\u1eb7c t\u00ednh sinh th\u00e1i c\u00e2y t\u00e1i sinh V\u00ean v\u00ean trong ki\u1ec3u r\u1eebng k\u00edn th\u01b0\u1eddng xanh v\u00e0 n\u1eeda r\u1ee5ng l\u00e1 \u1edf \u0110\u1ed3ng Nai l\u00e0 vi\u1ec7c l\u00e0m h\u1ebft s\u1ee9c c\u00f3 \u00fd ngh\u0129a. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y: \u0110\u1ed9 phong ph\u00fa c\u1ee7a t\u00e1i sinh V\u00ean v\u00ean \u1edf 2 c\u1ea5p tu\u1ed5i \u0111\u1ec1u ph\u1ee5 thu\u1ed9c v\u00e0o tr\u1ea1ng th\u00e1i r\u1eebng, \u0111\u1ed9 \u1ea9m \u0111\u1ea5t v\u00e0 \u0111\u1ed9 t\u00e0n che t\u00e1n r\u1eebng. \u0110\u1ed9 \u1ea9m \u0111\u1ea5t th\u00edch h\u1ee3p cho c\u1ea5p tu\u1ed5i 1 t\u1eeb 61,8 – 82,3%, t\u1ed1i \u01b0u l\u00e0 73,0%; \u1edf c\u1ea5p tu\u1ed5i 2 t\u01b0\u01a1ng \u1ee9ng l\u00e0 62,8 – 83,9% v\u00e0 73,0%. \u0110\u1ed9 t\u00e0n che t\u00e1n r\u1eebng th\u00edch h\u1ee3p cho c\u1ea5p tu\u1ed5i 1 l\u00e0 0,65 \u2013 0,85, t\u1ed1i \u01b0u 0,75; \u1edf c\u1ea5p tu\u1ed5i 2 t\u1eeb 0,63 – 0,88, t\u1ed1i \u01b0u l\u00e0 0,75. \u0110\u1ed9 phong ph\u00fa c\u1ee7a t\u00e1i sinh V\u00ean v\u00ean thay \u0111\u1ed5i t\u00f9y thu\u1ed9c v\u00e0o s\u1ef1 thay \u0111\u1ed5i c\u1ee7a 2 y\u1ebfu t\u1ed1 \u0111\u1ed9 \u1ea9m \u0111\u1ea5t v\u00e0 \u0111\u1ed9 t\u00e0n che t\u00e1n r\u1eebng. M\u1ed1i li\u00ean h\u1ec7 n\u00e0y c\u00f3 th\u1ec3 m\u00f4 t\u1ea3 b\u1eb1ng nh\u1eefng m\u00f4 h\u00ecnh Logit Gauss 2 bi\u1ebfn s\u1ed1.\u00a0 Khi tr\u1ea1ng th\u00e1i r\u1eebng thay \u0111\u1ed5i, th\u00ec \u0111\u1ed9 \u1ea9m \u0111\u1ea5t t\u1ea7ng \u0111\u1ea5t m\u1eb7t v\u00e0 \u0111\u1ed9 t\u00e0n che t\u00e1n r\u1eebng c\u00f3 \u1ea3nh h\u01b0\u1edfng kh\u00e1c nhau \u0111\u1ebfn \u0111\u1ed9 phong ph\u00fa c\u1ee7a V\u00ean v\u00ean. Nh\u1eefng tr\u1ea1ng th\u00e1i r\u1eebng \u1ed5n \u0111inh cao (IIIA2<\/sub> v\u00e0 IIIA3<\/sub>) \u0111\u1ea3m b\u1ea3o cho c\u00e2y V\u00ean v\u00ean t\u00e1i sinh t\u1ed1t h\u01a1n so v\u1edbi nh\u1eefng tr\u1ea1ng th\u00e1i r\u1eebng k\u00e9m \u1ed5n \u0111\u1ecbnh (IIB v\u00e0 IIIA1<\/sub>).<\/p>\n T\u1eeb kho\u00e1: <\/b>C\u00e2y t\u00e1i sinh V\u00ean v\u00ean, \u0110\u1ed9 phong ph\u00fa, X\u00e1c su\u1ea5t b\u1eaft g\u1eb7p, \u0110\u1ed9 \u1ea9m \u0111\u1ea5t, \u0110\u1ed9 t\u00e0n che v\u00e0 M\u00f4 h\u00ecnh Logit Gauss<\/p>\n <\/p>\n 5. MICHELIA FLAVIFLORA <\/i><\/b>Y. W. LAW & Y. F. WU <\/i>AND MICHELIA CHAMPACA <\/i>L. VAR. <\/i>PUBINERVIA (BLUME) MIQUEL <\/i>(MAGNOLIACEAE) <\/i>IN VIETNAM<\/b><\/p>\n Vu Quang Nam<\/b><\/p>\n Vietnam Forestry University<\/i><\/p>\n Xia Nian He<\/b><\/p>\n South China Botanical Garden, Chinese Academy of Sciences<\/i><\/p>\n \u00a0<\/i><\/p>\n SUMMARY<\/b><\/p>\n Michelia flaviflora<\/i> Y. W. Law & Y. F. Wu, a well-known species in the southeastern China and Michelia champaca<\/i> L. var. pubinervia (Blume) Miquel, a good variety distributed in India, Indonesia, Malaysia, Myanmar, Nepal, Thailand and China, have been reported to occur in Vietnam, but their distributions, colletion numbers, and preserving places are still being obscure as well as they are unknown species for Vietnamese botanists. By examination specimens of Poilane 3903 (P, VNM), Poilane 21121 (P), Schmid s.n.<\/i> (P) and additional collections of Nam 181209.6 (IBSC, VFU), Nam 40109.20 (IBSC, VFU), Tran Van Tu HL 15 (VFU) from the botanical expedition in Sapa, Lao Cai Province and together with careful comparation with the typus specimens of Wang 100120 (IBSC) and authenticated specimen of Chen Bao Liang 87T-065 (SYS), they are confirmed as new records for flora of Vietnam. Michelia flaviflora<\/i> has the most remarkable characters such as: leaf blade narrowly elliptic, papery, abaxially glaucous and white hairy, and petiole short, without a stipular scar; it was found in Hoang Lien Mts., where is nearly bordered on China. Michelia champaca<\/i> var. pubinervia<\/i> has its notable characters as leaf blade broadly elliptic, base cunneat to rounded, apical acumen often rather short and stipular scar 0.3-0.7 as long as petiole; it has its natural distribution in the Langbiang Plateau, Lam Dong Province. Thus, totally 22 species and 1 variety of the genus Michelia<\/i> are heretofore recognized from Vietnam. \u00a0\u00a0\u00a0<\/i><\/p>\n Keywords:<\/b> New species, Michelia flaviflora, Michelia champaca<\/i> Var. Pubinervia, Michelia<\/i>, Vietnam. <\/i><\/p>\n <\/p>\n M\u00e9t lo\u00b5i v\u00b5 m\u00e9t th\u00f8 thu\u00e9c chi gi\u00e6i (Magnoliaceae: Michelia<\/i> l.) \u00ae\u00ad\u00eec