{"id":8807,"date":"2005-12-26T22:46:06","date_gmt":"2005-12-26T15:46:06","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2005\/12\/ket-qua-buoc-dau-tuyen-chon-mot-so-dong-bach-dan-khang-benh-tai-dong-nam-bo\/"},"modified":"2013-10-06T09:00:34","modified_gmt":"2013-10-06T02:00:34","slug":"ket-qua-buoc-dau-tuyen-chon-mot-so-dong-bach-dan-khang-benh-tai-dong-nam-bo","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/ket-qua-buoc-dau-tuyen-chon-mot-so-dong-bach-dan-khang-benh-tai-dong-nam-bo\/","title":{"rendered":"K\u1ebft qu\u1ea3 b\u01b0\u1edbc \u0111\u1ea7u tuy\u1ec3n ch\u1ecdn m\u1ed9t s\u1ed1 d\u00f2ng b\u1ea1ch \u0111\u00e0n kh\u00e1ng b\u1ec7nh t\u1ea1i \u0110\u00f4ng Nam B\u1ed9"},"content":{"rendered":"

I. M\u1edf \u0111\u1ea7u. <\/p>\n<\/p>\n

B\u1ea1ch \u0111\u00e0n (Eucalyptus<\/i> L\u2019Herit) l\u00e0 m\u1ed9t chi th\u1ef1c v\u1eadt thu\u1ed9c h\u1ecd Sim (Myrtaceae<\/i>) bao g\u1ed3m tr\u00ean 500 lo\u00e0i v\u00e0 \u0111\u01b0\u1ee3c ph\u00e2n th\u00e0nh nhi\u1ec1u chi ph\u1ee5 kh\u00e1c nhau, ch\u1ee7 y\u1ebfu g\u1eb7p \u1edf \u00d4xtr\u00e2ylia. Trong nh\u1eefng n\u0103m v\u1eeba qua, di\u1ec7n t\u00edch r\u1eebng tr\u1ed3ng b\u1ea1ch \u0111\u00e0n tr\u00ean th\u1ebf gi\u1edbi \u0111\u00e3 t\u0103ng l\u00ean \u0111\u00e1ng k\u1ec3. R\u1eebng tr\u1ed3ng b\u1ea1ch \u0111\u00e0n n\u0103m 1990 \u0111\u00e3 \u0111\u1ea1t kho\u1ea3ng 10 tri\u1ec7u ha t\u1ea1i 3 ch\u00e2u l\u1ee5c l\u1edbn l\u00e0 ch\u00e2u Phi, ch\u00e2u M\u1ef9, ch\u00e2u \u00e1 v\u00e0 Th\u00e1i B\u00ecnh D\u01b0\u01a1ng, chi\u1ebfm t\u1edbi 23% t\u1ed5ng di\u1ec7n t\u00edch r\u1eebng tr\u1ed3ng. Braxin l\u00e0 n\u01b0\u1edbc c\u00f3 di\u1ec7n t\u00edch tr\u1ed3ng b\u1ea1ch \u0111\u00e0n l\u1edbn nh\u1ea5t th\u1ebf gi\u1edbi v\u00e0 t\u1edbi n\u0103m 1993 \u01b0\u1edbc t\u00ednh c\u00f3 kho\u1ea3ng 3 tri\u1ec7u ha r\u1eebng tr\u1ed3ng b\u1ea1ch \u0111\u00e0n \u1edf Braxin m\u00e0 trong giai \u0111o\u1ea1n 1972 – 1982, t\u1ed1c \u0111\u1ed9 tr\u1ed3ng l\u00e0 200.000 ha\/n\u0103m. N\u0103m 1972, \u1ea5n \u0110\u1ed9 \u0111\u00e3 c\u00f3 tr\u00ean 400.000 ha, c\u00f2n \u0111\u1ebfn n\u0103m 1985, \u0111\u00e3 c\u00f3 550.000 ha. V\u1edbi nh\u1eefng c\u1ed1 g\u1eafng l\u1edbn lao v\u1ec1 ch\u1ecdn gi\u1ed1ng v\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p th\u00e2m canh m\u00e0 n\u0103ng su\u1ea5t r\u1eebng tr\u1ed3ng \u0111\u00e3 t\u0103ng l\u00ean v\u01b0\u1ee3t b\u1ef1c \u1edf nhi\u1ec1u n\u01b0\u1edbc tr\u00ean th\u1ebf gi\u1edbi trong nh\u1eefng n\u0103m v\u1eeba qua. <\/p>\n<\/p>\n

