{"id":13112,"date":"2014-06-27T10:42:49","date_gmt":"2014-06-27T03:42:49","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/?p=13112"},"modified":"2014-06-16T10:47:05","modified_gmt":"2014-06-16T03:47:05","slug":"bao-cao-tom-tat-de-tai-nghien-cuu-ky-thuat-gay-trong-mot-so-loai-cay-ban-dia-co-gia-tri-o-vung-kho-han-ninh-thuan-binh-thuan","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/bao-cao-tom-tat-de-tai-nghien-cuu-ky-thuat-gay-trong-mot-so-loai-cay-ban-dia-co-gia-tri-o-vung-kho-han-ninh-thuan-binh-thuan\/","title":{"rendered":"B\u00e1o c\u00e1o t\u00f3m t\u1eaft \u0111\u1ec1 t\u00e0i: Nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba c\u00f3 gi\u00e1 tr\u1ecb \u1edf v\u00f9ng kh\u00f4 h\u1ea1n Ninh Thu\u1eadn \u2013 B\u00ecnh Thu\u1eadn"},"content":{"rendered":"<p><em>TS. Ph\u1ea1m Th\u1ebf D\u0169ng<b> <\/b><\/em><\/p>\n<p><b>I. \u0110\u1eb6T V\u1ea4N \u0110\u1ec0 V\u00c0 T\u1ed4NG QUAN NGHI\u00caN C\u1ee8U <\/b><\/p>\n<p>Nhi\u1ec1u n\u0103m qua, vi\u1ec7c g\u00e2y tr\u1ed3ng c\u00e1c lo\u00e0i c\u00e2y c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf tr\u00ean v\u00f9ng \u0111\u1ea5t Ninh Thu\u1eadn, B\u00ecnh Thu\u1eadn \u0111ang g\u1eb7p nhi\u1ec1u kh\u00f3 kh\u0103n. \u0110\u00e3 c\u00f3 h\u00e0ng ng\u00e0n ha r\u1eebng tr\u1ed3ng b\u1ecb ch\u1ebft\u00a0 do kh\u00f4 h\u1ea1n, c\u00f2n l\u1ea1i c\u0169ng sinh tr\u01b0\u1edfng r\u1ea5t k\u00e9m.<\/p>\n<p>Do \u0111\u00f3,vi\u1ec7c t\u00ecm ki\u1ebfm nh\u1eefng lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u01b0\u1ee3c \u0111i\u1ec1u ki\u1ec7n kh\u00f4 h\u1ea1n nh\u01b0ng c\u00f3 g\u00eda tr\u1ecb kinh t\u1ebf, c\u00f3 kh\u1ea3 n\u0103ng c\u1ea3i t\u1ea1o m\u00f4i tr\u01b0\u1eddng, c\u1ea3i thi\u1ec7n ti\u1ec3u v\u00f9ng sinh th\u00e1i cho ph\u00e1t tri\u1ec1n n\u00f4ng nghi\u1ec7p\u2026 l\u00e0 \u0111i\u1ec1u c\u1ea7n gi\u1ea3i quy\u1ebft trong \u0111\u1ec1 t\u00e0i NC: \u201c<b><i>Nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba c\u00f3 gi\u00e1 tr\u1ecb \u1edf v\u00f9ng kh\u00f4 h\u1ea1n Ninh Thu\u1eadn \u2013 B\u00ecnh Thu\u1eadn\u201d<\/i><\/b>.<\/p>\n<ol>\n<li>Nghi\u00ean c\u1ee9u \u1edf N\u01b0\u1edbc ngo\u00e0i<\/li>\n<\/ol>\n<p>\u0110\u00e3 c\u00f3 NC k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng r\u1eebng v\u00f9ng kh\u00f4 h\u1ea1n \u201cL\u00e2m nghi\u1ec7p tr\u00ean h\u00e0nh tinh c\u00e1t\u201d (Forestry in Sandy World) c\u1ee7a Benn Salmb, Erent. \u2013 FAO Unasylva Vol. 34 No 135, 1982.<\/p>\n<p>NC tr\u1ed3ng c\u00e2y tr\u00ean c\u00e1c d\u1ea3i c\u00e1t v\u00e0 g\u00f2 \u0111\u1ed3i ven bi\u1ec3n (\u0110\u00e0i Loan) (h\u00e0ng r\u00e0o ch\u1eafn gi\u00f3 b\u1eb1ng ph\u00ean tre v\u1edbi h\u1ec7 th\u1ed1ng c\u1ecdc gi\u1eef kh\u00e1 v\u1eefng ch\u1eafc r\u1ed3i tr\u1ed3ng c\u00e2y Phi lao v\u00e0o gi\u1eefa hai d\u00e3y h\u00e0ng r\u00e0o ph\u00ean tre\u2026<\/p>\n<p>Nh\u1eadt B\u1ea3n \u0111\u00e3 nghi\u00ean c\u1ee9u th\u00e0nh c\u00f4ng tr\u1ed3ng r\u1eebng tr\u00ean sa m\u1ea1c \u1edf Ch\u00e2u Phi v\u1edbi l\u1edbp c\u00e1t d\u00e0y nhi\u1ec1u m\u00e9t b\u1eb1ng c\u00e1ch \u00e1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p th\u1ee7y canh k\u00e9o d\u00e0i r\u1ec5 c\u00e2y trong nh\u1eefng \u1ed1ng tre (\u1ed1p 2 b\u00ean r\u1ec5 c\u00e2y), khi c\u00e2y c\u00f3 r\u1ec5 d\u00e0i tr\u00ean 2 m\u00e9t m\u1edbi \u0111em \u0111i tr\u1ed3ng.<\/p>\n<p>2. Nghi\u00ean c\u1ee9u \u01a1 trong n\u01b0\u1edbc<\/p>\n<p>\u0110\u00e3 c\u00f3 nhi\u1ec1u NC c\u00f3 li\u00ean quan nh\u01b0:<\/p>\n<ul>\n<li>NC tr\u1ed3ng Phi Lao tr\u00ean \u0111\u1ea5t c\u00e1t ven bi\u1ec3n c\u1ee7a G\u00edao s\u01b0 L\u00e2m C\u00f4ng \u0110\u1ecbnh (Qu\u1ea3ng B\u00ecnh, B\u00ecnh Thu\u1eadn).<\/li>\n<li>Ph\u00ed Quang \u0110i\u1ec7n (1997), bao g\u1ed3m 5 xu\u1ea5t x\u1ee9 v\u00e0 3 lo\u00e0i \u0111\u00e3 c\u00f4ng nh\u1eadn l\u00e0 gi\u1ed1ng ti\u1ebfn b\u1ed9 k\u1ef9 thu\u1eadt nh\u01b0 <i>A.difficilis, A.tolurosa, A.tumida (B\u1ed9 NN&amp;PTNT,2005).<\/i><\/li>\n<li>C\u00e1c m\u00f4 h\u00ecnh tr\u1ed3ng v\u1edbi v\u00e0nh \u0111ai c\u00e2y xanh kh\u00e1c ph\u1ee5 tr\u1ee3 c\u00e2y \u0110i\u1ec1u (Nguy\u1ec5n V\u0103n M\u1ec5, 1990).<\/li>\n<li>Ng\u00f4 \u0110\u1ee9c Hi\u1ec7p (2005) NC x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh l\u00e2m n\u00f4ng nghi\u1ec7p v\u00f9ng duy\u00ean h\u1ea3i mi\u1ec1n Trung (Ch\u00e0 L\u00e0, \u0110i\u1ec1u, Phi Lao) g\u1eafn v\u1edbi c\u00e1c lo\u00e0i c\u00e2y NN.<\/li>\n<li>T\u1ea1 Minh S\u01a1n (2002) x\u00e2y d\u1ef1ng c\u01a1 s\u1edf khoa h\u1ecdc x\u00e2y d\u1ef1ng c\u00e1c m\u00f4 h\u00ecnh kinh t\u1ebf-k\u1ef9 thu\u1eadt v\u00f9ng duy\u00ean h\u00e3i mi\u1ec1n Trung.<\/li>\n<li>\u0110\u1eb7ng V\u0103n Thuy\u1ebft (2008) \u0111\u00e3 NC gi\u1ea3i ph\u00e1p tr\u1ed3ng r\u1eebng ph\u00f2ng h\u1ed9 tr\u00ean \u0111\u1ea5t c\u00e1t ven bi\u1ec3n (ph\u1ed1i h\u1ee3p c\u00e2y cao, nh\u1ee1) theo c\u00e1c \u0111ai r\u1eebng t\u00f9y theo nh\u00f3m d\u1ea1ng l\u1eadp \u0111\u1ecba \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e2n h\u1ea1ng.