{"id":14461,"date":"2015-03-27T15:58:12","date_gmt":"2015-03-27T08:58:12","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/?p=14461"},"modified":"2019-09-24T14:58:26","modified_gmt":"2019-09-24T07:58:26","slug":"bao-cao-ket-qua-de-tai-nghien-cuu-danh-gia-thuc-trang-va-phat-trien-ben-vung-cay-do-tram-aquilarria-spp","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/bao-cao-ket-qua-de-tai-nghien-cuu-danh-gia-thuc-trang-va-phat-trien-ben-vung-cay-do-tram-aquilarria-spp\/","title":{"rendered":"B\u00e1o c\u00e1o k\u1ebft qu\u1ea3 \u0111\u1ec1 t\u00e0i: Nghi\u00ean c\u1ee9u \u0111\u00e1nh gi\u00e1 th\u1ef1c tr\u1ea1ng v\u00e0 ph\u00e1t tri\u1ec3n b\u1ec1n v\u1eefng c\u00e2y D\u00f3 tr\u1ea7m (Aquilarria spp.)"},"content":{"rendered":"<p style=\"text-align: right;\"><em>\u00a0PGS.TS. Nguy\u1ec5n Huy S\u01a1n<\/em><\/p>\n<p style=\"text-align: right;\">TT Nghi\u00ean c\u1ee9u L\u00e2m s\u1ea3n ngo\u00e0i g\u1ed7<\/p>\n<p><b>1)\u00a0\u00a0\u00a0\u00a0 <\/b><b>\u0110\u1eb7t v\u1ea5n \u0111\u1ec1<\/b><\/p>\n<p>C\u00e1c lo\u00e0i D\u00f3 c\u00f3 kh\u1ea3 n\u0103ng sinh tr\u1ea7m trong th\u00e2n c\u00e2y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 c\u00e2y D\u00f3 tr\u1ea7m (<i>Aquilarria<\/i> spp.) hay c\u00e2y Tr\u1ea7m h\u01b0\u01a1ng, m\u1ed9t s\u1ed1 \u0111\u1ecba ph\u01b0\u01a1ng g\u1ecdi l\u00e0 c\u00e2y T\u00f3c, s\u1ea3n ph\u1ea9m th\u01b0\u01a1ng m\u1ea1i th\u1ecb g\u1ecdi l\u00e0 Agarwood, Agar wood oil ho\u1eb7c Eaglewood. Trong th\u00e2n c\u1ee7a nh\u1eefng c\u00e2y s\u1ed1ng l\u00e2u n\u0103m th\u01b0\u1eddng c\u00f3 tr\u1ea7m h\u01b0\u01a1ng hay k\u1ef3 nam, tr\u1ea7m h\u01b0\u01a1ng l\u00e0 g\u1ed7 c\u1ee7a c\u00e2y d\u00f3 t\u00edch t\u1ee5 nhi\u1ec1u tinh d\u1ea7u, l\u00e0 m\u1ed9t lo\u1ea1i h\u1ee3p ch\u1ea5t h\u00f3a h\u1ecdc t\u1ef1 nhi\u00ean c\u00f3 nhi\u1ec1u c\u00f4ng d\u1ee5ng \u0111\u01b0\u1ee3c con ng\u01b0\u1eddi bi\u1ebft \u0111\u1ebfn v\u00e0 s\u1eed d\u1ee5ng t\u1ef1 th\u1eddi r\u1ea5t xa x\u01b0a. Tr\u1ea7m h\u01b0\u01a1ng v\u00e0 tinh d\u1ea7u tr\u1ea7m l\u00e0 m\u1ed9t lo\u1ea1i l\u00e2m s\u1ea3n ngo\u00e0i g\u1ed7 c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf cao.<\/p>\n<p>Do nhu c\u1ea7u s\u1eed d\u1ee5ng l\u1edbn nh\u01b0ng ch\u00fang l\u1ea1i ch\u1ec9 c\u00f3 ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean v\u00e0 g\u00e2y tr\u1ed3ng \u0111\u01b0\u1ee3c \u1edf m\u1ed9t s\u1ed1 v\u00f9ng sinh th\u00e1i nh\u1ea5t \u0111\u1ecbnh, \u0111\u1eb7c bi\u1ec7t qu\u00e1 tr\u00ecnh h\u00ecnh th\u00e0nh tr\u1ea7m h\u01b0\u01a1ng t\u1ef1 nhi\u00ean trong th\u00e2n c\u00e2y \u0111\u00f2i h\u1ecfi ph\u1ea3i c\u00f3 nh\u1eefng \u0111i\u1ec1u ki\u1ec7n nh\u1ea5t \u0111\u1ecbnh trong kho\u1ea3ng th\u1eddi gian kh\u00e1 d\u00e0i, n\u00ean tr\u1ea7m h\u01b0\u01a1ng c\u00f3 gi\u00e1 tr\u1ecb th\u01b0\u01a1ng m\u1ea1i kh\u00e1 cao. Do gi\u00e1 tr\u1ecb kinh t\u1ebf cao n\u00ean nhi\u1ec1u n\u0103m qua vi\u1ec7c t\u00ecm ki\u1ebfm tr\u1ea7m h\u01b0\u01a1ng \u0111\u1ec3 khai th\u00e1c di\u1ec5n ra tr\u00ean quy m\u00f4 r\u1ed9ng v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 cao trong c\u1ea3 n\u01b0\u1edbc, \u0111\u00e3 c\u00f3 m\u1ed9t th\u1eddi gian d\u00e0i lo\u00e0i c\u00e2y n\u00e0y \u0111\u01b0\u1ee3c xem nh\u01b0 c\u00f3 nguy c\u01a1 b\u1ecb tuy\u1ec7t ch\u1ee7ng v\u00e0 \u0111\u01b0a v\u00e0o s\u00e1ch \u0111\u1ecf. Tuy nhi\u00ean, kho\u1ea3ng 15 n\u0103m tr\u1edf l\u1ea1i \u0111\u00e2y phong tr\u00e0o tr\u1ed3ng c\u00e2y d\u00f3 tr\u1ea7m t\u1ef1 ph\u00e1t trong nh\u00e2n d\u00e2n \u1edf nhi\u1ec1u \u0111\u1ecba ph\u01b0\u01a1ng trong c\u1ea3 n\u01b0\u1edbc ph\u00e1t tri\u1ec3n kh\u00e1 m\u1ea1nh. Vi\u1ec7c nh\u00e2n gi\u1ed1ng v\u00e0 g\u00e2y tr\u1ed3ng d\u00f3 tr\u1ea7m hi\u1ec7n nay kh\u00f4ng ph\u1ea3i v\u1ea5n \u0111\u1ec1 kh\u00f3 kh\u0103n, nh\u01b0ng gi\u1ed1ng n\u00e0o, lo\u00e0i n\u00e0o c\u00f3 kh\u1ea3 n\u0103ng h\u00ecnh th\u00e0nh tr\u1ea7m? th\u1eddi gian t\u00e1c \u0111\u1ed9ng t\u1ea1o tr\u1ea7m, ph\u01b0\u01a1ng ph\u00e1p t\u00e1c \u0111\u1ed9ng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng t\u1ea1o tr\u1ea7m ra sao? ti\u00eau th\u1ee5 s\u1ea3n ph\u1ea9m \u1edf \u0111\u00e2u?&#8230; th\u00ec v\u1eabn c\u00f2n l\u00e0 v\u1ea5n \u0111\u1ec1 c\u1ea7n l\u00e0m s\u00e1ng t\u1ecf. \u0110\u1eb7c bi\u1ec7t vi\u1ec7c t\u1ea1o tr\u1ea7m hi\u1ec7n nay c\u00f2n c\u00f3 r\u1ea5t nhi\u1ec1u th\u00f4ng tin kh\u00e1c nhau v\u1ec1 ph\u01b0\u01a1ng ph\u00e1p v\u00e0 m\u1ee9c \u0111\u1ed9 h\u00ecnh th\u00e0nh tr\u1ea7m c\u0169ng nh\u01b0 ch\u1ea5t l\u01b0\u1ee3ng tr\u1ea7m. Th\u1ecb tr\u01b0\u1eddng ti\u00eau th\u1ee5 s\u1ea3n ph\u1ea9m c\u1ee7a c\u00e2y d\u00f3 tr\u1ea7m (tr\u1ea7m h\u01b0\u01a1ng, tinh d\u1ea7u, c\u00e2y c\u1ea3nh) c\u0169ng c\u00f3 nhi\u1ec1u th\u00f4ng tin tr\u00e1i ng\u01b0\u1ee3c nhau, ch\u01b0a c\u00f3 th\u1ecb tr\u01b0\u1eddng r\u00f5 r\u00e0ng v\u00e0 Nh\u00e0 n\u01b0\u1edbc c\u0169ng ch\u01b0a ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c \u0111\u1ea7u ra c\u1ee7a c\u00e1c m\u1eb7t h\u00e0ng n\u00e0y.<\/p>\n<p>V\u00ec v\u1eady, vi\u1ec7c nghi\u00ean c\u1ee9u \u0111\u00e1nh gi\u00e1 th\u1ef1c tr\u1ea1ng v\u00e0 ph\u00e1t tri\u1ec3n b\u1ec1n v\u1eefng c\u00e2y D\u00f3 tr\u1ea7m \u1edf n\u01b0\u1edbc ta hi\u1ec7n nay l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft, c\u00f3 \u00fd ngh\u0129a c\u1ea3 v\u1ec1 l\u00fd lu\u1eadn v\u00e0 th\u1ef1c ti\u1ec5n s\u1ea3n xu\u1ea5t.<\/p>\n<p><a href=\"http:\/\/vafs.gov.vn\/vn\/2015\/03\/bao-cao-ket-qua-de-tai-nghien-cuu-danh-gia-thuc-trang-va-phat-trien-ben-vung-cay-do-tram-aquilarria-spp\/15-03-27-dobau\/\" rel=\"attachment wp-att-14463\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-14463\" src=\"http:\/\/vafs.gov.vn\/vn\/wp-content\/uploads\/sites\/2\/2015\/03\/15-03-27-dobau.jpg\" alt=\"15-03-27 dobau\" width=\"500\" height=\"375\" \/><\/a><\/p>\n<p><b>2)\u00a0\u00a0\u00a0\u00a0 <\/b><b>N\u1ed9i dung v\u00e0 ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u<\/b><\/p>\n<p><b><i>2.1. C\u00e1c n\u1ed9i dung nghi\u00ean c\u1ee9u ch\u00ednh:<\/i><\/b><\/p>\n<ul>\n<li>\u00d8 \u0110\u00e1nh gi\u00e1 th\u1ef1c tr\u1ea1ng s\u1ea3n xu\u1ea5t (tr\u1ed3ng r\u1eebng) v\u00e0 kh\u1ea3 n\u0103ng t\u1ea1o tr\u1ea7m c\u1ee7a c\u00e2y d\u00f3 tr\u1ea7m hi\u1ec7n nay \u1edf m\u1ed9t s\u1ed1 v\u00f9ng sinh th\u00e1i ch\u1ee7 y\u1ebfu.<\/li>\n<li>\u00d8 Nghi\u00ean c\u1ee9u th\u1eed nghi\u1ec7m m\u1ed9t s\u1ed1 bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt t\u00e1c \u0111\u1ed9ng t\u1ea1o tr\u1ea7m.<\/li>\n<li>\u00d8 Nghi\u00ean c\u1ee9u \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng tinh d\u1ea7u t\u1eeb g\u1ed7 d\u00f3 tr\u1ea7m v\u00e0 th\u1ecb tr\u01b0\u1eddng ti\u00eau th\u1ee5.<\/li>\n<li>\u00d8 Nghi\u00ean c\u1ee9u b\u1ed5 sung 1 s\u1ed1 bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt l\u00e2m sinh \u0111\u1ec3 n\u00e2ng cao hi\u1ec7u qu\u1ea3 r\u1eebng tr\u1ed3ng.<\/li>\n<li>\u00d8 Nghi\u00ean c\u1ee9u s\u1eed d\u1ee5ng t\u1ed5ng h\u1ee3p c\u00e2y d\u00f3 tr\u1ea7m.<\/li>\n<\/ul>\n<p><b><i>2.2. Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u: <\/i><\/b><\/p>\n<ul>\n<li>\u00d8 Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u chung:<\/li>\n<\/ul>\n<p>S\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tra kh\u1ea3o s\u00e1t theo tuy\u1ebfn \u0111i\u1ec3n h\u00ecnh k\u1ebft h\u1ee3p v\u1edbi ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tra ph\u1ecfng v\u1ea5n nhanh c\u00f3 s\u1ef1 tham gia c\u1ee7a ng\u01b0\u1eddi d\u00e2n, \u1ee9ng d\u1ee5ng c\u00e1c ti\u1ebfn b\u1ed9 k\u1ef9 thu\u1eadt \u0111\u1ec3 b\u1ed1 tr\u00ed c\u00e1c th\u00ed nghi\u1ec7m t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng theo ph\u01b0\u01a1ng ph\u00e1p sinh th\u00e1i th\u1ef1c nghi\u1ec7m k\u1ebft h\u1ee3p v\u1edbi ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch trong ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c ch\u1ec9 ti\u00eau c\u1ea7n thi\u1ebft. C\u00e1c th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed ng\u1eabu nhi\u00ean, l\u1eb7p l\u1ea1i 3 l\u1ea7n; dung l\u01b0\u1ee3ng m\u1eabu \u0111o \u0111\u1ebfm sinh tr\u01b0\u1edfng theo m\u1eabu l\u1edbn (n = 32-49).<\/p>\n<ul>\n<li>\u00d8 C\u00e1c ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u c\u1ee5 th\u1ec3:<\/li>\n<\/ul>\n<p>\u0110i\u1ec1u tra v\u00e0 kh\u1ea3o s\u00e1t theo ph\u01b0\u01a1ng ph\u00e1p \u00f4 ti\u00eau chu\u1ea9n; ph\u00e2n lo\u1ea1i th\u1ef1c v\u1eadt theo ph\u01b0\u01a1ng ph\u00e1p chuy\u00ean gia; \u0111i\u1ec1u tra \u0111\u1ea5t v\u00e0 ph\u00e2n t\u00edch c\u00e1c ch\u1ec9 ti\u00eau l\u00fd h\u00f3a t\u00ednh c\u1ee7a \u0111\u1ea5t theo ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tra ph\u1eabu di\u1ec7n \u0111\u1ea5t k\u1ebft h\u1ee3p ph\u00e2n t\u00edch trong ph\u00f2ng th\u00ed nghi\u1ec7m chuy\u00ean nghi\u1ec7p; nghi\u00ean c\u1ee9u th\u1eed nghi\u1ec7m m\u1ed9t s\u1ed1 ch\u1ebf ph\u1ea9m k\u00edch c\u1ea3m t\u1ea1o tr\u1ea7m theo ph\u01b0\u01a1ng ph\u00e1p sinh th\u00e1i th\u1ef1c nghi\u1ec7m; ch\u01b0ng c\u1ea5t tinh d\u1ea7u theo ph\u01b0\u01a1ng ph\u00e1p ch\u01b0ng c\u1ea5t n\u01b0\u1edbc; nghi\u00ean c\u1ee9u \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng tinh d\u1ea7u theo ph\u01b0\u01a1ng ph\u00e1p s\u1eafc k\u00fd kh\u00ed \u2013 kh\u1ed1i ph\u1ed5 (GC-MS); nghi\u00ean c\u1ee9u v\u00e0 thu th\u1eadp th\u00f4ng tin v\u1ec1 th\u1ecb tr\u01b0\u1eddng theo ph\u01b0\u01a1ng ph\u00e1p kh\u1ea3o s\u00e1t v\u00e0 ph\u1ecfng v\u1ea5n k\u1ebft h\u1ee3p v\u1edbi tham kh\u1ea3o tr\u00ean c\u00e1c trang web; nghi\u00ean c\u1ee9u b\u1ed5 sung m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc v\u00e0 bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt l\u00e2m sinh theo ph\u01b0\u01a1ng ph\u00e1p sinh th\u00e1i th\u1ef1c nghi\u1ec7m\u2026<\/p>\n<p><b>3)\u00a0\u00a0\u00a0\u00a0 <\/b><b>K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u v\u00e0 th\u1ea3o lu\u1eadn<\/b><\/p>\n<p><b><i>3.1. \u0110\u00e1nh gi\u00e1 th\u1ef1c tr\u1ea1ng tr\u1ed3ng r\u1eebng v\u00e0 kh\u1ea3 n\u0103ng t\u1ea1o tr\u1ea7m tr\u00ean c\u00e2y d\u00f3 tr\u1ea7m \u1edf m\u1ed9t s\u1ed1 v\u00f9ng sinh th\u00e1i ch\u1ee7 y\u1ebfu.<\/i><\/b><\/p>\n<p>* Th\u1ef1c tr\u1ea1ng tr\u1ed3ng r\u1eebng: V\u00f9ng tr\u1ecdng \u0111i\u1ec3m g\u00e2y tr\u1ed3ng d\u00f3 tr\u1ea7m \u1edf n\u01b0\u1edbc ta \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh l\u00e0 B\u1eafc Trung B\u1ed9, Nam Trung B\u1ed9, T\u00e2y Nguy\u00ean, \u0110\u00f4ng Nam B\u1ed9 v\u00e0 T\u00e2y Nam B\u1ed9. Di\u1ec7n t\u00edch g\u00e2y tr\u1ed3ng d\u00f3 tr\u1ea7m \u1edf n\u01b0\u1edbc ta c\u00f3 kho\u1ea3ng t\u1eeb 11.000 \u2013 12.000ha, ph\u1ea7n l\u1edbn \u0111\u01b0\u1ee3c tr\u1ed3ng ph\u00e2n t\u00e1n ho\u1eb7c h\u1ed7n giao trong c\u00e1c v\u01b0\u1eddn h\u1ed9, v\u01b0\u1eddn r\u1eebng v\u1edbi m\u1eadt \u0111\u1ed9 kho\u1ea3ng 500-700 c\u00e2y\/ha. C\u00e2y con ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c gieo \u01b0\u01a1m t\u1eeb h\u1ea1t. M\u1eadt \u0111\u1ed9 tr\u1ed3ng thu\u1ea7n lo\u00e0i t\u1eeb 1.100-2.500 c\u00e2y\/ha, nh\u01b0ng ph\u1ed5 bi\u1ebfn l\u00e0 1.660 c\u00e2y\/ha. Kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y D\u00f3 b\u1ea7u nhanh nh\u1ea5t \u1edf B\u00ecnh Ph\u01b0\u1edbc, ti\u1ebfp \u0111\u1ebfn Qu\u1ea3ng Nam, An Giang, ch\u1eadm nh\u1ea5t \u1edf H\u00e0 T\u0129nh. Lo\u00e0i c\u00e2y tr\u1ed3ng ch\u1ee7 y\u1ebfu \u1edf c\u00e1c v\u00f9ng sinh th\u00e1i l\u00e0 c\u00e2y D\u00f3 b\u1ea7u (<i>A. crassna<\/i>).<\/p>\n<p>* Th\u1ef1c tr\u1ea1ng v\u1ec1 kh\u1ea3 n\u0103ng t\u1ea1o tr\u1ea7m:<\/p>\n<p>&#8211; Ch\u1ebf ph\u1ea9m k\u00edch c\u1ea3m t\u1ea1o tr\u1ea7m trong s\u1ea3n xu\u1ea5t v\u00e0 nghi\u00ean c\u1ee9u hi\u1ec7n nay c\u00f3 2 nh\u00f3m ch\u00ednh g\u1ed3m: ch\u1ebf ph\u1ea9m h\u00f3a h\u1ecdc v\u00e0 ch\u1ebf ph\u1ea9m sinh h\u1ecdc; d\u00f9 ch\u1ebf ph\u1ea9m n\u00e0o \u0111\u1ec1u ph\u1ea3i t\u00e1c \u0111\u1ed9ng c\u01a1 gi\u1edbi l\u00e0 khoan s\u00e2u v\u00e0o th\u00e2n c\u00e2y t\u1eeb 0,8mm \u2013 1,0cm r\u1ed3i m\u1edbi \u0111\u01b0a ch\u1ebf ph\u1ea9m v\u00e0o l\u1ed7 khoan. N\u1ebfu s\u1eed d\u1ee5ng h\u00f3a ch\u1ea5t qu\u00e1 m\u1ea1nh th\u00ec c\u00e2y t\u00e1c \u0111\u1ed9ng sau 1 n\u0103m \u0111\u1ec1u b\u1ecb r\u1ed7ng ru\u1ed9t, 1 s\u1ed1 b\u1ecb ch\u1ebft, ch\u01b0a c\u00f3 ch\u1ebf ph\u1ea9m n\u00e0o cho k\u1ebft qu\u1ea3 v\u01b0\u1ee3t tr\u1ed9i r\u00f5 r\u00e0ng. S\u1eed d\u1ee5ng ch\u1ebf ph\u1ea9m sinh h\u1ecdc th\u00ec ph\u1ea1m vi bi\u1ebfn \u0111\u1ed5i m\u00e0u s\u1eafc g\u1ed7 tuy h\u1eb9p nh\u01b0ng cho k\u1ebft qu\u1ea3 r\u00f5 h\u01a1n ch\u1ebf ph\u1ea9m h\u00f3a h\u1ecdc.<\/p>\n<p>&#8211; \u0110\u1ec1 t\u00e0i kh\u1ea3o s\u00e1t tr\u00ean 30 m\u1eabu g\u1ed7 d\u00f3 tr\u1ea7m \u0111\u01b0\u1ee3c thu th\u1eadp t\u1eeb c\u00e1c v\u00f9ng sinh th\u00e1i kh\u00e1c nhau v\u1edbi c\u00e1c bi\u1ec7n ph\u00e1p v\u00e0 ch\u1ebf ph\u1ea9m k\u00edch c\u1ea3m kh\u00e1c nhau. B\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p ch\u01b0ng c\u1ea5t n\u01b0\u1edbc \u0111\u00e3 thu \u0111\u01b0\u1ee3c 28 h\u1ed7n h\u1ee3p ch\u1ee9a tinh d\u1ea7u tr\u1ea7m. K\u1ebft qu\u1ea3 cho th\u1ea5y xung quanh v\u1ecb tr\u00ed t\u00e1c \u0111\u1ed9ng \u0111\u00e3 t\u00edch t\u1ee5 h\u1ed7n h\u1ee3p ch\u1ee9a tinh d\u1ea7u cao h\u01a1n n\u01a1i kh\u00f4ng t\u00e1c \u0111\u1ed9ng. Tr\u00ean c\u00f9ng m\u1ed9t c\u00e2y, h\u00e0m l\u01b0\u1ee3ng h\u1ed7n h\u1ee3p ch\u1ee9a tinh d\u1ea7u cao h\u01a1n n\u01a1i g\u1ed7 tr\u1eafng kh\u00e1 r\u00f5, g\u1ed7 \u1edf \u0111o\u1ea1n th\u00e2n g\u1ea7n g\u1ed1c c\u00f3 h\u00e0m l\u01b0\u1ee3ng tinh d\u1ea7u cao h\u01a1n g\u1ed7 \u1edf \u0111o\u1ea1n th\u00e2n tr\u00ean cao v\u00e0 cao h\u01a1n nhi\u1ec1u so v\u1edbi g\u1ed7 c\u1ee7a r\u1ec5 c\u00e2y. H\u00e0m l\u01b0\u1ee3ng h\u1ed7n h\u1ee3p ch\u1ee9a tinh d\u1ea7u sau ch\u01b0ng c\u1ea5t ch\u01b0a ph\u1ea3i l\u00e0 tinh d\u1ea7u, v\u00ec ch\u00fang ch\u1ee9a nhi\u1ec1u acid b\u00e9o n\u00ean th\u01b0\u1eddng c\u00f3 d\u1ea1ng s\u00e1p \u0111\u1eb7c n\u00ean c\u00f3 gi\u00e1 tr\u1ecb th\u1ea5p tr\u00ean th\u1ecb tr\u01b0\u1eddng.<\/p>\n<p>* Ph\u00e2n lo\u1ea1i th\u1ef1c v\u1eadt, x\u00e1c \u0111\u1ecbnh c\u00e1c lo\u00e0i\/gi\u1ed1ng c\u00f3 kh\u1ea3 n\u0103ng sinh tr\u1ea7m:<\/p>\n<p>&#8211; Hi\u1ec7n nay \u1edf n\u01b0\u1edbc ta \u0111\u00e3 t\u00ecm th\u1ea5y 4 lo\u00e0i d\u00f3 c\u00f3 kh\u1ea3 n\u0103ng sinh tr\u1ea7m trong th\u00e2n c\u00e2y, bao g\u1ed3m: D\u00f3 b\u1ea7u (<i>A. crassna<\/i>), D\u00f3 b\u00e0 n\u00e0 (<i>A. banaensis<\/i>), D\u00f3 g\u1ea1ch (<i>A. bailloni<\/i>), v\u00e0 D\u00f3 qu\u1ea3 nh\u0103n (<i>A. rugosa<\/i>). Ngo\u00e0i ra c\u00f2n c\u00f3 th\u00eam 2 lo\u00e0i d\u00f3 kh\u00e1c nh\u01b0ng ch\u01b0a thu \u0111\u01b0\u1ee3c m\u1eabu v\u1eadt. Ph\u1ea7n l\u1edbn di\u1ec7n t\u00edch \u0111\u01b0\u1ee3c tr\u1ed3ng hi\u1ec7n nay l\u00e0 lo\u00e0i D\u00f3 b\u1ea7u v\u00e0 m\u1ed9t s\u1ed1 di\u1ec7n t\u00edch r\u1ea5t nh\u1ecf \u0111\u01b0\u1ee3c tr\u1ed3ng lo\u00e0i D\u00f3 qu\u1ea3 nh\u0103n \u1edf H\u00f2a B\u00ecnh, Kon Tum, B\u1eafc Giang v\u00e0 Qu\u1ea3ng Ninh. Qua ph\u00e2n t\u00edch 2 lo\u00e0i n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng sinh tr\u1ea7m cao h\u01a1n.