b\u00e6 sung ch\u00ddnh th\u00f8c cho h\u00d6 th\u00f9c v\u00cbt vi\u00d6t nam<\/b><\/p>\n <\/p>\n V\u00f2 Quang Nam<\/b><\/p>\n Tr\u00ad\u00eang \u00a7\u00b9i h\u00e4c L\u00a9m nghi\u00d6p Vi\u00d6t Nam<\/i><\/p>\n Xia Nian He<\/b><\/p>\n Vi\u00d6n Th\u00f9c v\u00cbt Nam Trung Hoa<\/i><\/p>\n T\u00e3M t\u00bet<\/b><\/p>\n Gi\u00e6i l\u00b8 b\u00b9c (Michelia flaviflora<\/i> Y. W. Law & Y. F. Wu) \u00ae\u00ad\u00eec ghi nh\u00cbn c\u00e3 ph\u00a9n b\u00e8 \u00eb v\u00efng \u00a7\u00abng Nam c\u00f1a t\u00d8nh V\u00a9n Nam, Trung Qu\u00e8c v\u00b5 Ho\u00b5ng lan l\u00b8 xoan (Michelia champaca<\/i> L. var. pubinervia<\/i> (Blume) Miquel) ghi nh\u00cbn c\u00e3 \u00eb \u00can \u00a7\u00e9, In-\u00ae\u00ab-n\u00aa-xi-a, Ma-lai-xi-a, Mi-an-ma, N\u00aa-pan, Th\u00b8i Lan v\u00b5 Trung Qu\u00e8c. Lo\u00b5i v\u00b5 th\u00f8 gi\u00e6i n\u00e3i tr\u00aan \u00ae\u00b7 \u00ae\u00ad\u00eec \u00ae\u00d2 c\u00cbp v\u00d2 s\u00f9 ph\u00a9n b\u00e8 cho Vi\u00d6t Nam (Xia et al. 2008) nh\u00adng ch\u00f3ng kh\u00abng \u00ae\u00ad\u00eec ch\u00d8 r\u00e2 v\u00efng ph\u00a9n b\u00e8 c\u00f4 th\u00d3, s\u00e8 hi\u00d6u ti\u00aau b\u00b6n, n\u00aci l\u00adu gi\u00f7 ti\u00aau b\u00b6n v.v., hay c\u00f2ng c\u00e3 nh\u00f7ng m\u00cbp m\u00ea v\u00d2 s\u00f9 t\u00e5n t\u00b9i \u00ae\u00e9c l\u00cbp c\u00f1a ch\u00f3ng (Chen & Nooteboom, 1993); ch\u00f3ng c\u00f2ng ch\u00ada t\u00f5ng \u00ae\u00ad\u00eec nh\u00bec \u00ae\u00d5n trong b\u00cat c\u00f8 t\u00b5i li\u00d6u chuy\u00aan kh\u00b6o n\u00e0o v\u00d2 ph\u00a9n lo\u00b9i th\u00f9c v\u00cbt c\u00f1a Vi\u00d6t Nam. D\u00f9a tr\u00aan nh\u00f7ng nghi\u00aan c\u00f8u t\u00b5i li\u00d6u c\u00e3 li\u00aan quan, c\u00ac s\u00eb h\u00d7nh th\u00b8i c\u00f1a c\u00b8c m\u00c9u v\u00cbt \u00aeang d\u00ad\u00eec l\u00adu gi\u00f7 t\u00b9i ph\u00dfng ti\u00aau b\u00b6n th\u00f9c v\u00cbt c\u00f1a B\u00b6o t\u00b5ng l\u00dech s\u00f6 t\u00f9 nhi\u00aan Paris (P), Vi\u00d6n sinh h\u00e4c nhi\u00d6t \u00ae\u00edi TP. H\u00e5 Ch\u00dd Minh (VNM), Vi\u00d6n th\u00f9c v\u00cbt Nam Trung Hoa (IBSC), c\u00f2ng nh\u00ad c\u00b8c m\u00c9u v\u00cbt g\u00e5m do ch\u00ddnh t\u00b8c gi\u00b6 thu \u00ae\u00ad\u00eec t\u00f5 v\u00efng n\u00f3i Ho\u00b5ng Li\u00aan S\u00acn, t\u00d8nh L\u00b5o Cai, lo\u00b5i v\u00b5 th\u00f8 gi\u00e6i tr\u00aan ch\u00ddnh th\u00f8c \u00ae\u00ad\u00eec ghi nh\u00cbn c\u00e3 \u00eb Vi\u00d6t Nam. T\u00aan \u00ae\u00dea ph\u00ad\u00acng c\u00f1a ch\u00f3ng \u00b8m ch\u00d8 \u00ae\u00c6c \u00aei\u00d3m n\u00e6i b\u00cbt d\u00d4 nh\u00cbn ra nh\u00cat trong s\u00e8 c\u00b8c lo\u00b5i gi\u00e6i \u00ae\u00b7 bi\u00d5t \u00eb Vi\u00d6t Nam. V\u00edi ghi nh\u00cbn n\u00b5y \u00ae\u00b7 n\u00a9ng t\u00e6ng s\u00e8 lo\u00b5i trong chi Gi\u00e6i (Michelia<\/i> L.) c\u00f1a Vi\u00d6t Nam l\u00aan con s\u00e8 22 lo\u00b5i v\u00b5 m\u00e9t th\u00f8.<\/p>\n T\u00f5 kho\u00b8:<\/b> Lo\u00b5i m\u00edi, Gi\u00e6i l\u00b8 b\u00b9c, Ho\u00b5ng lan l\u00b8 xoan, Chi gi\u00e6i, Vi\u00d6t Nam<\/p>\n <\/p>\n 6. THE RESULTS OF ASSISTED NATURAL REGENERATION AND FOREST REHABILITATION WITH SCHIMA WALLICHII<\/i> CHOISY REGENERATED IN CHIENG BOM COMMUNITY, THUAN CHAU DISTRICT, SON LA PROVINCE<\/b><\/b><\/p>\n Vo Dai Hai<\/b><\/p>\n Forest Science Institute of Vietnam<\/p>\n <\/p>\n SUMMARY<\/b><\/p>\n Schima wallichii <\/i>Choisy is a large-sized, multipurpose tree species with wide distribution and rather good natural regeneration both by coppycing and seeding. The research was conducted in natural forest with Schima wallichii <\/i>regenerated in Chieng Bom commune, Thuan Chau district, Son La province. Research results show that after 6 and 11 years forest rehabilitation through protection and maintenance forest status has been converted from status Ic to status IIa, number of tree species increased from 9 – 10 to 10 – 14 species, forest cover increased 0.62 – 0.72, density increased 6.44% after 11 years rehabilitation. For status IIb, after 12 years rehabilitation the number of tree species also increased from 11 – 13 to 15 – 16 species, of which Schima wallichii <\/i>still plays an important role in species composition of the forest, density of Schima wallichii <\/i>tends to decrease on an average about 19.6% (133 tree\/ha), forest cover increases from 0.57 to 0.8. Depending upon specific conditions of natural forest status, assisted natural regeneration and forest rehabilitation through protection and maintenance can be done by silvicultural techniques such as slash bushes and lianas as well as uneconomical species,\u2026 creating favourable condition for target species to develop. Besides, forest protection contraction sould be implemented well.