{"id":13370,"date":"2014-08-29T13:59:22","date_gmt":"2014-08-29T06:59:22","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/?p=13370"},"modified":"2019-09-24T15:36:48","modified_gmt":"2019-09-24T08:36:48","slug":"bao-cao-tom-tat-de-tai-nghien-cuu-cac-bien-phap-ky-thuat-gay-trong-cay-ban-dia-da-muc-dich-uoi-scaphium-macropodum-coc-rao-jatropha-curcas","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/bao-cao-tom-tat-de-tai-nghien-cuu-cac-bien-phap-ky-thuat-gay-trong-cay-ban-dia-da-muc-dich-uoi-scaphium-macropodum-coc-rao-jatropha-curcas\/","title":{"rendered":"B\u00e1o c\u00e1o t\u00f3m t\u1eaft \u0111\u1ec1 t\u00e0i: Nghi\u00ean c\u1ee9u c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng c\u00e2y b\u1ea3n \u0111\u1ecba \u0111a m\u1ee5c \u0111\u00edch: \u01af\u01a1i (Scaphium macropodum), C\u1ecdc r\u00e0o (Jatropha curcas)"},"content":{"rendered":"

L\u00ea Qu\u1ed1c Huy<\/em><\/p>\n

Trung t\u00e2m C\u00f4ng ngh\u1ec7 Sinh h\u1ecdc L\u00e2m nghi\u1ec7p<\/em><\/p>\n

1.\u00a0\u00a0\u00a0 GI\u1edaI THI\u1ec6U<\/p>\n

\u01af\u01a1i (Scaphium macropodum<\/i>) v\u00e0 C\u1ecdc r\u00e0o (Jatropha curcas<\/i>) l\u00e0 2 lo\u00e0i c\u00e2y c\u00f3 nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc r\u1ea5t kh\u00e1c bi\u1ec7t, v\u1edbi nh\u1eefng hi\u1ec7n tr\u1ea1ng qu\u1ea3n l\u00fd, ph\u00e1t tri\u1ec3n kh\u00e1c nhau, m\u1ee5c ti\u00eau quan t\u00e2m, nghi\u00ean c\u1ee9u ph\u00e1t tri\u1ec3n r\u1ea5t kh\u00e1c nhau t\u1eeb nhi\u1ec1u kh\u00eda c\u1ea1nh, g\u00f3c \u0111\u1ed9 v\u00e0 t\u1eeb c\u00e1c nh\u00f3m kh\u00e1c nhau. Ch\u00ednh v\u00ec v\u1eady trong nghi\u00ean c\u1ee9u c\u1ee7a \u0110\u1ec1 t\u00e0i ngay t\u1eeb \u0111\u1ea7u \u0111\u00e3 \u0111\u1eb7t ra l\u00e0 ph\u1ea3i c\u00f3 c\u00e1c c\u00e1ch ti\u1ebfp c\u1eadn th\u1ef1c hi\u1ec7n nghi\u00ean c\u1ee9u kh\u00e1c nhau cho 2 lo\u00e0i c\u00e2y n\u00e0y, nh\u1eb1m \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c m\u1ee5c ti\u00eau \u0111\u1ec1 t\u00e0i \u0111\u1eb7t ra.<\/p>\n

\u01af\u01a1i (Scaphium macropodum<\/i>) la\u0300 c\u00e2y g\u00f4\u0303 \u0111a ta\u0301c du\u0323ng, \u01b0a sa\u0301ng, sinh tr\u01b0\u01a1\u0309ng kha\u0301 nhanh, th\u01b0\u01a1\u0300ng ta\u0301i sinh xu\u00e2\u0301t hi\u00ea\u0323n nh\u01b0 c\u00e2y \u201cti\u00ean phong\u201d tr\u00ean ca\u0301c khoa\u0309ng \u201ctr\u00f4\u0301ng\u201d trong ca\u0301c r\u01b0\u0300ng t\u01b0\u0323 nhi\u00ean, \u01a1\u0309 khu ph\u00e2n b\u00f4\u0301. \u0110\u00e2y l\u00e0 lo\u00e0i co\u0301 gia\u0301 tri\u0323 \u01a1\u0309 Vi\u00ea\u0323t Nam, sa\u0309n ph\u00e2\u0309m chu\u0309 y\u00ea\u0301u cu\u0309a c\u00e2y \u01af\u01a1i la\u0300 qua\u0309 ha\u0323t la\u0300m d\u01b0\u01a1\u0323c li\u00ea\u0323u va\u0300 \u0111\u00f4\u0300 u\u00f4\u0301ng b\u00f4\u0309 d\u01b0\u01a1\u0303ng, ngoa\u0300i ra g\u00f4\u0303 co\u0301 th\u00ea\u0309 \u0111\u01b0\u01a1\u0323c s\u01b0\u0309 du\u0323ng cho la\u0300m nha\u0300 ho\u0103\u0323c \u0111o\u0301ng bao go\u0301i va\u0300 \u0111\u00f4\u0300 du\u0300ng \u0111\u01a1n gia\u0309n. Nhi\u00ea\u0300u n\u0103m tr\u01a1\u0309 la\u0323i \u0111\u00e2y, do s\u01b0\u0323 khai tha\u0301c qua\u0309 b\u0103\u0300ng ch\u0103\u0323t pha\u0301, va\u0300 di\u00ea\u0303n ra qua\u0301 m\u01b0\u0301c \u0111a\u0303 d\u00e2\u0303n \u0111\u00ea\u0301n ti\u0300nh tra\u0323ng la\u0300 ca\u0301c qu\u00e2\u0300n th\u00ea\u0309 \u01af\u01a1i t\u01b0\u0323 nhi\u00ean bi\u0323 suy thoa\u0301i nghi\u00eam tro\u0323ng ca\u0309 v\u00ea\u0300 s\u00f4\u0301 l\u01b0\u01a1\u0323ng, di\u00ea\u0323n ti\u0301ch va\u0300 ch\u00e2\u0301t l\u01b0\u01a1\u0323ng. Ha\u0300ng tr\u0103m qu\u00e2\u0300n th\u00ea\u0309 c\u00e2y \u01b0\u01a1i v\u01a1\u0301i ha\u0300ng nghi\u0300n ca\u0301 th\u00ea\u0309 \u0111a\u0303 va\u0300 \u0111ang bi\u0323 ch\u0103\u0323t pha\u0301 \u0111\u00ea\u0309 khai tha\u0301c (khai tha\u0301c tri\u00ea\u0323t), \u0111i\u00ea\u0300u na\u0300y la\u0300m cho loa\u0300i c\u00e2y \u01af\u01a1i \u0111ang \u0111\u01b0\u0301ng tr\u01b0\u01a1\u0301c nguy c\u01a1 bi\u0323 \u0111e do\u0323a va\u0300 \u0111a\u0303 \u0111\u01b0\u01a1\u0323c ghi t\u00ean trong Sa\u0301ch \u0111o\u0309 (Redbook 2007). \u0110\u00ea\u0309 gia\u0309i quy\u00ea\u0301t v\u00e2\u0301n \u0111\u00ea\u0300 suy thoa\u0301i na\u0300y, m\u00f4\u0323t gia\u0309i pha\u0301p b\u00ea\u0300n v\u01b0\u0303ng, c\u00e2n \u0111\u00f4\u0301i gi\u01b0\u0303a ba\u0309o t\u00f4\u0300n va\u0300 s\u01b0\u0309 du\u0323ng pha\u0301t tri\u00ea\u0309n c\u00e2\u0300n pha\u0309i \u0111\u01b0\u01a1\u0323c \u0111\u01b0a ra a\u0301p du\u0323ng.<\/p>\n

Trong b\u1ed1i c\u1ea3nh kh\u1ee7ng ho\u1ea3ng n\u0103ng l\u01b0\u1ee3ng, c\u00e1c v\u1ea5n \u0111\u1ec1 \u00f4 nhi\u1ec5m & m\u00f4i tr\u01b0\u1eddng to\u00e0n c\u1ea7u \u0111ang ng\u00e0y m\u1ed9t ra t\u0103ng, nhi\u1ec1u n\u1ed7 l\u1ef1c \u0111ang t\u1eadp trung nghi\u00ean c\u1ee9u nh\u1eb1m t\u00ecm ra nh\u1eefng n\u0103ng l\u01b0\u1ee3ng m\u1edbi, t\u00e1i t\u1ea1o, s\u1ea1ch h\u01a1n v\u00e0 b\u1ec1n v\u1eefng h\u01a1n, \u0111\u1ec3 d\u1ea7n thay th\u1ebf c\u00e1c ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng h\u00f3a th\u1ea1ch \u0111ang ng\u00e0y c\u00e0ng b\u1ecb c\u1ea1n ki\u1ec7t, trong \u0111\u00f3 d\u1ea7u diesel sinh h\u1ecdc l\u00e0 m\u1ed9t ph\u01b0\u01a1ng \u00e1n r\u1ea5t hi\u1ec7n th\u1ef1c v\u00e0 ti\u1ec1m n\u0103ng. C\u00e2y C\u1ecdc r\u00e0o (Jatropha curcas<\/i>)\u00a0 \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 m\u1ed9t trong c\u00e1c ph\u01b0\u01a1ng \u00e1n nhi\u00ean li\u1ec7u sinh h\u1ecdc ti\u1ec1m n\u0103ng c\u1ee7a con ng\u01b0\u1eddi (Saxena, 2007), Tuy nhi\u00ean, r\u1ea5t nhi\u1ec1u c\u00e1c kh\u00f3 kh\u0103n \u0111ang \u0111\u1ed1i m\u1eb7t c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft \u0111\u1ec3 c\u00e2y Jatropha c\u00f3 th\u1ec3 tr\u1edf th\u00e0nh hi\u1ec7u qu\u1ea3 hi\u1ec7n th\u1ef1c \u0111\u00f3 l\u00e0:<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Jatropha \u0111ang l\u00e0 m\u1ed9t \u201cc\u00e2y hoang d\u1ea1i\u201d, ch\u01b0a c\u00f3 c\u00e1c ngu\u1ed3n gi\u1ed1ng ch\u00ednh th\u1ee9c, ch\u01b0a \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t, n\u00ean c\u00f3 nhi\u1ec1u ngu\u1ed3n h\u1ea1t jatropha ch\u1ea5t l\u01b0\u1ee3ng th\u1ea5p \u0111ang l\u01b0u h\u00e0nh, s\u1ebd r\u1ee7i ro cao n\u1ebfu g\u00e2y tr\u1ed3ng s\u1ea3n xu\u1ea5t \u1ed3 \u1ea1t,<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 N\u0103ng su\u1ea5t h\u1ea1t v\u00e0 h\u00e0m l\u01b0\u1ee3ng d\u1ea7u b\u00e9o ch\u01b0a \u1ed5n \u0111\u1ecbnh, ch\u01b0a cao,<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 bi\u1ebfn d\u1ecb l\u1edbn do th\u1ee5 ph\u1ea5n ch\u00e9o, vai tr\u00f2 c\u1ee7a ki\u1ec3u gen v\u00e0 m\u00f4i tr\u01b0\u1eddng l\u00ean t\u00ednh tr\u1ea1ng ki\u1ec3u h\u00ecnh (NS h\u1ea1t v\u00e0 h\u00e0m l\u01b0\u1ee3ng d\u1ea7u) ch\u01b0a \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Thi\u1ebfu c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng ph\u00f9 h\u1ee3p, hi\u1ec7u qu\u1ea3, thi\u1ebfu c\u00f4ng ngh\u1ec7 ch\u1ebf bi\u1ebfn, \u0111\u1eb7c bi\u1ec7t CN ch\u1ebf bi\u1ebfn c\u00e1c ph\u1ee5 ph\u1ea9m,<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Sinh tr\u01b0\u1edfng \u0111\u01b0\u1ee3c tr\u00ean nhi\u1ec1u lo\u1ea1i \u0111\u1ea5t, nh\u01b0ng \u0111\u1ec3 c\u00f3 hi\u1ec7u qu\u1ea3 kinh t\u1ebf th\u00ec c\u1ea7n ph\u1ea3i \u0111\u1ea7u t\u01b0 th\u00edch \u0111\u00e1ng.<\/p>\n

\u0110\u1ec1 t\u00e0i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u00e0 ti\u1ebfp c\u1eadn th\u1ef1c hi\u1ec7n nh\u1eb1m g\u00f3p ph\u1ea7n gi\u1ea3i quy\u1ebft nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00eau tr\u00ean c\u1ee7a 2 lo\u00e0i c\u00e2y tr\u1ed3ng n\u00e0y.<\/p>\n

2.\u00a0\u00a0\u00a0 \u00a0M\u1ee4C TI\u00caU<\/p>\n

M\u1ee5c ti\u00eau chung:<\/b> B\u1ed5 sung c\u01a1 c\u1ea5u tr\u1ed3ng r\u1eebng c\u00e2y b\u1ea3n \u0111\u1ecba \u0111a m\u1ee5c \u0111\u00edch, hi\u1ec7u qu\u1ea3 cao.<\/p>\n

M\u1ee5c ti\u00eau c\u1ee5 th\u1ec3:<\/b><\/b><\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 X\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c 1- 2 xu\u1ea5t x\u1ee9 cho m\u1ed7i lo\u00e0i \u01af\u01a1i (Scaphium macropodum<\/i>) <\/b>v\u00e0 C\u1ecdc r\u00e0o <\/b>(Jatropha curcas<\/i>) c\u00f3 n\u0103ng su\u1ea5t cao v\u00e0 ph\u00f9 h\u1ee3p cho tr\u1ed3ng r\u1eebng \u1edf Vi\u1ec7t Nam.<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 X\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c ti\u00eau chu\u1ea9n l\u1eadp \u0111\u1ecba th\u00edch h\u1ee3p cho g\u00e2y tr\u1ed3ng r\u1eebng t\u1eebng lo\u00e0i.<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 X\u00e2y d\u1ef1ng h\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng cho t\u1eebng lo\u00e0i.<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 X\u00e2y d\u1ef1ng \u0111\u01b0\u1ee3c m\u00f4 h\u00ecnh th\u00ed nghi\u1ec7m: \u01af\u01a1i (15ha), C\u1ecdc r\u00e0o (20ha).<\/p>\n