<\/p>\n<p><b><i>3.2. K\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m m\u1ed9t s\u1ed1 bi\u1ec7n ph\u00e1p t\u00e1c \u0111\u1ed9ng t\u1ea1o tr\u1ea7m:<\/i><\/b><\/p>\n<p>&#8211; \u0110\u1ec1 t\u00e0i nghi\u00ean c\u1ee9u v\u1edbi 12 c\u00f4ng th\u1ee9c t\u00e1c \u0111\u1ed9ng t\u1ea1o tr\u1ea7m tr\u00ean c\u00e2y D\u00f3 b\u1ea7u \u1edf H\u01b0\u01a1ng S\u01a1n \u2013 H\u00e0 T\u0129nh v\u1edbi 3 c\u1ea5p tu\u1ed5i kh\u00e1c nhau (6, 9 v\u00e0 12 tu\u1ed5i). K\u1ebft qu\u1ea3 cho th\u1ea5y h\u00e0m l\u01b0\u1ee3ng h\u1ed7n h\u1ee3p ch\u1ee9a tinh d\u1ea7u tr\u1ea7m c\u1ee7a nh\u1eefng m\u1eabu g\u1ed7 \u0111\u01b0\u1ee3c k\u00edch c\u1ea3m b\u1eb1ng c\u00e1c ch\u1ebf ph\u1ea9m sinh h\u1ecdc nh\u00ecn chung cao h\u01a1n ch\u1ebf ph\u1ea9m h\u00f3a h\u1ecdc v\u00e0 cao h\u01a1n m\u1eabu \u0111\u1ed1i ch\u1ee9ng (kh\u00f4ng t\u00e1c \u0111\u1ed9ng), r\u00f5 nh\u1ea5t \u1edf giai \u0111o\u1ea1n &lt; 12 n\u0103m tu\u1ed5i (trong ph\u1ea1m vi nghi\u00ean c\u1ee9u t\u1eeb 5 \u2013 12 n\u0103m tu\u1ed5i).<\/p>\n<p>&#8211; M\u00f4 t\u1ea3 c\u1ea5u t\u1ea1o th\u00f4 \u0111\u1ea1i v\u00e0 hi\u1ec3n vi g\u1ed7 d\u00f3 tr\u1ea7m: \u0111\u1ec1 t\u00e0i \u0111\u00e3 ch\u1ecdn 5 m\u1eabu g\u1ed7 \u0111i\u1ec3n h\u00ecnh c\u1ee7a 5 c\u00e2y 12 n\u0103m tu\u1ed5i \u0111\u01b0\u1ee3c tr\u1ed3ng t\u1ea1i H\u00e0 T\u0129nh, trong \u0111\u00f3 c\u00f3 3 m\u1eabu g\u1ed7 \u1edf 3 c\u00e2y \u0111\u00e3 t\u00e1c \u0111\u1ed9ng v\u00e0 2 m\u1eabu g\u1ed7 ch\u01b0a t\u00e1c \u0111\u1ed9ng. K\u1ebft qu\u1ea3 cho th\u1ea5y \u1edf g\u1ed7 l\u00e0nh c\u1ee7a c\u00e2y D\u00f3 b\u1ea7u \u0111\u00e3 b\u1ecb t\u00e1c \u0111\u1ed9ng t\u1ea1o tr\u1ea7m 12 th\u00e1ng v\u00e0 g\u1ed7 c\u1ee7a c\u00e2y kh\u00f4ng t\u00e1c \u0111\u1ed9ng \u0111\u1ec1u c\u00f3 c\u1ea5u t\u1ea1o th\u00f4 \u0111\u1ea1i gi\u1ed1ng nhau, nh\u01b0ng c\u00f3 m\u1ed9t s\u1ed1 kh\u00e1c bi\u1ec7t gi\u1eefa g\u1ed7 \u1edf v\u00f9ng b\u1ecb t\u00e1c \u0111\u1ed9ng so v\u1edbi v\u00f9ng g\u1ed7 l\u00e0nh c\u1ee7a c\u00f9ng m\u1ed9t c\u00e2y l\u00e0 m\u00e0u s\u1eafc th\u00ec bi\u1ebfn \u0111\u1ed5i sang m\u00e0u x\u00e1m \u0111en, c\u00f3 \u0111\u01b0\u1eddng ranh gi\u1edbi gi\u1eefa hai v\u00f9ng kh\u00e1 r\u00f5 r\u1ec7t, g\u1ed7 c\u00f3 m\u00f9i th\u01a1m \u0111\u1eb7c tr\u01b0ng v\u00e0 n\u1eb7ng h\u01a1n ph\u1ea7n g\u1ed7 l\u00e0nh n\u00ean c\u00f3 th\u1ec3 t\u1ea1m g\u1ecdi l\u00e0 g\u1ed7 \u0111\u00e3 nhi\u1ec5m tr\u1ea7m. C\u00f2n c\u1ea5u t\u1ea1o hi\u1ec3n vi c\u1ee7a g\u1ed7 b\u1ecb t\u00e1c \u0111\u1ed9ng c\u00f3 nhi\u1ec1u \u0111\u1eb7c \u0111i\u1ec3m kh\u00e1c bi\u1ec7t so v\u1edbi g\u1ed7 l\u00e0nh nh\u01b0 g\u1ed7 b\u1ecb t\u00e1c \u0111\u1ed9ng c\u00f3 m\u00e0u s\u1eafc s\u1eabm h\u01a1n, ph\u1ea7n s\u1eabm m\u00e0u c\u00f3 th\u1ec3 chia l\u00e0m 2 ph\u1ea7n. Ph\u1ea7n ti\u1ebfp gi\u00e1p v\u1edbi g\u1ed7 l\u00e0nh c\u1ee9ng h\u01a1n, c\u00e1c t\u1ebf b\u00e0o v\u00e0 m\u00f4 \u0111\u1ec1u c\u00f3 c\u00e1c ch\u1ea5t ch\u1ee9a m\u00e0u \u0111en v\u00e0 c\u00f3 m\u00f9i th\u01a1m \u0111\u1eb7c tr\u01b0ng. Ph\u1ea7n ph\u00eda trong gi\u00e1p v\u1edbi g\u1ed7 m\u1ee5c c\u1ee7a l\u1ed7 khoan c\u00f3 ch\u1ee9a ch\u1ea5t \u0111\u00e3 gi\u1ea3m \u0111i r\u00f5 r\u1ec7t, ph\u1ea7n l\u1edbn v\u1ebft v\u1ecf v\u00e0 m\u1ed9t ph\u1ea7n tia g\u1ed7 ho\u1eb7c t\u1ebf b\u00e0o trong tia g\u1ed7 c\u00f3 ch\u1ee9a ch\u1ea5t m\u00e0u \u0111en, s\u1ee3i g\u1ed7 kh\u00f4ng c\u00f2n ch\u1ea5t ch\u1ee9a v\u00e0 ch\u1ec9 c\u00f3 s\u1ed1 \u00edt l\u1ed7 m\u1ea1ch g\u1ed7 c\u00f2n ch\u1ea5t ch\u1ee9a.<\/p>\n<p><b><i>3.3. Ch\u1ea5t l\u01b0\u1ee3ng tinh d\u1ea7u tr\u1ea7m v\u00e0 th\u1ecb tr\u01b0\u1eddng ti\u00eau th\u1ee5:<\/i><\/b><\/p>\n<p>&#8211; Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a h\u1ed7n h\u1ee3p ch\u1ee9a tinh d\u1ea7u t\u1eeb c\u00e1c m\u1eabu g\u1ed7 d\u00f3 tr\u1ea7m \u0111\u01b0\u1ee3c t\u00e1c \u0111\u1ed9ng trong s\u1ea3n xu\u1ea5t \u1edf c\u00e1c m\u1ee9c \u0111\u1ed9 kh\u00e1c nhau, b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p s\u1eafc k\u00fd kh\u00ed \u2013 kh\u1ed1i ph\u1ed5 (GC-MS) \u0111\u00e3 ph\u00e2n t\u00edch th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a 10\/28 m\u1eabu h\u1ed7n h\u1ee3p ch\u1ee9a tinh d\u1ea7u \u0111\u00e3 thu \u0111\u01b0\u1ee3c, k\u1ebft qu\u1ea3 cho th\u1ea5y th\u00e0nh ph\u1ea7n h\u1ed7n h\u1ee3p ch\u1ee9a tinh d\u1ea7u c\u00f3 th\u1ec3 chia l\u00e0m 3 nh\u00f3m ch\u00ednh: nh\u00f3m Sesquiterpene; nh\u00f3m c\u00e1c acid b\u00e9o v\u00e0 d\u1eabn xu\u1ea5t c\u1ee7a ch\u00fang; nh\u00f3m c\u00e1c ch\u1ea5t kh\u00e1c. Ch\u1ea5t l\u01b0\u1ee3ng tinh d\u1ea7u ph\u1ee5 thu\u1ed9c ch\u1ee7 y\u1ebfu v\u00e0o nh\u00f3m Sesquiterpene, <span style=\"text-decoration: underline;\">s\u1ed1 l\u01b0\u1ee3ng<\/span> h\u1ee3p ch\u1ea5t Sesquiterpene trong tinh d\u1ea7u ph\u1ee5 thu\u1ed9c v\u00e0o tu\u1ed5i c\u00e2y v\u00e0 bi\u1ec7n ph\u00e1p t\u00e1c \u0111\u1ed9ng kh\u00e1 r\u00f5, nh\u01b0ng <span style=\"text-decoration: underline;\">h\u00e0m l\u01b0\u1ee3ng<\/span> c\u00e1c h\u1ee3p ch\u1ea5t Sesquiterpene ph\u1ee5 thu\u1ed9c v\u00e0o tu\u1ed5i c\u00e2y ch\u01b0a r\u00f5 m\u00e0 ch\u1ee7 y\u1ebfu ph\u1ee5 thu\u1ed9c v\u00e0o bi\u1ec7n ph\u00e1p v\u00e0 ch\u1ebf ph\u1ea9m t\u00e1c \u0111\u1ed9ng (ph\u1ea1m vi c\u00e2y \u2264 15 tu\u1ed5i).<\/p>\n<p>&#8211; Nghi\u00ean c\u1ee9u h\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a h\u1ed7n h\u1ee3p ch\u1ee9a tinh d\u1ea7u t\u1eeb g\u1ed7 tr\u00ean c\u00e1c c\u00e2y D\u00f3 b\u1ea7u \u1edf 3 \u0111\u1ed9 tu\u1ed5i kh\u00e1c nhau (6, 9 v\u00e0 12 tu\u1ed5i) t\u1ea1i H\u00e0 T\u0129nh. K\u1ebft qu\u1ea3 cho th\u1ea5y t\u00e1c \u0111\u1ed9ng t\u1ea1o tr\u1ea7m \u1edf giai \u0111o\u1ea1n 11 n\u0103m tu\u1ed5i c\u00f3 k\u1ebft qu\u1ea3 r\u00f5 r\u00e0ng h\u01a1n giai \u0111o\u1ea1n 5 v\u00e0 8 n\u0103m tu\u1ed5i, t\u00e1c \u0111\u1ed9ng t\u1ea1o tr\u1ea7m b\u1eb1ng ch\u1ebf ph\u1ea9m k\u1ec3 c\u1ea3 h\u00f3a h\u1ecdc v\u00e0 sinh h\u1ecdc \u0111\u1ec1u c\u00f3 xu h\u01b0\u1edbng l\u00e0m cho h\u00e0m l\u01b0\u1ee3ng tinh d\u1ea7u cao h\u01a1n kh\u00f4ng t\u00e1c \u0111\u1ed9ng, ch\u1ebf ph\u1ea9m sinh h\u1ecdc c\u1ee7a S\u1edf KHCN B\u00ecnh Ph\u01b0\u1edbc k\u1ebft h\u1ee3p v\u1edbi ph\u00f2ng B\u1ea3o v\u1ec7 th\u1ef1c v\u1eadt r\u1eebng (Vi\u1ec7n KHLN Vi\u1ec7t Nam) cho h\u00e0m l\u01b0\u1ee3ng Sesquiterpene cao nh\u1ea5t v\u00e0 h\u00e0m l\u01b0\u1ee3ng acid b\u00e9o th\u1ea5p nh\u1ea5t. Nh\u00f3m c\u00e1c h\u1ee3p ch\u1ea5t Sesquiterpene trong tinh d\u1ea7u ch\u1ea5t l\u01b0\u1ee3ng cao \u1edf n\u01b0\u1edbc ngo\u00e0i c\u0169ng c\u00f3 m\u1eb7t trong th\u00e0nh ph\u1ea5n tinh d\u1ea7u c\u1ee7a c\u00e2y D\u00f3 b\u1ea7u tr\u1ed3ng \u1edf n\u01b0\u1edbc ta.<\/p>\n<p>&#8211; V\u1ec1 th\u1ecb tr\u01b0\u1eddng c\u00e1c s\u1ea3n ph\u1ea9m t\u1eeb c\u00e2y d\u00f3 tr\u1ea7m: K\u1ebft qu\u1ea3 \u0111i\u1ec1u tra v\u00e0 tham kh\u1ea3o t\u00e0i li\u1ec7u cho th\u1ea5y th\u1ecb tr\u01b0\u1eddng n\u01b0\u1edbc ngo\u00e0i t\u1eeb tinh d\u1ea7u \u0111\u1ebfn n\u1ebfn, nhang v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m th\u00f4 kh\u00e1c \u0111\u1ec1u kh\u00e1 r\u1ed9ng l\u1edbn, nh\u01b0ng ng\u00e0nh th\u01b0\u01a1ng m\u1ea1i n\u01b0\u1edbc ta ch\u01b0a khai th\u00e1c \u0111\u01b0\u1ee3c h\u1ebft ti\u1ec1m n\u0103ng th\u1ecb tr\u01b0\u1eddng c\u1ee7a c\u00e1c m\u1eb7t h\u00e0ng n\u00e0y, nh\u1ea5t l\u00e0 c\u00e1c doanh nghi\u1ec7p kinh doanh c\u00e1c m\u1eb7t h\u00e0ng n\u00e0y c\u00f2n nhi\u1ec1u h\u1ea1n ch\u1ebf \u0111\u1ec3 ti\u1ebfp c\u1eadn v\u1edbi th\u1ecb tr\u01b0\u1eddng n\u01b0\u1edbc ngo\u00e0i. Th\u1ecb tr\u01b0\u1eddng trong n\u01b0\u1edbc c\u00f2n ch\u01b0a r\u00f5 r\u00e0ng, v\u1eabn l\u00e0 th\u1ecb tr\u01b0\u1eddng \u201cng\u1ea7m\u201d. Tuy nhi\u00ean, c\u00e1c th\u00f4ng tin thu th\u1eadp \u0111\u01b0\u1ee3c \u0111\u1ec1u l\u00e0 c\u00e1c th\u00f4ng tin th\u1ee9 c\u1ea5p \u0111\u00e3 \u0111\u01b0\u1ee3c x\u1eed l\u00fd v\u00e0 \u0111\u01b0\u1ee3c d\u1eabn t\u1eeb c\u00e1c trang web tr\u00ean m\u1ea1ng n\u00ean \u0111\u1ed9 tin c\u1eady kh\u00f4ng cao.