<\/li>\n<li>N\u0103m 2005, \u00c1i L\u00e2m,Tuy Phong (BT) \u0111\u00e3 x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh tr\u1ed3ng C\u00f3c h\u00e0nh 10 ha. T\u1ef7 l\u1ec7 c\u00e2y s\u1ed1ng \u0111\u1ea1t tr\u00ean 90% sau 1 n\u0103m.<\/li>\n<li>Nguy\u1ec5n Vi\u1ec7t C\u01b0\u1eddng (2005-2006), \u0111\u00e3 th\u1eed gh\u00e9p hai lo\u00e0i c\u00e2y Xoan ch\u1ecbu h\u1ea1n v\u00e0 C\u00f3c h\u00e0nh (ch\u01b0a c\u00f4ng b\u1ed1).<\/li>\n<li>Nghi\u00ean c\u1ee9u v\u1ec1 ph\u00e2n lo\u1ea1i, m\u00f4 t\u1ea3 h\u00ecnh th\u00e1i, sinh th\u00e1i c\u1ee7a m\u1ed9t s\u1ed1 c\u00e2y ch\u1ecbu h\u1ea1n, trong \u0111\u00f3 c\u00f3 <i>C\u00e2y Tr\u00f4m<\/i> c\u1ee7a GS. Ph\u1ea1m Ho\u00e0ng H\u1ed9 (1999) \u0111\u00e3 \u0111\u01b0\u1ee3c ghi nh\u1eadn, nh\u01b0ng S\u00f2 \u0110o v\u00e0 C\u00f3c H\u00e0nh ch\u01b0a \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3.<\/li>\n<li>NC v\u1ec1 gia tr\u1ecb s\u1eed d\u1ee5ng c\u1ee7a C\u00f3c h\u00e0nh, Neem<b>\u00a0 <\/b>Nguy\u1ec5n V\u0103n Tu\u1ea5t, Nguy\u1ec5n Duy Trang (2002), Nguy\u1ec5n Th\u00e0nh L\u00ea (2003).<\/li>\n<\/ul>\n<p>Nh\u00ecn chung, c\u00e1c k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u v\u1ec1 lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba v\u00f9ng Ninh Thu\u1eadn v\u00e0 B\u00ecnh Thu\u1eadn ch\u01b0a nhi\u1ec1u, m\u1eb7c d\u00f9 t\u1ec9nh Ninh Thu\u1eadn \u0111\u00e3 c\u00f3 tr\u1ed3ng th\u1eed c\u00e2y C\u00f3c H\u00e0nh, Tr\u00f4m nh\u01b0ng k\u1ef9 thu\u1eadt tr\u1ed3ng, x\u00e1c \u0111\u1ecbnh \u0111\u00fang c\u00e1c d\u1ea1ng l\u1eadp \u0111\u1ecba v\u00f9ng kh\u00f4 h\u1ea1n g\u1eafn li\u1ec1n v\u1edbi c\u00e1c ch\u1ec9 ti\u00eau kinh t\u1ebf x\u00e3 h\u1ed9i l\u00e0 \u0111i\u1ec1u c\u1ea7n ti\u1ebfp t\u1ee5c NC. C\u00e2y S\u00f2 \u0111o l\u00e0 c\u00e2y b\u1ea3n \u0111\u1ecba t\u00ecm th\u1ea5y t\u1ea1i nhi\u1ec1u n\u01a1i \u1edf r\u1eebng th\u1ee9 sinh v\u00e0 tr\u00ean c\u00e1c v\u00f9ng \u0111\u1ea5 c\u00e1t nh\u01b0ng ch\u01b0a \u0111\u01b0\u1ee3 quan t\u00e2m g\u00e2y tr\u1ed3ng.<\/p>\n<p><a href=\"http:\/\/vafs.gov.vn\/vn\/?attachment_id=13113\" rel=\"attachment wp-att-13113\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-13113\" alt=\"Vungkho han caytrom\" src=\"http:\/\/vafs.gov.vn\/vn\/wp-content\/uploads\/sites\/2\/2014\/06\/Vungkho-han-caytrom.jpg\" width=\"625\" height=\"469\" srcset=\"https:\/\/vafs.gov.vn\/vn\/wp-content\/uploads\/sites\/2\/2014\/06\/Vungkho-han-caytrom.jpg 625w, https:\/\/vafs.gov.vn\/vn\/wp-content\/uploads\/sites\/2\/2014\/06\/Vungkho-han-caytrom-500x375.jpg 500w\" sizes=\"(max-width: 625px) 100vw, 625px\" \/><\/a><\/p>\n<p><b>II. M\u1ee4C TI\u00caU NGHI\u00caN C\u1ee8U C\u1ee6A \u0110\u1ec0 T\u00c0I <\/b><\/p>\n<ol>\n<li>X\u00e1c \u0111\u1ecbnh t\u1eadp \u0111o\u00e0n c\u00e2y b\u1ea3n \u0111\u1ecba c\u00f3 g\u00eda tr\u1ecb t\u1ea1i Ninh Thu\u1eadn v\u00e0 B\u00ecnh Thu\u1eadn.<\/li>\n<li>Nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng ba (03) lo\u00e0i c\u00e2y Tr\u00f4m, C\u00f3c H\u00e0nh v\u00e0 S\u00f2 \u0110o.<\/li>\n<\/ol>\n<p><b>III. N\u1ed8I DUNG NGHI\u00caN C\u1ee8U<\/b><b><\/b><\/p>\n<p><b>N\u1ed9i dung 1- <\/b><\/p>\n<ul>\n<li>\u0110i\u1ec1u tra ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean c\u1ee7a c\u00e1c lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba c\u00f3 g\u00eda tr\u1ecb v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng g\u00e2y tr\u1ed3ng<\/li>\n<li>Tr\u1ed3ng s\u01b0u t\u1eadp \u00edt nh\u1ea5t 10 lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba c\u00f3 g\u00eda tr\u1ecb khoa h\u1ecdc, kinh t\u1ebf, c\u00f3 nguy c\u01a1 tuy\u1ec7t ch\u1ee7ng v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i b\u1eb1ng k\u1ef9 thu\u1eadt t\u00e1i sinh nh\u00e2n t\u1ea1o<\/li>\n<\/ul>\n<p><b>N\u1ed9i dung 2 &#8211; <\/b><\/p>\n<ul>\n<li>NC k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng: NC k\u1ef9 thu\u1eadt thu h\u00e1i, b\u1ea3o qu\u1ea3n h\u1ea1t v\u00e0 NC k\u1ef9 thu\u1eadt t\u1ea1o gi\u1ed1ng c\u00e2y b\u1eb1ng h\u1ea1t v\u00e0 k\u1ef9 thu\u1eadt gi\u00e2m hom<\/li>\n<li>NC KT tr\u1ed3ng tr\u00ean 2 d\u1ea1ng l\u1eadp \u0111\u1ecba ch\u1ee7 y\u1ebfu c\u1ee7a hai t\u1ec9nh<\/li>\n<li>NC x\u00e1c \u0111\u1ecbnh \u0111\u1eb7c \u0111i\u1ec3m l\u1eadp \u0111\u1ecba tr\u1ed3ng.<\/li>\n<li>NC s\u1eed d\u1ee5ng ph\u00e2n b\u00f3n.<\/li>\n<li>NC m\u1eadt \u0111\u1ed9 tr\u1ed3ng ph\u1ed1i h\u1ee3p b\u00f3n ph\u00e2n.<\/li>\n<li>NC n\u00e2ng cao sinh tr\u01b0\u1edfng v\u1edbi c\u00e2y S\u00f2 \u0110o th\u00f4ng qua c\u00e1c k\u1ef9 thu\u1eadt l\u00e2m sinh.