Trong th\u1ef1c ti\u1ec5n s\u1ea3n xu\u1ea5t, r\u1eebng tr\u1ed3ng b\u1ea1ch \u0111\u00e0n n\u00f3i chung v\u00e0 r\u1eebng tr\u1ed3ng c\u00e1c d\u00f2ng v\u00f4 t\u00ednh cao s\u1ea3n \u0111\u00e3 b\u1ecb m\u1ed9t s\u1ed1 lo\u1ea1i s\u00e2u b\u1ec7nh g\u00e2y h\u1ea1i \u1edf c\u00e1c m\u1ee9c \u0111\u1ed9 kh\u00e1c nhau. R\u1eebng tr\u1ed3ng \u0111\u01a1n d\u00f2ng b\u1ea1ch \u0111\u00e0n cao s\u1ea3n \u1edf Th\u00e1i Lan \u0111\u00e3 b\u1ecb b\u1ec7nh ch\u00e1y l\u00e1 hu\u1ef7 ho\u1ea1i \u0111\u1ed3ng lo\u1ea1t h\u00e0ng ch\u1ee5c ha. R\u1eebng tr\u1ed3ng m\u00f4 hom b\u1ea1ch \u0111\u00e0n nh\u1eadp n\u1ed9i \u1edf n\u01b0\u1edbc ta c\u0169ng \u0111\u00e3 cho th\u1ea5y d\u1ea5u hi\u1ec7u b\u1ec7nh h\u1ea1i \u1edf nhi\u1ec1u n\u01a1i, do v\u1eady b\u00ean c\u1ea1nh c\u00e1c bi\u1ec7n ph\u00e1p g\u00e2y tr\u1ed3ng ph\u00f9 h\u1ee3p th\u00ec tuy\u1ec3n ch\u1ecdn gi\u1ed1ng kh\u00e1ng b\u1ec7nh l\u00e0 y\u00eau c\u1ea7u c\u1ea5p thi\u1ebft c\u1ee7a s\u1ea3n xu\u1ea5t. <\/p>\n<\/p>\n

II. V\u1eadt li\u1ec7u v\u00e0 ph\u01b0\u01a1ng ph\u00e1p. <\/p>\n<\/p>\n

Do n\u1ea5m h\u1ea1i b\u1ea1ch \u0111\u00e0n tr\u1edf th\u00e0nh v\u1ea5n \u0111\u1ec1 nghi\u00eam tr\u1ecdng \u1edf Vi\u1ec7t Nam t\u1eeb \u0111\u1ea7u nh\u1eefng n\u0103m 1990, n\u00ean vi\u1ec7c \u0111\u00e1nh gi\u00e1 n\u1ea5m b\u1ec7nh h\u1ea1i \u1edf c\u00e1c khu kh\u1ea3o nghi\u1ec7m tr\u1edf n\u00ean \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng (Nguy\u1ec5n Ho\u00e0ng Ngh\u0129a, 1992; Nguy\u1ec5n Ho\u00e0ng Ngh\u0129a and Ken Old, 1997). M\u1ee9c \u0111\u1ed9 b\u1ec7nh h\u1ea1i \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 theo c\u00e1c ch\u1ec9 ti\u00eau sau : <\/p>\n<\/p>\n\n\n\n\n
\n