3.\u00a0\u00a0 N\u1ed9i dung nghi\u00ean c\u1ee9u<\/h1>\n

C\u00e2y \u01af\u01a1i\u00a0(Scaphium macropodum<\/i>):<\/b><\/b><\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Nghi\u00ean c\u1ee9u x\u00e2y d\u1ef1ng ti\u00eau chu\u1ea9n l\u1eadp \u0111\u1ecba cho g\u00e2y tr\u1ed3ng: \u0110\u00f4ng Nam B\u1ed9, T\u00e2y Nguy\u00ean, B\u1eafc Trung B\u1ed9<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Nghi\u00ean c\u1ee9u \u0111\u1ecbnh l\u01b0\u1ee3ng \u0111\u1eb7c \u0111i\u1ec3m c\u1ea5u tr\u00fac qu\u1ea7n x\u00e3 v\u00e0 \u0111\u1ed9ng th\u00e1i qu\u1ea7n th\u1ec3 \u01af\u01a1i<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Tuy\u1ec3n ch\u1ecdn c\u00e2y tr\u1ed9i v\u00e0 kh\u1ea3o nghi\u1ec7m ch\u1ecdn xu\u1ea5t x\u1ee9 ta\u0323i \u0110\u00f4ng Nam B\u1ed9, T\u00e2y Nguy\u00ean, B\u1eafc Trung B\u1ed9<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Ph\u00e2n t\u00edch \u0111a d\u1ea1ng di truy\u1ec1n c\u1ee7a c\u00e1c qu\u1ea7n th\u1ec3 \u01af\u01a1i<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Nghi\u00ean c\u1ee9u nhu c\u1ea7u \u0111\u1eb7c \u0111i\u1ec3m \u00e1nh s\u00e1ng c\u00e2y \u01af\u01a1i giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m\u00a0: 0- 2 tu\u1ed5i<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Nghi\u00ean c\u1ee9u c\u00e1c bi\u1ec7n ph\u00e1p va\u0300 x\u00e2y d\u01b0\u0323ng h\u01b0\u01a1\u0301ng d\u00e2\u0303n k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng\u00a0: k\u1ef9 thu\u1eadt gieo \u01b0\u01a1m, chi\u00ea\u0301t ghe\u0301p, ph\u01b0\u01a1ng th\u01b0\u0301c tr\u00f4\u0300ng, ch\u0103m so\u0301c bo\u0301n ph\u00e2n,<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 X\u00e2y d\u1ef1ng c\u00e1c m\u00f4 h\u00ecnh th\u00ed nghi\u1ec7m, th\u1eed nghi\u1ec7m c\u00e2y \u01af\u01a1i (15ha) ta\u0323i \u0110\u00f4ng Nam B\u1ed9, T\u00e2y Nguy\u00ean, B\u1eafc Trung B\u1ed9,<\/p>\n

C\u00e2y Co\u0323c ra\u0300o (Jatropha curcas<\/i>)\u00a0:<\/b> <\/b><\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Nghi\u00ean c\u1ee9u x\u00e2y d\u1ef1ng ti\u00eau chu\u1ea9n l\u1eadp \u0111\u1ecba cho g\u00e2y tr\u1ed3ng\u00a0: T\u00e2y Nguy\u00ean, Nam Trung B\u1ed9, B\u1eafc Trung B\u1ed9, T\u00e2y B\u1eafc<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Tuy\u1ec3n ch\u1ecdn c\u00e2y tr\u1ed9i v\u00e0 kh\u1ea3o nghi\u1ec7m ch\u1ecdn xu\u1ea5t x\u1ee9 ta\u0323i T\u00e2y Nguy\u00ean, Nam Trung B\u1ed9, B\u1eafc Trung B\u1ed9, T\u00e2y B\u1eafc<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Ph\u00e2n t\u00edch h\u00e0m l\u01b0\u1ee3ng v\u00e0 th\u00e0nh ph\u1ea7n ch\u1ea5t l\u01b0\u1ee3ng d\u1ea7u b\u00e9o h\u1ea1t C\u1ecdc r\u00e0o c\u1ee7a c\u00e1c c\u00e2y tr\u1ed9i tuy\u1ec3n ch\u1ecdn v\u00e0 xu\u1ea5t x\u1ee9 kh\u1ea3o nghi\u1ec7m<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Ph\u00e2n t\u00edch \u0111a d\u1ea1ng di truy\u1ec1n c\u1ee7a c\u00e1c qu\u1ea7n th\u1ec3 C\u1ecdc r\u00e0o<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Nghi\u00ean c\u1ee9u c\u00e1c bi\u1ec7n ph\u00e1p va\u0300 x\u00e2y d\u01b0\u0323ng h\u01b0\u01a1\u0301ng d\u00e2\u0303n ky\u0303 thu\u00e2\u0323t\u00a0: k\u1ef9 thu\u1eadt gieo \u01b0\u01a1m, nh\u00e2n gi\u00f4\u0301ng b\u0103\u0300ng ha\u0323t, hom, ghe\u0301p, ky\u0303 thu\u00e2\u0323t tr\u00f4\u0300ng, ch\u0103m so\u0301c bo\u0301n ph\u00e2n, ta\u0323o ta\u0301n ca\u0300nh sai qua\u0309, thu ha\u0301i<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 X\u00e2y d\u1ef1ng c\u00e1c m\u00f4 h\u00ecnh th\u00ed nghi\u1ec7m, th\u1eed nghi\u1ec7m C\u1ecdc r\u00e0o (20ha) ta\u0323i T\u00e2y Nguy\u00ean, Nam Trung B\u1ed9, B\u1eafc Trung B\u1ed9, T\u00e2y B\u1eafc<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Nghi\u00ean c\u1ee9u th\u1eed nghi\u1ec7m k\u1ef9 thu\u1eadt \u00e9p, t\u00e1ch chi\u1ebft v\u00e0 tinh ch\u1ebf d\u1ea7u diesel sinh h\u1ecdc t\u1eeb nguy\u00ean li\u1ec7u h\u1ea1t C\u1ecdc r\u00e0o<\/p>\n

4.\u00a0\u00a0 Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u<\/h1>\n

4.1.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b>Ph\u01b0\u01a1ng pha\u0301p \u0111\u00e1nh gi\u00e1 \u0111\u1ea5t \u0111ai, x\u00e2y d\u1ef1ng ti\u00eau chu\u1ea9n l\u1eadp \u0111\u1ecba<\/b><\/b><\/p>\n

L\u1eadp tuy\u1ebfn \u0111i\u1ec1u tra, kh\u1ea3o s\u00e1t \u0111\u00e1nh gi\u00e1 l\u1eadp \u0111\u1ecba:<\/span> k<\/span>h\u1ea3o s\u00e1t \u0111i\u1ec1u tra tuy\u1ebfn, l\u1eadp c\u00e1c \u00f4 ti\u00eau chu\u1ea9n 1000m2<\/sup> (40×25 m); ti\u1ebfn h\u00e0nh quan s\u00e1t, \u0111\u00e1nh gi\u00e1 \u0111\u1ea5t \u0111ai, l\u1eadp \u0111\u1ecba, sinh tr\u01b0\u1edfng, n\u0103ng su\u1ea5t, thu th\u1eadp m\u1eabu v\u00e0 s\u1ed1 li\u1ec7u: \u0110o \u0111\u1ebfm thu th\u1eadp s\u1ed1 li\u1ec7u sinh tr\u01b0\u1edfng n\u0103ng su\u1ea5t th\u1ef1c v\u1eadt li\u00ean quan t\u1edbi l\u1eadp \u0111\u1ecba; m\u00f4 t\u1ea3 c\u00e1c y\u1ebfu t\u1ed1 l\u1eadp \u0111\u1ecba: \u0111\u1ed9 cao, \u0111\u1ed9 d\u1ed1c, h\u01b0\u1edbng ph\u01a1i, th\u1ef1c b\u00ec, \u0111\u00e1 m\u1eb9., ph\u1eabu di\u1ec7n \u0111\u1ea5t v\u00e0 l\u1ea5y m\u1eabu \u0111\u1ea5t ph\u00e2n t\u00edch.<\/p>\n

Ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch \u0111\u1ea5t<\/span>: \u00a0m\u1eabu \u0111\u1ea5t \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch c\u00e1c t\u00ednh ch\u1ea5t l\u00fd, ho\u00e1 h\u1ecdc theo c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ph\u1ed5 bi\u1ebfn \u0111ang \u00e1p d\u1ee5ng t\u1ea1i PTN ph\u00e2n t\u00edch \u0111\u1ea5t, Vi\u1ec7n KHLN Vi\u1ec7t Nam.<\/p>\n

\u00a0\"Uoi<\/a><\/b><\/p>\n

1.1.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b>Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u c\u00e2y \u01af\u01a1i<\/b><\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Nghi\u00ean c\u01b0\u0301u \u0111\u1ecbnh l\u01b0\u1ee3ng <\/i><\/b>Chi\u0309 s\u00f4\u0301 gia\u0301 tri\u0323 quan tro\u0323ng IVI (<\/b>Curtis & Mclntosh 1950; Mishra (1968),<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Nghi\u00ean c\u1ee9u \u0111\u1ed9ng th\u00e1i qu\u1ea7n th\u1ec3 c\u00e2y \u01af\u01a1i (Scaphium macropodum): <\/i><\/b>X\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh ma tr\u1eadn Lefkovitch, ph\u00e2n t\u00edch \u0111\u1ed9ng th\u00e1i ph\u00e1t qu\u1ea7n th\u1ec3 (Caswell 2001):\u00a0 \u03bb>1, qu\u1ea7n th\u1ec3 ph\u00e1t tri\u1ec3n, ng\u01b0\u1ee3c l\u1ea1i\u00a0 \u03bb<1 th\u00ec suy tho\u00e1i.<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0Ph\u01b0\u01a1ng ph\u00e1p kh\u1ea3o s\u00e1t ch\u1ecdn c\u00e2y tr\u1ed9i v\u00e0 kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9<\/i><\/b><\/p>\n

Theo Quy ph\u1ea1m QPN 15-93 v\u00e0 L\u00ea \u0110\u00ecnh Kh\u1ea3 & D\u01b0\u01a1ng M\u1ed9ng H\u00f9ng (2007)<\/p>\n

B\u00f4\u0301 tri\u0301 TN kh\u1ea3o nghi\u1ec7m CRBD, 3-4 l\u0103\u0323p, 3-5 xu\u00e2\u0301t x\u01b0\u0301, 25 c\u00e2y; 4m x 5m (500c\u00e2y\/ha), h\u00f4\u0301: 40 cm x 40 cm x 40 cm. \u0110o \u0111\u00ea\u0301m ty\u0309 l\u00ea\u0323 s\u00f4\u0301ng, sinh tr\u01b0\u01a1\u0309ng (D, H) ca\u0300nh, la\u0301 ha\u0300ng n\u0103m.<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0<\/i><\/b>Ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch \u0111a d\u1ea1ng di truy\u1ec1n qu\u1ea7n th\u1ec3 b\u1eb1ng Chi\u0309 thi\u0323 ph\u00e2n t\u01b0\u0309<\/i><\/b>: <\/i><\/b>5 xu\u00e2\u0301t x\u01b0\u0301\/qu\u00e2\u0300n th\u00ea\u0309; 12 ca\u0301 th\u00ea\u0309 \/qu\u1ea7n th\u1ec3; 18 m\u1ed3i RADP<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0<\/i><\/b>Ph\u01b0\u01a1ng ph\u00e1p<\/i><\/b> NC <\/i><\/b>nhu c\u00e2\u0300u sa\u0301ng va\u0300 \u0111i\u0323nh l\u01b0\u01a1\u0323ng sinh tr\u01b0\u01a1\u0309ng <\/i><\/b>th\u1ef1c v\u1eadt: <\/i><\/b>4 c\u00f4ng th\u1ee9c AS c\u00e2y 0-2 tu\u1ed5i, sinh tr\u01b0\u1edfng D, H t\u1ef7 l\u1ec7 s\u1ed1ng h\u00e0ng th\u00e1ng; \u0111\u1ecbnh l\u01b0\u1ee3ng sinh tr\u01b0\u1edfng RGR theo Hunt v\u00e0 CS. 2001.<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0NC k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng<\/i><\/b>: (i) Ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c nghi\u1ec7m gieo \u01b0\u01a1m , chi\u1ebft gh\u00e9p, SX c\u00e2y con, (ii) Ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng: thu\u1ea7n tr\u00ean tr\u1ed1ng, h\u1ed7n giao v\u1edbi \u0110i\u00ea\u0300u (5:2), tr\u00f4\u0300ng l\u00e0m gi\u00e0u r\u1eebng m\u1edf s\u00e1ng theo b\u0103ng (333c\u00e2y\/ha); NC xa\u0301c \u0111i\u0323nh t\u01b0\u01a1ng quan gi\u01b0\u0303a c\u01b0\u01a1\u0300ng \u0111\u00f4\u0323 \u00e1nh sa\u0301ng v\u01a1\u0301i t\u1ef7 l\u1ec7 sinh tr\u01b0\u01a1\u0309ng (D, H).<\/p>\n

1.2.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b>Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u c\u00e2y C\u1ecdc r\u00e0o (Jatropha curcas<\/i>)<\/b><\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Ph\u01b0\u01a1ng ph\u00e1p kh\u1ea3o s\u00e1t ch\u1ecdn c\u00e2y tr\u1ed9i v\u00e0 kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9<\/i><\/b><\/p>\n