<\/p>\n<p><b><i>3.4. Nghi\u00ean c\u1ee9u b\u1ed5 sung m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m sinh th\u00e1i v\u00e0 bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt l\u00e2m sinh:<\/i><\/b><\/p>\n<p>&#8211; K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u v\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m sinh th\u00e1i v\u00e0 \u0111i\u1ec1u ki\u1ec7n g\u00e2y tr\u1ed3ng d\u00f3 tr\u1ea7m:<\/p>\n<p>* \u0110\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc qu\u1ea7n th\u1ec3: \u0111\u1ec1 t\u00e0i ti\u1ebfn h\u00e0nh \u0111i\u1ec1u tra v\u00f9ng ph\u00e2n b\u1ed1 v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m qu\u1ea7n th\u1ec3 t\u1ef1 nhi\u00ean c\u1ee7a lo\u00e0i d\u00f3 tr\u1ea7m. K\u1ebft qu\u1ea3 \u0111i\u1ec1u tra cho th\u1ea5y v\u00f9ng ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean c\u1ee7a c\u00e2y d\u00f3 tr\u1ea7m kh\u00e1 r\u1ed9ng t\u1eeb v\u00f9ng T\u00e2y B\u1eafc, \u0110\u00f4ng B\u1eafc, B\u1eafc Trung B\u1ed9, Nam Trung B\u1ed9, T\u00e2y Nguy\u00ean \u0111\u1ebfn \u0110\u00f4ng Nam B\u1ed9 v\u00e0 T\u00e2y Nam B\u1ed9. Th\u00f4ng qua t\u1ed5 th\u00e0nh c\u00e1c lo\u00e0i c\u00e2y \u1edf t\u1ea7ng cao c\u0169ng nh\u01b0 t\u1ea7ng d\u01b0\u1edbi t\u00e1n r\u1eebng cho th\u1ea5y c\u00e2y d\u00f3 tr\u1ea7m c\u00f3 bi\u00ean \u0111\u1ed9 sinh th\u00e1i kh\u00e1 r\u1ed9ng, ch\u00fang c\u00f3 th\u1ec3 s\u1ed1ng \u0111\u01b0\u1ee3c t\u1eeb n\u01a1i \u0111\u1ea5t kh\u00f4 c\u1eb1n t\u1ea7ng m\u1ecfng cho \u0111\u1ebfn \u0111\u1ea5t s\u00e2u \u1ea9m th\u01b0\u1eddng xuy\u00ean.<\/p>\n<p>* \u0110\u1eb7c \u0111i\u1ec3m sinh th\u00e1i: ti\u1ebfn h\u00e0nh \u0111i\u1ec1u tra \u0111\u1eb7c \u0111i\u1ec3m kh\u00ed h\u1eadu, \u0111\u1ea5t \u0111ai n\u01a1i c\u00f3 qu\u1ea7n th\u1ec3 d\u00f3 tr\u1ea7m ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean t\u1eeb B\u1eafc v\u00e0o Nam (g\u1ed3m 13 \u0111\u1ecba \u0111i\u1ec3m). K\u1ebft qu\u1ea3 \u0111i\u1ec1u tra v\u00e0 ph\u00e2n t\u00edch cho th\u1ea5y c\u00f3 th\u1ec3 tr\u1ed3ng c\u00e2y d\u00f3 tr\u1ea7m \u0111\u01b0\u1ee3c \u1edf c\u00e1c v\u00f9ng n\u00e0y tr\u00ean c\u00e1c lo\u1ea1i \u0111\u1ea5t ph\u00e1t tri\u1ec3n tr\u00ean c\u00e1c lo\u1ea1i \u0111\u00e1 m\u1eb9: phi\u1ebfn mica, \u0111\u00e1 v\u00f4i, \u0111\u00e1 phi\u1ebfn clorit, d\u0103m k\u1ebft t\u00edm, phi\u1ebfn th\u1ea1ch s\u00e9t, \u0111\u00e1 granit\/nai, riolit v\u00e0 sa th\u1ea1ch, t\u1ea7ng \u0111\u1ea5t t\u1eeb m\u1ecfng \u0111\u1ebfn trung b\u00ecnh v\u00e0 \u0111\u1ebfn r\u1ea5t d\u00e0y, \u0111\u1ed9 d\u1ed1c t\u1eeb 5 \u2013 25 \u0111\u1ed9 ho\u1eb7c h\u01a1n. Nh\u1eefng n\u01a1i c\u00f3 nhi\u1ec7t \u0111\u1ed9 b\u00ecnh qu\u00e2n n\u0103m t\u1eeb 21-27,6<sup>0<\/sup>C, l\u01b0\u1ee3ng m\u01b0a trung b\u00ecnh n\u0103m t\u1edd 1.444 \u2013 3.850mm. C\u00f3 th\u1ec3 tr\u1ed3ng thu\u1ea7n lo\u00e0i ho\u1eb7c h\u1ed7n lo\u00e0i v\u1edbi c\u00e1c lo\u00e0i c\u00e2y l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh nh\u01b0 Tr\u00e1m tr\u1eafng, S\u1ed3i ph\u1ea3ng, D\u1ebb, Xoan \u0111\u00e0o, Xoan ta,\u2026.<\/p>\n<p>* \u0110\u1eb7c \u0111i\u1ec3m sinh th\u00e1i, sinh l\u00fd c\u00e2y con trong giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m: \u0111\u1ec1 t\u00e0i ti\u1ebfn h\u00e0nh th\u00ed nghi\u1ec7m v\u1ec1 ch\u1ebf \u0111\u1ed9 che s\u00e1ng (v\u1edbi 5 c\u00f4ng th\u1ee9c che s\u00e1ng kh\u00e1c nhau: 0%; 25%; 50%; 75% v\u00e0 100%) v\u00e0 4 c\u00f4ng th\u1ee9c v\u1ec1 h\u1ed7n h\u1ee3p ru\u1ed9t b\u1ea7u. K\u1ebft qu\u1ea3 cho th\u1ea5y c\u00e2y con trong giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m th\u00edch h\u1ee3p v\u1edbi ch\u1ebf \u0111\u1ed9 che s\u00e1ng 50%, sau 6 th\u00e1ng c\u00f3 th\u1ec3 gi\u1ea3m d\u1ea7n xu\u1ed1ng 25% v\u00e0 tr\u01b0\u1edbc khi xu\u1ea5t v\u01b0\u1eddn t\u1eeb 1 \u2013 2 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. \u0110\u1ec3 t\u1ea1o c\u00e2y con c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng h\u1ed7n h\u1ee3p ru\u1ed9t b\u1ea7u nh\u01b0 sau: 90% \u0111\u1ea5t t\u1ea7ng A + 8% ph\u00e2n chu\u1ed3ng hoai + 2% ph\u00e2n vi sinh h\u1eefu c\u01a1 ho\u1eb7c 90% \u0111\u1ea5t t\u1ea7ng A + 8% ph\u00e2n chu\u1ed3ng hoai + 2% NPK t\u1ed5ng h\u1ee3p (t\u1ef7 l\u1ec7 5:10:3).<\/p>\n<p>* V\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m v\u1eadt h\u1eadu: \u0111\u1ec1 t\u00e0i ti\u1ebfn h\u00e0nh theo d\u00f5i \u1edf r\u1eebng tr\u1ed3ng t\u1eeb 8 \u2013 10 n\u0103m tu\u1ed5i, \u1edf 3 v\u00f9ng sinh th\u00e1i ch\u00ednh: H\u00e0 N\u1ed9i, Qu\u1ea3ng Nam v\u00e0 Ki\u00ean Giang; th\u1eddi gian nghi\u00ean c\u1ee9u t\u1eeb th\u00e1ng 10\/2009 \u0111\u1ebfn th\u00e1ng 9\/2010. K\u1ebft qu\u1ea3 cho th\u1ea5y th\u1eddi \u0111i\u1ec3m b\u1eaft \u0111\u1ea7u v\u00e0 k\u1ebft th\u00fac c\u0169ng nh\u01b0 kho\u1ea3ng th\u1eddi gian k\u00e9o d\u00e0i c\u1ee7a c\u00e1c pha v\u1eadt h\u1eadu r\u1ea5t kh\u00e1c nhau, t\u1eeb pha r\u1ee5ng l\u00e1, ra ch\u1ed3i, ra l\u00e1 non, ra n\u1ee5, n\u1edf hoa, k\u1ebft qu\u1ea3 v\u00e0 qu\u1ea3 ch\u00edn. \u0110i\u1ec1u \u0111\u00e1ng ch\u00fa \u00fd l\u00e0 c\u00e1c pha v\u1eadt h\u1eadu th\u01b0\u1eddng b\u1eaft \u0111\u1ea7u v\u00e0 k\u1ebft th\u00fac s\u1edbm h\u01a1n \u1edf khu v\u1ef1c Qu\u1ea3ng Nam v\u00e0 mu\u1ed9n h\u01a1n \u1edf Ki\u00ean Giang, m\u1eb7c d\u00f9 nhi\u1ec7t \u0111\u1ed9 b\u00ecnh qu\u00e2n n\u0103m t\u0103ng d\u1ea7n t\u1eeb ph\u00eda B\u1eafc xu\u1ed1ng ph\u00eda Nam, nh\u01b0ng l\u01b0\u1ee3ng m\u01b0a v\u00e0 s\u1ed1 ng\u00e0y m\u01b0a l\u1ea1i cao nh\u1ea5t \u1edf Qu\u1ea3ng Nam, c\u00f3 l\u1ebd \u0111\u00e2y l\u00e0 nguy\u00ean nh\u00e2n ch\u00ednh g\u00e2y n\u00ean hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y.<\/p>\n<p>&#8211; K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng v\u00e0 kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9:<\/p>\n<p>* Nghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng: \u0111\u1ec1 t\u00e0i s\u1eed d\u1ee5ng 2 ph\u01b0\u01a1ng ph\u00e1p nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh l\u00e0 gi\u00e2m hom v\u00e0 nu\u00f4i c\u1ea5y m\u00f4 t\u1ebf b\u00e0o \u0111\u1ed1i v\u1edbi c\u00e2y 10 n\u0103m tu\u1ed5i. T\u1eeb \u0111\u00f3, k\u1ebft h\u1ee3p c\u00f4ng ngh\u1ec7 m\u00f4 hom c\u00f3 th\u1ec3 r\u00fat ng\u1eafn \u0111\u01b0\u1ee3c c\u1ea3 th\u1eddi gian, kinh ph\u00ed v\u00e0 nh\u00e2n c\u00f4ng lao \u0111\u1ed9ng so v\u1edbi th\u1ef1c hi\u1ec7n ho\u00e0n to\u00e0n b\u1eb1ng c\u00f4ng ngh\u1ec7 nu\u00f4i c\u1ea5y m\u00f4 t\u1ebf b\u00e0o. K\u1ebft qu\u1ea3, \u0111\u1ec1 t\u00e0i \u0111\u00e3 x\u00e2y d\u1ef1ng \u0111\u01b0\u1ee3c 01 h\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt v\u1ec1 nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh c\u00e2y D\u00f3 b\u1ea7u b\u1eb1ng c\u00f4ng ngh\u1ec7 m\u00f4 &#8211; hom.