<\/li>\n<\/ul>\n<p><b>IV. PH\u01af\u01a0NG PH\u00c1P NGHI\u00caN C\u1ee8U<\/b><\/p>\n<ol>\n<li><b>\u00c1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p NC sinh th\u00e1i m\u00f4 t\u1ea3:<\/b><\/li>\n<\/ol>\n<ul>\n<li>Kh\u1ea3o s\u00e1t thu th\u1eadp m\u1eabu, th\u1ed1ng k\u00ea v\u00e0 m\u00f4 t\u1ea3 ngo\u00e0i th\u1ef1c \u0111\u1ecba v\u00e0 k\u1ebft h\u1ee3p t\u00e0i li\u1ec7u tham kh\u1ea3o s\u1ebd x\u00e1c \u0111\u1ecbnh \u0111\u1eb7c t\u00ednh h\u00ecnh th\u00e1i,sinh th\u00e1i h\u1ecdc, gi\u00e1 tr\u1ecb kinh t\u1ebf v\u00e0 m\u00f4i tr\u01b0\u1eddng c\u1ee7a m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba.<\/li>\n<li>S\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 (RRA) v\u00e0 (PRA) nh\u1eb1m khai th\u00e1c \u201cki\u1ebfn th\u1ee9c b\u1ea3n \u0111\u1ecba\u201d cho kh\u1ea3o s\u00e1t c\u00e1c l\u00f2ai c\u00e2y v\u1ec1 g\u00eda tr\u1ecb kinh t\u1ebf.<\/li>\n<li><i>Ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tra:<\/i><\/li>\n<\/ul>\n<p>+ M\u1ea1ng l\u01b0\u1edbi \u00f4 ti\u00eau chu\u1ea9n \u0111i\u1ec3n h\u00ecnh<\/p>\n<p>+\u00d4 \u0111i\u1ec1u tra 1000m<sup>2<\/sup> (33x30m), c\u00f3 35 \u00f4 \u0111i\u1ec1u tra\u00a0 (T\u1ea1i v\u01b0\u1eddn qu\u1ed1c gia N\u00fai Ch\u00faa (Ninh Thu\u1eadn) 15 \u00f4; L\u00e2m tr\u01b0\u1eddng Ninh S\u01a1n (Ninh Thu\u1eadn) 5 \u00f4; Khu b\u1ea3o t\u1ed3n B\u00ecnh Ch\u00e2u &#8211; Ph\u01b0\u1edbc B\u1eedu (B\u00ecnh Thu\u1eadn &#8211; B\u00e0 R\u1ecba V\u0169ng T\u00e0u) 5 \u00f4; Khu B\u1ea3o t\u1ed3n Tak\u00fa (B\u00ecnh Thu\u1eadn) 5 \u00f4; Ban qu\u1ea3n l\u00fd r\u1eebng ph\u00f2ng h\u1ed9 S\u00f4ng Quoai (H\u00e0m Thu\u1eadn B\u1eafc &#8211; B\u00ecnh Thu\u1eadn) 5 \u00f4) .Ngo\u00e0i ra, t\u1ea1i TP. Phan Thi\u1ebft, huy\u1ec7n B\u1eafc B\u00ecnh, Tuy Phong (B\u00ecnh Thu\u1eadn), huy\u1ec7n Ninh Ph\u01b0\u1edbc (Ninh Thu\u1eadn) \u0111\u01b0\u1ee3c \u0111i\u1ec1u tra theo c\u00e1c tuy\u1ebfn \u0111i\u1ec1u tra.<\/p>\n<p><b>2. \u00a0\u00c1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p NC sinh th\u00e1i th\u1ef1c nghi\u1ec7m<\/b>.<\/p>\n<p>&#8211;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u0110\u1ecba \u0111i\u1ec3m NC: Tr\u1ea1m TNLN Thi\u1ec7n Nghi\u1ec7p B\u00ecnh Thu\u1eadn v\u00e0 Ninh Ph\u01b0\u1edbc Ninh Thu\u1eadn v\u00e0 ph\u00f2ng th\u00ed nghi\u1ec7m t\u1ea1i Ph\u00e2n vi\u1ec7n.<\/p>\n<p>&#8211;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Ph\u01b0\u01a1ng ph\u00e1p b\u1ed1 tr\u00ed th\u00ed nghi\u1ec7m: theo kh\u1ed1i ng\u1eabu nhi\u00ean \u0111\u1ea7y \u0111\u1ee7, v\u1edbi 3-5 l\u1ea7n l\u1eb7p l\u1ea1i t\u00f9y theo t\u1eebng th\u00ed nghi\u1ec7m.<\/p>\n<p>&#8211;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Ph\u01b0\u01a1ng ph\u00e1p thu th\u1eadp s\u1ed1 li\u1ec7u: \u0110\u1ed1i v\u1edbi c\u00e1c th\u00ed nghi\u1ec7m nh\u00e2n gi\u1ed1ng; \u0111\u1ed1i th\u00ed nghi\u1ec7m trong ph\u00f2ng th\u00ed nghi\u1ec7m; \u0111\u1ed1i v\u1edbi TN ngo\u00e0i r\u1eebng: 6 th\u00e1ng 1 l\u1ea7n \u0111o c\u00e1c ch\u1ec9 s\u1ed1 sinh tr\u01b0\u1edfng D, H, ch\u1ec9 s\u1ed1 kh\u00e1c.<\/p>\n<p>&#8211;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 X\u1eed l\u00ed k\u1ebft q\u1ee7a NC b\u1eb1ng c\u00e1c c\u00f4ng c\u1ee5 th\u1ed1ng k\u00ea th\u00f4ng th\u01b0\u1eddng.<\/p>\n<p>(<i>chi ti\u1ebft xem b\u00e1o c\u00e1o t\u1ed5ng k\u1ebft)<\/i><\/p>\n<p><b>V. K\u1ebeT QU\u1ea2 NGHI\u00caN C\u1ee8U <\/b><\/p>\n<p>1. <b>X\u00e1c \u0111\u1ecbnh c\u00e1c lo\u00e0i c\u00e2y ch\u1ecbu h\u1ea1n<\/b>.<\/p>\n<p>Nh\u1eefng c\u0103n c\u1ee9 \u0111\u1ec3 ch\u1ecdn lo\u00e0i c\u00f3 kh\u1ea3 n\u0103ng \u0111\u01b0a v\u00e0o tr\u1ed3ng th\u1eed nghi\u1ec7m v\u00e0 tr\u1ed3ng v\u01b0\u1eddn s\u01b0u t\u1eadp:<\/p>\n<ul>\n<li>C\u0103n c\u1ee9 v\u00e0o s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a lo\u00e0i t\u1ea1i v\u00f9ng nghi\u00ean c\u1ee9u qua c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m sinh th\u00e1i h\u00ecnh th\u00e1i \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 trong ph\u1ee5 l\u1ee5c b\u00e1o c\u00e1o;<\/li>\n<li>C\u0103n c\u1ee9 kh\u1ea3 n\u0103ng g\u00e2y tr\u1ed3ng qua \u0111i\u1ec1u tra.<\/li>\n<li>C\u0103n c\u1ee9 v\u00e0o gi\u00e1 tr\u1ecb s\u1eed d\u1ee5ng: Gi\u00e1 tr\u1ecb kinh t\u1ebf, gi\u00e1 tr\u1ecb b\u1ea3o t\u1ed3n, gi\u00e1 tr\u1ecb m\u00f4i tr\u01b0\u1eddng.<\/li>\n<li>C\u0103n c\u1ee9 v\u00e0o t\u1ef7 l\u1ec7 s\u1ed1 phi\u1ebfu ph\u1ecfng v\u1ea5n c\u00e1c h\u1ed9 d\u00e2n thu\u1eadn tr\u1ed3ng.<\/li>\n<\/ul>\n<p>\u00e8 Sau khi ph\u00e2n t\u00edch s\u1ed1 li\u1ec7u, \u0111\u1ec1 t\u00e0i \u0111\u00e3 ch\u1ecdn ra \u0111\u01b0\u1ee3c 10 lo\u00e0i c\u00e2y c\u00f3 kh\u1ea3 n\u0103ng g\u00e2y tr\u1ed3ng t\u1ea1i v\u00f9ng kh\u00f4 h\u1ea1n g\u1ed3m: Tr\u00f4m h\u00f4i, C\u00f3c h\u00e0nh, S\u00f2 \u0110o, Me keo (Keo gai), Me Ng\u1ecdt, S\u1ebfn c\u00e1t, D\u1ea7u c\u00e1t, G\u00f5 \u0111\u1ecf, Xoay (x\u00e2y), V\u00ean v\u00ean. C\u00e1c lo\u00e0i c\u00e2y n\u00e0y c\u0169ng \u0111\u01b0\u1ee3c tr\u1ed3ng th\u1eed trong v\u01b0\u1eddn s\u01b0u t\u1eadp t\u1ea1i n\u01a1i nghi\u00ean c\u1ee9u.