Theo Quy ph\u1ea1m QPN 15-93, v\u00e0 L\u00ea \u0110\u00ecnh Kh\u1ea3 & D\u01b0\u01a1ng M\u1ed9ng H\u00f9ng (2007): ch\u1ecdn c\u00e2y tr\u1ed9i theo ti\u00eau ch\u00ed, \u0111\u00e1nh gi\u00e1 h\u00e0m l\u01b0\u1ee3ng d\u1ea7u b\u00e9o, x\u00e2y d\u1ef1ng v\u01b0\u1eddn t\u1eadp h\u1ee3p (h\u1ea1t, hom) \u0111\u1ec3 SX h\u1ea1t gi\u1ed1ng 1, ch\u1ecdn l\u1ecdc t\u1ec9a th\u01b0a (genetic thinning).<\/p>\n

B\u00f4\u0301 tri\u0301 TN kh\u1ea3o nghi\u1ec7m t\u1ea1i 4 \u0111\u1ecba \u0111i\u1ec3m; CRBD, 4 l\u0103\u0323p, 7-10 xu\u00e2\u0301t x\u01b0\u0301, 25 c\u00e2y; 2 m x 2,5m (2000c\u00e2y\/ha), h\u00f4\u0301: 40 cm x 40 cm x 40 cm; \u0111o \u0111\u00ea\u0301m sinh tr\u01b0\u01a1\u0309ng Dt, H, c\u00e0nh t\u00e1n, NS, s\u00e2u b\u1ec7nh.<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Ph\u00e2n t\u00edch h\u00e0m l\u01b0\u1ee3ng d\u1ea7u b\u00e9o: <\/i><\/b>\u00e9p \u0111\u00f9n v\u00e0 tr\u00edch dung m\u00f4i, c\u00e1c ch\u1ec9 ti\u00eau: h\u00e0m l\u01b0\u1ee3ng v\u00e0 th\u00e0nh ph\u1ea7n acid b\u00e9o, \u0111\u1ed9 acic, nh\u1edbt, t\u1ef7 tr\u1ecdng.<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch \u0111a d\u1ea1ng di truy\u1ec1n qu\u1ea7n th\u1ec3 b\u1eb1ng Chi\u0309 thi\u0323 ph\u00e2n t\u01b0\u0309<\/i><\/b>:\u00a0 1<\/i><\/b>0 xu\u00e2\u0301t x\u01b0\u0301\/qu\u00e2\u0300n th\u00ea\u0309; 8 m\u1ed3i RADP, s\u1eed d\u1ee5ng POPGEN v\u00e0\u00a0 NTSYS cho x\u1eed l\u00fd s\u1ed1 li\u1ec7u<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 NC k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng<\/i><\/b>: (i) Ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c nghi\u1ec7m gieo \u01b0\u01a1m , SX c\u00e2y con, (ii) Ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng: thu\u1ea7n, xen c\u00e2y m\u00f9a v\u1ee5, (iii) B\u00f3n ph\u00e2n 4 c\u00f4ng th\u1ee9c v\u00e0 2 TN b\u00f3n nhi\u1ec5m ch\u1ebf ph\u1ea9m AM , (iv) 5 c\u00f4ng th\u1ee9c TN KT t\u1ea1o t\u00e1n, (v) ph\u00e2n t\u00edch t\u01b0\u01a1ng quan gi\u1eefa NS qu\u1ea3 v\u1edbi SL c\u00e0nh t\u00e1n<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Ph\u01b0\u01a1ng ph\u00e1p k\u1ef9 thu\u1eadt chi\u1ebft \u00e9p d\u1ea7u th\u00f4<\/b>: ki\u1ec3u tr\u1ee5c v\u00edt (Sundhara ho\u1eb7c c\u00f2n g\u1ecdi l\u00e0 Sayari Expeller v\u00e0 ki\u1ec3u Komet \u2013 Komet Expeller) ; k\u1ef9 thu\u1eadt tinh ch\u1ebf d\u1ea7u th\u00f4 th\u00e0nh d\u1ea7u diesel sinh h\u1ecdc<\/b>: ph\u1ea3n \u1ee9ng este h\u00f3a trong m\u00f4i tr\u01b0\u1eddng ki\u1ec1m.<\/p>\n

2.\u00a0\u00a0 K\u1ebft qu\u1ea3 v\u00e0 b\u00e0n lu\u1eadn<\/h1>\n

2.1.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b>C\u00e2y \u01af\u01a1i:<\/b><\/p>\n

5.1.1. X\u00e2y d\u1ef1ng ti\u00eau chu\u1ea9n l\u1eadp \u0111\u1ecba<\/i><\/h5>\n
B\u1ea3ng 1. Ti\u00eau chu\u1ea9n l\u1eadp \u0111\u1ecba \u0111\u00e1nh gi\u00e1 \u0111\u1ed9 th\u00edch h\u1ee3p c\u00e2y tr\u1ed3ng cho tr\u1ed3ng r\u1eebng \u01af\u01a1i t\u1ea1i \u0110\u00f4ng Nam b\u1ed9, T\u00e2y Nguy\u00ean v\u00e0 B\u1eafc Trung b\u1ed9<\/h5>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u0110\u1ed9 th\u00edch h\u1ee3p\u00a0<\/b><\/p>\n

Ti\u00eau ch\u00ed<\/b><\/td>\n

\n

S1<\/p>\n

R\u1ea5t th\u00edch h\u1ee3p<\/p>\n<\/td>\n

\n

S2<\/p>\n

Th\u00edch h\u1ee3p v\u1eeba<\/p>\n<\/td>\n

\n

S3<\/p>\n

\u00cdt th\u00edch h\u1ee3p<\/p>\n<\/td>\n

\n

N<\/p>\n

R\u1ea5t h\u1ea1n ch\u1ebf<\/p>\n<\/td>\n<\/tr>\n

\n

V\u1ec1 y\u1ebfu t\u1ed1 kh\u00ed h\u1eadu<\/h1>\n<\/td>\n<\/tr>\n

\n

Nhi\u1ec7t \u0111\u1ed9 b\u00ecnh qu\u00e2n n\u0103m (0<\/sup>C)<\/h1>\n<\/td>\n

\n

23- 26<\/h1>\n<\/td>\n

\n

10- 23<\/h1>\n<\/td>\n

\n

26- 30<\/h1>\n<\/td>\n

\n

< <\/b>20, <\/b>> 30<\/p>\n<\/td>\n<\/tr>\n

\n

L\u01b0\u1ee3ng m\u01b0a h\u00e0ng n\u0103m (mm)<\/h1>\n<\/td>\n

\n

> 2.000<\/h1>\n<\/td>\n

\n

1.500- 2.000<\/h1>\n<\/td>\n

\n

1.000- 1.500<\/h1>\n<\/td>\n

\n

< 1.000<\/h1>\n<\/td>\n<\/tr>\n

\n

V\u1ec1 y\u1ebfu t\u1ed1 \u0111\u1ecba h\u00ecnh<\/h1>\n<\/td>\n<\/tr>\n

\n

\u0110\u1ed9 cao so v\u1edbi m\u1eb7t bi\u1ec3n (m)<\/h1>\n<\/td>\n

\n

< 300<\/h1>\n<\/td>\n

\n

300- 700<\/h1>\n<\/td>\n

\n

300- 700<\/h1>\n<\/td>\n

\n

> 700<\/h1>\n<\/td>\n<\/tr>\n

\n

\u0110\u1ed9 d\u1ed1c (0<\/sup>)<\/h1>\n<\/td>\n

\n

< 15<\/h1>\n<\/td>\n

\n

15- 25<\/h1>\n<\/td>\n

\n

25- 35<\/h1>\n<\/td>\n

\n

> 35<\/h1>\n<\/td>\n<\/tr>\n

\n

V\u1ec1 y\u1ebfu t\u1ed1 \u0111\u1ea5t \u0111ai<\/h1>\n<\/td>\n<\/tr>\n

\n

Lo\u1ea1i \u0111\u1ea5t<\/h1>\n<\/td>\n

\n

Fk, Fp<\/h1>\n<\/td>\n

\n

Fs, Fp<\/h1>\n<\/td>\n

\n

Fa, X<\/h1>\n<\/td>\n

\n

C, E<\/h1>\n<\/td>\n<\/tr>\n

\n

\u0110\u1ed9 d\u00e0y t\u1ea7ng \u0111\u1ea5t (cm)<\/h1>\n<\/td>\n

\n

> 100<\/h1>\n<\/td>\n

\n

50- 100<\/h1>\n<\/td>\n

\n

30- 50<\/h1>\n<\/td>\n

\n

< 30<\/h1>\n<\/td>\n<\/tr>\n

\n

Th\u1ea3m th\u1ef1c b\u00ec<\/h1>\n<\/td>\n

\n

IIa, IIb<\/h1>\n<\/td>\n

\n

Ic, Ib1<\/h1>\n<\/td>\n

\n

Ib1, Ib2<\/h1>\n<\/td>\n

\n

Ib2, Ia<\/h1>\n<\/td>\n<\/tr>\n

\n

M\u00f9n t\u1ed5ng s\u1ed1 (%)<\/h1>\n<\/td>\n

\n

> 4<\/h1>\n<\/td>\n

\n

3- 4<\/h1>\n<\/td>\n

\n

2- 3<\/h1>\n<\/td>\n

\n

< 2<\/h1>\n<\/td>\n<\/tr>\n

\n

Dung tr\u1ecdng (g\/cm3<\/sup>)<\/h1>\n<\/td>\n

\n

< 1,0<\/h1>\n<\/td>\n

\n

1,0- 1,1<\/h1>\n<\/td>\n

\n

1,1- 1,2<\/h1>\n<\/td>\n

\n

> 1,2<\/h1>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Ghi ch\u00fa: <\/b><\/p>\n\n\n\n
X- \u0110\u1ea5t x\u00e1mFp- \u0110\u1ea5t feralit v\u00e0ng x\u00e1m tr\u00ean ph\u00f9 sa c\u1ed5Fk- \u0110\u1ea5t feralit tr\u00ean \u0111\u00e1 bazan<\/p>\n

Fs- \u0110\u1ea5t feralit \u0111\u1ecf v\u00e0ng tr\u00ean phi\u1ebfn s\u00e9t.<\/p>\n

Fa- \u0110\u1ea5t feralit v\u00e0ng \u0111\u1ecf tr\u00ean \u0111\u00e1 m\u1eafc ma axit\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C- \u0110\u1ea5t c\u00e1t<\/p>\n

E- \u0110\u1ea5t x\u00f3i m\u00f2n tr\u01a1 x\u1ecfi \u0111\u00e1<\/p>\n

Fq- \u0110\u1ea5t feralit v\u00e0ng \u0111\u1ecf tr\u00ean cu\u1ed9i k\u1ebft, sa th\u1ea1ch, sa phi\u1ebfn th\u1ea1ch.<\/td>\n

IIa, IIb- R\u1eebng nonIc- R\u1eebng ph\u1ee5c h\u1ed3i, m\u1eadt \u0111\u1ed9 c\u00e2y g\u1ed7 t\u00e1i sinh > 1000c\u00e2y\/haIb1- \u0110\u1ea5t tr\u1ed1ng, c\u00e2y b\u1ee5i r\u1ea3i m\u1eadt \u0111\u1ed9 c\u00e2y g\u1ed7 t\u00e1i sinh 300- 1000c\u00e2y\/ha<\/p>\n

Ib2- \u0110\u1ea5t tr\u1ed1ng, c\u00e2y b\u1ee5i r\u1ea3i m\u1eadt \u0111\u1ed9 c\u00e2y g\u1ed7 t\u00e1i sinh < 300c\u00e2y\/ha<\/p>\n

Ia- \u0110\u1ea5t tr\u1ed1ng c\u1ecf th\u1ea5p, h\u1ea7u nh\u01b0 kh\u00f4ng c\u00f3 c\u00e2y g\u1ed7 t\u00e1i sinh<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

C\u00e2y \u01af\u01a1i th\u00edch h\u1ee3p sinh tr\u01b0\u1edfng tr\u00ean c\u00e1c lo\u1ea1i \u0111\u1ea5t feralit v\u00e0ng x\u00e1m (Fq), bazan (Fk), v\u00e0ng \u0111\u1ecf tr\u00ean phi\u1ebfn th\u00e1ch s\u00e9t (Fs), \u0111\u1ea5t c\u00f3 th\u00e0nh ph\u1ea7n c\u01a1 gi\u1edbi nh\u1eb9 v\u00e0 trung b\u00ecnh, tho\u00e1t n\u01b0\u1edbc t\u1ed1t<\/p>\n

5.1.2. K\u1ebft qu\u1ea3 ph\u00e2n t\u00edch \u0111\u1ed9ng th\u00e1i ph\u00e1t tri\u1ec3n c\u1ee7a qu\u1ea9n th\u1ec3 \u01af\u01a1i nghi\u00ean c\u1ee9u<\/i><\/b><\/p>\n

K\u1ebft qu\u1ea3 x\u00e2y d\u1ef1ng \u0111\u01b0\u1ee3c m\u00f4 h\u00ecnh Ma tr\u1eadn v\u00e0 ph\u00e2n t\u00edch \u0111\u1ed9ng th\u00e1i ph\u00e1t tri\u1ec3n c\u00e1c qu\u1ea7n th\u1ec3 c\u00e2y \u01af\u01a1i nghi\u00ean c\u1ee9u cho th\u1ea5y qu\u1ea7n th\u1ec3 \u01af\u01a1i t\u1ea1i C\u00e1t Ti\u00ean \u0111ang b\u1ecb suy tho\u00e1i kh\u00e1 nghi\u00eam tr\u1ecdng c\u1ea3 v\u1ec1 s\u1ed1 l\u01b0\u1ee3ng c\u00e1 th\u1ec3 v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng qu\u1ea7n th\u1ec3 (ch\u1ec9 s\u1ed1 ph\u00e1t tri\u1ec3n \u03bb= 0,971, <1), trong khi \u0111\u00f3 qu\u1ea7n th\u1ec3 \u01af\u01a1i t\u1ea1i R\u1eebng \u0111\u1eb7c d\u1ee5ng \u0110\u0103k Uy v\u00e0 VQG B\u1ea1ch M\u00e3 c\u00f3 ch\u1ec9 s\u1ed1 \u03bb >1 (t\u01b0\u01a1ng \u1ee9ng l\u00e0 1,024 v\u00e0 1,088), qu\u1ea7n th\u1ec3 \u0111ang c\u00f3 ph\u00e1t tri\u1ec3n (Caswell 2002).<\/p>\n