<\/p>\n<p>* Nghi\u00ean c\u1ee9u kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9: c\u00e1c th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed t\u1ea1i 4 \u0111\u1ecba \u0111i\u1ec3m t\u01b0\u01a1ng \u1ee9ng v\u1edbi 4 v\u00f9ng sinh th\u00e1i ch\u00ednh: Qu\u1ea3ng Ninh v\u00e0 H\u00e0 N\u00f4i (v\u00f9ng \u0110\u00f4ng B\u1eafc B\u1ed9); H\u00e0 T\u0129nh (v\u00f9ng B\u1eafc Trung B\u1ed9); Qu\u1ea3ng Nam (Nam Trung B\u1ed9). C\u0103n c\u1ee9 v\u00e0o k\u1ebft qu\u1ea3 kh\u1ea3o nghi\u1ec7m c\u00e1c lo\u00e0i\/xu\u1ea5t x\u1ee9, sau 2 n\u0103m, b\u01b0\u1edbc \u0111\u1ea7u c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh khu v\u1ef1c \u0110\u00f4ng B\u1eafc B\u1ed9 n\u00ean ch\u1ecdn lo\u00e0i D\u00f3 b\u1ea7u xu\u1ea5t x\u1ee9 An Giang, Ki\u00ean Giang v\u00e0 Qu\u1ea3ng Nam; lo\u00e0i D\u00f3 qu\u1ea3 nh\u0103n xu\u1ea5t x\u1ee9 Qu\u1ea3ng Ninh. Khu v\u1ef1c H\u00e0 N\u1ed9i c\u00f3 th\u1ec3 ch\u1ecdn \u00a0lo\u00e0i D\u00f3 b\u1ea7u xu\u1ea5t x\u1ee9 Ki\u00ean Giang; lo\u00e0i D\u00f3 qu\u1ea3 nh\u0103n xu\u1ea5t x\u1ee9 Qu\u1ea3ng Ninh. Khu v\u1ef1c B\u1eafc Trung B\u1ed9 ch\u1ecdn lo\u00e0i D\u00f3 b\u1ea7u xu\u1ea5t x\u1ee9 H\u00e0 T\u0129nh, Ki\u00ean Giang v\u00e0 An Giang. Khu v\u1ef1c Nam Trung B\u1ed9 ch\u1ecdn lo\u00e0i D\u00f3 b\u1ea7u xu\u1ea5t x\u1ee9 Qu\u1ea3ng Nam v\u00e0 An Giang; lo\u00e0i D\u00f3 qu\u1ea3 nh\u0103n xu\u1ea5t x\u1ee9 Qu\u1ea3ng Ninh.<\/p>\n<p>&#8211; K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u b\u1ed5 sung m\u1ed9t s\u1ed1 bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng: \u0111\u1ec1 t\u00e0i ch\u1ec9 nghi\u00ean c\u1ee9u b\u1ed5 sung s\u1ef1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p tr\u1ed3ng d\u01b0\u1edbi t\u00e1n r\u1eebng c\u00f3 \u0111\u1ed9 t\u00e0n che kh\u00e1c nhau, \u1ea3nh h\u01b0\u1edfng c\u1ee7a m\u1eadt \u0111\u1ed9 v\u00e0 ph\u00e2n b\u00f3n \u0111\u1ebfn kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y D\u00f3 b\u1ea7u v\u1edbi c\u00e1c xu\u1ea5t x\u1ee9 t\u1ea1i ch\u1ed7 \u1edf m\u1ed7i v\u00f9ng sinh th\u00e1i. K\u1ebft qu\u1ea3 cho th\u1ea5y c\u00f3 th\u1ec3 tr\u1ed3ng thu\u1ea7n lo\u00e0i n\u01a1i \u0111\u1ea5t tr\u1ed1ng, m\u1eadt \u0111\u1ed9 t\u1eeb 1.100-1.660 c\u00e2y\/ha, c\u00f3 th\u1ec3 tr\u1ed3ng d\u01b0\u1edbi t\u00e1n r\u1eebng Th\u00f4ng ba l\u00e1 ho\u1eb7c Keo lai c\u00f3 \u0111\u1ed9 t\u00e0n che &lt;35%. Nh\u1eefng n\u01a1i \u0111\u1ea5t c\u00f2n c\u00f3 t\u00ednh ch\u1ea5t r\u1eebng kh\u00f4ng c\u1ea7n thi\u1ebft b\u00f3n l\u00f3t ph\u00e2n, nh\u1eefng nh\u1eefng n\u01a1i \u0111\u1ea5t \u0111\u00e3 tho\u00e1i h\u00f3a, kh\u00f4ng c\u00f2n t\u00ednh ch\u1ea5t \u0111\u1ea5t r\u1eebng c\u1ea7n b\u00f3n l\u00f3t 2\u20133kg ph\u00e2n chu\u1ed3ng hoai\/h\u1ed1 ho\u1eb7c 0,2kg NPK (5:10:3) ho\u1eb7c 1kg ph\u00e2n h\u1eefu c\u01a1 vi sinh. \u0110\u1ec1 t\u00e0i \u0111\u00e3 x\u00e2y d\u1ef1ng \u0111\u01b0\u1ee3c 01 b\u1ea3n h\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng c\u00e2y D\u00f3 b\u1ea7u.<\/p>\n<p><b><i>3.5. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u s\u1eed d\u1ee5ng t\u1ed5ng h\u1ee3p g\u1ed7 c\u00e2y D\u00f3 b\u1ea7u:<\/i><\/b><\/p>\n<p><i>&#8211; Ti\u1ec1m n\u0103ng b\u1ed9t gi\u1ea5y<\/i>: c\u0103n c\u1ee9 k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u v\u1ec1 t\u1ef7 tr\u1ecdng g\u1ed7, k\u00edch th\u01b0\u1edbc x\u01a1 s\u1ee3\u1ecb c\u1ee7a g\u1ed7, th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a g\u1ed7 c\u00e2y D\u00f3 b\u1ea7u, m\u1ee9c d\u00f9ng ki\u1ec1m trong quy tr\u00ecnh n\u1ea5u b\u1ed9t g\u1ed7 c\u00e2y D\u00f3 b\u1ea7u v\u00e0 m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t c\u01a1 l\u00fd c\u1ee7a b\u1ed9t sau n\u1ea5u ch\u01b0a t\u1ea9y tr\u1eafng v\u00e0 sau t\u1ea9y tr\u1eafng. K\u1ebft qu\u1ea3 cho th\u1ea5y \u1edf giai \u0111o\u1ea1n 10 n\u0103m tu\u1ed5i, t\u1ef7 tr\u1ecdng g\u1ed7 D\u00f3 b\u1ea7u r\u1ea5t th\u1ea5p, bi\u1ebfn \u0111\u1ed9ng t\u1eeb 282,89-329,18kg\/m<sup>3<\/sup>; h\u00e0m l\u01b0\u1ee3ng xenluyl\u00f4 \u0111\u1ec1u &gt; 50%, t\u01b0\u01a1ng \u0111\u01b0\u01a1ng ho\u1eb7c cao h\u01a1n g\u1ed7 Keo lai v\u00e0 Keo tai t\u01b0\u1ee3ng. Hi\u1ec7u su\u1ea5t b\u1ed9t c\u1ee7a g\u1ed7 D\u00f3 b\u1ea7u sau khi t\u1ea9y tr\u1eafng kh\u00e1 th\u1ea5p. \u0110\u1ed9 tr\u1eafng c\u1ee7a b\u1ed9t kh\u00e1 cao, \u0111\u1ea1t t\u1eeb 87,1 \u2013 87,9%ISO; c\u00e1c ch\u1ec9 s\u1ed1 v\u1ec1 \u0111\u1ed9 b\u1ec1n c\u01a1 l\u00fd c\u1ee7a b\u1ed9t r\u1ea5t th\u1ea5p, ch\u1ea5t l\u01b0\u1ee3ng b\u1ed9t sau t\u1ea9y tr\u1eafng ch\u1ec9 \u0111\u1ea1t t\u1eeb 60 \u2013 86% so v\u1edbi b\u1ed9t c\u1ee7a g\u1ed7 Keo lai. Tuy nhi\u00ean, g\u1ed7 D\u00f3 b\u1ea7u c\u00f3 ti\u1ec1m n\u0103ng l\u00e0m b\u1ed9t gi\u1ea5y kh\u00e1 t\u1ed1t, d\u1ec5 t\u1ea9y tr\u1eafng, nh\u01b0ng hi\u1ec7u su\u1ea5t th\u1ea5p. \u0110\u1ec3 n\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng b\u1ed9t v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m c\u1ea7n ph\u1ea3i pha tr\u1ed9n v\u1edbi m\u1ed9t s\u1ed1 lo\u1ea1i nguy\u00ean li\u1ec7u s\u1ee3i d\u00e0i h\u01a1n nh\u01b0 b\u1ed9t c\u1ee7a c\u00e1c lo\u00e0i keo, b\u1ea1ch \u0111\u00e0n, th\u00f4ng, lu\u1ed3ng,\u2026<\/p>\n<p><i>&#8211; T\u00ednh ch\u1ea5t v\u1eadt l\u00fd v\u00e0 c\u01a1 h\u1ecdc g\u1ed7 c\u00e2y D\u00f3 b\u1ea7u<\/i>: Nghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m v\u1ec1 k\u00edch th\u01b0\u1edbc v\u00e0 khuy\u1ebft t\u1eadt c\u1ee7a g\u1ed7 v\u00e0 t\u00ednh ch\u1ea5t v\u1eadt l\u00fd g\u1ed7 c\u00e2y D\u00f3 b\u1ea7u 10 n\u0103m tu\u1ed5i \u1edf H\u00e0 T\u0129nh. K\u1ebft qu\u1ea3 cho th\u1ea5y t\u1ea5t c\u1ea3 c\u00e1c ch\u1ec9 s\u1ed1 bi\u1ec3u th\u1ecb t\u00ednh ch\u1ea5t c\u1ee7a g\u1ed7 D\u00f3 b\u1ea7u 10 n\u0103m tu\u1ed5i \u0111\u1ec1u r\u1ea5t th\u1ea5p, \u0111\u1ed1i chi\u1ebfu v\u1edbi b\u1ea3ng ph\u00e2n lo\u1ea1i t\u1ea1m th\u1eddi c\u00e1c lo\u1ea1i g\u1ed7 \u0111\u00e3 \u0111\u01b0\u1ee3c ban h\u00e0nh theo Quy\u1ebft \u0111\u1ecbnh s\u1ed1 2198\/CNR ng\u00e0y 26\/11\/1977 c\u1ee7a B\u1ed9 L\u00e2m nghi\u1ec7p (nay l\u00e0 B\u1ed9 NN &amp; PTNT) th\u00ec g\u1ed7 D\u00f3 b\u1ea7u t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi nh\u00f3m VIII, \u00e1p d\u1ee5ng ti\u00eau chu\u1ea9n \u201cTCVN 1072-71. G\u1ed7 &#8211; Ph\u00e2n nh\u00f3m theo t\u00ednh ch\u1ea5t c\u01a1 l\u00fd\u201d th\u00ec g\u1ed7 D\u00f3 b\u1ea7u c\u0169ng x\u1ebfp v\u00e0o nh\u00f3m VI, nh\u00f3m c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c k\u00e9m nh\u1ea5t. Nh\u01b0 v\u1eady, c\u00f3 th\u1ec3 kh\u1eb3ng \u0111\u1ecbnh g\u1ed7 D\u00f3 b\u1ea7u kh\u00f4ng th\u00edch h\u1ee3p trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p \u0111\u00f2i h\u1ecfi ph\u1ea3i c\u00f3 t\u00ednh ch\u1ecbu l\u1ef1c cao nh\u01b0 x\u00e2y d\u1ef1ng, giao th\u00f4ng v\u1eadn t\u1ea3i, \u0111\u1ed3 m\u1ed9c gia d\u1ee5ng,\u2026<\/p>\n<p><b>4)\u00a0\u00a0\u00a0\u00a0 <\/b><b>K\u1ebft lu\u1eadn v\u00e0 \u0111\u1ec1 ngh\u1ecb<\/b><\/p>\n<p><b><i><span style=\"text-decoration: underline;\">* K\u1ebft lu\u1eadn<\/span><\/i><\/b><\/p>\n<p><i>1. Th\u1ef1c tr\u1ea1ng s\u1ea3n xu\u1ea5t c\u00e2y D\u00f3 tr\u1ea7m \u1edf n\u01b0\u1edbc ta t\u00ednh \u0111\u1ebfn h\u1ebft n\u0103m 2009:<\/i><\/p>\n<p>Di\u1ec7n t\u00edch g\u00e2y tr\u1ed3ng c\u00e2y d\u00f3 tr\u1ea7m \u1edf n\u01b0\u1edbc ta t\u00ednh \u0111\u1ebfn h\u1ebft n\u0103m 2009 c\u00f3 kho\u1ea3ng t\u1eeb 11.000\u201312.000ha, ch\u1ee7 y\u00eau l\u00e0 t\u1eeb h\u1ea1t. Ph\u1ea7n l\u1edbn \u0111\u01b0\u1ee3c tr\u1ed3ng ph\u00e2n t\u00e1n ho\u1eb7c h\u1ed7n giao trong c\u00e1c v\u01b0\u1eddn h\u1ed9 ho\u1eb7c v\u01b0\u1eddn r\u1eebng v\u1edbi m\u1eadt \u0111\u1ed9 kho\u1ea3ng 500-700c\u00e2y\/ha, m\u1eadt \u0111\u1ed9 tr\u1ed3ng thu\u1ea7n lo\u00e0i t\u1eeb 1100-2500 c\u00e2y\/ha. Kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y D\u00f3 b\u1ea7u nhanh nh\u1ea5t \u1edf B\u00ecnh Ph\u01b0\u1edbc, ti\u1ebfp \u0111\u1ebfn Qu\u1ea3ng Nam v\u00e0 An Giang, ch\u1eadm nh\u1ea5t \u1edf H\u00e0 T\u0129nh.