<\/p>\n Keywords: <\/b>Schima wallichii<\/i> Choisy, Forest rehabilitation, Assisted natural regeneration, Chieng Bom – Thuan Chau – Son La, Ic, IIb status.<\/p>\n \u00a0<\/b><\/p>\n K\u1ebft qu\u1ea3 khoanh nu\u00f4i x\u00fac ti\u1ebfn t\u00e1i sinh <\/b>r\u1eebng t\u1ef1 nhi\u00ean c\u00f3 V\u1ed1i thu\u1ed1c (Schima wallichii<\/i> Choisy) t\u00e1i sinh t\u1ea1i x\u00e3 Chi\u1ec1ng B\u00f4m, huy\u1ec7n Thu\u1eadn Ch\u00e2u, t\u1ec9nh S\u01a1n La<\/b><\/p>\n V\u00f5 \u0110\u1ea1i H\u1ea3i<\/b><\/p>\n Vi\u1ec7n Khoa h\u1ecdc L\u00e2m Nghi\u1ec7p Vi\u1ec7t Nam<\/i><\/p>\n T\u00d3M T\u1eaeT<\/b><\/p>\n V\u1ed1i thu\u1ed1c (Schima wallichii <\/i>Choisy) l\u00e0 lo\u00e0i c\u00e2y g\u1ed7 l\u1edbn, ph\u00e2n b\u1ed1 r\u1ed9ng v\u00e0 \u0111a t\u00e1c d\u1ee5ng, \u0111\u1eb7c bi\u1ec7t V\u1ed1i thu\u1ed1c c\u00f3 kh\u1ea3 n\u0103ng t\u00e1i sinh t\u1ef1 nhi\u00ean ch\u1ed3i v\u00e0 h\u1ea1t r\u1ea5t m\u1ea1nh. Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n t\u1ea1i khu v\u1ef1c r\u1eebng t\u1ef1 nhi\u00ean c\u00f3 V\u1ed1i thu\u1ed1c t\u00e1i sinh tr\u00ean \u0111\u1ecba b\u00e0n x\u00e3 Chi\u1ec1ng B\u00f4m, huy\u1ec7n Thu\u1eadn Ch\u00e2u, t\u1ec9nh S\u01a1n La. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y sau th\u1eddi gian khoanh nu\u00f4i 6 n\u0103m v\u00e0 11 n\u0103m th\u00ec \u0111\u1ec1u c\u00f3 s\u1ef1 chuy\u1ec3n \u0111\u1ed5i tr\u1ea1ng th\u00e1i t\u1eeb Ic l\u00ean tr\u1ea1ng th\u00e1i IIa, s\u1ed1 l\u01b0\u1ee3ng lo\u00e0i xu\u1ea5t hi\u1ec7n c\u0169ng c\u00f3 s\u1ef1 gia t\u0103ng t\u1eeb 9 – 10 lo\u00e0i (tr\u01b0\u1edbc khoanh nu\u00f4i) l\u00ean 10 – 14 lo\u00e0i (sau khoanh nu\u00f4i), \u0111\u1ed9 t\u00e0n che t\u0103ng 0,62 – 0,72, m\u1eadt \u0111\u1ed9 V\u1ed1i thu\u1ed1c t\u00e1i sinh t\u0103ng 6,44% sau 11 n\u0103m khoanh nu\u00f4i,\u2026 \u0110\u1ed1i v\u1edbi tr\u1ea1ng th\u00e1i IIb sau khoanh nu\u00f4i 12 n\u0103m s\u1ed1 l\u01b0\u1ee3ng lo\u00e0i c\u0169ng t\u0103ng t\u1eeb 11 – 13 lo\u00e0i (tr\u01b0\u1edbc khoanh nu\u00f4i) l\u00ean 15 – 16 lo\u00e0i (sau khoanh nu\u00f4i) trong \u0111\u00f3 V\u1ed1i thu\u1ed1c ti\u1ebfp t\u1ee5c gi\u1eef v\u1ecb tr\u00ed quan tr\u1ecdng trong c\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh c\u1ee7a r\u1eebng, m\u1eadt \u0111\u1ed9 V\u1ed1i thu\u1ed1c t\u00e1i sinh c\u00f3 xu h\u01b0\u1edbng gi\u1ea3m trung b\u00ecnh kho\u1ea3ng 19,6% (133 c\u00e2y\/ha), \u0111\u1ed9 t\u00e0n che c\u1ee7a r\u1eebng t\u0103ng t\u1eeb 0,57 l\u00ean 0,8. \u0110\u1ec3 th\u1ef1c hi\u1ec7n khoanh nu\u00f4i x\u00fac ti\u1ebfn t\u00e1i sinh t\u1ef1 nhi\u00ean r\u1eebng c\u00f3 V\u1ed1i thu\u1ed1c t\u00e1i sinh, t\u00f9y v\u00e0o t\u1eebng \u0111i\u1ec1u ki\u1ec7n c\u1ee5 th\u1ec3 c\u1ee7a hi\u1ec7n tr\u1ea1ng r\u1eebng m\u00e0 c\u1ea7n ti\u1ebfn h\u00e0nh c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt l\u00e2m sinh t\u00e1c \u0111\u1ed9ng nh\u01b0 ph\u00e1t lu\u1ed7ng d\u00e2y leo, ch\u1eb7t b\u1edbt c\u00e2y phi m\u1ee5c \u0111\u00edch,\u2026 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 c\u00e2y t\u00e1i sinh m\u1ee5c \u0111\u00edch ph\u00e1t tri\u1ec3n, b\u00ean c\u1ea1nh \u0111\u00f3 c\u1ea7n l\u00e0m t\u1ed1t c\u00f4ng t\u00e1c giao kho\u00e1n b\u1ea3o v\u1ec7 r\u1eebng t\u1ea1i \u0111\u1ecba ph\u01b0\u01a1ng.<\/p>\n T\u1eeb kh\u00f3a: V\u1ed1i thu\u1ed1c, Khoanh nu\u00f4i, X\u00fac ti\u1ebfn t\u00e1i sinh, Chi\u1ec1ng B\u00f4m – Thu\u1eadn Ch\u00e2u – S\u01a1n La, Tr\u1ea1ng th\u00e1i Ic, IIb.<\/p>\n <\/p>\n 7. EVALUATION OF\u00a0 SURVIVAL AND GROWTH RATES OF 3 UPSTREAM PROTECTIVE FOREST MODELS ESTABLISHED BY RENFODA PROJECT IN HOA BINH PROVINCE<\/b><\/p>\n Nguyen Anh Dung<\/b><\/p>\n Forest Ecology and Environment Research Center<\/p>\n Forest Science Institute of Vietnam<\/p>\n SUMMARY<\/b><\/p>\n This research was conducted in 2009 to evaluate survival and growth rates as well as technical measures of 3 upstream protective forest models establishment developed by the Project for Rehabilitation of Natural Forests in Degraded Watershed areas in the North of Viet Nam (RENFODA Project): i) Establishment of upstream protective forests on bare land; ii) Planting native tree species under Acacia mangium canopy and iii) Planting Melaleuca on semi – flooded areas. The research results show that Erythrophloeum fordii and Peltophorum pterocarpum are the best trees species for planting on bare land with Tephrosia candida is nurse species. Erythrophloeum fordii is suitable for planting under Acacia mangium canopy. Melaleuca leucadendra planted with density 7,500 and 15,000 trees\/ha is the suitable species for forest planting on semi – flooded areas.