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

5.1.3. K\u1ebft qu\u1ea3 \u0111i\u1ec1u tra \u0111\u00e1nh gi\u00e1 ch\u1ecdn c\u00e2y tr\u1ed9i<\/i><\/b><\/i><\/b><\/p>\n

\u0110\u1ec1 t\u00e0i tuy\u1ec3n ch\u1ecdn \u0111\u01b0\u1ee3c 31 c\u00e2y tr\u1ed9i \u01af\u01a1i t\u1eeb 4 qu\u1ea9n th\u1ec3 nghi\u00ean c\u1ee9u, \u0111\u00e1p \u1ee9ng t\u1ed1t c\u00e1c ti\u00eau ch\u00ed tuy\u1ec3n ch\u1ecdn \u0111\u1eb7t ra v\u1ec1 ch\u1ec9 s\u00f4 v\u01b0\u1ee3t tr\u1ed9i sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh v\u00e0 n\u0103ng su\u1ea5t qu\u1ea3.<\/p>\n

B\u1ea3ng 2<\/i>. T\u1ed5ng h\u1ee3p k\u1ebft qu\u1ea3 \u0111i\u1ec1u tra ch\u1ecdn c\u00e2y tr\u1ed9i t\u1eeb c\u00e1c l\u00e2m ph\u00e2n \u01af\u01a1i nghi\u00ean c\u1ee9u<\/i><\/i><\/h5>\n\n\n\n\n\n\n\n\n\n
\n

#<\/b><\/p>\n<\/td>\n

\n

\u0110\u1ecba \u0111i\u1ec3m<\/b><\/p>\n<\/td>\n

\n

S\u1ed1 l\u01b0\u1ee3ng <\/b><\/p>\n<\/td>\n

\n

D1.3<\/sub><\/b><\/p>\n<\/td>\n

\n

Hvn<\/b><\/p>\n<\/td>\n

\n

N\u0103ng su\u1ea5t qu\u1ea3<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

(c\u00e2y tr\u1ed9i)<\/p>\n<\/td>\n

\n

(cm)<\/p>\n<\/td>\n

\n

\u0110\u1ed9 v\u01b0\u1ee3t\u00a0 (%)<\/p>\n<\/td>\n

\n

(m)<\/p>\n<\/td>\n

\n

(Kg)<\/p>\n<\/td>\n

\n

\u0110\u1ed9 v\u01b0\u1ee3t<\/p>\n

(%)<\/p>\n<\/td>\n<\/tr>\n

\n

1<\/p>\n<\/td>\n

\n

C\u00e1t Ti\u00ean<\/p>\n<\/td>\n

\n

8<\/p>\n<\/td>\n

\n

41,1 – 72,9<\/p>\n<\/td>\n

\n

18 – 77<\/p>\n<\/td>\n

\n

17,5 – 34,5<\/p>\n<\/td>\n

\n

45 – 65<\/p>\n<\/td>\n

\n

730 – 1747<\/p>\n<\/td>\n<\/tr>\n

\n

2<\/p>\n<\/td>\n

\n

\u0110\u0103k Uy<\/p>\n<\/td>\n

\n

9<\/p>\n<\/td>\n

\n

25,5 – 51,2<\/p>\n<\/td>\n

\n

24 – 165<\/p>\n<\/td>\n

\n

16,3 – 28,0<\/p>\n<\/td>\n

\n

40 – 60<\/p>\n<\/td>\n

\n

717 – 1397<\/p>\n<\/td>\n<\/tr>\n

\n

3<\/p>\n<\/td>\n

\n

M’drak<\/p>\n<\/td>\n

\n

3<\/p>\n<\/td>\n

\n

45,0 – 64,0<\/p>\n<\/td>\n

\n

21 – 56<\/p>\n<\/td>\n

\n

19,5 – 30,5<\/p>\n<\/td>\n

\n

50 – 60<\/p>\n<\/td>\n

\n

560 – 670<\/p>\n<\/td>\n<\/tr>\n

\n

4<\/p>\n<\/td>\n

\n

B\u1ea1ch M\u00e3<\/p>\n<\/td>\n

\n

11<\/p>\n<\/td>\n

\n

33,0 – 65,9<\/p>\n<\/td>\n

\n

22 – 101<\/p>\n<\/td>\n

\n

16,5 – 35,0<\/p>\n<\/td>\n

\n

35 – 65<\/p>\n<\/td>\n

\n

323 – 1043<\/p>\n<\/td>\n<\/tr>\n

\u00a0<\/b><\/td>\n\n

T\u1ed5ng<\/b><\/p>\n<\/td>\n

\n

31<\/b><\/p>\n<\/td>\n

\n

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

\n

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

\n

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

\n

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

\n

\u00a0<\/b><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

5.1.4. K\u1ebft qu\u1ea3 kh\u1ea3o nghi\u1ec7m ch\u1ecdn xu\u1ea5t x\u1ee9 \u01af\u01a1i<\/i><\/b><\/i><\/b><\/p>\n

K\u1ebft qu\u1ea3 tr\u1ed3ng kh\u1ea3o nghi\u1ec7m c\u00e1c xu\u1ea5t x\u1ee9 \u01af\u01a1i sau 2 n\u0103m cho th\u1ea5y, trong n\u0103m \u0111\u1ea7u c\u00e1c xu\u1ea5t x\u1ee9 c\u00f3 sinh tr\u01b0\u1edfng t\u1ed1t, t\u1ef7 l\u1ec7 s\u1ed1ng cao, tuy nhi\u00ean sang n\u0103m th\u1ee9 2 t\u1ef7 l\u1ec7 ch\u1ebft cao 19-27%, \u0111\u1eb7c bi\u1ec7t l\u00e0 tr\u1ed3ng kh\u1ea3o nghi\u1ec7m tr\u00ean \u0111\u1ea5t tr\u1ed1ng. Nguy\u00ean nh\u00e2n ch\u00ednh l\u00e0 do \u0111i\u1ec1u ki\u1ec7n th\u1eddi ti\u1ebft th\u1ea5t th\u01b0\u1eddng trong n\u0103m 2010 t\u1ea1i V\u0129nh C\u1eedu, \u0110\u1ed3ng Nai v\u00e0 Bu\u00f4n M\u00ea Thu\u1eadt. \u01af\u01a1i l\u00e0 c\u00e2y g\u1ed7, \u0111a m\u1ee5c \u0111\u00edch c\u00f3 chu k\u1ef3 s\u1ed1ng l\u00e2u t\u1edbi nhi\u1ec1u ch\u1ee5c n\u0103m v\u00e0 c\u1ea7n t\u1edbi kho\u1ea3ng 20 n\u0103m t\u1eeb khi tr\u1ed3ng \u0111\u1ec3 ra hoa, k\u1ebft qu\u1ea3, tuy nhi\u00ean \u0110\u1ec1 t\u00e0i \u0111\u00e3 b\u01b0\u1edbc \u0111\u1ea7u \u0111\u00e1nh gi\u00e1, ch\u1ecdn \u0111\u01b0\u1ee3c nh\u1eefng xu\u1ea5t x\u1ee9 c\u00f3 tri\u1ec3n v\u1ecdng sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t. T\u1ea1i hi\u1ec7n tr\u01b0\u1eddng kh\u1ea3o nghi\u1ec7m V\u0129nh C\u1eedu, \u0110\u1ed3ng Nai, xu\u1ea5t x\u1ee9 Tr\u1ea3ng Bom \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 c\u00f3 tri\u1ec3n v\u1ecdng nh\u1ea5t; xu\u1ea5t x\u1ee9 C\u00e1t Ti\u00ean v\u00e0 \u0110\u0103k Uy \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 c\u00f3 sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t t\u1ea1i Etmat, Bu\u00f4n M\u00ea Thu\u1eadt; v\u00e0 xu\u1ea5t x\u1ee9 B\u1ea1ch M\u00e3 v\u00e0 C\u00e1t Ti\u00ean \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 c\u00f3 th\u00edch nghi sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t t\u1ea1i Km9 VQG B\u1ea1ch M\u00e3. C\u00e1c xu\u1ea5t x\u1ee9 kh\u1ea3o nghi\u1ec7m c\u1ea7n \u0111\u01b0\u1ee3c ti\u1ebfp t\u1ee5c theo d\u00f5i t\u1ea1i c\u00e1c hi\u1ec7n tr\u01b0\u1eddng.<\/p>\n

5.1.5. \u1ea2nh h\u01b0\u1edfng \u00e1nh s\u00e1ng \u0111\u1ebfn sinh tr\u01b0\u1edfng chi\u1ec1u cao v\u00e0 \u0111\u01b0\u1eddng k\u00ednh c\u00e2y \u01af\u01a1i 0- 2 tu\u1ed5i<\/i><\/b><\/i><\/b><\/p>\n

Chi\u1ec1u cao (H):<\/span> Trong giai \u0111o\u1ea1n n\u00e0y c\u00f4ng th\u1ee9c \u00e1nh s\u00e1ng 25% th\u1ec3 hi\u1ec7n sinh tr\u01b0\u1edfng t\u1ed1t h\u01a1n v\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c sinh tr\u01b0\u1edfng chi\u1ec1u cao trung b\u00ecnh cao nh\u1ea5t 22,93 cm, kh\u00e1c bi\u1ec7t \u00fd ngh\u0129a so v\u1edbi c\u00e1c c\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m \u00e1nh s\u00e1ng kh\u00e1c (12,5 %, 50% v\u00e0 100%) sau 7 th\u00e1ng th\u00ed nghi\u1ec7m (\u03b1=0.05) (B\u1ea3ng 3). Nh\u01b0 v\u1eady trong giai \u0111o\u1ea1n n\u00e0y, c\u00e2y con \u01af\u01a1i c\u1ea7n c\u00f3 m\u1ed9t ch\u1ebf \u0111\u1ed9 \u00e1nh s\u00e1ng th\u00edch h\u1ee3p kho\u1ea3ng 25-30 % \u0111\u1ec3 \u0111\u1ea1t sinh tr\u01b0\u1edfng ph\u00e1t tri\u1ec3n t\u1ed1t nh\u1ea5t.<\/p>\n

Sang giai \u0111o\u1ea1n 2, t\u1eeb th\u00e1ng th\u00ed nghi\u1ec7m th\u1ee9 8 (11-21 th\u00e1ng tu\u1ed5i) tr\u1edf \u0111i, c\u00e2y \u01af\u01a1i c\u00f3 c\u1ea7n nhi\u1ec1u \u00e1nh s\u00e1ng h\u01a1n \u0111\u1ec3 sinh tr\u01b0\u1edfng ph\u00e1t tri\u1ec3n, \u00e1nh s\u00e1ng th\u00edch h\u1ee3p cho sinh tr\u01b0\u1edfng ph\u00e1t tri\u1ec3n giai \u0111o\u1ea1n n\u00e0y l\u00e0 50-60 %.<\/p>\n

B\u1ea3ng 3. Sinh tr\u01b0\u1edfng chi\u1ec1u cao (cm) \u01af\u01a1i (0- 2 tu\u1ed5i) d\u01b0\u1edbi c\u00e1c ch\u1ebf \u0111\u1ed9 \u00e1nh s\u00e1ng TN kh\u00e1c nhau<\/h5>\n
\n\n\n\n\n\n\n\n\n
\n

C\u00f4ng th\u1ee9c<\/b><\/p>\n<\/td>\n

\n

Th\u1eddi gian th\u00ed nghi\u1ec7m (th\u00e1ng)<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

0 (3t)<\/b><\/p>\n<\/td>\n

\n

1(4t)<\/b><\/p>\n<\/td>\n

\n

2 (5t)<\/b><\/p>\n<\/td>\n

\n

4(7t)<\/b><\/p>\n<\/td>\n

\n

7(10t)<\/b><\/p>\n<\/td>\n

\n

10(13t)<\/b><\/p>\n<\/td>\n

\n

13(16t)<\/b><\/p>\n<\/td>\n

\n

16(19t)<\/b><\/p>\n<\/td>\n

\n

19(21t)<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

12,5%<\/b><\/p>\n<\/td>\n

\n

12.1<\/p>\n<\/td>\n

\n

14.1 a<\/sup><\/p>\n<\/td>\n

\n

15.57 a<\/sup><\/p>\n<\/td>\n

\n

18.97 a<\/sup><\/p>\n<\/td>\n

\n

20.88b<\/sup><\/p>\n<\/td>\n

\n

26.70c<\/sup><\/p>\n<\/td>\n

\n

33.57 d<\/sup><\/p>\n<\/td>\n

\n

35.37 d<\/sup><\/p>\n<\/td>\n

\n

37.17 d<\/sup><\/p>\n<\/td>\n<\/tr>\n

\n

25%<\/b><\/p>\n<\/td>\n

\n

12.1<\/p>\n<\/td>\n

\n

14.0 a<\/sup><\/p>\n<\/td>\n

\n

15.41 a<\/sup><\/p>\n<\/td>\n

\n

19.83 a<\/sup><\/p>\n<\/td>\n

\n

22.93a<\/sup><\/p>\n<\/td>\n

\n

35.48 b<\/sup><\/p>\n<\/td>\n

\n

51.37 c<\/sup><\/p>\n<\/td>\n

\n

56.52 c<\/sup><\/p>\n<\/td>\n

\n

61.05 c<\/sup><\/p>\n<\/td>\n<\/tr>\n

\n

50%<\/b><\/p>\n<\/td>\n

\n

12.2<\/p>\n<\/td>\n

\n

13.5 b<\/sup><\/p>\n<\/td>\n

\n

15.17 b<\/sup><\/p>\n<\/td>\n

\n

17.82 a<\/sup><\/p>\n<\/td>\n

\n

21.03ba<\/sup><\/p>\n<\/td>\n

\n

41.45 a<\/sup><\/p>\n<\/td>\n

\n

72.12 a<\/sup><\/p>\n<\/td>\n

\n

81.46 a<\/sup><\/p>\n<\/td>\n

\n

91.22 a<\/sup><\/p>\n<\/td>\n<\/tr>\n

\n

100%<\/b><\/p>\n<\/td>\n

\n

12.1<\/p>\n<\/td>\n

\n

13.4 b<\/sup><\/p>\n<\/td>\n

\n

15.19 b<\/sup><\/p>\n<\/td>\n

\n

17.40 a<\/sup><\/p>\n<\/td>\n

\n

20.10b<\/sup><\/p>\n<\/td>\n

\n

36.35b<\/sup><\/p>\n<\/td>\n

\n

64.41 b<\/sup><\/p>\n<\/td>\n

\n

74.08 b<\/sup><\/p>\n<\/td>\n

\n

86.43 b<\/sup><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Post Hoc Multiple Comparison Test: <\/span><\/i>\u00a0<\/i>\u00a0Trong c\u00f9ng m\u1ed9t c\u1ed9t, s\u1ed1 li\u1ec7u (c\u00f4ng th\u1ee9c) c\u00f3 1 ch\u1eef c\u00e1i gi\u1ed1ng nhau l\u00e0 kh\u00e1c bi\u1ec7t kh\u00f4ng \u00fd ngh\u0129a v\u1edbi \u03b1=0.05 (t\u1ee9c l\u00e0 p > 0.05).<\/p>\n