<\/p>\n<p><b>2. K\u1ebft qu\u1ea3 TN v\u1ec1 \u00a0nh\u00e2n gi\u1ed1ng <\/b><\/p>\n<p><b>2.1 . Th\u00ed nghi\u1ec7m gi\u00e2m hom c\u00e2y C\u00f3c H\u00e0nh<\/b><\/p>\n<p><i>a . Th\u00ed nghi\u1ec7m \u1ea3nh h\u01b0\u1edfng c\u1ee7a gi\u00e1 th\u1ec3 gi\u00e2m hom<\/i><\/p>\n<p>N\u1ed9i dung TN: G<sub>1<\/sub> \u2013 G\u00eda th\u1ec3 c\u00e1t; \u00a0G<sub>2<\/sub> \u2013 Gi\u00e1 th\u1ec3 tro: c\u00e1t (t\u1ef7 l\u1ec7 1:1)<\/p>\n<h1 align=\"center\">B\u1ea3ng 1. \u1ea2nh h\u01b0\u1edfng c\u1ee7a g\u00eda th\u1ec3 gi\u00e2m hom \u0111\u1ebfn t\u1ef7 l\u1ec7 ra r\u1ec5 v\u00e0 t\u1ef7 l\u1ec7 hom c\u00f3\u00a0 m\u00f4 s\u1eb9o sau 50 ng\u00e0y gi\u00e2m hom.<\/h1>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td rowspan=\"2\" valign=\"top\" width=\"83\">L\u1ea7n l\u1eb7p l\u1ea1i<\/td>\n<td rowspan=\"2\" valign=\"top\" width=\"116\">Dung l\u01b0\u1ee3ng m\u1eabu<\/td>\n<td colspan=\"2\" valign=\"top\" width=\"198\">T\u1ec9 l\u1ec7 hom ra r\u1ec5 (%)<\/td>\n<td colspan=\"2\" valign=\"top\" width=\"198\">T\u1ec9 l\u1ec7 hom c\u00f3 m\u00f4 s\u1eb9o (%)<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"108\">\n<p align=\"center\">G<sub>1<\/sub><\/p>\n<\/td>\n<td valign=\"top\" width=\"90\">\n<p align=\"center\">G<sub>2<\/sub><\/p>\n<\/td>\n<td valign=\"top\" width=\"96\">\n<p align=\"center\">G<sub>1<\/sub><\/p>\n<\/td>\n<td valign=\"top\" width=\"102\">\n<p align=\"center\">G<sub>2<\/sub><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"83\">\n<p align=\"center\">1<\/p>\n<\/td>\n<td valign=\"top\" width=\"116\">\n<p align=\"center\">50<\/p>\n<\/td>\n<td valign=\"top\" width=\"108\">\n<p align=\"center\">28<\/p>\n<\/td>\n<td valign=\"top\" width=\"90\">\n<p align=\"center\">20<\/p>\n<\/td>\n<td valign=\"top\" width=\"96\">\n<p align=\"center\">32<\/p>\n<\/td>\n<td valign=\"top\" width=\"102\">\n<p align=\"center\">30<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"83\">\n<p align=\"center\">2<\/p>\n<\/td>\n<td valign=\"top\" width=\"116\">\n<p align=\"center\">50<\/p>\n<\/td>\n<td valign=\"top\" width=\"108\">\n<p align=\"center\">30<\/p>\n<\/td>\n<td valign=\"top\" width=\"90\">\n<p align=\"center\">22<\/p>\n<\/td>\n<td valign=\"top\" width=\"96\">\n<p align=\"center\">36<\/p>\n<\/td>\n<td valign=\"top\" width=\"102\">\n<p align=\"center\">22<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"83\">\n<p align=\"center\">3<\/p>\n<\/td>\n<td valign=\"top\" width=\"116\">\n<p align=\"center\">50<\/p>\n<\/td>\n<td valign=\"top\" width=\"108\">\n<p align=\"center\">30<\/p>\n<\/td>\n<td valign=\"top\" width=\"90\">\n<p align=\"center\">24<\/p>\n<\/td>\n<td valign=\"top\" width=\"96\">\n<p align=\"center\">32<\/p>\n<\/td>\n<td valign=\"top\" width=\"102\">\n<p align=\"center\">24<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"83\">\n<p align=\"center\">TB<\/p>\n<\/td>\n<td valign=\"top\" width=\"116\">\n<p align=\"center\">\n<\/td>\n<td valign=\"top\" width=\"108\">\n<p align=\"center\">29<\/p>\n<\/td>\n<td valign=\"top\" width=\"90\">\n<p align=\"center\">22<\/p>\n<\/td>\n<td valign=\"top\" width=\"96\">\n<p align=\"center\">33.3<\/p>\n<\/td>\n<td valign=\"top\" width=\"102\">\n<p align=\"center\">25<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Nh\u01b0 v\u1eady, gi\u00e1 th\u1ec3 l\u00e0 c\u00e1t t\u1ed1t h\u01a1n gi\u00e1 th\u1ec3 c\u00e1t tro theo t\u1ef7 l\u1ec7 1:1. Ngo\u00e0i ra t\u1ef7 l\u1ec7 hom c\u00f3 m\u00f4 s\u1eb9o c\u1ee7a gi\u00e1 th\u1ec3 c\u00e1t c\u0169ng cao h\u01a1n. S\u1ed1 hom c\u00f3 m\u00f4 s\u1eb9o c\u00f3 kh\u1ea3 n\u0103ng ra r\u1ec5 cao. V\u1ec1 th\u1ed1ng k\u00ea, ph\u00e2n t\u00edch Anova cho th\u1ea5y s\u1ef1 kh\u00e1c nhau gi\u1eefa hai gi\u00e1 th\u1ec3 c\u00f3 \u00fd ngh\u0129a (P=0.0053&gt;0.01). V\u1eady gi\u00e1 th\u1ec3 c\u00e1t ch\u1ecdn gi\u00e2m hom t\u1ed1t h\u01a1n.<\/p>\n<p><b><i><span style=\"text-decoration: underline\">K\u1ebft q\u1ee7a nghi\u00ean c\u1ee9u<\/span><\/i><\/b><b> <\/b><\/p>\n<h1 align=\"center\">B\u1ea3ng 2. Ph\u00e1t tri\u1ec3n c\u1ee7a h\u1ec7 th\u1ed1ng r\u1ec5 gi\u00e2m hom C\u00f3c h\u00e0nh d\u01b0\u1edbi \u1ea3nh h\u01b0\u1edfng c\u1ee7a g\u00eda th\u1ec3.<\/h1>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td rowspan=\"2\" width=\"333\">\n<p align=\"center\">Ch\u1ec9 ti\u00eau theo d\u00f5i<\/p>\n<\/td>\n<td colspan=\"2\" valign=\"top\" width=\"261\">\n<p align=\"center\">Nghi\u1ec7m th\u1ee9c<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"126\">\n<p align=\"center\">G<sub>1<\/sub><\/p>\n<\/td>\n<td valign=\"top\" width=\"135\">\n<p align=\"center\">G<sub>2<\/sub><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"333\">B\u00ecnh qu\u00e2n s\u1ed1 l\u01b0\u1ee3ng r\u1ec5 tr\u00ean c\u00e2y hom (c\u00e1i)<\/td>\n<td valign=\"top\" width=\"126\">\n<p align=\"center\">\u00a01.6<\/p>\n<\/td>\n<td valign=\"top\" width=\"135\">\n<p align=\"center\">\u00a01.2<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"333\">B\u00ecnh