<\/p>\n Keywords<\/b>: Survival rate, Growth, Upstream protective forest, Hoa Binh province<\/p>\n <\/p>\n \u0110\u00c1NH GI\u00c1 T\u1ef6 L\u1ec6 S\u1ed0NG V\u00c0 T\u00ccNH H\u00ccNH SINH TR\u01af\u1edeNG C\u1ee6A M\u1ed8T S\u1ed0 M\u00d4 H\u00ccNH R\u1eeaNG TR\u1ed2NG PH\u00d2NG H\u1ed8 \u0110\u1ea6U NGU\u1ed2N DO D\u1ef0 \u00c1N RENFODA X\u00c2Y D\u1ef0NG T\u1ea0I H\u00d2A B\u00ccNH<\/b><\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/i>Nguy\u1ec5n Anh D\u0169ng<\/b><\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Trung t\u00e2m Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng<\/i><\/p>\n Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam <\/i><\/p>\n T\u00d3M T\u1eaeT<\/b><\/p>\n Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n n\u0103m 2009 nh\u1eb1m \u0111\u00e1nh gi\u00e1 t\u1ef7 l\u1ec7 s\u1ed1ng, t\u00ecnh h\u00ecnh sinh tr\u01b0\u1edfng v\u00e0 bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt x\u00e2y d\u1ef1ng 3 m\u00f4 h\u00ecnh tr\u1ed3ng r\u1eebng ph\u00f2ng h\u1ed9 \u0111\u1ea7u ngu\u1ed3n trong D\u1ef1 \u00e1n ph\u1ee5c h\u1ed3i r\u1eebng t\u1ef1 nhi\u00ean ph\u00f2ng h\u1ed9 \u0111\u1ea7u ngu\u1ed3n b\u1ecb suy tho\u00e1i t\u1ea1i mi\u1ec1n B\u1eafc Vi\u1ec7t Nam (vi\u1ebft t\u1eaft l\u00e0 RENFODA) l\u00e0: i) M\u00f4 h\u00ecnh tr\u1ed3ng r\u1eebng ph\u00f2ng h\u1ed9 tr\u00ean \u0111\u1ea5t tr\u1ed1ng; ii) M\u00f4 h\u00ecnh tr\u1ed3ng c\u00e2y b\u1ea3n \u0111\u1ecba d\u01b0\u1edbi t\u00e1n r\u1eebng Keo tai t\u01b0\u1ee3ng v\u00e0 iii) M\u00f4 h\u00ecnh tr\u1ed3ng Tr\u00e0m tr\u00ean v\u00f9ng b\u00e1n ng\u1eadp. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u00e3 l\u1ef1a ch\u1ecdn \u0111\u01b0\u1ee3c lo\u00e0i c\u00e2y th\u00edch h\u1ee3p nh\u1ea5t cho tr\u1ed3ng r\u1eebng ph\u00f2ng h\u1ed9 tr\u00ean \u0111\u1ea5t tr\u1ed1ng l\u00e0 Lim xanh, Lim x\u1eb9t v\u1edbi ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng xen v\u1edbi c\u00e2y C\u1ed1t kh\u00ed ho\u1eb7c Keo. Lo\u00e0i c\u00e2y th\u00edch h\u1ee3p cho bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt tr\u1ed3ng c\u00e2y b\u1ea3n \u0111\u1ecba d\u01b0\u1edbi t\u00e1n r\u1eebng Keo tai t\u01b0\u1ee3ng l\u00e0 Lim xanh v\u1edbi ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng theo b\u0103ng ho\u1eb7c theo \u0111\u00e1m. Tr\u00e0m \u00fac v\u1edbi m\u1eadt \u0111\u1ed9 tr\u1ed3ng 7.500 c\u00e2y\/ha ho\u1eb7c 15.000 c\u00e2y\/ha l\u00e0 lo\u00e0i th\u00edch h\u1ee3p cho tr\u1ed3ng r\u1eebng tr\u00ean v\u00f9ng b\u00e1n ng\u1eadp.<\/p>\n T\u1eeb kh\u00f3a<\/i><\/b>:<\/b> T\u1ef7 l\u1ec7 s\u1ed1ng, Sinh tr\u01b0\u1edfng, R\u1eebng tr\u1ed3ng ph\u00f2ng h\u1ed9 \u0111\u1ea7u ngu\u1ed3n, T\u1ec9nh H\u00f2a B\u00ecnh.<\/i><\/p>\n <\/p>\n 8. INSECT LIST (COLEOPTERA AND HEMIPTERA) COLLECTED FROM INSECT TRAP PROGRAM IN DAI LAI, VINH PHUC<\/b><\/p>\n \u00a0<\/b><\/p>\n Pham Quang Thu, Dao Ngoc Quang, Vu Van Dinh, Bui Quang Tiep<\/b><\/p>\n Forest Science Institute of Vietnam<\/i><\/p>\n \u00a0<\/i><\/p>\n SUMMARY<\/b><\/p>\n The investigation of insect beetle list in Dai Lai, Vinh Phuc by using trapping method with pheromone and chemical lures showed that specimens focused on 15 species, 9 families (including the 90% of insect species Dryocoetes villosus<\/i>). Number of samples obtained by three different types of prey (APINHI, Pine resin + Alcohol, Alcohol) is a significant difference, of which pheromone lure (APINHI) is most effective, reached 90.5%. This is the basis of scientific investigation in the species list of beetle damaged pine and acacia plantations in particular and plantations general.