\u0110\u01b0\u1eddng k\u00ednh (D):<\/span> \u1ea3nh h\u01b0\u1edfng sinh tr\u01b0\u1edfng chi\u1ec1u cao c\u00e2y; trong giai \u0111o\u1ea1n \u0111\u1ea7u, \u1ea3nh h\u01b0\u1edfng c\u1ee7a c\u00e1c ch\u1ebf \u0111\u1ed9 \u00e1nh s\u00e1ng th\u00ed nghi\u1ec7m \u0111\u1ebfn sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh ch\u01b0a r\u00f5 r\u1ec7t cho \u0111\u1ebfn th\u00e1ng th\u00ed nghi\u1ec7m th\u1ee9 7. C\u00f4ng th\u1ee9c \u00e1nh s\u00e1ng 50 % v\u00e0 100 % c\u00f3 t\u1ef7 l\u1ec7 sinh tr\u01b0\u1edfng cao nh\u1ea5t v\u00e0 kh\u00e1c bi\u1ec7t \u00fd ngh\u0129a so v\u1edbi c\u00e1c c\u00f4ng th\u1ee9c \u00e1nh s\u00e1ng kh\u00e1c (\u03b1=0,05), C\u00f4ng th\u1ee9c \u00e1nh s\u00e1ng 12,5 % c\u00f3 sinh tr\u01b0\u1edfng c\u1ee7a \u01af\u01a1i th\u1ea5p nh\u1ea5t. T\u01b0\u01a1ng t\u1ef1 nhu sinh tr\u01b0\u1edfng chi\u1ec1u cao, giai \u0111o\u1ea1n mu\u1ed9n h\u01a1n (8-21 th\u00e1ng tu\u1ed5i), c\u00e2y con \u01af\u01a1i c\u1ea7n nhi\u1ec1u \u00e1nh s\u00e1ng h\u01a1n \u0111\u1ec3 sinh tr\u01b0\u1edfng ph\u00e1t tri\u1ec3n \u0111\u01b0\u1eddng k\u00ednh.<\/p>\n

5.1.6. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng \u01af\u01a1i<\/i><\/b><\/p>\n

Ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng thu\u1ea7n c\u00e1c m\u1eadt \u0111\u1ed9 tr\u00ean \u0111\u1ea5t tr\u1ed1ng b\u1eb1ng ph\u1eb3ng c\u00f3 t\u1ef7 l\u1ec7 sinh tr\u01b0\u1edfng n\u0103m 1 t\u1ed1t , tuy nhi\u00ean sang n\u0103m th\u1ee9 2, do \u0111i\u1ec1u ki\u1ec7n th\u1eddi ti\u1ebft th\u1ea5t th\u01b0\u1eddng, n\u00ean t\u1ef7 l\u1ec7 c\u00e2y ch\u1ebft cao t\u1edbi 19-27 %. Ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng xen c\u00e2y \u0110i\u1ec1u t\u1ea1i Bu\u00f4n Ma Thu\u1eadt v\u00e0 tr\u1ed3ng l\u00e0m gi\u00e0u r\u1eebng t\u1ea1i Km9 VQG B\u1ea1ch M\u00e3 c\u00f3 t\u1ef7 l\u1ec7 sinh tr\u01b0\u1edfng n\u0103m 1 v\u00e0 2 th\u1ea5p h\u01a1n, nh\u01b0ng t\u1ef7 l\u1ec7 s\u1ed1ng cao h\u01a1n nhi\u1ec1u v\u00e0 c\u00e2y tr\u1ed3ng ph\u00e1t tri\u1ec3n \u1ed5n \u0111\u1ecbnh h\u01a1n so v\u1edbi ph\u01b0\u01a1ng th\u1ee9c tr\u00ean. \u0110\u1ed1i v\u1edbi \u01af\u01a1i, \u0111\u00e2y l\u00e0 2 ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng ph\u00f9 h\u1ee3p.<\/p>\n

Ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng l\u00e0m gi\u00e0u r\u1eebng c\u00e2y \u01af\u01a1i b\u1eb1ng m\u1edf s\u00e1ng theo b\u0103ng (ch\u1eb7t 3 m \u2013 ch\u1eeba 3 m, 40,2 % \u00e1nh s\u00e1ng) c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng, sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh, chi\u1ec1u cao, s\u1ed1 l\u00e1 v\u00e0 di\u1ec7n t\u00edch l\u00e1 cao nh\u1ea5t so v\u1edbi so v\u1edbi c\u00e1c c\u00f4ng th\u1ee9c m\u1edf s\u00e1ng kh\u00e1c; c\u00e1c c\u00f4ng th\u1ee9c b\u00f3n ph\u00e2n c\u00f3 t\u00e1c d\u1ee5ng t\u0103ng sinh tr\u01b0\u1edfng r\u00f5 r\u1ec7t so v\u1edbi \u0111\u1ed1i ch\u1ee9ng kh\u00f4ng b\u00f3n, tuy nhi\u00ean, kh\u00f4ng c\u00f3 \u00fd ngh\u0129a kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c c\u00f4ng th\u1ee9c b\u00f3n v\u1ec1 sinh tr\u01b0\u1edfng v\u00e0 t\u1ef7 l\u1ec7 s\u1ed1ng.<\/p>\n

\u0110\u1ec1 t\u00e0i \u0111\u00e3 x\u00e2y d\u1ef1ng \u0111\u01b0\u1ee3c t\u1ed5ng c\u1ed9ng 15 ha m\u00f4 h\u00ecnh tr\u1ed3ng c\u00e1c th\u00ed nghi\u1ec7m v\u00e0 kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9 t\u1ea1i V\u0129nh C\u1eedu (\u0110\u1ed3ng Nai), Bu\u00f4n M\u00ea Thu\u1eadt (\u0110\u0103k L\u1eafc), Iagrai (Gia Lai) v\u00e0 VQG B\u1ea1ch M\u00e3 (Hu\u1ebf).<\/p>\n

2.2.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b>C\u00e2y C\u1ecdc r\u00e0o<\/b><\/p>\n

5.2.1. X\u00e2y d\u1ef1ng ti\u00eau chu\u1ea9n l\u1eadp \u0111\u1ecba:<\/i><\/h5>\n
B\u1ea3ng<\/i> 4. Ti\u00eau chu\u1ea9n \u0111\u00e1nh \u0111\u1ed9 th\u00edch h\u1ee3p c\u00e2y tr\u1ed3ng C\u1ecdc r\u00e0o t\u1ea1i v\u00f9ng T\u00e2y Nguy\u00ean, Nam Trung B\u1ed9, B\u1eafc Trung B\u1ed9 v\u00e0 T\u00e2y B\u1eafc<\/i><\/i><\/h5>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u0110\u1ed9 th\u00edch h\u1ee3p<\/h1>\n

Ti\u00eau ch\u00ed<\/b><\/td>\n

\n

S1<\/h1>\n

R\u1ea5t th\u00edch h\u1ee3p<\/p>\n<\/td>\n

\n

S2<\/h1>\n

Th\u00edch h\u1ee3p v\u1eeba<\/p>\n<\/td>\n

\n

S3<\/h1>\n

\u00cdt th\u00edch h\u1ee3p<\/p>\n<\/td>\n

\n

N<\/h1>\n

Kh\u00f4ng th\u00edch h\u1ee3p<\/p>\n<\/td>\n<\/tr>\n

\n

V\u1ec1 y\u1ebfu t\u1ed1 kh\u00ed h\u1eadu<\/h1>\n<\/td>\n<\/tr>\n

\n

Nhi\u1ec7t \u0111\u1ed9 b\u00ecnh qu\u00e2n n\u0103m (0<\/sup>C)<\/h1>\n<\/td>\n

\n

24- 26<\/h1>\n<\/td>\n

\n

26-28; 20-24<\/h1>\n<\/td>\n

\n

18-20; 28-30<\/h1>\n<\/td>\n

\n

< 18<\/p>\n

> 30<\/p>\n<\/td>\n<\/tr>\n

\n

L\u01b0\u1ee3ng m\u01b0a h\u00e0ng n\u0103m (mm)<\/h1>\n<\/td>\n

\n

1000- 2000<\/h1>\n<\/td>\n

\n

600-1000<\/h1>\n

2000-2500<\/h1>\n<\/td>\n

\n

2500 -3000<\/h1>\n

400-600<\/h1>\n<\/td>\n

\n

> 3000<\/p>\n

<4300<\/p>\n<\/td>\n<\/tr>\n

\n

S\u1ed1 ng\u00e0y n\u1eafng\/n\u0103m<\/h1>\n<\/td>\n

\n

>240<\/h1>\n<\/td>\n

\n

200-240<\/h1>\n<\/td>\n

\n

150-200<\/h1>\n<\/td>\n

\n

<150<\/p>\n<\/td>\n<\/tr>\n

\n

S\u1ed1 th\u00e1ng kh\u00f4 h\u1ea1n\u00a0\u00a0 (< 100mm)<\/h1>\n<\/td>\n

\n

4- 5<\/h1>\n<\/td>\n

\n

5- 6<\/h1>\n<\/td>\n

\n

6- 8<\/h1>\n<\/td>\n

\n

> 8<\/p>\n<\/td>\n<\/tr>\n

\n

V\u1ec1 y\u1ebfu t\u1ed1 \u0111\u1ecba h\u00ecnh<\/h1>\n<\/td>\n<\/tr>\n

\n

\u0110\u1ed9 cao so v\u1edbi m\u1eb7t n\u01b0\u1edbc bi\u1ec3n (m)<\/h1>\n<\/td>\n

\n

< 300<\/h1>\n<\/td>\n

\n

300- 500<\/h1>\n<\/td>\n

\n

500- 700<\/h1>\n<\/td>\n

\n

> 700<\/h1>\n<\/td>\n<\/tr>\n

\n

\u0110\u1ed9 d\u1ed1c (0<\/sup>)<\/h1>\n<\/td>\n

\n

< 10<\/h1>\n<\/td>\n

\n

10-15<\/h1>\n<\/td>\n

\n

15-25<\/h1>\n<\/td>\n

\n

> 25<\/h1>\n<\/td>\n<\/tr>\n

\n

V\u1ec1 y\u1ebfu t\u1ed1 \u0111\u1ea5t \u0111ai<\/h1>\n<\/td>\n<\/tr>\n

\n

Lo\u1ea1i \u0111\u1ea5t<\/h1>\n<\/td>\n

\n

R,Fa, Fq,<\/h1>\n<\/td>\n

\n

Fp, Fs, C\u0111, Fk*,<\/h1>\n<\/td>\n

\n

Cv<\/h1>\n<\/td>\n

\n

E, Cc, C, Xg<\/h1>\n<\/td>\n<\/tr>\n

\n

\u0110\u1ed9 d\u00e0y t\u1ea7ng \u0111\u1ea5t (cm)<\/h1>\n<\/td>\n

\n

> 70<\/h1>\n<\/td>\n

\n

50- 70<\/h1>\n<\/td>\n

\n

30- 50<\/h1>\n<\/td>\n

\n

< 30<\/h1>\n<\/td>\n<\/tr>\n

\n

Th\u1ea3m th\u1ef1c b\u00ec<\/h1>\n<\/td>\n

\n

Ia, Ib,<\/h1>\n<\/td>\n

\n

Ia, Ib<\/h1>\n<\/td>\n

\n

Ia, Ib, Ic<\/h1>\n<\/td>\n

\n

>Ic<\/h1>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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

Ghi ch\u00fa: <\/b><\/p>\n

Fk- \u0110\u1ea5t n\u00e2u \u0111\u1ecf tr\u00ean \u0111\u00e1 macma baz\u01a1 v\u00e0 trung b\u00ecnh\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Fa- \u0110\u1ea5t v\u00e0ng \u0111\u1ecf tr\u00ean \u0111\u00e1 macma axit<\/p>\n

Fq- \u0110\u1ea5t v\u00e0ng nh\u1ea1t tr\u00ean \u0111\u00e1 c\u00e1t.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Fs- \u0110\u1ea5t \u0111\u1ecf v\u00e0ng tr\u00ean \u0111\u00e1 s\u00e9t<\/p>\n