M\u1ee9c \u0111\u1ed9 <\/p>\n

b\u1ec7nh h\u1ea1i<\/p>\n<\/td>\n

\n

Ch\u1ec9 s\u1ed1 m\u1ee9c \u0111\u1ed9 b\u1ec7nh h\u1ea1i<\/p>\n<\/td>\n

\n

Bi\u1ec3u hi\u1ec7n b\u00ean ngo\u00e0i<\/p>\n<\/td>\n<\/tr>\n

\n

Kh\u00f4ng b\u1ecb <\/p>\n<\/p>\n

Th\u1ea5p <\/p>\n<\/p>\n

Trung b\u00ecnh <\/p>\n<\/p>\n

N\u1eb7ng <\/p>\n<\/p>\n

R\u1ea5t n\u1eb7ng<\/p>\n<\/td>\n

\n

0 <\/p>\n<\/p>\n

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

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

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

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

\n

\u00b7L\u00e1 kh\u00f4ng b\u1ecb nhi\u1ec5m b\u1ec7nh v\u00e0 c\u00e0nh kh\u00f4ng b\u1ecb ch\u1ebft do b\u1ec7nh. <\/p>\n

\u00b7T\u1edbi 25% h\u1ec7 l\u00e1 b\u1ecb b\u1ec7nh v\u00e0 t\u1edbi 25% s\u1ed1 c\u00e0nh b\u1ecb ch\u1ebft do b\u1ec7nh. <\/p>\n

\u00b725-50% h\u1ec7 l\u00e1 b\u1ecb b\u1ec7nh v\u00e0 t\u1edbi 50% s\u1ed1 c\u00e0nh b\u1ecb ch\u1ebft do b\u1ec7nh. <\/p>\n

\u00b750-75% h\u1ec7 l\u00e1 b\u1ecb b\u1ec7nh v\u00e0 t\u1edbi 75% s\u1ed1 c\u00e0nh b\u1ecb ch\u1ebft do b\u1ec7nh. <\/p>\n

\u00b7>75% h\u1ec7 l\u00e1 b\u1ecb b\u1ec7nh v\u00e0 >75% s\u1ed1 c\u00e0nh b\u1ecb ch\u1ebft do b\u1ec7nh.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

C\u00e1c c\u00e2y tr\u1ed9i \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ecdn theo nguy\u00ean t\u1eafc chung ph\u1ed5 bi\u1ebfn, song v\u00ec l\u00e0 gi\u1ed1ng kh\u00e1ng b\u1ec7nh n\u00ean ch\u00fang \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ecdn trong c\u00e1c r\u1eebng tr\u1ed3ng, r\u1eebng kh\u1ea3o nghi\u1ec7m t\u1ea1i v\u00f9ng c\u00f3 b\u1ec7nh g\u00e2y h\u1ea1i \u0111\u1ec3 hy v\u1ecdng ch\u1ecdn \u0111\u01b0\u1ee3c c\u00e1c d\u00f2ng kh\u00e1ng b\u1ec7nh. C\u00e1c c\u00e2y v\u1eeba sinh tr\u01b0\u1edfng nhanh v\u1eeba kh\u00e1ng b\u1ec7nh \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ecdn \u0111\u1ec3 nh\u00e2n gi\u1ed1ng hom ph\u1ee5c v\u1ee5 kh\u1ea3o nghi\u1ec7m d\u00f2ng v\u00f4 t\u00ednh. C\u00e1c \u0111\u1ecba \u0111i\u1ec3m c\u00f3 c\u00e2y tr\u1ed9i \u0111\u01b0\u1ee3c tuy\u1ec3n ch\u1ecdn b\u01b0\u1edbc \u0111\u1ea7u l\u00e0: Tr\u1ea3ng Bom v\u00e0 S\u00f4ng M\u00e2y (\u0110\u1ed3ng Nai), B\u1ea7u B\u00e0ng (B\u00ecnh D\u01b0\u01a1ng) v\u00e0 Ch\u01a1n Th\u00e0nh (B\u00ecnh Ph\u01b0\u1edbc).<\/p>\n","protected":false},"excerpt":{"rendered":"