<\/p>\n<p>Ch\u1ebf ph\u1ea9m k\u00edch c\u1ea3m t\u1ea1o tr\u1ea7m c\u00f3 2 nh\u00f3m ch\u00ednh g\u1ed3m ch\u1ebf ph\u1ea9m h\u00f3a h\u1ecdc v\u00e0 ch\u1ebf ph\u1ea9m sinh h\u1ecdc; d\u00f9 ch\u1ebf ph\u1ea9m n\u00e0o \u0111\u1ec1u ph\u1ea3i t\u00e1c \u0111\u1ed9ng c\u01a1 gi\u1edbi khoan s\u00e2u v\u00e0o th\u00e2n c\u00e2y r\u1ed3i m\u1edbi \u0111\u01b0a ch\u1ebf ph\u1ea9m v\u00e0o l\u1ed7 khoan. H\u1ea7u h\u1ebft c\u00e1c ch\u1ebf ph\u1ea9m sinh h\u1ecdc k\u1ebft h\u1ee3p v\u1edbi bi\u1ec7n ph\u00e1p c\u01a1 gi\u1edbi cho k\u1ebft qu\u1ea3 r\u00f5 h\u01a1n c\u00e1c ch\u1ebf ph\u1ea9m h\u00f3a h\u1ecdc, h\u00e0m l\u01b0\u1ee3ng h\u1ed7n h\u1ee3p ch\u1ee9a tinh d\u1ea7u trong c\u00e1c m\u1eabu g\u1ed7 \u0111\u01b0\u1ee3c t\u00e1c \u0111\u1ed9ng c\u00f3 xu h\u01b0\u1edbng cao h\u01a1n c\u00e1c m\u1eabu g\u1ed7 kh\u00f4ng \u0111\u01b0\u1ee3c t\u00e1c \u0111\u1ed9ng. H\u00e0m l\u01b0\u1ee3ng h\u1ed7n h\u1ee3p ch\u1ee9a tinh d\u1ea7u sau ch\u01b0ng c\u1ea5t ch\u01b0a ph\u1ea3i l\u00e0 tinh d\u1ea7u, v\u00ec ch\u00fang ch\u1ee9a nhi\u1ec1u acid b\u00e9o n\u00ean th\u01b0\u1eddng c\u00f3 d\u1ea1ng s\u00e1p \u0111\u1eb7c.<\/p>\n<p>Hi\u1ec7n nay \u1edf n\u01b0\u1edbc ta \u0111\u00e3 t\u00ecm th\u1ea5y 4 lo\u00e0i d\u00f3 c\u00f3 kh\u1ea3 n\u0103ng sinh tr\u1ea7m trong th\u00e2n c\u00e2y, bao g\u1ed3m: D\u00f3 b\u1ea7u (<i>A. crassna<\/i>), D\u00f3 b\u00e0 n\u00e0 (<i>A. banaensis<\/i>), D\u00f3 g\u1ea1ch (<i>A. bailloni<\/i>), v\u00e0 D\u00f3 qu\u1ea3 nh\u0103n (<i>A. rugosa<\/i>). Ph\u1ea7n l\u1edbn di\u1ec7n t\u00edch \u0111\u01b0\u1ee3c tr\u1ed3ng hi\u1ec7n nay l\u00e0 lo\u00e0i D\u00f3 b\u1ea7u v\u00e0 m\u1ed9t s\u1ed1 di\u1ec7n t\u00edch r\u1ea5t nh\u1ecf \u0111\u01b0\u1ee3c tr\u1ed3ng lo\u00e0i D\u00f3 qu\u1ea3 nh\u0103n \u1edf H\u00f2a B\u00ecnh, Kon Tum, B\u1eafc Giang v\u00e0 Qu\u1ea3ng Ninh.<\/p>\n<p><i>2. K\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m m\u1ed9t s\u1ed1 bi\u1ec7n ph\u00e1p t\u00e1c \u0111\u1ed9ng t\u1ea1o tr\u1ea7m<\/i><\/p>\n<p>H\u00e0m l\u01b0\u1ee3ng h\u1ed7n h\u1ee3p ch\u1ee9a tinh d\u1ea7u tr\u1ea7m c\u1ee7a nh\u1eefng m\u1eabu g\u1ed7 \u0111\u01b0\u1ee3c k\u00edch c\u1ea3m b\u1eb1ng c\u00e1c ch\u1ebf ph\u1ea9m sinh h\u1ecdc nh\u00ecn chung cao h\u01a1n ch\u1ebf ph\u1ea9m h\u00f3a h\u1ecdc, r\u00f5 nh\u1ea5t \u1edf giai \u0111o\u1ea1n 12 n\u0103m tu\u1ed5i.<\/p>\n<p>C\u1ea5u t\u1ea1o th\u00f4 \u0111\u1ea1i \u1edf g\u1ed7 l\u00e0nh c\u1ee7a c\u00e2y D\u00f3 b\u1ea7u \u0111\u00e3 b\u1ecb t\u00e1c \u0111\u1ed9ng t\u1ea1o tr\u1ea7m 12 th\u00e1ng v\u00e0 g\u1ed7 c\u1ee7a c\u00e2y kh\u00f4ng t\u00e1c \u0111\u1ed9ng \u0111\u1ec1u gi\u1ed1ng nhau, nh\u01b0ng c\u00f3 m\u1ed9t s\u1ed1 kh\u00e1c bi\u1ec7t gi\u1eefa g\u1ed7 \u1edf v\u00f9ng b\u1ecb t\u00e1c \u0111\u1ed9ng so v\u1edbi v\u00f9ng g\u1ed7 l\u00e0nh c\u1ee7a c\u00f9ng m\u1ed9t c\u00e2y l\u00e0 m\u00e0u s\u1eafc th\u00ec bi\u1ebfn \u0111\u1ed5i sang m\u00e0u x\u00e1m \u0111en, c\u00f3 \u0111\u01b0\u1eddng ranh gi\u1edbi gi\u1eefa hai v\u00f9ng kh\u00e1 r\u00f5 r\u1ec7t, g\u1ed7 c\u00f3 m\u00f9i th\u01a1m \u0111\u1eb7c tr\u01b0ng v\u00e0 n\u1eb7ng h\u01a1n ph\u1ea7n g\u1ed7 l\u00e0nh n\u00ean c\u00f3 th\u1ec3 t\u1ea1m g\u1ecdi l\u00e0 g\u1ed7 \u0111\u00e3 nhi\u1ec5m tr\u1ea7m.<\/p>\n<p>C\u1ea5u t\u1ea1o hi\u1ec3n vi c\u1ee7a g\u1ed7 b\u1ecb t\u00e1c \u0111\u1ed9ng c\u00f3 nhi\u1ec1u \u0111\u1eb7c \u0111i\u1ec3m kh\u00e1c bi\u1ec7t so v\u1edbi g\u1ed7 l\u00e0nh nh\u01b0 g\u1ed7 b\u1ecb t\u00e1c \u0111\u1ed9ng c\u00f3 m\u00e0u s\u1eafc s\u1eabm h\u01a1n, ph\u1ea7n s\u1eabm m\u00e0u c\u00f3 th\u1ec3 chia l\u00e0m 2 ph\u1ea7n. Ph\u1ea7n ti\u1ebfp gi\u00e1p v\u1edbi g\u1ed7 l\u00e0nh c\u1ee9ng h\u01a1n, c\u00e1c t\u1ebf b\u00e0o v\u00e0 m\u00f4 \u0111\u1ec1u c\u00f3 c\u00e1c ch\u1ea5t ch\u1ee9a m\u00e0u \u0111en v\u00e0 c\u00f3 m\u00f9i th\u01a1m \u0111\u1eb7c tr\u01b0ng. Ph\u1ea7n ph\u00eda trong gi\u00e1p v\u1edbi g\u1ed7 m\u1ee5c c\u1ee7a l\u1ed7 khoan c\u00f3 ch\u1ee9a ch\u1ea5t \u0111\u00e3 gi\u1ea3m \u0111i r\u00f5 r\u1ec7t, ph\u1ea7n l\u1edbn v\u1ebft v\u1ecf v\u00e0 m\u1ed9t ph\u1ea7n tia g\u1ed7 ho\u1eb7c t\u1ebf b\u00e0o trong tia g\u1ed7 c\u00f3 ch\u1ee9a ch\u1ea5t m\u00e0u \u0111en, s\u1ee3i g\u1ed7 kh\u00f4ng c\u00f2n ch\u1ea5t ch\u1ee9a v\u00e0 ch\u1ec9 c\u00f3 s\u1ed1 \u00edt l\u1ed7 m\u1ea1ch g\u1ed7 c\u00f2n ch\u1ea5t ch\u1ee9a.<\/p>\n<p><i>3. Ch\u1ea5t l\u01b0\u1ee3ng tinh d\u1ea7u tr\u1ea7m v\u00e0 th\u1ecb tr\u01b0\u1eddng ti\u00eau th\u1ee5:<\/i><\/p>\n<p>Th\u00e0nh ph\u1ea7n h\u1ed7n h\u1ee3p ch\u1ee9a tinh d\u1ea7u c\u00f3 th\u1ec3 chia l\u00e0m 3 nh\u00f3m ch\u00ednh: Sesquiterpene; c\u00e1c acid b\u00e9o v\u00e0 d\u1eabn xu\u1ea5t c\u1ee7a ch\u00fang; c\u00e1c ch\u1ea5t kh\u00e1c. Ch\u1ea5t l\u01b0\u1ee3ng tinh d\u1ea7u ph\u1ee5 thu\u1ed9c ch\u1ee7 y\u1ebfu v\u00e0o nh\u00f3m Sesquiterpene, s\u1ed1 l\u01b0\u1ee3ng Sesquiterpene trong tinh d\u1ea7u ph\u1ee5 thu\u1ed9c v\u00e0o tu\u1ed5i c\u00e2y v\u00e0 bi\u1ec7n ph\u00e1p t\u00e1c \u0111\u1ed9ng kh\u00e1 r\u00f5, nh\u01b0ng h\u00e0m l\u01b0\u1ee3ng Sesquiterpene ph\u1ee5 thu\u1ed9c v\u00e0o tu\u1ed5i c\u00e2y ch\u01b0a r\u00f5 (trong ph\u1ea1m vi c\u00e2y \u2264 15 tu\u1ed5i).<\/p>\n<p>T\u00e1c \u0111\u1ed9ng t\u1ea1o tr\u1ea7m \u1edf giai \u0111o\u1ea1n 11 n\u0103m tu\u1ed5i c\u00f3 k\u1ebft qu\u1ea3 r\u00f5 r\u00e0ng h\u01a1n giai \u0111o\u1ea1n 5 n\u0103m v\u00e0 8 n\u0103m tu\u1ed5i. Ch\u1ebf ph\u1ea9m sinh h\u1ecdc c\u1ee7a S\u1edf KHCN B\u00ecnh Ph\u01b0\u1edbc k\u00eat h\u1ee3p v\u1edbi ph\u00f2ng B\u1ea3o v\u1ec7 th\u1ef1c v\u1eadt r\u1eebng (Vi\u1ec7n KHLN) cho h\u00e0m l\u01b0\u1ee3ng Sesquiterpene cao nh\u1ea5t v\u00e0 h\u00e0m l\u01b0\u1ee3ng acid b\u00e9o th\u1ea5p nh\u1ea5t.<\/p>\n<p>Th\u1ecb tr\u01b0\u1eddng n\u01b0\u1edbc ngo\u00e0i t\u1eeb tinh d\u1ea7u \u0111\u1ebfn n\u1ebfn, nhang v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m th\u00f4 kh\u00e1c \u0111\u1ec1u kh\u00e1 r\u1ed9ng l\u1edbn, nh\u01b0ng ng\u00e0nh th\u01b0\u01a1ng m\u1ea1i n\u01b0\u1edbc ta ch\u01b0a khai th\u00e1c \u0111\u01b0\u1ee3c h\u1ebft ti\u1ec1m n\u0103ng th\u1ecb tr\u01b0\u1eddng c\u1ee7a c\u00e1c m\u1eb7t h\u00e0ng n\u00e0y, nh\u1ea5t l\u00e0 c\u00e1c doanh nghi\u1ec7p kinh doanh c\u00f2n nhi\u1ec1u h\u1ea1n ch\u1ebf \u0111\u1ec3 ti\u1ebfp c\u1eadn v\u1edbi th\u1ecb tr\u01b0\u1eddng n\u01b0\u1edbc ngo\u00e0i.<\/p>\n<p><i>4. B\u1ed5 sung m\u1ed9t s\u1ed1 bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt l\u00e2m sinh:<\/i><\/p>\n<p>\u0110i\u1ec1u ki\u1ec7n sinh th\u00e1i c\u00e2y con trong giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m: th\u00edch h\u1ee3p v\u1edbi ch\u1ebf \u0111\u1ed9 che s\u00e1ng 50%, sau 6 th\u00e1ng c\u00f3 th\u1ec3 gi\u1ea3m d\u1ea7n xu\u1ed1ng 25% v\u00e0 tr\u01b0\u1edbc khi xu\u1ea5t v\u01b0\u1eddn t\u1eeb 1 \u2013 2 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. \u0110\u1ec3 t\u1ea1o c\u00e2y con c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng h\u1ed7n h\u1ee3p ru\u1ed9t b\u1ea7u nh\u01b0 sau: 90% \u0111\u1ea5t t\u1ea7ng A + 8% ph\u00e2n chu\u1ed3ng hoai + 2% ph\u00e2n vi sinh h\u1eefu c\u01a1, ho\u1eb7c 90% \u0111\u1ea5t t\u1ea7ng A + 8% ph\u00e2n chu\u1ed3ng hoai + 2% NPK t\u1ed5ng h\u1ee3p (t\u1ef7 l\u1ec7 5:10:3). \u0110i\u1ec1u ki\u1ec7n g\u00e2y tr\u1ed3ng D\u00f3 b\u1ea7u c\u00f3 th\u1ec3 tr\u1ed3ng \u0111\u01b0\u1ee3c \u1edf c\u00e1c v\u00f9ng tr\u00ean c\u00e1c lo\u1ea1i \u0111\u1ea5t ph\u00e1t tri\u1ec3n tr\u00ean c\u00e1c lo\u1ea1i \u0111\u00e1 m\u1eb9: phi\u1ebfn mica, \u0111\u00e1 v\u00f4i, \u0111\u00e1 phi\u1ebfn clorit, d\u0103m k\u1ebft t\u00edm, phi\u1ebfn th\u1ea1ch s\u00e9t, \u0111\u00e1 granit\/nai, riolit v\u00e0 sa th\u1ea1ch, t\u1ea7ng \u0111\u1ea5t t\u1eeb m\u1ecfng \u0111\u1ebfn trung b\u00ecnh v\u00e0 \u0111\u1ebfn r\u1ea5t d\u00e0y, \u0111\u1ed9 d\u1ed1c t\u1eeb 5 \u2013 25 \u0111\u1ed9 ho\u1eb7c h\u01a1n; nhi\u1ec7t \u0111\u1ed9 b\u00ecnh qu\u00e2n n\u0103m t\u1eeb 21-27,6<sup>0<\/sup>C; l\u01b0\u1ee3ng m\u01b0a trung b\u00ecnh n\u0103m t\u1edd 1.444\u20133.850mm. C\u00f3 th\u1ec3 tr\u1ed3ng thu\u1ea7n lo\u00e0i ho\u1eb7c h\u1ed7n lo\u00e0i v\u1edbi c\u00e1c lo\u00e0i c\u00e2y l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh nh\u01b0 Tr\u00e1m tr\u1eafng, S\u1ed3i ph\u1ea3ng, D\u1ebb, Xoan \u0111\u00e0o, Xoan ta,\u2026.