Fp- \u0110\u1ea5t n\u00e2u v\u00e0ng tr\u00ean ph\u00f9 sa c\u1ed5\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Fl- \u0110\u1ea5t \u0111\u1ecf v\u00e0ng bi\u1ebfn \u0111\u1ed5i do tr\u1ed3ng l\u00faa n\u01b0\u1edbc<\/p>\n

Xg- \u0110\u1ea5t x\u00e1m gl\u00e2y\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0R- \u0110\u1ea5t \u0111en tr\u00ean \u0111\u00e1 Tuf v\u00e0 tro n\u00fai l\u1eeda<\/p>\n

D- \u0110\u1ea5t thung l\u0169ng do s\u1ea3n ph\u1ea9m d\u1ed1c t\u1ee5\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 M- \u0110\u1ea5t m\u1eb7n<\/p>\n

E- \u0110\u1ea5t x\u00f3i m\u00f2n tr\u01a1 x\u1ecfi \u0111\u00e1\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Fk*- \u0110\u1ea5t bazan tho\u00e1i h\u00f3a<\/p>\n

C\u0111- \u0110\u1ea5t c\u00e1t \u0111\u1ecf\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Cv- \u0110\u1ea5t c\u1ed3n c\u00e1t v\u00e0ng<\/p>\n

Cc- \u0110\u1ea5t c\u1ed3n c\u00e1t tr\u1eafng\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C- \u0110\u1ea5t c\u00e1t bi\u1ec3n di \u0111\u1ed9ng<\/p>\n

Ib1- \u0110\u1ea5t tr\u1ed1ng, c\u00e2y b\u1ee5i r\u1ea3i m\u1eadt \u0111\u1ed9 c\u00e2y g\u1ed7 t\u00e1i sinh 300- 500c\u00e2y\/ha<\/p>\n

Ib2- \u0110\u1ea5t tr\u1ed1ng, c\u00e2y b\u1ee5i r\u1ea3i m\u1eadt \u0111\u1ed9 c\u00e2y g\u1ed7 t\u00e1i sinh < 300c\u00e2y\/ha<\/p>\n

Ia- \u0110\u1ea5t tr\u1ed1ng c\u1ecf th\u1ea5p, c\u1ecf l\u00f4ng l\u1ee3n, kh\u00f4ng c\u00f3 c\u00e2y g\u1ed7 t\u00e1i sinh<\/p>\n

Lo\u1ea1i \u0111\u1ea5t tr\u1ed3ng ph\u00f9 h\u1ee3p nh\u1ea5t cho c\u00e2y C\u1ecdc r\u00e0o Jatropha t\u1ea1i c\u00e1c v\u00f9ng nghi\u00ean c\u1ee9u l\u00e0 \u0111\u00e2\u0301t feralit v\u00e0ng \u0111\u1ecf (Fa), v\u00e0ng nh\u1ea1t (Fq), \u0111\u1ecf v\u00e0ng (Fs), \u0111\u1ea5t \u0111en tr\u00ean \u0111\u00e1 tuf (R), \u0111\u1ea5t bazan tho\u00e1i\u00a0 h\u00f3a (Fk*) v\u00e0 \u0111\u1ea5t c\u00e1t \u0111\u1ecf c\u1ed1 \u0111\u1ecbnh (C\u0111); \u01b0a \u0111\u1ea5t tha\u0300nh ph\u00e2\u0300n c\u01a1 gi\u01a1\u0301i nhe\u0323, thoa\u0301t n\u01b0\u01a1\u0301c t\u00f4\u0301t, pH \u0111\u1ea5t 4,0-6,0.<\/p>\n

5.2.2. K\u1ebft qu\u1ea3 ch\u1ecdn c\u00e2y tr\u1ed9i v\u00e0 kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9<\/i><\/h5>\n

\u0110\u1ec1 t\u00e0i \u0111\u00e3 tuy\u1ec3n ch\u1ecdn \u0111\u01b0\u1ee3c 54 c\u00e2y tr\u1ed9i C\u1ecdc r\u00e0o t\u1eeb c\u00e1c qu\u1ea7n th\u1ec3 t\u1ef1 nhi\u00ean hoang d\u1ea1i t\u1ea1i c\u00e1c v\u00f9ng nghi\u00ean c\u1ee9u kh\u00e1c nhau, tuy nhi\u00ean n\u0103ng su\u1ea5t h\u1ea1t v\u00e0 h\u00e0m l\u01b0\u1ee3ng d\u1ea7u b\u00e9o c\u1ee7a c\u00e1c c\u00e2y tr\u1ed9i c\u00f3 sai kh\u00e1c, bi\u1ebfn \u0111\u1ed9ng l\u1edbn (2.1-5.0kg h\u1ea1t\/c\u00e2y v\u00e0 16,7 -39,5 % d\u1ea7u trong h\u1ea1t); b\u00ean c\u1ea1nh \u0111\u00f3 t\u00ednh tr\u1ea1ng n\u0103ng su\u1ea5t h\u1ea1t v\u00e0 h\u00e0m l\u01b0\u1ee3ng d\u1ea7u cao th\u01b0\u1eddng kh\u00f4ng xu\u1ea5t hi\u1ec7n tr\u00ean c\u00f9ng 1 c\u00e2y. \u0110\u1ec1 t\u00e0i c\u0169ng \u0111\u00e3 tuy\u1ec3n ch\u1ecdn \u0111\u01b0\u1ee3c 85 c\u00e2y tr\u1ed9i t\u1eeb c\u00e1c qu\u1ea7n th\u1ec3 g\u00e2y tr\u1ed3ng 2 n\u0103m tu\u1ed5i t\u1ea1i Ninh ph\u01b0\u1edbc \u0111\u1ea1t \u0111\u01b0\u1ee3c n\u0103ng su\u1ea5t h\u1ea1t 1,1kg-2,74kg\/c\u00e2y. Kh\u00e1c v\u1edbi c\u00e2y tr\u1ed9i t\u1eeb qu\u1ea7n th\u1ec3 hoang d\u1ea1i, c\u00e1c c\u00e2y tr\u1ed9i n\u00e0y \u0111\u1ed3ng th\u1eddi c\u00f3 c\u1ea3 t\u00ednh tr\u1ea1ng n\u0103ng su\u1ea5t qu\u1ea3 v\u00e0 h\u00e0m l\u01b0\u1ee3ng d\u1ea7u b\u00e9o cao (27-41%).<\/p>\n

K\u1ebft qu\u1ea3 tr\u1ed3ng kh\u1ea3o nghi\u00eam xu\u1ea5t x\u1ee9 t\u1ea1i c\u00e1c v\u00f9ng nghi\u00ean c\u1ee9u kh\u00e1c nhau cho th\u1ea5y, c\u00e1c xu\u1ea5t x\u1ee9 C\u1ecdc r\u00e0o c\u00f3 sinh tr\u01b0\u1edfng, t\u1ef7 l\u1ec7 ra hoa, th\u1eddi v\u1ee5 hoa v\u00e0 n\u0103ng su\u1ea5t qu\u1ea3 r\u1ea5t kh\u00e1c nhau, v\u00e0 kh\u00e1c bi\u1ec7t nhi\u1ec1u t\u1eeb v\u00f9ng kh\u1ea3o nghi\u1ec7m n\u00e0y sang v\u00f9ng kh\u00e1c. Th\u00ed nghi\u1ec7m tr\u1ed3ng kh\u1ea3o nghi\u1ec7m c\u00e1c xu\u1ea5t x\u1ee9 C\u1ecdc r\u00e0o t\u1ea1i Ninh Ph\u01b0\u1edbc, Ninh Thu\u1eadn v\u00e0 Bu\u00f4n Ma Thu\u1eadt, \u0110\u1eafc L\u1eafc c\u00f3 sinh tr\u01b0\u1edfng, ph\u00e1t tri\u1ec3n c\u00e0nh, t\u00e1n l\u00e1 t\u1ed1t nh\u1ea5t, nh\u01b0ng t\u1ef7 l\u1ec7 ra hoa v\u00e0 n\u0103ng su\u1ea5t qu\u1ea3 c\u1ee7a kh\u1ea3o nghi\u1ec7m t\u1ea1i Bu\u00f4n M\u00ea Thu\u1eadt l\u1ea1i th\u1ea5p h\u01a1n so v\u1edbi Ninh Ph\u01b0\u1edbc t\u1edbi 3-5 l\u1ea7n. Trong s\u1ed1 c\u00e1c hi\u1ec7n tr\u01b0\u1eddng kh\u1ea3o nghi\u1ec7m, hi\u1ec7n tr\u01b0\u1eddng kh\u1ea3o nghi\u1ec7m t\u1ea1i \u0110i\u1ec7n Bi\u00ean c\u00f3 sinh tr\u01b0\u1edfng, t\u1ef7 l\u1ec7 s\u1ed1ng, ra hoa v\u00e0 n\u0103ng su\u1ea5t qu\u1ea3 th\u1ea5p nh\u1ea5t. S\u00e2u b\u1ec7nh c\u00e2y C\u1ecdc r\u00e0o \u0111\u00e3 xu\u1ea5t hi\u1ec7n nhi\u1ec1u t\u1ea1i c\u00e1c v\u00f9ng kh\u1ea3o nghi\u1ec7m Ninh Ph\u01b0\u1edbc, \u0110\u1ea1i L\u1ea3i v\u00e0 V\u0129nh Linh.<\/p>\n

K\u1ebft qu\u1ea3 tr\u1ed3ng kh\u1ea3o nghi\u00eam c\u00e1c xu\u1ea5t x\u1ee9 Jatropha t\u1ea1i Ninh Ph\u01b0\u1edbc, Ninh Thu\u1eadn cho th\u1ea5y, sau 24 th\u00e1ng tr\u1ed3ng, c\u00e1c xu\u1ea5t x\u1ee9 Th\u00e1i Lan T1, \u1ea4n \u0110\u1ed9 IH, B\u00ecnh Thu\u1eadn BT2 v\u00e0 \u0110\u0103k L\u1eafc \u0110L c\u00f3 sinh tr\u01b0\u1edfng, t\u1ef7 l\u1ec7 ra hoa qu\u1ea3 (95-98%) v\u00e0 n\u0103ng su\u1ea5t h\u1ea1t cao nh\u1ea5t (t\u01b0\u01a1ng \u1ee9ng 1577, 1530, 1560 v\u00e0 1497 kg\/ha\/n\u0103m), h\u00e0m l\u01b0\u1ee3ng d\u1ea7u h\u1ea1t c\u1ee7a c\u00e1c xu\u1ea5t x\u1ee9 n\u00e0y ph\u00e2n t\u00edch t\u1ea1i th\u1eddi \u0111i\u1ec3m 24 th\u00e1ng tu\u1ed5i t\u01b0\u01a1ng \u1ee9ng \u0111\u1ea1t 34%, 33 %, 30 % v\u00e0 32 %. C\u00e1c xu\u1ea5t x\u1ee9 kh\u1ea3o nghi\u1ec7m kh\u00e1c c\u00f3 sinh tr\u01b0\u1edfng r\u1ea5t t\u1ed1t, nh\u01b0ng t\u1ef7 l\u1ec7 hoa v\u00e0 n\u0103ng su\u1ea5t qu\u1ea3 r\u1ea5t th\u1ea5p, th\u1eadm ch\u00ed kh\u00f4ng c\u00f3 qu\u1ea3.<\/p>\n

T\u01b0\u01a1ng t\u1ef1, th\u00ed nghi\u1ec7m tr\u1ed3ng kh\u1ea3o nghi\u1ec7m t\u1ea1i Bu\u00f4n M\u00ea Thu\u1eadt, \u0110\u0103k L\u1eafc sau 24 th\u00e1ng tr\u1ed3ng: xu\u1ea5t x\u1ee9 \u0110L, T1 v\u00e0 MJ0260 c\u00f3 t\u1ef7 l\u1ec7 ra hoa, qu\u1ea3 v\u00e0 n\u0103ng xu\u1ea5t h\u1ea1t cao nh\u1ea5t, t\u01b0\u01a1ng \u1ee9ng l\u00e0 287; 256 v\u00e0 206 kg\/ha\/n\u0103m; tuy nhi\u00ean n\u0103ng su\u1ea5t th\u1ea5p h\u01a1n r\u1ea5t nhi\u1ec1u so v\u1edbi kh\u1ea3o nghi\u1ec7m t\u1ea1i Ninh Ph\u01b0\u1edbc, Ninh Thu\u1eadn. T\u1ea1i \u0111\u00e2y, c\u00f3 r\u1ea5t nhi\u1ec1u c\u00e1c xu\u1ea5t x\u1ee9 kh\u1ea3o nghi\u1ec7m kh\u00e1c c\u00f3 sinh tr\u01b0\u1edfng, h\u00ecnh th\u00e1i c\u00e0nh, t\u00e1n v\u00e0 l\u00e1 r\u1ea5t t\u1ed1t, nh\u01b0ng l\u1ea1i c\u00f3 t\u1ef7 l\u1ec7 hoa, qu\u1ea3 v\u00e0 n\u0103ng su\u1ea5t h\u1ea1t r\u1ea5t th\u1ea5p t\u1ea1i th\u1eddi \u0111i\u1ec3m n\u00e0y v\u00e0 \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 xu\u1ea5t x\u1ee9 kh\u00f4ng tri\u1ec3n v\u1ecdng (IH1, CI, EI, MexJ008, MexJ009, MexJ0262).<\/p>\n