qu\u00e2n chi\u1ec1u d\u00e0i c\u1ee7a r\u1ec5 d\u00e0i nh\u1ea5t (cm)<\/td>\n<td valign=\"top\" width=\"126\">\n<p align=\"center\">37.0<\/p>\n<\/td>\n<td valign=\"top\" width=\"135\">\n<p align=\"center\">18.0<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"333\">B\u00ecnh qu\u00e2n chi\u1ec1u d\u00e0i c\u1ee7a r\u1ec5 c\u1ee7a hom (cm)<\/td>\n<td valign=\"top\" width=\"126\">\n<p align=\"center\">23.0<\/p>\n<\/td>\n<td valign=\"top\" width=\"135\">\n<p align=\"center\">14.0<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>B\u1ea3ng tr\u00ean cho th\u1ea5y ba ch\u1ec9 ti\u00eau t\u00ednh \u0111\u01b0\u1ee3c c\u1ee7a nghi\u1ec7m th\u1ee9c G<sub>1 <\/sub>(gi\u00e1 th\u1ec3 c\u00e1t) \u0111\u1ec1u cao h\u01a1n nghi\u1ec7m th\u1ee9c G<sub>2 <\/sub>(gi\u00e1 th\u1ec3 c\u00e1t tro theo t\u1ef7 l\u1ec7 1:1). \u0110i\u1ec1u n\u00e0y c\u00e0ng kh\u1eb3ng \u0111\u1ecbnh gi\u00e1 th\u1ec3 c\u00e1t \u0111\u01b0\u1ee3c ch\u1ecdn trong gi\u00e2m hom c\u00e2y c\u00f3c h\u00e0nh l\u00e0 t\u1ed1t h\u01a1n g\u00eda th\u1ebf c\u00e1t-tro. Quan s\u00e1t ch\u1ec9 s\u1ed1 ra r\u1ec5 b\u00ecnh qu\u00e2n \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n c\u0169ng cho th\u1ea5y n\u0103ng l\u1ef1c c\u1ee7a h\u1ec7 th\u1ed1ng r\u1ec5 c\u1ee7a gi\u00e1 th\u1ec3 c\u00e1t l\u1edbn h\u01a1n nhi\u1ec1u so v\u1edbi tr\u00ean g\u00eda th\u1ec3 c\u00e1t-tro.<\/p>\n<p><b><i>b. \u1ea2nh h\u01b0\u1edfng c\u1ee7a c\u00e1c lo\u1ea1i hom v\u00e0 gi\u00e1 th\u1ec3<\/i><\/b><b> <\/b><\/p>\n<h1>B\u1ea3ng 3. \u1ea2nh h\u01b0\u1edfng c\u1ee7a lo\u1ea1i hom &amp; gi\u00e1 th\u1ec3 \u0111\u1ebfn t\u1ef7 l\u1ec7 ra r\u1ec5 v\u00e0 t\u1ef7 l\u1ec7 hom c\u00f3 m\u00f4 s\u1eb9o sau 50 ng\u00e0y gi\u00e2m hom<\/h1>\n<table width=\"661\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td rowspan=\"2\" valign=\"top\" width=\"85\">L\u1ea7n l\u1eb7p l\u1ea1i<\/td>\n<td rowspan=\"2\" valign=\"top\" width=\"90\">Dung l\u01b0\u1ee3ng m\u1eabu<\/td>\n<td colspan=\"4\" valign=\"top\" width=\"234\">\u00a0\u00a0\u00a0\u00a0 T\u1ec9 l\u1ec7 hom ra r\u1ec5 (%)<\/td>\n<td colspan=\"4\" valign=\"top\" width=\"252\">\u00a0T\u1ec9 l\u1ec7 hom c\u00f3 m\u00f4 s\u1eb9o (%)<\/td>\n<\/tr>\n<tr>\n<td width=\"60\">\n<p align=\"center\">N<sub>1<\/sub>G<sub>1<\/sub><\/p>\n<\/td>\n<td width=\"60\">\n<p align=\"center\">N<sub>1<\/sub>G<sub>2<\/sub><\/p>\n<\/td>\n<td width=\"54\">\n<p align=\"center\">N<sub>2<\/sub>G<sub>1<\/sub><\/p>\n<\/td>\n<td width=\"60\">\n<p align=\"center\">N<sub>2<\/sub>G<sub>2<\/sub><\/p>\n<\/td>\n<td width=\"60\">\n<p align=\"center\">N<sub>1<\/sub>G<sub>1<\/sub><\/p>\n<\/td>\n<td width=\"60\">\n<p align=\"center\">N<sub>1<\/sub>G<sub>2<\/sub><\/p>\n<\/td>\n<td width=\"66\">\n<p align=\"center\">N<sub>2<\/sub>G<sub>1<\/sub><\/p>\n<\/td>\n<td width=\"66\">\n<p align=\"center\">N<sub>2<\/sub>G<sub>2<\/sub><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"85\">\n<p align=\"center\">1<\/p>\n<\/td>\n<td valign=\"top\" width=\"90\">\n<p align=\"center\">50<\/p>\n<\/td>\n<td valign=\"top\" width=\"60\">\n<p align=\"center\">24<\/p>\n<\/td>\n<td valign=\"top\" width=\"60\">\n<p align=\"center\">24<\/p>\n<\/td>\n<td valign=\"top\" width=\"54\">\n<p align=\"center\">20<\/p>\n<\/td>\n<td valign=\"top\" width=\"60\">\n<p align=\"center\">14<\/p>\n<\/td>\n<td valign=\"top\" width=\"60\">\n<p align=\"center\">32<\/p>\n<\/td>\n<td valign=\"top\" width=\"60\">\n<p align=\"center\">10<\/p>\n<\/td>\n<td valign=\"top\" width=\"66\">\n<p align=\"center\">14<\/p>\n<\/td>\n<td valign=\"top\" width=\"66\">\n<p align=\"center\">12<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"85\">\n<p align=\"center\">2<\/p>\n<\/td>\n<td valign=\"top\" width=\"90\">\n<p align=\"center\">50<\/p>\n<\/td>\n<td valign=\"top\" width=\"60\">\n<p align=\"center\">26<\/p>\n<\/td>\n<td valign=\"top\" width=\"60\">\n<p align=\"center\">22<\/p>\n<\/td>\n<td valign=\"top\" width=\"54\">\n<p align=\"center\">22<\/p>\n<\/td>\n<td valign=\"top\" width=\"60\">\n<p align=\"center\">14<\/p>\n<\/td>\n<td valign=\"top\" width=\"60\">\n<p align=\"center\">30<\/p>\n<\/td>\n<td valign=\"top\" width=\"60\">\n<p align=\"center\">8<\/p>\n<\/td>\n<td valign=\"top\" width=\"66\">\n<p align=\"center\">14<\/p>\n<\/td>\n<td valign=\"top\" width=\"66\">\n<p align=\"center\">10<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"85\">\n<p align=\"center\">3<\/p>\n<\/td>\n<td valign=\"top\" width=\"90\">\n<p align=\"center\">50<\/p>\n<\/td>\n<td valign=\"top\" width=\"60\">\n<p align=\"center\">24<\/p>\n<\/td>\n<td valign=\"top\" width=\"60\">\n<p align=\"center\">26<\/p>\n<\/td>\n<td valign=\"top\" width=\"54\">\n<p align=\"center\">20<\/p>\n<\/td>\n<td valign=\"top\" width=\"60\">\n<p align=\"center\">12<\/p>\n<\/td>\n<td valign=\"top\" width=\"60\">\n<p align=\"center\">32<\/p>\n<\/td>\n<td valign=\"top\" width=\"60\">\n<p