<\/p>\n<p>Th\u1eddi \u0111i\u1ec3m b\u1eaft \u0111\u1ea7u v\u00e0 k\u1ebft th\u00fac c\u0169ng nh\u01b0 kho\u1ea3ng th\u1eddi gian k\u00e9o d\u00e0i c\u1ee7a c\u00e1c pha v\u1eadt h\u1eadu r\u1ea5t kh\u00e1c nhau, t\u1eeb pha r\u1ee5ng l\u00e1, ra ch\u1ed3i, ra l\u00e1 non, ra n\u1ee5, n\u1edf hoa, k\u1ebft qu\u1ea3 v\u00e0 qu\u1ea3 ch\u00edn. \u0110i\u1ec1u \u0111\u00e1ng ch\u00fa \u00fd l\u00e0 c\u00e1c pha v\u1eadt h\u1eadu th\u01b0\u1eddng b\u1eaft \u0111\u1ea7u v\u00e0 k\u1ebft th\u00fac s\u1edbm h\u01a1n \u1edf Qu\u1ea3ng Nam v\u00e0 mu\u1ed9n nh\u1ea5t \u1edf Ki\u00ean Giang. M\u1eb7c d\u00f9 nhi\u1ec7t \u0111\u1ed9 b\u00ecnh qu\u00e2n n\u0103m t\u0103ng d\u1ea7n t\u1eeb ph\u00eda B\u1eafc v\u00e0o ph\u00eda Nam, nh\u01b0ng l\u01b0\u1ee3ng m\u01b0a v\u00e0 s\u1ed1 ng\u00e0y m\u01b0a l\u1ea1i cao nh\u1ea5t \u1edf Qu\u1ea3ng Nam.<\/p>\n<p>K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u b\u01b0\u1edbc \u0111\u1ea7u c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh khu v\u1ef1c \u0110\u00f4ng B\u1eafc B\u1ed9 n\u00ean ch\u1ecdn lo\u00e0i D\u00f3 b\u1ea7u xu\u1ea5t x\u1ee9 An Giang, Ki\u00ean Giang v\u00e0 Qu\u1ea3ng Nam; lo\u00e0i D\u00f3 qu\u1ea3 nh\u0103n xu\u1ea5t x\u1ee9 Qu\u1ea3ng Ninh. Khu v\u1ef1c H\u00e0 N\u1ed9i c\u00f3 th\u1ec3 ch\u1ecdn lo\u00e0i D\u00f3 b\u1ea7u xu\u1ea5t x\u1ee9 Ki\u00ean Giang; lo\u00e0i D\u00f3 qu\u1ea3 nh\u0103n xu\u1ea5t x\u1ee9 Qu\u1ea3ng Ninh. Khu v\u1ef1c B\u1eafc Trung B\u1ed9 ch\u1ecdn lo\u00e0i D\u00f3 b\u1ea7u xu\u1ea5t x\u1ee9 H\u00e0 T\u0129nh, Ki\u00ean Giang v\u00e0 An Giang. Khu v\u1ef1c Nam Trung B\u1ed9 ch\u1ecdn lo\u00e0i D\u00f3 b\u1ea7u xu\u1ea5t x\u1ee9 Qu\u1ea3ng Nam, An Giang; lo\u00e0i D\u00f3 qu\u1ea3 nh\u0103n xu\u1ea5t x\u1ee9 Qu\u1ea3ng Ninh.<\/p>\n<p>K\u1ef9 thu\u1eadt tr\u1ed3ng: c\u00f3 th\u1ec3 tr\u1ed3ng thu\u1ea7n lo\u00e0i n\u01a1i \u0111\u1ea5t tr\u1ed1ng, m\u1eadt \u0111\u1ed9 t\u1eeb 1.100-1.660 c\u00e2y\/ha, tr\u1ed3ng d\u01b0\u1edbi t\u00e1n r\u1eebng Th\u00f4ng ba l\u00e1 ho\u1eb7c Keo lai c\u00f3 \u0111\u1ed9 t\u00e0n che &lt;35%. \u1ede n\u01a1i \u0111\u1ea5t c\u00f2n c\u00f3 t\u00ednh ch\u1ea5t r\u1eebng kh\u00f4ng c\u1ea7n thi\u1ebft b\u00f3n l\u00f3t ph\u00e2n, nh\u1eefng n\u01a1i \u0111\u1ea5t \u0111\u00e3 tho\u00e1i h\u00f3a, kh\u00f4ng c\u00f2n t\u00ednh ch\u1ea5t \u0111\u1ea5t r\u1eebng c\u1ea7n b\u00f3n l\u00f3t 2\u20133kg ph\u00e2n chu\u1ed3ng hoai\/h\u1ed1 ho\u1eb7c 0,2kg NPK (5:10:3) ho\u1eb7c 1kg ph\u00e2n h\u1eefu c\u01a1 vi sinh.<\/p>\n<p><i>5. V\u1ec1 s\u1eed d\u1ee5ng t\u1ed5ng h\u1ee3p g\u1ed7 c\u00e2y D\u00f3 tr\u1ea7m:<\/i><\/p>\n<p>Ti\u1ec1m n\u0103ng l\u00e0m b\u1ed9t gi\u1ea5y c\u1ee7a g\u1ed7 D\u00f3 b\u1ea7u kh\u00e1 cao, d\u1ec5 t\u1ea9y tr\u1eafng, nh\u01b0ng hi\u1ec7u su\u1ea5t b\u1ed9t sau t\u1ea9y tr\u1eafng kh\u00e1 th\u1ea5p, \u0111\u1ed9 tr\u1eafng c\u1ee7a b\u1ed9t D\u00f3 b\u1ea7u kh\u00e1 cao, \u0111\u1ea1t t\u1eeb 87,1-87,9% ISO, c\u00e1c ch\u1ec9 s\u1ed1 v\u1ec1 \u0111\u1ed9 b\u1ec1n c\u01a1 l\u00fd c\u1ee7a b\u1ed9t r\u1ea5t th\u1ea5p, ch\u1ea5t l\u01b0\u1ee3ng b\u1ed9t sau t\u1ea9y tr\u1eafng ch\u1ec9 \u0111\u1ea1t 60-86% so v\u1edbi b\u1ed9t c\u1ee7a g\u1ed7 keo lai. \u0110\u1ec3 n\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng b\u1ed9t v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m c\u1ea7n ph\u1ea3i pha tr\u1ed9n v\u1edbi m\u1ed9t s\u1ed1 lo\u1ea1i nguy\u00ean li\u1ec7u s\u1ee3i d\u00e0i h\u01a1n nh\u01b0 b\u1ed9t c\u1ee7a c\u00e1c lo\u00e0i keo, b\u1ea1ch \u0111\u00e0n, th\u00f4ng, lu\u1ed3ng,\u2026<\/p>\n<p>T\u1ea5t c\u1ea3 c\u00e1c ch\u1ec9 s\u1ed1 bi\u1ec3u th\u1ecb t\u00ednh ch\u1ea5t c\u1ee7a g\u1ed7 D\u00f3 b\u1ea7u 10 n\u0103m tu\u1ed5i \u0111\u1ec1u r\u1ea5t th\u1ea5p, \u0111\u1ed1i chi\u1ebfu v\u1edbi b\u1ea3ng ph\u00e2n lo\u1ea1i t\u1ea1m th\u1eddi c\u00e1c lo\u1ea1i g\u1ed7 \u0111\u00e3 \u0111\u01b0\u1ee3c ban h\u00e0nh th\u00ec g\u1ed7 d\u00f3 tr\u1ea7m t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi nh\u00f3m VIII ho\u1eb7c nh\u00f3m VI (theo b\u1ea3ng ph\u00e2n lo\u1ea1i t\u1ea1m th\u1eddi c\u00e1c lo\u1ea1i g\u1ed7 \u0111\u00e3 \u0111\u01b0\u1ee3c ban h\u00e0nh) n\u00ean g\u1ed7 d\u00f3 tr\u1ea7m (k\u1ec3 c\u1ea3 \u1edf tu\u1ed5i cao h\u01a1n 10 n\u0103m tu\u1ed5i) kh\u00f4ng th\u00edch h\u1ee3p trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p \u0111\u00f2i h\u1ecfi ph\u1ea3i c\u00f3 t\u00ednh ch\u1ecbu l\u1ef1c cao nh\u01b0 x\u00e2y d\u1ef1ng, giao th\u00f4ng v\u1eadn t\u1ea3i, \u0111\u1ed3 m\u1ed9c giai d\u1ee5ng,\u2026<\/p>\n<p><b><i><span style=\"text-decoration: underline;\">* T\u1ed3n t\u1ea1i:<\/span><\/i><\/b><\/p>\n<p>Do c\u00e2y D\u00f3 tr\u1ea7m trong t\u1ef1 nhi\u00ean \u0111\u00e3 c\u1ea1n ki\u1ec7t, h\u1ea7u h\u1ebft ch\u01b0a c\u00f3 ho\u1eb7c kh\u00f4ng c\u00f3 tr\u1ea7m n\u00ean vi\u1ec7c ch\u1ecdn gi\u1ed1ng theo kh\u1ea3 n\u0103ng h\u00ecnh th\u00e0nh tr\u1ea7m l\u00e0 r\u1ea5t h\u1ea1n ch\u1ebf. R\u1eebng tr\u1ed3ng ph\u1ea7n l\u1edbn l\u00e0 &lt;15 tu\u1ed5i, ch\u01b0a c\u00f3 kh\u1ea3 n\u0103ng h\u00ecnh th\u00e0nh tr\u1ea7m n\u00ean vi\u1ec7c ch\u1ecdn gi\u1ed1ng \u1edf r\u1eebng tr\u1ed3ng l\u00e0 ch\u01b0a kh\u1ea3 thi.<\/p>\n<p>C\u01a1 ch\u1ebf h\u00ecnh th\u00e0nh tr\u1ea7m trong th\u00e2n c\u00e2y l\u00e0 v\u1ea5n \u0111\u1ec1 \u0111\u00f2i h\u1ecfi nhi\u1ec1u th\u1eddi gian, kinh ph\u00ed v\u00e0 c\u00f4ng s\u1ee9c. Do th\u1eddi gian nghi\u00ean c\u1ee9u c\u00f3 h\u1ea1n, c\u00e1c kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9 c\u0169ng nh\u01b0 c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt l\u00e2m sinh t\u00e1c \u0111\u1ed9ng v\u00e0o r\u1eebng tr\u1ed3ng, x\u00e1c \u0111\u1ecbnh gi\u1ed1ng c\u00e2y c\u0169ng nh\u01b0 ch\u1ecdn ch\u1ebf ph\u1ea9m c\u00f3 kh\u1ea3 n\u0103ng t\u1ea1o tr\u1ea7m ch\u01b0a \u0111\u1ee7 th\u1eddi gian \u0111\u1ec3 \u0111\u00e1nh gi\u00e1, m\u1edbi ch\u1ec9 thu \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 b\u01b0\u1edbc \u0111\u1ea7u, ngay c\u1ea3 c\u00e1c n\u01b0\u1edbc ti\u00ean ti\u1ebfn trong khu v\u1ef1c c\u0169ng ch\u01b0a c\u00f3 k\u1ebft qu\u1ea3.<\/p>\n<p>Do tr\u1ea7m h\u01b0\u01a1ng v\u00e0 k\u1ef3 nam l\u00e0 nh\u1eefng s\u1ea3n ph\u1ea9m r\u1ea5t hi\u1ebfm v\u00e0 gi\u00e1 th\u00e0nh s\u1ea3n ph\u1ea9m cao n\u00ean r\u1ea5t kh\u00f3 mua \u0111\u01b0\u1ee3c m\u1eabu l\u00e0m \u0111\u1ed1i ch\u1ee9ng, nh\u1eefng so s\u00e1nh v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng c\u0169ng ch\u1ec9 th\u00f4ng qua c\u00e1c t\u00e0i li\u1ec7u tham kh\u1ea3o, ph\u1ea7n l\u1edbn tr\u00ean c\u00e1c trang \u0111i\u1ec7n t\u1eed n\u00ean \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ed9 tin c\u1eady kh\u00f4ng cao.