5.2.3. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng<\/i><\/h5>\n

Nghi\u00ean c\u1ee9u x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u01a1c k\u1ef9 thu\u1eadt t\u1ea1o t\u00e1n th\u00edch h\u1ee3p, \u0111\u00fang k\u1ef9 thu\u1eadt, \u0111\u00fang th\u1eddi v\u1ee5 (c\u00f4ng th\u1ee9c TT1.2 v\u00e0 c\u00f4ng th\u1ee9c c\u1eaft t\u1ea1o t\u00e1n li\u00ean t\u1ee5c h\u00e0ng n\u0103m) c\u00f3 t\u00e1c d\u1ee5ng l\u00e0m t\u0103ng s\u1ed1 l\u01b0\u1ee3ng, sinh tr\u01b0\u1edfng, s\u1ee9c s\u1ed1ng c\u00e0nh t\u00e1n v\u00e0 t\u0103ng n\u0103ng su\u1ea5t qu\u1ea3 h\u01a1n t\u1eeb 40-65 % so v\u1edbi c\u00e1c c\u00f4ng th\u1ee9c t\u1ea1o t\u00e1n ch\u01b0a \u0111\u00fang k\u1ef9 thu\u1eadt, kh\u00f4ng \u0111\u00fang th\u1eddi v\u1ee5. C\u00f4ng th\u1ee9c \u0111\u1ed1i ch\u1ee9ng (kh\u00f4ng t\u1ea1o t\u00e1n) c\u00f3 sinh tr\u01b0\u1edfng c\u00e0nh t\u00e1n k\u00e9m, n\u0103ng su\u1ea5t qu\u1ea3 r\u1ea5t th\u1ea5p, th\u1eadm ch\u00ed kh\u00f4ng c\u00f3 n\u0103ng su\u1ea5t; v\u1eady nh\u1ea5t thi\u1ebft c\u1ea7n \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh t\u1ea1i t\u00e1n \u0111\u00fang k\u00fd thu\u1eadt, \u0111\u00fang th\u1eddi v\u1ee5 v\u00e0 th\u01b0\u1eddng xuy\u00ean h\u00e0ng n\u0103m cho c\u00e2y C\u1ecdc r\u00e0o \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o sinh tr\u01b0\u1edfng, l\u00e0m tr\u1ebb h\u00f3a, v\u00e0 \u1ed5n \u0111\u1ecbnh t\u0103ng n\u0103ng su\u1ea5t qu\u1ea3. B\u1eb1ng k\u1ebft qu\u1ea3 ph\u00e2n t\u00edch t\u01b0\u01a1ng quan, \u0111\u1ec1 t\u00e0i \u0111\u00e3 x\u00e1c \u0111inh \u0111\u01b0\u1ee3c m\u1ed9t t\u1ef7 l\u1ec7 th\u00edch h\u1ee3p gi\u1eefa s\u1ed1 l\u01b0\u1ee3ng c\u00e0nh t\u00e1n v\u1edbi k\u00edch th\u01b0\u1edbc \u0111\u01b0\u1eddng k\u00ednh t\u00e1n nh\u1eb1m t\u1ed1i \u01b0u h\u00f3a thu nh\u1eadn \u00e1nh s\u00e1ng, \u0111\u1ea3m b\u1ea3o quang h\u1ee3p v\u00e0 n\u0103ng su\u1ea5t qu\u1ea3 c\u1ee7a m\u1ed7i c\u00e0nh v\u00e0 c\u1ee7a c\u1ea3 t\u00e1n c\u00e2y.<\/p>\n

C\u00e1c c\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m b\u00f3n ph\u00e2n \u0111\u00e3 t\u00e1c d\u1ee5ng r\u00f5 r\u1ec7t t\u1edbi sinh tr\u01b0\u1edfng v\u00e0 n\u0103ng su\u1ea5t qu\u1ea3 c\u1ee7a C\u1ecdc r\u00e0o Jatropha g\u00e2y tr\u1ed3ng tr\u00ean c\u00e1c v\u00f9ng \u0111\u1ea5t c\u00e1t kh\u00f4 c\u1eb1n c\u1ee7a Ninh Ph\u01b0\u1edbc, Ninh Thu\u1eadn, trong \u0111\u00f3 c\u00f4ng th\u1ee9c b\u00f3n ph\u1ed1i tr\u1ed9n 1kg ph\u00e2n h\u1eefu c\u01a1 (ph\u00e2n chu\u1ed3ng hoai) v\u1edbi 100 ph\u00e2n NPK 16:16:8 (CT3) \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1ef7 l\u1ec7 s\u1ed1ng, sinh tr\u01b0\u1edfng v\u00e0 n\u0103ng su\u1ea5t qu\u1ea3 cao nh\u1ea5t, kh\u00e1c bi\u1ec7t \u00fd ngh\u0129a r\u00f5 r\u1ec7t so v\u1edbi \u0111\u1ed1i ch\u1ee9ng (t\u0103ng h\u01a1n 60 %) v\u00e0 c\u00e1c c\u00f4ng th\u1ee9c b\u00f3n ph\u00e2n kh\u00e1c (h\u01a1n t\u1eeb 27-42 %).<\/p>\n

\u00c1p d\u1ee5ng k\u1ef9 thu\u1eadt b\u00f3n nhi\u1ec5m ch\u1ebf ph\u1ea9m n\u1ea5m r\u1ec5 n\u1ed9i c\u1ed9ng sinh AM cho Jatropha tr\u00ean v\u00f9ng \u0111\u1ea5t c\u00e1t kh\u00f4 c\u1eb1n Ninh Ph\u01b0\u1edbc, Ninh Thu\u1eadn l\u00e0m t\u0103ng t\u1ef7 l\u1ec7 c\u00e2y ra hoa, qu\u1ea3 17-25% v\u00e0 t\u0103ng n\u0103ng su\u1ea5t h\u1ea1t 20% \u0111\u1ebfn 35% (so v\u1edbi \u0111\u1ed1i ch\u1ee9ng; p=0,001) trong n\u0103m 1. Trong n\u0103m 2, ph\u1ea3n \u1ee9ng t\u0103ng n\u0103ng su\u1ea5t h\u1ea1t \u0111\u00e3 gi\u1ea3m xu\u1ed1ng c\u00f2n 18-24% so \u0111\u1ed1i ch\u1ee9ng.<\/p>\n

5.2.4. Ph\u00e2n t\u00edch h\u00e0m l\u01b0\u1ee3ng d\u1ea7u b\u00e9o trong h\u1ea1t<\/i><\/h5>\n

C\u00e1c ph\u00e2n t\u00edch h\u00e0m l\u01b0\u1ee3ng d\u1ea7u h\u1ea1t c\u1ee7a c\u00e1c qu\u1ea3 xanh ch\u00edn kh\u00e1c nhau cho th\u1ea5y: qu\u1ea3 ch\u00edn m\u00e0u v\u00e0ng t\u01b0\u01a1i c\u00f3 h\u00e0m l\u01b0\u1ee3ng d\u1ea7u b\u00e9o trong h\u1ea1t cao nh\u1ea5t (A=100%) sau \u0111\u00f3 l\u00e0 qu\u1ea3 ch\u00edn m\u00e0u v\u00e0ng chuy\u1ec3n n\u00e2u v\u00e0 ch\u00edn n\u00e2u c\u00f3 h\u00e0m l\u01b0\u1ee3ng d\u1ea7u h\u1ea1t th\u1ea5p h\u01a1n (91 % v\u00e0 82,9 % so v\u1edbi A); qu\u1ea3 ch\u00edn kh\u00f4 \u0111en v\u00e0 qu\u1ea3 xanh ch\u01b0a ch\u00edn c\u00f3 h\u00e0m l\u01b0\u1ee3ng d\u1ea7u th\u1ea5p nh\u1ea5t (73,9 v\u00e0 70,2 % so v\u1edbi A); qu\u1ea3 xanh \u0111\u1ec3 chuy\u1ec3n m\u00e0u v\u00e0ng sau khi thu h\u00e1i, h\u00e0m l\u01b0\u1ee3ng d\u1ea7u h\u1ea1t t\u0103ng l\u00ean 2,6%.<\/p>\n

5.2.5. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u00e1p d\u1ee5ng th\u1eed nghi\u1ec7m k\u1ef9 thu\u1eadt chi\u1ebft \u00e9p d\u1ea7u th\u00f4 v\u00e0 tinh ch\u1ebf d\u1ea7u diesel sinh h\u1ecdc Jatropha<\/i><\/h5>\n

K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u00e1p d\u1ee5ng th\u1eed nghi\u1ec7m c\u00e1c k\u1ef9 thu\u1eadt chi\u1ebft \u00e9p d\u1ea7u th\u00f4 h\u1ea1t C\u1ecdc r\u00e0o v\u00e0 tinh ch\u1ebf d\u1ea7u diesel sinh h\u1ecdc \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t \u00e9p d\u1ea7u v\u00e0 hi\u1ec7u su\u1ea5t tinh ch\u1ebf h\u01a1n 90 %, s\u1ea3n xu\u1ea5t th\u1eed nghi\u1ec7m \u0111\u01b0\u1ee3c 200 l\u00edt d\u1ea7u diesel sinh h\u1ecdc B100, ph\u00e2n t\u00edch c\u00e1c ch\u1ec9 s\u1ed1 \u0111\u1ea1t c\u00e1c ti\u00eau chu\u1ea9n TCVN v\u00e0 ASTM, \u0111\u1ec1 xu\u1ea5t ch\u1ecdn c\u00f4ng ngh\u1ec7 tinh ch\u1ebf diesel ph\u00f9 h\u1ee3p cho \u0111i\u1ec1u ki\u1ec7n Vi\u1ec7t nam. Tuy nhi\u00ean hi\u1ec7u su\u1ea5t thu h\u1ed3i Metanol v\u00e0 tinh s\u1ea1ch Glycerin c\u00f2n th\u1ea5p, ch\u01b0a c\u00f3 c\u00f4ng ngh\u1ec7 s\u1eed d\u1ee5ng c\u00e1c ph\u1ee5 ph\u1ea9m c\u1ee7a h\u1ea1t C\u1ecdc r\u00e0o.<\/p>\n

3.\u00a0\u00a0 K\u1ebft lu\u1eadn<\/h1>\n

3.1.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b>C\u00e2y \u01af\u01a1i:<\/b><\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Ti\u00eau chu\u1ea9n l\u1eadp \u0111\u1ecba g\u00e2y tr\u1ed3ng x\u00e1c \u0111\u1ecbnh l\u00e0 c\u00e2y \u01af\u01a1i th\u00edch h\u1ee3p sinh tr\u01b0\u1edfng tr\u00ean c\u00e1c lo\u1ea1i \u0111\u1ea5t feralit v\u00e0ng x\u00e1m (Fq), bazan (Fk), v\u00e0ng \u0111\u1ecf tr\u00ean phi\u1ebfn th\u1ea1ch s\u00e9t (Fs), \u0111\u1ea5t c\u00f3 th\u00e0nh ph\u1ea7n c\u01a1 gi\u1edbi nh\u1eb9 v\u00e0 trung b\u00ecnh, tho\u00e1t n\u01b0\u1edbc t\u1ed1t<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Qu\u1ea7n th\u1ec3 \u01af\u01a1i t\u1ea1i C\u00e1t Ti\u00ean \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh l\u00e0 \u0111ang b\u1ecb suy tho\u00e1i kh\u00e1 nghi\u00eam tr\u1ecdng (ch\u1ec9 s\u1ed1 ph\u00e1t tri\u1ec3n \u03bb= 0,971, <1), trong khi \u0111\u00f3 qu\u1ea7n th\u1ec3 \u01af\u01a1i t\u1ea1i R\u1eebng \u0111\u1eb7c d\u1ee5ng \u0110\u0103k Uy v\u00e0 VQG B\u1ea1ch M\u00e3 c\u00f3 ch\u1ec9 s\u1ed1 \u03bb=1,024 v\u00e0 \u03bb=1,088 (>1), qu\u1ea7n th\u1ec3 \u0111ang ph\u00e1t tri\u1ec3n (Caswell 2002).<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Giai \u0111o\u1ea1n s\u1edbm t\u1eeb 1 -10 th\u00e1ng tu\u1ed5i, ch\u1ebf \u0111\u1ed9 \u00e1nh s\u00e1ng t\u1ed1i \u01b0u cho c\u00e2y con \u01b0\u01a1i \u0111\u1ea1t \u0111\u01b0\u1ee3c sinh tr\u01b0\u1edfng cao nh\u1ea5t l\u00e0 25-30%, tuy nhi\u00ean s\u00e1ng giai \u0111o\u1ea1n mu\u1ed9n h\u01a1n t\u1eeb 11-21 th\u00e1ng tu\u1ed5i, ch\u1ebf \u0111\u1ed9 s\u00e1ng t\u1ed1i \u01b0u cho c\u00e2y \u01af\u01a1i \u0111\u1ea1t sinh tr\u01b0\u1edfng cao nh\u1ea5t l\u00e0 50-60%, c\u1ea7n nhi\u1ec1u s\u00e1ng h\u01a1n. Ch\u1ebf \u0111\u1ed9 \u00e1nh s\u00e1ng y\u1ebfu 12,5% c\u00e2y con \u01b0\u01a1i c\u00f3 sinh tr\u01b0\u1edfng k\u00e9m, t\u1ef7 l\u1ec7 ch\u1ebft cao >30-40<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u0110\u1ec1 t\u00e0i \u0111\u00e3 \u0111i\u1ec1u tra tuy\u1ec3n ch\u1ecdn \u0111\u01b0\u1ee3c 31 c\u00e2y tr\u1ed9i t\u1eeb c\u00e1c qu\u1ea7n th\u1ec3 \u01b0\u01a1i t\u1ea1i c\u00e1c v\u00f9ng nghi\u00ean c\u1ee9u<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Xu\u1ea5t x\u1ee9 Tr\u1ea3ng Bom b\u01b0\u1edbc \u0111\u1ea7u \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 c\u00f3 sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng kh\u1ea3o nghi\u1ec7m V\u0129nh C\u1eedu, \u0110\u1ed3ng Nai; xu\u1ea5t x\u1ee9 C\u00e1t Ti\u00ean v\u00e0 \u0110\u0103k Uy \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 c\u00f3 sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t t\u1ea1i Etmat, Bu\u00f4n M\u00ea Thu\u1eadt; v\u00e0 xu\u1ea5t x\u1ee9 B\u1ea1ch M\u00e3 v\u00e0 C\u00e1t Ti\u00ean \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 c\u00f3 th\u00edch nghi sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t t\u1ea1i Km9 VQG B\u1ea1ch M\u00e3.<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Tr\u1ed3ng l\u00e0m gi\u00e0u r\u1eebng \u01af\u01a1i t\u1ea1i Km9 VQG B\u1ea1ch M\u00e3 v\u00e0 tr\u1ed3ng xen (c\u00e2y \u0110i\u1ec1u) t\u1ea1i Etmat, Bu\u00f4n Ma Thu\u1eadt b\u01b0\u1edbc \u0111\u1ea7u ch\u1ee9ng t\u1ecf l\u00e0 ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng ph\u00f9 h\u1ee3p,\u00a0 c\u00f3 sinh tr\u01b0\u1edfng \u1ed5n \u0111\u1ecbnh, t\u1ef7 l\u1ec7 s\u1ed1ng cao, trong khi \u0111\u00f3 ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng \u01af\u01a1i thu\u1ea7n tr\u00ean \u0111\u1ea5t tr\u1ed1ng c\u00f3 t\u1ef7 l\u1ec7 c\u00e2y ch\u1ebft n\u0103m th\u1ee9 2 cao t\u1edbi 19-27 % do t\u00e1c \u0111\u1ed9ng th\u1eddi ti\u1ebft th\u1ea5t th\u01b0\u1eddng. Tr\u1ed3ng l\u00e0m gi\u00e0u r\u1eebng b\u1eb1ng m\u1edf s\u00e1ng theo b\u0103ng (ch\u1eb7t 3 m \u2013 ch\u1eeba 3 m, 40,2 % \u00e1nh s\u00e1ng) b\u01b0\u1edbc \u0111\u1ea7u cho th\u1ea5y t\u1ef7 l\u1ec7 s\u1ed1ng v\u00e0 sinh tr\u01b0\u1edfng cao h\u01a1n so v\u1edbi c\u00e1c c\u00f4ng th\u1ee9c m\u1edf s\u00e1ng kh\u00e1c.<\/p>\n