I. M\u1edf \u0111\u1ea7u.<\/p>\n

B\u1ea1ch \u0111\u00e0n (Eucalyptus L\u2019Herit) l\u00e0 m\u1ed9t chi th\u1ef1c v\u1eadt thu\u1ed9c h\u1ecd Sim (Myrtaceae) bao g\u1ed3m tr\u00ean 500 lo\u00e0i v\u00e0 \u0111\u01b0\u1ee3c ph\u00e2n th\u00e0nh nhi\u1ec1u chi ph\u1ee5 kh\u00e1c nhau, ch\u1ee7 y\u1ebfu g\u1eb7p \u1edf \u00d4xtr\u00e2ylia. Trong nh\u1eefng n\u0103m v\u1eeba qua, di\u1ec7n t\u00edch r\u1eebng tr\u1ed3ng b\u1ea1ch \u0111\u00e0n tr\u00ean th\u1ebf gi\u1edbi \u0111\u00e3 t\u0103ng l\u00ean \u0111\u00e1ng k\u1ec3. R\u1eebng tr\u1ed3ng b\u1ea1ch \u0111\u00e0n n\u0103m 1990 \u0111\u00e3 \u0111\u1ea1t kho\u1ea3ng 10 tri\u1ec7u ha t\u1ea1i 3 ch\u00e2u l\u1ee5c l\u1edbn l\u00e0 ch\u00e2u Phi, ch\u00e2u M\u1ef9, ch\u00e2u \u00e1 v\u00e0 Th\u00e1i B\u00ecnh D\u01b0\u01a1ng, chi\u1ebfm t\u1edbi 23% t\u1ed5ng di\u1ec7n t\u00edch r\u1eebng tr\u1ed3ng. Braxin l\u00e0 n\u01b0\u1edbc c\u00f3 di\u1ec7n t\u00edch tr\u1ed3ng b\u1ea1ch \u0111\u00e0n l\u1edbn nh\u1ea5t th\u1ebf gi\u1edbi v\u00e0 t\u1edbi n\u0103m 1993 \u01b0\u1edbc t\u00ednh c\u00f3 kho\u1ea3ng 3 tri\u1ec7u ha r\u1eebng tr\u1ed3ng b\u1ea1ch \u0111\u00e0n \u1edf Braxin m\u00e0 trong giai \u0111o\u1ea1n 1972 – 1982, t\u1ed1c \u0111\u1ed9 tr\u1ed3ng l\u00e0 200.000 ha\/n\u0103m. N\u0103m 1972, \u1ea5n \u0110\u1ed9 \u0111\u00e3 c\u00f3 tr\u00ean 400.000 ha, c\u00f2n \u0111\u1ebfn n\u0103m 1985, \u0111\u00e3 c\u00f3 550.000 ha. V\u1edbi nh\u1eefng c\u1ed1 g\u1eafng l\u1edbn lao v\u1ec1 ch\u1ecdn gi\u1ed1ng v\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p th\u00e2m canh m\u00e0 n\u0103ng su\u1ea5t r\u1eebng tr\u1ed3ng \u0111\u00e3 t\u0103ng l\u00ean v\u01b0\u1ee3t b\u1ef1c \u1edf nhi\u1ec1u n\u01b0\u1edbc tr\u00ean th\u1ebf gi\u1edbi trong nh\u1eefng n\u0103m v\u1eeba qua. <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[13],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8807"}],"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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/comments?post=8807"}],"version-history":[{"count":1,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8807\/revisions"}],"predecessor-version":[{"id":10263,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8807\/revisions\/10263"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=8807"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=8807"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=8807"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}