<\/p>\n <\/p>\n Keywords<\/b>: <\/b>Insect trap, Coleoptera, Hemiptera<\/p>\n <\/p>\n K\u1ebeT QU\u1ea2 \u0110I\u1ec0U TRA TH\u00c0NH PH\u1ea6N LO\u00c0I C\u00d4N TR\u00d9NG B\u1ed8 C\u00c1NH C\u1ee8NG COLEOPTERA V\u00c0 C\u00c1NH N\u1eecA HEMIPTERA T\u1ea0I \u0110\u1ea0I L\u1ea2I, V\u0128NH PH\u00daC \u00a0<\/b><\/p>\n Ph\u1ea1m Quang Thu, \u0110\u00e0o Ng\u1ecdc Quang, V\u0169 V\u0103n \u0110\u1ecbnh v\u00e0 B\u00f9i Quang Ti\u1ebfp<\/b><\/p>\n Ph\u00f2ng Nghi\u00ean c\u1ee9u B\u1ea3o v\u1ec7 Th\u1ef1c v\u1eadt\u00a0 r\u1eebng<\/i><\/p>\n Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/i><\/p>\n \u00a0<\/b><\/p>\n T\u00d3M T\u1eaeT<\/b><\/p>\n Qu\u00e1 tr\u00ecnh \u0111i\u1ec1u tra th\u00e0nh ph\u1ea7n lo\u00e0i c\u00f4n tr\u00f9ng c\u00e1nh c\u1ee9ng v\u00e0 c\u00e1nh n\u1eeda t\u1ea1i \u0110\u1ea1i L\u1ea3i, V\u0129nh Ph\u00fac b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p b\u1eaby s\u1eed d\u1ee5ng m\u1ed3i pheromon v\u00e0 m\u1ed3i h\u00f3a h\u1ecdc cho th\u1ea5y s\u1ed1 m\u1eabu thu \u0111\u01b0\u1ee3c t\u1eadp trung ch\u1ee7 y\u1ebfu v\u00e0o 15 lo\u00e0i thu\u1ed9c 9 h\u1ecd, trong \u0111\u00f3 c\u00f3 \u0111\u1ebfn 90% l\u00e0 m\u1eabu c\u00f4n tr\u00f9ng lo\u00e0i Dryocoetes<\/i> villosus<\/i>. S\u1ed1 l\u01b0\u1ee3ng m\u1eabu thu \u0111\u01b0\u1ee3c b\u1eb1ng 3 lo\u1ea1i m\u1ed3i kh\u00e1c nhau (APINHI, R\u01b0\u1ee3u + nh\u1ef1a th\u00f4ng, R\u01b0\u1ee3u) c\u00f3 c\u00f3 s\u1ef1 kh\u00e1c nhau r\u00f5 r\u1ec7t, trong \u0111\u00f3 lo\u1ea1i m\u1ed3i nh\u1eed pheromone (APINHI) c\u00f3 hi\u1ec7u qu\u1ea3 cao nh\u1ea5t, \u0111\u1ea1t 90,5%. \u0110\u00e2y l\u00e0 c\u01a1 s\u1edf khoa h\u1ecdc trong c\u00f4ng t\u00e1c \u0111i\u1ec1u tra th\u00e0nh ph\u1ea7n lo\u00e0i c\u00f4n tr\u00f9ng c\u00e1nh c\u1ee9ng v\u00e0 c\u00e1nh n\u1eeda h\u1ea1i r\u1eebng tr\u1ed3ng th\u00f4ng v\u00e0 keo n\u00f3i ri\u00eang v\u00e0 r\u1eebng tr\u1ed3ng n\u00f3i chung.<\/p>\n T\u1eeb kh\u00f3a: <\/b>B\u1eaby c\u00f4n tr\u00f9ng, B\u1ed9 c\u00e1nh c\u1ee9ng (Coleoptera), B\u1ed9 c\u00e1nh n\u1eeda (Hemiptera)<\/p>\n <\/p>\n 9. RESEACH ON ESTIMATING MOISTURE ABSORPTION AND MOISTURE EMISSION FROM NON-TREATED RHIZOPHORA APICULATA<\/i> BLUME WOOD UNDER THE ENVIROMENT CONDITION OF VIETNAM.<\/b><\/p>\n Nguyen Xuan Hien, Do Vu Thang<\/b><\/p>\n Forest<\/i> Products Prossecing Research Divion<\/i><\/p>\n Forest Science Institute of\u00a0 Vietnam<\/i><\/p>\n SUMMARY<\/b><\/p>\n This study describes a laboratory method for the estimation of moisture absorption and moisture emission from non-treated Rhizophora apiculata<\/i> wood. The wood material was taken from Camau province and was classed into six kinds of specimens, which had different weight, dimensions and moisture content. All the specimens were kept under monitoring in the indoor – environment throughout 12 months to determine equilibrium moisture content (EMC) and to build a moisture absorption & emission chart. The results of this study are the basis to select the end-use moisture content most compatibility with the environment condition of North Vietnam for Rhizophora apiculata <\/i>wood.<\/p>\n Key words: <\/b>Rhizophora apiculata, <\/i>Moisture absorption, Equilibrium moisture content (EMC)<\/b><\/p>\n <\/p>\n NGHI\u00caN C\u1ee8U KH\u1ea2 N\u0102NG H\u00daT,\u00a0 THO\u00c1T \u1ea8M C\u1ee6A G\u1ed6 \u0110\u01af\u1edaC (Rhizophora apiculata <\/i>Blume)<\/i> TRONG M\u00d4I TR\u01af\u1edcNG KH\u00cd H\u1eacU VI\u1ec6T NAM<\/b><\/p>\n \u00a0<\/b><\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/i><\/b>Nguy\u1ec5n Xu\u00e2n Hi\u00ean, \u0110\u1ed7 V\u0169 Th\u1eafng<\/b><\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Ph\u00f2ng Nghi\u00ean c\u1ee9u Ch\u1ebf bi\u1ebfn L\u00e2m s\u1ea3n<\/i><\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/i><\/p>\n \u00a0<\/b><\/p>\n T\u00d3M T\u1eaeT<\/b><\/p>\n Trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng \u0111\u1ed3 m\u1ed9c, m\u1ed9t s\u1ed1 s\u1ea3n ph\u1ea9m g\u1ed7 th\u01b0\u1eddng b\u1ecb cong v\u00eanh bi\u1ebfn d\u1ea1ng do \u0111\u1ed9 \u1ea9m g\u1ed7 sau s\u1ea5y kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi m\u00f4i tr\u01b0\u1eddng s\u1eed d\u1ee5ng.<\/p>\n Nghi\u00ean c\u1ee9u kh\u1ea3 n\u0103ng h\u00fat v\u00e0 tho\u00e1t \u1ea9m c\u1ee7a g\u1ed7 \u0110\u01b0\u1edbc (Rhizophora apiculata <\/i>Blume) trong m\u00f4i tr\u01b0\u1eddng kh\u00ed h\u1eadu \u1edf Vi\u1ec7t Nam v\u1edbi m\u1ee5c \u0111\u00edch t\u00ecm \u0111\u1ed9 \u1ea9m th\u0103ng b\u1eb1ng c\u1ee7a g\u1ed7 (Wtb<\/sub>), l\u00e0m c\u01a1 s\u1edf khoa h\u1ecdc cho vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111\u1ed9 \u1ea9m trong m\u00f4i tr\u01b0\u1eddng s\u1ea5y v\u00e0 l\u1ef1a ch\u1ecdn \u0111\u1ed9 \u1ea9m cu\u1ed1i c\u00f9ng c\u1ee7a g\u1ed7 sau s\u1ea5y khi nghi\u00ean c\u1ee9u v\u1ec1 s\u1ea5y g\u1ed7.