align=\"center\">8<\/p>\n<\/td>\n<td valign=\"top\" width=\"66\">\n<p align=\"center\">16<\/p>\n<\/td>\n<td valign=\"top\" width=\"66\">\n<p align=\"center\">10<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td valign=\"top\" width=\"85\">\n<p align=\"center\"><b>TB<\/b><\/p>\n<\/td>\n<td valign=\"top\" width=\"90\">\n<p align=\"center\"><b>\u00a0<\/b><\/p>\n<\/td>\n<td valign=\"bottom\" width=\"60\">\n<p align=\"center\"><b>24.7<\/b><\/p>\n<\/td>\n<td valign=\"bottom\" width=\"60\">\n<p align=\"center\"><b>24.0<\/b><\/p>\n<\/td>\n<td valign=\"bottom\" width=\"54\">\n<p align=\"center\"><b>20.7<\/b><\/p>\n<\/td>\n<td valign=\"bottom\" width=\"60\">\n<p align=\"center\"><b>13.3<\/b><\/p>\n<\/td>\n<td valign=\"bottom\" width=\"60\">\n<p align=\"center\"><b>31.3<\/b><\/p>\n<\/td>\n<td valign=\"bottom\" width=\"60\">\n<p align=\"center\"><b>8.7<\/b><\/p>\n<\/td>\n<td valign=\"bottom\" width=\"66\">\n<p align=\"center\"><b>14.7<\/b><\/p>\n<\/td>\n<td valign=\"bottom\" width=\"66\">\n<p align=\"center\"><b>10.7<\/b><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Trong \u0111\u00f3 nghi\u1ec7m th\u1ee9c N<sub>1<\/sub>G<sub>1<\/sub>(gi\u00e1 th\u1ec3 c\u00e1t v\u00e0 hom ng\u1ecdn ) c\u00f3 t\u1ef7 l\u1ec7 ra r\u1ec5 cao nh\u1ea5t, nghi\u1ec7m th\u1ee9c N<sub>2<\/sub>G<sub>2 <\/sub>(gi\u00e1 th\u1ec3 c\u00e1t tro theo t\u1ef7 l\u1ec7 1:1 v\u00e0 hom k\u1ec1 ng\u1ecdn) c\u00f3 t\u1ef7 l\u1ec7 ra r\u1ec5 th\u1ea5p nh\u1ea5t. Ph\u00e2n t\u00edch b\u1ea3ng ANOVA cho th\u1ea5y s\u1ef1 kh\u00e1c nhau gi\u1eefa hai gi\u00e1 th\u1ec3 th\u00ec r\u1ea5t c\u00f3 \u00fd ngh\u0129a v\u1ec1 m\u1eb7t th\u1ed1ng k\u00ea (P = 0.0003 &lt;&lt;&lt; 0.01), v\u00e0 gi\u1eefa hai lo\u1ea1i hom c\u0169ng r\u1ea5t r\u00f5 (P = 0.015 &lt; 0.05).<\/p>\n<p><b><i>c.\u00a0 \u1ea2nh h\u01b0\u1edfng c\u1ee7a c\u00e1c lo\u1ea1i thu\u1ed1c k\u00edch th\u00edch ra r\u1ec5 v\u00e0 gi\u00e1 th\u1ec3 <\/i><\/b><\/p>\n<p>Th\u00ed nghi\u1ec7m ch\u1ec9 ra r\u1eb1ng: Gi\u00e2m hom tr\u00ean g\u00eda th\u1ec3 c\u00e1t v\u00e0 kh\u00f4ng c\u1ea7n x\u1eed l\u00fd thu\u1ed1c (T<sub>0<\/sub>G<sub>1<\/sub>) v\u1eabn cho t\u1ef7 l\u1ec7 r\u1ec5 cao v\u00e0 c\u00f3 c\u00e1c ch\u1ec9 s\u1ed1 ph\u00e1t tri\u1ec3n r\u1ec5 kh\u00e1. N\u1ebfu s\u1eed d\u1ee5ng th\u00eam ch\u1ea5t k\u00edch th\u00edch IBA th\u00ec c\u1ea3i thi\u1ec7n sinh tr\u01b0\u1edfng chi\u1ec1u d\u00e0i r\u1ec5 t\u1ed1t h\u01a1n (T<sub>2<\/sub>G<sub>1<\/sub>).<\/p>\n<p>Nh\u01b0 v\u1eady \u0111\u1ed1i v\u1edbi gi\u00e2m hom c\u00e2y C\u00f3c h\u00e0nh c\u00f3 th\u1ec3 ch\u1ecdn gi\u00e1 th\u1ec3 c\u00e1t, l\u1ea5y hom ng\u1ecdn v\u00e0 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ch\u1ea5t k\u00edch th\u00edch ra r\u1ec5 IBA ho\u1eb7c kh\u00f4ng \u0111\u1ec1u cho kh\u1ea3 n\u0103ng ra r\u1ec5 cao v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng h\u1ec7 r\u1ec5 t\u1ed1t so v\u1edbi c\u00e1c nghi\u1ec7m th\u1ee9c kh\u00e1c trong th\u00ed nghi\u1ec7m.<\/p>\n<p><b>2.2 \u00a0Th\u00ed nghi\u1ec7m\u00a0 gi\u00e2m hom c\u00e2y tr\u00f4m<\/b><\/p>\n<ol>\n<li><i>\u1ea2nh h\u01b0\u1edfng c\u1ee7a lo\u1ea1i thu\u1ed1c k\u00edch th\u00edch<\/i><\/li>\n<\/ol>\n<p>Ba c\u00f4ng th\u1ee9c\u00a0 th\u00ed nghi\u1ec7m<\/p>\n<p>&#8211; Bo: \u0110\u1ed1i ch\u1ee9ng (kh\u00f4ng s\u1eed d\u1ee5ng thu\u1ed1c)<\/p>\n<p>&#8211; B1: D\u00f9ng thu\u1ed1c b\u1ed9t IBA 500ppm, nh\u00fang hom tr\u01b0\u1edbc khi gi\u00e2m<\/p>\n<p>&#8211; B2: D\u00f9ng thu\u1ed1c th\u01b0\u01a1ng ph\u1ea9m (NZM), nh\u00fang tr\u01b0\u1edbc khi gi\u00e2m.<\/p>\n<p>Hom c\u00e2y Tr\u00f4m \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng thu\u1ed1c th\u01b0\u01a1ng ph\u1ea9m (NZM) c\u00f3 t\u1ef7 l\u1ec7 ra r\u1ec5 v\u00e0 c\u00e1c ch\u1ec9 s\u1ed1 ph\u00e1t tri\u1ec3n r\u1ec5 t\u1ed1t h\u01a1n kh\u00f4ng x\u1eed l\u00ed ho\u1eb7c x\u1eed l\u00ed b\u1eb1ng d\u1ea1ng thu\u1ed1c b\u1ed9t 500ppm.<\/p>\n<p><b>2.3 K\u1ebft qu\u1ea3 th\u00ed nghi\u1ec7m b\u1ea3o qu\u1ea3n h\u1ea1t gi\u1ed1ng Tr\u00f4m<\/b><\/p>\n<p>S\u1ed1 li\u1ec7u tr\u00ean th\u1ea5y, t\u1ef7 l\u1ec7 n\u1ea9y m\u1ea7m nghi\u1ec7m th\u1ee9c II (2 s\u00f4i + 3 l\u1ea1nh) \u0111\u1ea1t t\u1ef7 l\u1ec7 cao nh\u1ea5t (97.8%), th\u1ea5p nh\u1ea5t l\u00e0 nghi\u1ec7m th\u1ee9c IV (n\u01b0\u1edbc s\u00f4i) ( 42.2%). Hai nghi\u1ec7m th\u1ee9c I (ng\u00e2m n\u01b0\u1edbc l\u1ea1nh) v\u00e0 III (3 s\u00f4i + 2 l\u1ea1nh) kh\u00f4ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t r\u00f5 v\u1ec1 m\u1eb7t th\u1ed1ng k\u00ea v\u1ec1 t\u1ef7 l\u1ec7 n\u1ea9y m\u1ea7m. Th\u1ebf n\u1ea3y m\u1ea7m c\u1ee7a nghi\u1ec7m th\u1ee9c II c\u0169ng \u0111\u1ea1t t\u1ef7 l\u1ec7 cao nh\u1ea5t (88.9%) v\u00e0 th\u1ea5p nh\u1ea5t c\u0169ng l\u00e0 nghi\u1ec7m th\u1ee9c IV (d\u00f9ng n\u01b0\u1edbc s\u00f4i).