3.2.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b>C\u00e2y C\u1ecdc r\u00e0o:<\/b><\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u0110\u1ec1 t\u00e0i x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c lo\u1ea1i \u0111\u1ea5t tr\u1ed3ng ph\u00f9 h\u1ee3p nh\u1ea5t cho c\u00e2y C\u1ecdc r\u00e0o Jatropha t\u1ea1i c\u00e1c v\u00f9ng nghi\u00ean c\u1ee9u l\u00e0 \u0111\u00e2\u0301t feralit v\u00e0ng \u0111\u1ecf (Fa), v\u00e0ng nh\u1ea1t (Fq), \u0111\u1ecf v\u00e0ng (Fs), \u0111\u1ea5t \u0111en tr\u00ean \u0111\u00e1 tuf (R), \u0111\u1ea5t bazan tho\u00e1i \u00a0h\u00f3a (Fk*) v\u00e0 \u0111\u1ea5t c\u00e1t \u0111\u1ecf c\u1ed1 \u0111\u1ecbnh (C\u0111); \u01b0a \u0111\u1ea5t tha\u0300nh ph\u00e2\u0300n c\u01a1 gi\u01a1\u0301i nhe\u0323, thoa\u0301t n\u01b0\u01a1\u0301c t\u00f4\u0301t, pH \u0111\u1ea5t 4,0-6,0, co\u0301 \u0111\u00f4\u0323 phi\u0300 trung bi\u0300nh \u0111\u00ea\u0301n nghe\u0300o, t\u00e2\u0300ng \u0111\u00e2\u0301t >30 cm. C\u1ea7n ph\u1ea3i tra\u0301nh \u0111\u1ea5t tru\u0303ng, d\u00ea\u0303 ng\u00e2\u0323p u\u0301ng, kho\u0301 thoa\u0301t n\u01b0\u01a1\u0301c,<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u0110\u1ec1 t\u00e0i tuy\u1ec3n ch\u1ecdn \u0111\u01b0\u1ee3c 54 c\u00e2y tr\u1ed9i C\u1ecdc r\u00e0o t\u1eeb c\u00e1c qu\u1ea7n th\u1ec3 t\u1ef1 nhi\u00ean hoang d\u1ea1i t\u1ea1i c\u00e1c v\u00f9ng nghi\u00ean c\u1ee9u (NS h\u1ea1t 2.1-5.0kg h\u1ea1t\/c\u00e2y v\u00e0 16,7 -39,5 % d\u1ea7u trong h\u1ea1t), t\u00ednh tr\u1ea1ng n\u0103ng su\u1ea5t h\u1ea1t v\u00e0 h\u00e0m l\u01b0\u1ee3ng d\u1ea7u cao th\u01b0\u1eddng kh\u00f4ng xu\u1ea5t hi\u1ec7n tr\u00ean c\u00f9ng 1 c\u00e1 th\u1ec3 c\u00e2y tr\u1ed9i. \u0110\u1ec1 t\u00e0i c\u0169ng tuy\u1ec3n ch\u1ecdn \u0111\u01b0\u1ee3c 85 c\u00e2y tr\u1ed9i t\u1eeb c\u00e1c qu\u1ea7n th\u1ec3 g\u00e2y tr\u1ed3ng 2 n\u0103m tu\u1ed5i t\u1ea1i Ninh ph\u01b0\u1edbc (NS h\u1ea1t 1,1kg-2,74kg\/c\u00e2y), c\u00e1c c\u00e2y tr\u1ed9i n\u00e0y \u0111\u1ed3ng th\u1eddi c\u00f3 c\u1ea3 t\u00ednh tr\u1ea1ng n\u0103ng su\u1ea5t qu\u1ea3 v\u00e0 h\u00e0m l\u01b0\u1ee3ng d\u1ea7u b\u00e9o cao (27-41%).<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9 C\u1ecdc r\u00e0o Jatropha (4 xu\u1ea5t x\u1ee9 b\u1ea3n \u0111\u1ecba v\u00e0 6 nh\u1eadp n\u1ed9i t\u1eeb Th\u00e1i Lan, \u1ea4n \u0110\u1ed9, M\u00eaxico) c\u00f3 sinh tr\u01b0\u1edfng v\u00e0 n\u0103ng su\u1ea5t h\u1ea1t cao nh\u1ea5t t\u1ea1i v\u00f9ng c\u00e1t \u0111\u1ecf Ninh Ph\u01b0\u1edbc, Ninh Thu\u1eadn sau 2 n\u0103m tr\u1ed3ng; c\u00f3 sinh tr\u01b0\u1edfng c\u00e0nh t\u00e1n r\u1ea5t t\u1ed1t t\u1ea1i Etmat, Bu\u00f4n M\u00ea Thu\u1eadt, nh\u01b0ng n\u0103ng su\u1ea5t qu\u1ea3 th\u1ea5p sau 2 n\u0103m tr\u1ed3ng; kh\u1ea3o nghi\u1ec7m t\u1ea1i v\u00f9ng n\u00fai ph\u00eda b\u1eafc, \u0110i\u1ec7n Bi\u00ean c\u00f3 sinh tr\u01b0\u1edfng v\u00e0 n\u0103ng su\u1ea5t h\u1ea1t th\u1ea5p nh\u1ea5t (sau 2 n\u0103m tr\u1ed3ng).<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 K\u1ebft qu\u1ea3 tr\u1ed3ng kh\u1ea3o nghi\u1ec7m t\u1ea1i Ninh Ph\u01b0\u1edbc, Ninh Thu\u1eadn, \u0111\u1ec1 t\u00e0i \u0111\u00e3 \u0111\u00e1nh gi\u00e1 ch\u1ecdn \u0111\u01b0\u1ee3c 4 xu\u1ea5t x\u1ee9 Jatropha c\u00f3 n\u0103ng su\u1ea5t h\u1ea1t & d\u1ea7u b\u00e9o cao sau 24 th\u00e1ng tr\u1ed3ng l\u00e0 T1 (Th\u00e1i Lan), IH1 (\u1ea4n \u0110\u1ed9), BT2 (B\u00ecnh Thu\u1eadn) v\u00e0 \u0110L (\u0110\u0103k L\u1eafc) (NS h\u1ea1t t\u01b0\u01a1ng \u1ee9ng 1577, 1530, 1560 v\u00e0 1497 kg\/ha\/n\u0103m; h\u00e0m l\u01b0\u1ee3ng d\u1ea7u h\u1ea1t t\u01b0\u01a1ng \u1ee9ng 34%, 33 %, 30 % v\u00e0 32 %). C\u00e1c xu\u1ea5t x\u1ee9 kh\u1ea3o nghi\u1ec7m kh\u00e1c c\u00f3 sinh tr\u01b0\u1edfng t\u1ed1t, nh\u01b0ng t\u1ef7 l\u1ec7 hoa v\u00e0 n\u0103ng su\u1ea5t qu\u1ea3 r\u1ea5t th\u1ea5p, th\u1eadm ch\u00ed kh\u00f4ng c\u00f3 qu\u1ea3.<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 K\u1ef9 thu\u1eadt t\u1ea1o t\u00e1n \u0111\u00fang k\u1ef9 thu\u1eadt, \u0111\u00fang th\u1eddi v\u1ee5 (c\u00f4ng th\u1ee9c TT1.2 v\u00e0 c\u00f4ng th\u1ee9c c\u1eaft t\u1ea1o t\u00e1n li\u00ean t\u1ee5c h\u00e0ng n\u0103m) l\u00e0m t\u0103ng n\u0103ng su\u1ea5t qu\u1ea3 h\u01a1n 33-65 % so v\u1edbi c\u00e1c c\u00f4ng th\u1ee9c t\u1ea1o t\u00e1n kh\u00f4ng \u0111\u00fang k\u1ef9 thu\u1eadt, kh\u00f4ng \u0111\u00fang th\u1eddi v\u1ee5. C\u00f4ng th\u1ee9c \u0111\u1ed1i ch\u1ee9ng (kh\u00f4ng t\u1ea1o t\u00e1n) c\u00f3 sinh tr\u01b0\u1edfng c\u00e1nh t\u00e1n k\u00e9m, n\u0103ng su\u1ea5t qu\u1ea3 r\u1ea5t th\u1ea5p, th\u1eadm ch\u00ed kh\u00f4ng c\u00f3 n\u0103ng su\u1ea5t.<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Tr\u00ean v\u00f9ng \u0111\u1ea5t c\u00e1t Ninh Ph\u01b0\u1edbc, Ninh Thu\u1eadn, c\u00f4ng th\u1ee9c b\u00f3n ph\u1ed1i tr\u1ed9n 1kg ph\u00e2n h\u1eefu c\u01a1 (ph\u00e2n chu\u1ed3ng hoai) v\u1edbi 100 ph\u00e2n NPK 16:16:8 (CT3) \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1ef7 l\u1ec7 s\u1ed1ng, sinh tr\u01b0\u1edfng v\u00e0 n\u0103ng su\u1ea5t qu\u1ea3 Jatropha cao nh\u1ea5t, kh\u00e1c bi\u1ec7t \u00fd ngh\u0129a r\u00f5 r\u1ec7t so v\u1edbi \u0111\u1ed1i ch\u1ee9ng (t\u0103ng h\u01a1n 60 %) v\u00e0 c\u00e1c c\u00f4ng th\u1ee9c b\u00f3n ph\u00e2n kh\u00e1c (h\u01a1n t\u1eeb 27-42 %).<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00c1p d\u1ee5ng k\u1ef9 thu\u1eadt b\u00f3n nhi\u1ec5m ch\u1ebf ph\u1ea9m n\u1ea5m r\u1ec5 n\u1ed9i c\u1ed9ng sinh AM cho Jatropha tr\u00ean v\u00f9ng \u0111\u1ea5t c\u00e1t kh\u00f4 c\u1eb1n Ninh Ph\u01b0\u1edbc, Ninh Thu\u1eadn l\u00e0m t\u0103ng t\u1ef7 l\u1ec7 c\u00e2y ra hoa, qu\u1ea3 17-25% v\u00e0 t\u0103ng n\u0103ng su\u1ea5t h\u1ea1t 20% \u0111\u1ebfn 35% (so v\u1edbi \u0111\u1ed1i ch\u1ee9ng; p=0,001) trong n\u0103m 1. Trong n\u0103m 2, ph\u1ea3n \u1ee9ng t\u0103ng n\u0103ng su\u1ea5t h\u1ea1t \u0111\u00e3 gi\u1ea3m xu\u1ed1ng c\u00f2n 18-24% so \u0111\u1ed1i ch\u1ee9ng.<\/p>\n","protected":false},"excerpt":{"rendered":"

L\u00ea Qu\u1ed1c Huy Trung t\u00e2m C\u00f4ng ngh\u1ec7 Sinh h\u1ecdc L\u00e2m nghi\u1ec7p 1.\u00a0\u00a0\u00a0 GI\u1edaI THI\u1ec6U \u01af\u01a1i (Scaphium macropodum) v\u00e0 C\u1ecdc r\u00e0o (Jatropha curcas) l\u00e0 2 lo\u00e0i c\u00e2y c\u00f3 nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc r\u1ea5t kh\u00e1c bi\u1ec7t, v\u1edbi nh\u1eefng hi\u1ec7n tr\u1ea1ng qu\u1ea3n l\u00fd, ph\u00e1t tri\u1ec3n kh\u00e1c nhau, m\u1ee5c ti\u00eau quan t\u00e2m, nghi\u00ean c\u1ee9u ph\u00e1t tri\u1ec3n r\u1ea5t kh\u00e1c […]<\/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\/13370"}],"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=13370"}],"version-history":[{"count":5,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/13370\/revisions"}],"predecessor-version":[{"id":19164,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/13370\/revisions\/19164"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=13370"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=13370"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=13370"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}