<\/p>\n T\u1eeb g\u1ed7 \u0110\u01b0\u1edbc t\u1ea1o ba lo\u1ea1i m\u1eabu c\u00f3 k\u00edch th\u01b0\u1edbc nh\u1ecf, trung b\u00ecnh v\u00e0 l\u1edbn. Chia to\u00e0n b\u1ed9 s\u1ed1 m\u1eabu l\u00e0m hai ph\u1ea7n, m\u1ed9t ph\u1ea7n s\u1ea5y \u0111\u1ebfn \u0111\u1ed9 \u1ea9m kh\u00f4 ki\u1ec7t (0 – 3 %) \u0111\u1ec3 theo d\u00f5i kh\u1ea3 n\u0103ng h\u00fat \u1ea9m, m\u1ed9t lo\u1ea1i m\u1eabu c\u00f2n t\u01b0\u01a1i (W > 30 %) \u0111\u1ec3 theo d\u00f5i kh\u1ea3 n\u0103ng tho\u00e1t \u1ea9m c\u1ee7a g\u1ed7 trong m\u00f4i tr\u01b0\u1eddng.<\/p>\n Sau 12 th\u00e1ng nghi\u00ean c\u1ee9u kh\u1ea3 n\u0103ng h\u00fat v\u00e0 tho\u00e1t \u1ea9m ba lo\u1ea1i m\u1eabu c\u00f3 k\u00edch th\u01b0\u1edbc v\u00e0 \u0111\u1ed9 \u1ea9m ban \u0111\u1ea7u kh\u00e1c nhau \u1edf trong nh\u00e0 khu v\u1ef1c H\u00e0 N\u1ed9i, mi\u1ec1n B\u1eafc Vi\u1ec7t Nam, nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng dao \u0111\u1ed9ng trong kho\u1ea3ng To<\/sup> = 14 – 36o<\/sup>C, \u0111\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a m\u00f4i tr\u01b0\u1eddng dao \u0111\u1ed9ng trong kho\u1ea3ng j = 58 – 90 %. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u x\u00e2y d\u1ef1ng \u0111\u01b0\u1ee3c \u0111\u1ed3 th\u1ecb h\u00fat v\u00e0 tho\u00e1t \u1ea9m c\u1ee7a c\u00e1c m\u1eabu g\u1ed7 \u0110\u01b0\u1edbc v\u00e0 x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 \u1ea9m th\u0103ng b\u1eb1ng c\u1ee7a g\u1ed7 l\u00e0 Wtb \u2248 13.7 %.<\/p>\n T\u1eeb kh\u00f3a:<\/i><\/b> G\u1ed7 \u0110\u01b0\u1edbc, Kh\u1ea3 n\u0103ng h\u00fat v\u00e0 tho\u00e1t \u1ea9m, \u0110\u1ed9 \u1ea9m th\u0103ng b\u1eb1ng <\/i><\/p>\n <\/p>\n 10. RESEARCH ON TREAMENT METHODS BEFORE DRYING RHIZOPHORA APICULATA <\/i>BY CAXE-03 PRESERVATIVE<\/b><\/p>\n \u00a0<\/b><\/p>\n V<\/b>u Dinh Thinh, Nguyen Thi Minh Xuan<\/b><\/p>\n Forest<\/i> Product Processing Division<\/i><\/p>\n Forest Science Institute of Vietnam<\/i><\/p>\n \u00a0<\/b><\/p>\n SUMMARY<\/b><\/p>\n <\/p>\n After exploiting Rhizophora apiculata<\/i>, saw to strip with 20 mm thichkness. It\u2019s soaked with Caxe-03 preservative 8% concentration, 72 hours at normal temperature and pressure. After that, It\u2019s dried to moisture 10-12% at 40 – 600<\/sup>C, in about 360 hours, it can be reduced alot of wood drying defects, reduce 8,78 end checks means 54,87 percents compares to control form.<\/p>\n When using Rhizophora apiculata<\/i>\u00a0 for making floor indicates that: Sticking between Rhizophora apiculata<\/i> surface and PU is good (conformable to CNS 673085) achieved rate A2.<\/p>\n Keywords:<\/b> Rhizophora apiculata<\/i> surface treament, 20 years, Camau<\/p>\n <\/p>\n NGHI\u00caN C\u1ee8U X\u1eec L\u00dd TR\u01af\u1edaC S\u1ea4Y V\u00c1N X\u1eba G\u1ed6 \u0110\u01af\u1edaC (Rhizophora apiculata)<\/i><\/b> B\u1eb0NG DUNG D\u1ecaCH CAXE-03<\/b><\/p>\n V\u0169 \u0110\u00ecnh Th\u1ecbnh, Nguy\u1ec5n Th\u1ecb Minh Xu\u00e2n<\/b><\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Ph\u00f2ng nghi\u00ean c\u1ee9u Ch\u1ebf bi\u1ebfn L\u00e2m s\u1ea3n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/i><\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/i><\/p>\n \u00a0<\/i><\/b><\/p>\n T\u00d3M T\u1eaeT<\/b><\/p>\n G\u1ed7 \u0110\u01b0\u1edbc sau khi ch\u1eb7t h\u1ea1, x\u1ebb ph\u00f4i theo chi\u1ec1u d\u00e0y 20mm, \u0111em t\u1ea9m h\u00f3a ch\u1ea5t Caxe-03 b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p ng\u00e2m th\u01b0\u1eddng \u1edf nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t th\u01b0\u1eddng v\u1edbi n\u1ed3ng \u0111\u1ed9 8% v\u00e0 th\u1eddi gian ng\u00e2m 72 gi\u1edd r\u1ed3i \u0111em s\u1ea5y v\u1edbi nhi\u1ec7t \u0111\u1ed9 (40 – 60)0<\/sup>C th\u1eddi gian \u0111\u1ec3 \u0111\u1ea1t \u0111\u1ed9 \u1ea9m cu\u1ed1i t\u1eeb (10 – 12)% l\u00e0 360 gi\u1edd, s\u1ebd gi\u1ea3m \u0111\u01b0\u1ee3c r\u1ea5t nhi\u1ec1u khuy\u1ebft t\u1eadt c\u1ee7a g\u1ed7 sau khi s\u1ea5y, gi\u1ea3m 8,78 v\u1ebft n\u1ee9t t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi 54,87% so v\u1edbi m\u1eabu \u0111\u1ed1i ch\u1ee9ng.<\/p>\n Khi s\u1eed d\u1ee5ng g\u1ed7 \u0110\u01b0\u1edbc l\u00e0m v\u00e1n s\u00e0n cho th\u1ea5y: \u0110\u1ed9 b\u00e1m d\u00ednh b\u1ec1 m\u1eb7t c\u1ee7a g\u1ed7 \u0110\u01b0\u1edbc v\u1edbi s\u01a1n PU t\u01b0\u01a1ng \u0111\u1ed1i t\u1ed1t (theo ti\u00eau chu\u1ea9n Ti\u1ec7p Kh\u1eafc CNS 673085 ) \u0111\u1ea1t c\u1ea5p \u0111\u1ed9 A2.