<\/p>\n<p><b>3. Nghi\u00ean c\u1ee9u th\u0103m d\u00f2 s\u1eed d\u1ee5ng ph\u00e2n b\u00f3n <\/b><\/p>\n<p>Nghi\u00ean c\u1ee9u th\u0103m d\u00f2 y\u00e2u c\u1ea7u ph\u00e2n b\u00f3n c\u1ee7a C\u00f3c h\u00e0nh v\u00e0 Tr\u00f4m \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n sau 1 n\u0103m t\u1ea1i B\u00ecnh Thu\u1eadn.K\u1ebft q\u1ee7a cho th\u1ea5y \u0111\u1ecbnh h\u01b0\u1edbng s\u1eed d\u1ee5ng ph\u00e2n L\u00e2n h\u1eefu c\u01a1 vi sinh v\u00e0 than c\u1ee7i t\u1eadn d\u1ee5ng cho tr\u1ed3ng r\u1eebng \u1edf v\u00f9ng kh\u00f4 h\u1ea1n.<\/p>\n<p><b>4. Nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt tr\u1ed3ng <\/b><\/p>\n<p>4.1. X\u00e1c \u0111\u1ecbnh l\u1eadp \u0111\u1ecba tr\u1ed3ng<\/p>\n<p>V\u00f9ng kh\u00f4 h\u1ea1n, n\u01a1i NC ch\u1ee7 y\u1ebfu thu\u1ed9c nh\u00f3m \u0111\u1ea5t c\u00e1t \u2013 k\u00ed hi\u1ec7u l\u00e0 AR (C. Arenosol). Trong s\u1ed1 7 \u0111\u01a1n v\u1ecb (lo\u1ea1i) \u0111\u1ea5t c\u00f3 3 lo\u1ea1i chi\u1ebfm t\u1ef7 l\u1ec7 nhi\u1ec1u nh\u1ea5t l\u00e0 \u0111\u1ea5t c\u1ed3n c\u00e1t tr\u1eafng v\u00e0ng, \u0111\u1ea5t c\u1ed3n c\u00e1t \u0111\u1ecf v\u00e0 \u0111\u1ea5t c\u00e1t \u0111i\u1ec3n h\u00ecnh (H\u1ed9i khoa h\u1ecdc \u0111\u1ea5t Vi\u1ec7t Nam, 2000). Hai lo\u1ea1i \u0111\u1ea7u r\u1ea5t quan tr\u1ecdng v\u00e0 ch\u1ee7 y\u1ebfu \u1edf v\u00f9ng ven bi\u1ec3n, kh\u00f4 h\u1ea1n n\u01a1i nghi\u00ean c\u1ee9u.<\/p>\n<p><i>\u0110\u1ea5t c\u00e1t \u0111\u1ecf (RHODIC ARENOSOLS)<\/i><\/p>\n<p>V\u1ec1 t\u00ednh ch\u1ea5t chung c\u1ee7a nh\u00f3m \u0111\u1ea5t c\u00e1t \u0111\u1ecf l\u00e0: th\u00e0nh ph\u1ea7n c\u01a1 gi\u1edbi nh\u1eb9 theo chi\u1ec1u s\u00e2u ph\u1eabu di\u1ec7n. T\u1ef7 l\u1ec7 c\u00e1t chi\u1ebfm ch\u1ee7 y\u1ebfu kho\u1ea3ng 80-90%, limon v\u00e0 s\u00e9t ch\u1ec9 chi\u1ebfm d\u01b0\u1edbi 20%, s\u00e9t th\u01b0\u1eddng d\u01b0\u1edbi 5%. Di\u1ec7n t\u00edch: 77.000 ha, ch\u1ee7 y\u1ebfu \u1edf t\u1ec9nh B\u00ecnh Thu\u1eadn.\u0110\u1ed9 \u1ea9m \u0111\u1ea5t thay \u0111\u1ed5i theo m\u00f9a, t\u1eeb th\u00e1ng 12 \u0111\u1ebfn th\u00e1ng 4 r\u1ea5t kh\u00f4 ch\u1ec9 0,6-0,9% v\u00e0 t\u1ea7ng c\u00e1t kh\u00f4 n\u00e0y s\u00e2u t\u1eeb t\u1edbi 100 cm t\u1eeb m\u1eb7t \u0111\u1ea5t v\u00e0 t\u1eeb 100-150cm th\u00ec \u0111\u1ed9 \u1ea9m m\u1edbi \u0111\u1ea1t 1-1,5%. T\u1eeb th\u00e1ng 5- 8 t\u0103ng t\u1eeb 1,1-2,2% \u1edf \u0111\u1ed9 s\u00e2u t\u1eeb 0-50cm v\u00e0 \u0111\u1ea1t 7-8,5% \u1edf \u0111\u1ed9 s\u00e2u 150-200 cm. T\u1ef7 l\u1ec7 s\u00e9t v\u1eadt l\u00fd c\u00f3 kh\u00e1 h\u01a1n (6-10%), c\u1ea5p h\u1ea1t c\u00e1t kho\u1ea3ng 68-72%. H\u00e0m l\u01b0\u1ee3ng ch\u1ea5t h\u1eefu c\u01a1, dinh d\u01b0\u1ee1ng N,P,K cation ki\u1ec1m trao \u0111\u1ed5i th\u01b0\u1eddng cao h\u01a1n\u00a0 \u0111\u1ea5t c\u00e1t v\u00e0ng v\u00e0 \u0111\u1ea5t c\u00e1t tr\u1eafng. H\u00e0m l\u01b0\u1ee3ng m\u00f9n kh\u1ecfang 1,0-1,1%, \u0111\u1ea1m t\u1ed5ng s\u1ed1 kh\u1ecfang 0,1%. L\u00e2n v\u00e0 Ka li ngh\u00e8o \u1edf\u00a0 kh\u1ecfang 0,03% v\u00e0 0,05%. Do \u0111\u00f3, tr\u00ean lo\u1ea1i \u0111\u1ea5t n\u00e0y h\u00ecnh th\u00e0nh \u0111\u01b0\u1ee3c c\u00e1c th\u1ea3m c\u00e2y t\u1ef1 nhi\u00ean, c\u00e2y b\u1ee5i, c\u00e2y gai, l\u00e0m t\u0103ng kh\u1ea3 n\u0103ng c\u1ed1 \u0111\u1ecbnh c\u1ee7a lo\u1ea1i \u0111\u1ea5t n\u00e0y. Do th\u01b0\u1eddng ph\u00e2n b\u1ed1 \u1edf \u0111\u1ecba h\u00ecnh b\u1eb1ng ph\u1eb3ng, n\u00ean c\u00f3 th\u1ec3 ph\u00f9 h\u1ee3p cho m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y n\u00f4ng l\u00e2m nghi\u1ec7p.<\/p>\n<p><i>\u0110\u1ea5t c\u00e1t tr\u1eafng v\u00e0ng (LUVIC ARENOSOLS):<\/i><\/p>\n<p>Di\u1ec7n t\u00edch kho\u1ea3ng 222.000 ha, th\u01b0\u1eddng ph\u00e2n b\u1ed1 \u1edf v\u00e0nh ngo\u00e0i s\u00e1t bi\u1ec3n, \u0111an xen v\u1edbi gi\u1ea3i \u0111\u1ea5t ph\u00f9 sa \u1edf v\u00f9ng \u0111\u1ed3ng b\u1eb1ng k\u00e9o d\u00e0i t\u1eeb Ngh\u1ec7 T\u0129nh \u0111\u1ebfn Ninh Thu\u1eadn, B\u00ecnh Thu\u1eadn. C\u00f3 n\u01a1i c\u1ed3n c\u00e1t cao t\u1edbi 200-300m, t\u00f9y theo \u0111\u1ecba h\u00ecnh n\u00f3 c\u00f3 th\u1ec3 l\u00e0 c\u1ed3n c\u00e1t \u0111\u00e3 c\u1ed1 \u0111\u1ecbnh ho\u1eb7c \u0111ang c\u00f2n di \u0111\u1ed9ng. Lo\u1ea1i \u0111\u1ea5t n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ch\u1ee7 y\u1ebfu trong l\u00e2m nghi\u1ec7p (h\u01a1n 151.000 ha) (S\u00e2m, 2001). T\u00f9y theo q\u00faa tr\u00ecnh h\u00ecnh th\u00e0nh, lo\u00e0i \u0111\u1ea5t n\u00e0y \u0111\u01b0\u1ee3c ph\u00e2n th\u00e0nh 3 lo\u1ea1i:<\/p>\n<p>\u0110\u1ea5t c\u00e1t tr\u1eafng v\u00e0ng m\u1edbi b\u1ed3i ven bi\u1ec3n; \u0111\u1ea5t c\u1ed3n c\u00e1t di \u0111\u1ed9ng; \u0111\u1ea5t c\u00e1t c\u1ed1 \u0111\u1ecbnh.<\/p>\n<p>K\u1ebft q\u1ee7a \u0111i\u1ec1u tra sinh tr\u01b0\u1edfng c\u1ee7a ba lo\u00e0i c\u00e2y NC tr\u00ean c\u00e1c lo\u1ea1i \u0111\u1ea5t n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1ed1ng k\u00ea.