<\/p>\n<p>Hi\u1ec7n nay v\u1eabn ch\u01b0a c\u00f3 ti\u00eau chu\u1ea9n v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng tinh d\u1ea7u tr\u1ea7m ch\u00ednh th\u1ee9c tr\u00ean th\u1ecb tr\u01b0\u1eddng n\u01b0\u1edbc ngo\u00e0i n\u00ean \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng tinh d\u1ea7u c\u00f2n g\u1eb7p nhi\u1ec1u kh\u00f3 kh\u0103n.<\/p>\n<p>V\u1ea5n \u0111\u1ec1 th\u1ecb tr\u01b0\u1eddng c\u00f2n li\u00ean quan \u0111\u1ebfn nhi\u1ec1u c\u01a1 quan qu\u1ea3n l\u00fd nh\u00e0 n\u01b0\u1edbc, trong ph\u1ea1m vi nghi\u00ean c\u1ee9u c\u1ee7a \u0111\u1ec1 t\u00e0i c\u1ea5p B\u1ed9 th\u00ec vi\u1ec7c \u0111i\u1ec1u tra \u0111\u00e1nh gi\u00e1 th\u1ecb tr\u01b0\u1eddng n\u01b0\u1edbc ngo\u00e0i v\u00e0 nh\u1eefng c\u01a1 ch\u1ebf ch\u00ednh s\u00e1ch li\u00ean quan \u0111\u1ebfn vi\u1ec7c ti\u00eau th\u1ee5 s\u1ea3n ph\u1ea9m thu t\u1eeb c\u00e2y d\u00f3 tr\u1ea7m nhi\u1ec1u h\u1ea1n ch\u1ebf.<\/p>\n<p><b>5)\u00a0\u00a0\u00a0\u00a0 <\/b><b>T\u00e0i li\u1ec7u tham kh\u1ea3o<\/b><\/p>\n<ol>\n<li>L\u00ea V\u0103n Th\u00e0nh (2007): <i>\u0110\u00e1nh gi\u00e1 th\u1ef1c tr\u1ea1ng g\u00e2y tr\u1ed3ng D\u00f3 tr\u1ea7m \u1edf c\u00e1c v\u00f9ng sinh th\u00e1i ch\u00ednh<\/i>. B\u00e1o c\u00e1o chuy\u00ean \u0111\u1ec1 thu\u1ed9c \u0111\u1ec1 t\u00e0i \u201cNghi\u00ean c\u1ee9u \u0111\u00e1nh gi\u00e1 th\u1ef1c tr\u1ea1ng v\u00e0 ph\u00e1t tri\u1ec3n b\u1ec1n v\u1eefng c\u00e2y D\u00f3 tr\u1ea7m <i>Aquilaria <\/i>spp.\u201d, H\u00e0 n\u1ed9i, 2007.<\/li>\n<li>V\u0169 Th\u1ecb Ho\u00e0ng Ph\u01b0\u01a1ng (2009): \u0110\u00e1nh gi\u00e1 th\u1ef1c tr\u1ea1ng kh\u1ea3 n\u0103ng t\u1ea1 tr\u1ea7m b\u1eb1ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u00e1c \u0111\u1ed9ng kh\u00e1c nhau \u0111\u00e3 c\u00f3 trong s\u1ea3n xu\u1ea5t. B\u00e1o c\u00e1o chuy\u00ean \u0111\u1ec1 thu\u1ed9c \u0111\u1ec1 t\u00e0i \u201cNghi\u00ean c\u1ee9u \u0111\u00e1nh gi\u00e1 th\u1ef1c tr\u1ea1ng v\u00e0 ph\u00e1t tri\u1ec3n b\u1ec1n v\u1eefng c\u00e2y D\u00f3 tr\u1ea7m <i>Aquilaria <\/i>spp.\u201d H\u00e0 n\u1ed9i, 2009.<\/li>\n<li>Ph\u1ea1m Ng\u1ecdc Anh, Nguy\u1ec5n M\u1ea1nh H\u00f9ng (2007): Nghi\u00ean c\u1ee9u b\u1ed5 sung m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m sinh th\u00e1i v\u00e0 \u0111i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba g\u00e2y tr\u1ed3ng th\u00edch h\u1ee3p cho c\u00e2y D\u00f3 tr\u1ea7m. B\u00e1o c\u00e1o chuy\u00ean \u0111\u1ec1 thu\u1ed9c \u0111\u1ec1 t\u00e0i \u201cNghi\u00ean c\u1ee9u \u0111\u00e1nh gi\u00e1 th\u1ef1c tr\u1ea1ng v\u00e0 ph\u00e1t tri\u1ec3n b\u1ec1n v\u1eefng c\u00e2y D\u00f3 tr\u1ea7m <i>Aquilaria <\/i>spp.\u201d, H\u00e0 N\u1ed9i, 2007.<\/li>\n<li>Vi\u1ec7n C\u00f4ng nghi\u1ec7p Gi\u1ea5y \u2013 Xenluylo (2010): Ti\u1ec1m n\u0103ng b\u1ed9t gi\u1ea5y t\u1eef g\u1ed7 c\u00e2y D\u00f3 tr\u1ea7m. B\u00e1o c\u00e1o chuy\u00ean \u0111\u1ec1 thu\u1ed9c \u0111\u1ec1 t\u00e0i \u201cNghi\u00ean c\u1ee9u \u0111\u00e1nh gi\u00e1 th\u1ef1c tr\u1ea1ng v\u00e0 ph\u00e1t tri\u1ec3n b\u1ec1n v\u1eefng c\u00e2y D\u00f3 tr\u1ea7m <i>Aquilaria <\/i>spp.\u201d, H\u00e0 n\u1ed9i, 2010.<\/li>\n<li>\u0110\u1ed7 V\u0103n B\u1ea3n v\u00e0 c\u00e1c c\u1ed9ng s\u1ef1 (2009): X\u00e1c \u0111\u1ecbnh t\u00ednh ch\u1ea5t v\u1eadt l\u00fd v\u00e0 c\u01a1 h\u1ecdc g\u1ed7 c\u00e2y D\u00f3 tr\u1ea7m. B\u00e1o c\u00e1o chuy\u00ean \u0111\u1ec1 thu\u1ed9c \u0111\u1ec1 t\u00e0i \u201cNghi\u00ean c\u1ee9u \u0111\u00e1nh gi\u00e1 th\u1ef1c tr\u1ea1ng v\u00e0 ph\u00e1t tri\u1ec3n b\u1ec1n v\u1eefng c\u00e2y D\u00f3 tr\u1ea7m <i>Aquilaria <\/i>spp.\u201d, H\u00e0 N\u1ed9i, 2009.<\/li>\n<li>Nguy\u1ec5n Th\u1ecb Hi\u1ec1n (2009): Nghi\u00ean c\u1ee9u b\u1ed5 sung k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh \u0111\u1ec3 ph\u1ee5c v\u1ee5 c\u00f4ng t\u00e1c c\u1ea3i thi\u1ec7n gi\u1ed1ng theo h\u01b0\u1edbng tinh d\u1ea7u. B\u00e1o c\u00e1o chuy\u00ean \u0111\u1ec1 thu\u1ed9c \u0111\u1ec1 t\u00e0i \u201cNghi\u00ean c\u1ee9u \u0111\u00e1nh gi\u00e1 th\u1ef1c tr\u1ea1ng v\u00e0 ph\u00e1t tri\u1ec3n b\u1ec1n v\u1eefng c\u00e2y D\u00f3 tr\u1ea7m <i>Aquilaria <\/i>spp.\u201d H\u00e0 n\u1ed9i, 2009.<\/li>\n<li>Nguy\u1ec5n Huy S\u01a1n (2009): K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u trao \u0111\u1ed5i kinh nghi\u1ec7m k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng v\u00e0 t\u1ea1o tr\u1ea7m tr\u00ean c\u00e2y D\u00f3 tr\u1ea7m t\u1ea1i Th\u00e1i Lan. B\u00e1o c\u00e1o chuy\u00ean \u0111\u1ec1 thu\u1ed9c \u0111\u1ec1 t\u00e0i \u201cNghi\u00ean c\u1ee9u \u0111\u00e1nh gi\u00e1 th\u1ef1c tr\u1ea1ng v\u00e0 ph\u00e1t tri\u1ec3n b\u1ec1n v\u1eefng c\u00e2y D\u00f3 tr\u1ea7m <i>Aquilaria <\/i>spp.\u201d H\u00e0 n\u1ed9i, 2009.<\/li>\n<li>\u0110\u1ed7 V\u0103n B\u1ea3n (2010): M\u00f4 t\u1ea3 c\u1ea5u t\u1ea1o th\u00f4 \u0111\u1ea1i v\u00e0 hi\u1ec3n vi c\u1ee7a g\u1ed7 c\u00e2y d\u00f3 tr\u1ea7m \u0111\u00e3 t\u00e1c \u0111\u1ed9ng v\u00e0 ch\u01b0a t\u00e1c \u0111\u1ed9ng t\u1ea1o tr\u1ea7m. B\u00e1o c\u00e1o chuy\u00ean \u0111\u1ec1 thu\u1ed9c \u0111\u1ec1 t\u00e0i \u201cNghi\u00ean c\u1ee9u \u0111\u00e1nh gi\u00e1 th\u1ef1c tr\u1ea1ng v\u00e0 ph\u00e1t tri\u1ec3n b\u1ec1n v\u1eefng c\u00e2y D\u00f3 tr\u1ea7m <i>Aquilaria <\/i>spp.\u201d H\u00e0 n\u1ed9i, 2010.<\/li>\n<li>H\u00e0 V\u0103n N\u0103m (2010): Nghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m v\u1eadt h\u1eadu c\u1ee7a c\u00e2y d\u00f3 tr\u1ea7m \u1edf 4 v\u00f9ng sinh th\u00e1i \u0110\u00f4ng B\u1eafc B\u1ed9, B\u1eafc Trung B\u1ed9, Nam Trung B\u1ed9 v\u00e0 T\u00e2y Nam B\u1ed9. B\u00e1o c\u00e1o chuy\u00ean \u0111\u1ec1 thu\u1ed9c \u0111\u1ec1 t\u00e0i \u201cNghi\u00ean c\u1ee9u \u0111\u00e1nh gi\u00e1 th\u1ef1c tr\u1ea1ng v\u00e0 ph\u00e1t tri\u1ec3n b\u1ec1n v\u1eefng c\u00e2y D\u00f3 tr\u1ea7m <i>Aquilaria <\/i>spp.\u201d H\u00e0 N\u1ed9i, 2010.<\/li>\n<\/ol>\n<p>10.Nguy\u1ec5n Xu\u00e2n Qu\u00e1t, Nguy\u1ec5n Huy S\u01a1n, L\u00ea V\u0103n Th\u00e0nh (2009): \u0110\u1eb7c \u0111i\u1ec3m sinh th\u00e1i c\u00e2y D\u00f3 tr\u1ea7m \u1edf Vi\u1ec7t Nam. B\u00e1o c\u00e1o chuy\u00ean \u0111\u1ec1 thu\u1ed9c \u0111\u1ec1 t\u00e0i \u201cNghi\u00ean c\u1ee9u \u0111\u00e1nh gi\u00e1 th\u1ef1c tr\u1ea1ng v\u00e0 ph\u00e1t tri\u1ec3n b\u1ec1n v\u1eefng c\u00e2y D\u00f3 tr\u1ea7m <i>Aquilaria<\/i> spp.\u201d. H\u00e0 N\u1ed9i, 2009.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00a0PGS.TS. Nguy\u1ec5n Huy S\u01a1n TT Nghi\u00ean c\u1ee9u L\u00e2m s\u1ea3n ngo\u00e0i g\u1ed7 1)\u00a0\u00a0\u00a0\u00a0 \u0110\u1eb7t v\u1ea5n \u0111\u1ec1 C\u00e1c lo\u00e0i D\u00f3 c\u00f3 kh\u1ea3 n\u0103ng sinh tr\u1ea7m trong th\u00e2n c\u00e2y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 c\u00e2y D\u00f3 tr\u1ea7m (Aquilarria spp.) hay c\u00e2y Tr\u1ea7m h\u01b0\u01a1ng, m\u1ed9t s\u1ed1 \u0111\u1ecba ph\u01b0\u01a1ng g\u1ecdi l\u00e0 c\u00e2y T\u00f3c, s\u1ea3n ph\u1ea9m th\u01b0\u01a1ng m\u1ea1i th\u1ecb g\u1ecdi l\u00e0 Agarwood, Agar [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[21,72],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/14461"}],"collection":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/comments?post=14461"}],"version-history":[{"count":3,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/14461\/revisions"}],"predecessor-version":[{"id":19142,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/14461\/revisions\/19142"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=14461"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=14461"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=14461"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}