<\/p>\n T\u1eeb kh\u00f3a:<\/b> X\u1eed l\u00fd b\u1ec1 m\u1eb7t g\u1ed7 \u0110\u01b0\u1edbc, 20 n\u0103m tu\u1ed5i, C\u00e0 Mau<\/p>\n <\/p>\n 11. STUDY ON ADHESIVE\u00a0 BETWEEN ANACARDIUM OCCIDENTALE <\/i>AND MPU GLUE<\/b><\/p>\n Pham Ngoc Nam<\/b><\/p>\n Nong Lam University Ho Chi Minh City <\/b><\/p>\n SUMMARY<\/b><\/p>\n Cashew (Anacardium occidentale)<\/i> is a plant grown mainly for seeds and planted extensively around, the tree has many branches branches. When to plant low-yield seeds, the garden is cut of the timber as raw material for wood processing industry. The strength of wood is low, so that only the appropriate timber as raw materials for block board production. Research showed\u00a0 that in the block board production from this wood with MPU glue, when the pressure is 8.03KG\/cm2<\/sup> and\u00a0 pressing time is 43.62 minutes, the biggest adhesive is 80.6KG\/cm2<\/sup>.<\/p>\n <\/p>\n Keywords: <\/b>Cashew, Block board, MPU glue.<\/p>\n <\/p>\n Nghi\u00aan c\u00f8u kh\u00b6 n\u00a8ng b\u00b8m d\u00ddnh c\u00f1a g\u00e7 <\/b>\u0110<\/b>i<\/b>\u1ec1u v\u00edi keo MPU trong s\u00b6n xu\u00cat v\u00b8n gh\u00d0p thanh\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/p>\n Ph\u00b9m Ng\u00e4c Nam<\/b><\/p>\n \u00a7\u00b9i h\u00e4c N\u00abng L\u00a9m Tp. H\u00e5 Ch\u00dd Minh <\/i><\/i><\/p>\n T\u00e3m T\u00bet<\/b><\/p>\n C\u00a9y \u00a7i\u00d2u (Anacardium occidentale) <\/i>l\u00b5 c\u00a9y \u00ae\u00ad\u00eec tr\u00e5ng \u00ae\u00d3 l\u00cay h\u00b9t l\u00b5 ch\u00f1 y\u00d5u v\u00b5 tr\u00e5ng r\u00e9ng r\u00b7i kh\u00bep n\u00aci, c\u00a9y c\u00e3 nhi\u00d2u c\u00b5nh nh\u00b8nh. Khi c\u00a9y cho n\u00a8ng su\u00cat h\u00b9t th\u00cap, v\u00ad\u00ean \u0110i\u1ec1u \u00ae\u00ad\u00eec thanh l\u00fd \u00ae\u00d3 l\u00cay g\u00e7 l\u00b5m nguy\u00aan li\u00d6u cho c\u00abng nghi\u00d6p ch\u00d5 bi\u00d5n g\u00e7. G\u00e7 \u0110i\u00d2u c\u00e3 c\u00ad\u00eang \u00ae\u00e9 c\u00ac h\u00e4c th\u00cap, v\u00d7 v\u00cby ch\u00d8 th\u00ddch h\u00eep l\u00b5m nguy\u00aan li\u00d6u s\u00b6n xu\u00cat v\u00b8n gh\u00d0p thanh. K\u00d5t qu\u00b6 nghi\u00aan c\u00f8u cho th\u00cay trong s\u00b6n xu\u00cat v\u00b8n gh\u00d0p thanh t\u00f5 g\u00e7 \u0110i\u1ec1u v\u00edi keo MPU,\u00a0 khi \u00b8p su\u00cat \u00d0p 8,03KG\/cm2<\/sup> v\u00b5 th\u00eai gian \u00d0p 43,62 ph\u00f3t, \u00ae\u00e9 b\u00d2n b\u00b8m d\u00ddnh l\u00edn nh\u00cat l\u00b5 80,6KG\/cm2<\/sup>.<\/p>\n T\u00f5 kh\u00e3a: <\/b>C\u00a9y \u00a7i\u00d2u, V\u00b8n gh\u00d0p thanh, Keo MPU.<\/p>\n <\/p>\n 12. RESEARCH ON STRUCTURE OF EVERGREEN BROADLEAVED NATURAL FOREST (IIIA) PROMOTED SOLUTION TO SUSTAINALBE FOREST BUSINESS IN KON RAY, KON TUM.<\/b><\/p>\n \u00a0<\/b><\/p>\n Do Thi Ha, Bui Thanh Hang<\/b><\/p>\n Forest Science Institute of Vietnam<\/i><\/i><\/p>\n SUMMARY<\/b><\/p>\n Secondary forest businesses have to ensure the short- and long-term economy based on buiding the appropriate forest structure compared with the current structure. The IIIa forest statuses were carried out on 20 plots (0,5ha). Buiding the IIIa forest oriented closely the best forest on that area with the equation form: N = 78.82* e-0,06*D1.3<\/sup><\/p>\n Silvicultural techonoly measurement applying in the next time: IIIa3 forest status: Exploitation to build the IIIa forest oriented: logging intensity in 15%, logging volume in 37,5m3<\/sup>, busuness rotation in 10 years; IIIa2 forest status: Forest maintance to build the IIIa forest oriented in 18 years<\/p>\n Key words:<\/b> Sustainable forest, Oriental forest, IIIa forest status.<\/p>\n \u00a0<\/b><\/p>\n NGHI\u00caN C\u1ee8U C\u1ea4U TR\u00daC R\u1eeaNG T\u1ef0 NHI\u00caN L\u00c1 R\u1ed8NG TH\u01af\u1edcNG XANH TR\u1ea0NG TH\u00c1I R\u1eeaNG IIIA, \u0110\u1ec0 XU\u1ea4T GI\u1ea2I PH\u00c1P KINH DOANH R\u1eeaNG B\u1ec0N V\u1eeeNG T\u1ea0I KON R\u1eaaY, KON TUM<\/b><\/p>\n \u0110\u1ed7 Th\u1ecb H\u00e0, B\u00f9i Thanh H\u1eb1ng<\/b><\/p>\n Ph\u00f2ng Nghi\u00ean c\u1ee9u K\u1ef9 thu\u1eadt L\u00e2m sinh<\/i><\/p>\n Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/i><\/p>\n T\u00d3M T\u1eaeT<\/b><\/p>\n Kinh doanh r\u1eebng th\u1ee9 sinh \u0111\u1ea3m b\u1ea3o y\u00eau c\u1ea7u v\u1ec1 kinh t\u1ebf tr\u01b0\u1edbc m\u1eaft v\u00e0 l\u00e2u d\u00e0i d\u1ef1a tr\u00ean c\u01a1 s\u1edf t\u1ea1o l\u1eadp c\u1ea5u tr\u00fac r\u1eebng ph\u00f9 h\u1ee3p v\u1edbi c\u1ea5u tr\u00fac hi\u1ec7n t\u1ea1i c\u1ee7a l\u00e2m ph\u1ea7n. Nghi\u00ean c\u1ee9u c\u1ea5u tr\u00fac r\u1eebng IIIa b\u1eb1ng s\u1ed1 li\u1ec7u 20 \u00f4 ti\u00eau chu\u1ea9n 0,5ha tr\u00ean \u0111\u1ecba b\u00e0n. X\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh r\u1eebng IIIa3 \u0111\u1ecbnh h\u01b0\u1edbng c\u1ea7n t\u1ea1o l\u1eadp r\u1eebng g\u1ea7n v\u1edbi r\u1eebng t\u1ed1t nh\u1ea5t hi\u1ec7n c\u00f3 tr\u00ean khu v\u1ef1c v\u1edbi d\u1ea1ng ph\u01b0\u01a1ng tr\u00ecnh: N = 78.82* e-0,06*D1.3<\/sup><\/p>\n Bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt \u00e1p d\u1ee5ng trong th\u1eddi gian t\u1edbi: R\u1eebng IIIa3: \u0111\u01b0a v\u00e0o khai th\u00e1c thi\u1ebft l\u1eadp r\u1eebng IIIa3 \u0111\u1ecbnh h\u01b0\u1edbng v\u1edbi: c\u01b0\u1eddng \u0111\u1ed9 khai th\u00e1c 15%, tr\u1eef l\u01b0\u1ee3ng khai th\u00e1c 37,5m3<\/sup>, lu\u00e2n k\u1ef3 kinh doanh 10 n\u0103m; R\u1eebng IIIa2: Th\u1ef1c hi\u1ec7n nu\u00f4i d\u01b0\u1ee1ng t\u1ea1o l\u1eadp r\u1eebng IIIa3 \u0111\u1ecbnh h\u01b0\u1edbng v\u1edbi th\u1eddi gian 18 n\u0103m.<\/p>\n T\u1eeb kh\u00f3a<\/b>: R\u1eebng b\u1ec1n v\u1eefng, R\u1eebng \u0111\u1ecbnh h\u01b0\u1edbng, R\u1eebng IIIa<\/p>\n <\/p>\n 13. RESEARCH ON UTILIZING CASHEW NUT COVER AND EUCALLYPTUS UROPHYLLA<\/i> CHIP FOR COMMON PARTICLE BOARD PRODUCING<\/b><\/p>\n Bui Van Ai, Pham Thi Thanh Mien<\/b><\/p>\n Forest<\/i> Product Preservation Division<\/i><\/p>\n Forest Science Institute of Vietnam<\/i><\/p>\n <\/p>\n Oil taken after pressed cashew nut cover is a waste in cashew nut processing industry in our country. Forest Science Institute of Viet Nam (FSIV) has researched the rate of using cashew nut cover and E. urophylla<\/i> wooden chip to make particle board. This research determined the technique parameters of pressing process to make three layers particle board with presure 2,1 Mpa,\u00a0 temperature 1800<\/sup>C and time 7 minutus. Mainly mechanical properties of the product that meet standard of popular particleboard used in dry condition.<\/p>\n <\/p>\n Keywords<\/b>: Particle board, Cashew nut cover chip, Cashew nut cover. <\/i><\/p>\n <\/p>\n Nghi\u00ean c\u1ee9u s\u1eed d\u1ee5ng d\u0103m v\u1ecf h\u1ea1t \u0110i\u1ec1u k\u1ebft h\u1ee3p v\u1edbi d\u0103m g\u1ed7 B\u1ea1ch \u0111\u00e0n Eucalyptus urophylla<\/i>\u00a0 \u0111\u1ec3 s\u1ea3n xu\u1ea5t v\u00e1n d\u0103m th\u00f4ng d\u1ee5ng <\/b><\/p>\n B\u00f9i V\u0103n \u00c1i, Nguy\u1ec5n Xu\u00e2n Quy\u1ec1n, Ph\u1ea1m Th\u1ecb Thanh Mi\u1ec1n<\/b><\/p>\n T\u00f3m t\u1eaft:<\/b> V\u1ecf h\u1ea1t \u0111i\u1ec1u sau \u00e9p t\u1eadn thu d\u1ea7u l\u00e0 ngu\u1ed3n ph\u1ebf li\u1ec7u c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn trong c\u00f4ng nghi\u1ec7p ch\u1ebf bi\u1ebfn h\u1ea1t \u0111i\u1ec1u c\u1ee7a n\u01b0\u1edbc ta. Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam \u0111\u00e3 nghi\u00ean c\u1ee9u x\u00e1c \u0111\u1ecbnh t\u1ef7 l\u1ec7 ph\u1ed1i tr\u1ed9n d\u0103m v\u1ecf h\u1ea1t \u0111i\u1ec1u v\u00e0 d\u0103m g\u1ed7 B\u1ea1ch \u0111\u00e0n Uro l\u00e0m d\u0103m l\u1edbp l\u00f5i \u0111\u1ec3 t\u1ea1o v\u00e1n d\u0103m. V\u00e1n d\u0103m k\u1ebft h\u1ee3p \u0111\u01b0\u1ee3c \u00e9p v\u1edbi c\u00e1c th\u00f4ng s\u1ed1 c\u00f4ng ngh\u1ec7 g\u1ed3m: \u00e1p su\u1ea5t \u00e9p 2,1Mpa, nhi\u1ec7t \u0111\u1ed9 \u00e9p 1800<\/sup>C, th\u1eddi gian \u00e9p 7 ph\u00fat. V\u00e1n th\u00ed nghi\u1ec7m c\u00f3 t\u00ednh ch\u1ea5t c\u01a1 v\u1eadt l\u00fd \u0111\u00e1p \u1ee9ng ti\u00eau chu\u1ea9n c\u1ee7a v\u00e1n d\u0103m th\u00f4ng d\u1ee5ng s\u1eed d\u1ee5ng trong \u0111i\u1ec1u ki\u1ec7n kh\u00f4.<\/p>\n T\u1eeb kh\u00f3a:<\/b> V\u00e1n d\u0103m, d\u0103m v\u1ecf h\u1ea1t \u0111i\u1ec1u, v\u1ecf h\u1ea1t \u0111i\u1ec1u.<\/p>\n","protected":false},"excerpt":{"rendered":" 1. RESULTS OF CAMMELIA SASANQUA SELECTION PLUS TREE AND CLONAL TEST BY THE METHOD OF SHIFTED-CROWN GRAFTING IN NGHIA DAN \u2013 NGHE AN Hoang Van Thang Silviculture Techniques Research Division Forest Science Institute of Vietnam \u00a0 SUMMARY \u00a0 After 3 years of monitoring and selecting, five plus trees were selected at Nghia Loc Commune – […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[26],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/1036"}],"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\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/comments?post=1036"}],"version-history":[{"count":1,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/1036\/revisions"}],"predecessor-version":[{"id":1037,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/1036\/revisions\/1037"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/media?parent=1036"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/categories?post=1036"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/tags?post=1036"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nB\u1eb0NG PH\u01af\u01a0NG PH\u00c1P B\u1eaaY<\/b><\/p>\n