<\/p>\n<p><b>4.2 \u00a0K\u1ebft qu\u1ea3 tr\u1ed3ng r\u1eebng tr\u00ean l\u1eadp \u0111\u1ecba \u0111\u1ea5t c\u00e1t \u0111\u1ecf <\/b><\/p>\n<p><b>Nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt l\u00e0m \u0111\u1ea5t: <\/b>Hai nghi\u1ec7m th\u1ee9c<\/p>\n<ul>\n<li>D\u1ecdn th\u1ef1c b\u00ec b\u1eb1ng th\u1ee7 c\u00f4ng ph\u00e1t ch\u1eb7t c\u00e2y b\u1ee5i, cu\u1ed1c h\u1ed1 tr\u1ed3ng, kh\u00f4ng b\u00f3n ph\u00e2n, c\u1ef1 li tr\u1ed3ng 3x4m.<\/li>\n<li>Ph\u00e1t v\u00e0 d\u1ecdn th\u1ef1c b\u00ec b\u1eb1ng th\u1ee7 c\u00f4ng, c\u00e0y to\u00e0n di\u1ec7n b\u1eb1ng c\u00e0y 3 ch\u1ea3o 2 l\u1ea7n \u0111\u1ea1t \u0111\u1ed9 s\u00e2u 30 cm. Sau \u0111\u00f3 cu\u1ed1c h\u1ed1 tr\u1ed3ng c\u00e2y kh\u00f4ng b\u00f3n ph\u00e2n, c\u1ef1 li tr\u1ed3ng 3x4m.<\/li>\n<\/ul>\n<p><b><span style=\"text-decoration: underline\">K\u1ebft q\u1ee7a:<\/span><\/b><\/p>\n<p>&#8211;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 T\u1ef7 l\u1ec7 s\u1ed1ng c\u1ee7a vi\u1ec7c c\u00e0y \u0111\u1ea5t cho t\u1ef7 l\u1ec7 s\u1ed1ng c\u1ee7a c\u1ea3 ba lo\u00e0i cao h\u01a1n r\u1ea5t nhi\u1ec1u so v\u1edbi kh\u00f4ng c\u00e0y.<\/p>\n<p>&#8211;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Th\u1ea5p nh\u1ea5t l\u00e0 C\u00f3c h\u00e0nh, kh\u1ea3 n\u0103ng c\u1ea1nh tranh v\u1edbi c\u00e2y b\u1ee5i v\u00e0 c\u1ecf gi\u1ea5y r\u1ea5t k\u00e9m. T\u1ef7 l\u1ec7 s\u1ed1ng ch\u1ec9 10% n\u1ebfu kh\u00f4ng c\u00e0y \u0111\u1ea5t.<\/p>\n<p>&#8211;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C\u00e1c ch\u1ec9 s\u1ed1 kh\u00e1c v\u1ec1 sinh tr\u01b0\u1edfng H v\u00e0 D c\u1ee7a n\u01a1i c\u00e0y \u0111\u1ea5t t\u1ed1t h\u01a1n so v\u1edbi kh\u00f4ng c\u00e0y \u0111\u1ea5t kh\u00e1 r\u00f5: sau 1 n\u0103m tr\u1ed3ng, H v\u00e0 D C\u00f3c h\u00e0nh \u0111\u00e3 t\u0103ng 5,2 % v\u00e0 13,3 %. T\u01b0\u01a1ng t\u1ef1, Tr\u00f4m l\u00e0: 1,5% v\u00e0 20%. C\u00f2n S\u00f2 \u0111o vi\u1ec7c c\u00e0y \u0111\u1ea5t c\u00f3 hi\u1ec7u q\u1ee7a r\u1ea5t r\u00f5 r\u1ec7t, c\u00e1c chi s\u1ed1 t\u01b0\u01a1ng \u1ee9ng l\u00e0 95,5 % v\u00e0 66,6%;<\/p>\n<p><b>Nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt b\u00f3n ph\u00e2n<\/b>: Th\u00ed nghi\u1ec7m g\u1ed3m 5 nghi\u1ec7m th\u1ee9c:<\/p>\n<ul>\n<li>B\u00f3n l\u00f3t 1kg ph\u00e2n vi sinh\/h\u1ed1 tr\u01b0\u1edbc khi tr\u1ed3ng. K\u00ed hi\u1ec7u I<\/li>\n<li>B\u00f3n l\u00f3t 0.5kg vi sinh + 0.2kg DAP\/h\u1ed1. K\u00ed hi\u1ec7u II.<\/li>\n<li>B\u00f3n l\u00f3t 1 kg than c\u1ee7i v\u1ee5n \/h\u1ed1. K\u00ed hi\u1ec7u III.<\/li>\n<li>B\u00f3n l\u00f3t 0,5 kg than c\u1ee7i v\u1ee5n\/h\u1ed1. K\u00ed hi\u1ec7u IV<\/li>\n<li>Kh\u00f4ng b\u00f3n ph\u00e2n. K\u00ed hi\u1ec7u V<\/li>\n<\/ul>\n<p><b>K\u1ebft q\u1ee7a:<\/b><\/p>\n<p>Sau 3 n\u0103m, d\u00f9 ch\u01b0a c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c nghi\u1ec7m th\u1ee9c v\u1ec1 t\u0103ng tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh khi ph\u00e2n t\u00edch ANOVA, song v\u1eabn c\u00f3 s\u1ef1 v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 sinh tr\u01b0\u1edfng c\u1ee7a c\u00e1c c\u00f4ng th\u1ee9c c\u00f3 b\u00f3n ph\u00e2n so \u0111\u1ed1i ch\u1ee9ng. C\u00f4ng th\u1ee9c b\u00f3n than (c\u00f4ng th\u1ee9c 1 v\u00e0 3) v\u00e0 b\u00f3n vi sinh (c\u00f4ng th\u1ee9c 4) \u0111\u1ec1u cho c\u00f3 sinh tr\u01b0\u1edfng t\u1ed1t h\u01a1n \u0111\u1ed1i ch\u1ee9ng ho\u1eb7c b\u00f3n ph\u00e2n v\u00f4 c\u01a1 ph\u1ed1i h\u1ee3p vi sinh (c\u00f4ng th\u1ee9c 2).<\/p>\n<p><b>Th\u00ed nghi\u1ec7m m\u1eadt \u0111\u1ed9 tr\u1ed3ng <\/b><\/p>\n<p>&#8211;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Tr\u1ed3ng S\u00f2 \u0111o m\u1eadt \u0111\u1ed9 d\u00e0y t\u1edbi 3330 c\/ha, c\u00f3 c\u00e1c ch\u1ec9 ti\u00eau t\u1ef7 l\u1ec7 s\u1ed1ng, ph\u1ea9m ch\u1ea5t c\u00e2y v\u00e0 sinh tr\u01b0\u1edfng \u0111\u1ec1u kh\u00e1 h\u01a1n so c\u00e1c m\u1eadt \u0111\u1ed9 kh\u00e1c.<\/p>\n<p>&#8211;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Sau 1 n\u0103m tr\u1ed3ng, ch\u01b0a c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 v\u1ec1 sinh tr\u01b0\u1edfng chi\u1ec1u cao, \u0111\u01b0\u1eddng k\u00ednh gi\u1eefa c\u00e1c m\u1eadt \u0111\u1ed9 tr\u1ed3ng kh\u00e1c nhau c\u1ee7a Tr\u00f4m.<\/p>\n<p><b>K\u1ebft q\u1ee7a tr\u1ed3ng v\u01b0\u1eddn s\u01b0u t\u1eadp- 2 ha t\u1ea1i B\u00ecnh thu\u1eadn<\/b><\/p>\n<p>\u0110\u1ec1 t\u00e0i \u0111\u00e3 s\u01b0u t\u1eadp 10 lo\u00e0i c\u00e2y \u0111\u01b0\u1ee3c ch\u1ecdn v\u00e0 tr\u1ed3ng: T\u1ef7 l\u1ec7 s\u1ed1ng\u00a0 cao nh\u1ea5t sau 2 n\u0103m tr\u1ed3ng l\u00e0 nh\u00f3m l\u00f2ai C\u00f3c h\u00e0nh, S\u00f2 \u0110o, Tr\u00f4m\u00a0 v\u1edbi t\u1ef7 l\u1ec7 s\u1ed1ng t\u1eeb 86,1 % &#8211; 95,9 %, \u0111\u00e2y ch\u00ednh l\u00e0 3 lo\u00e0i \u0111\u00e3 \u0111\u01b0\u1ee3c NC th\u0103m d\u00f2 k\u1ef9 thu\u1eadt tr\u1ed3ng.\u00a0 K\u1ebf ti\u1ebfp l\u00e0 nh\u00f3m c\u00e2y Me ng\u1ecdt, G\u00f5 \u0111\u1ecf c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng g\u1ea7n 80%, V\u00ean v\u00ean v\u00e0 Xoay t\u1eeb 51,9 % &#8211; 52,6% th\u1ea5p nh\u1ea5t l\u00e0 nh\u00f3m c\u00e2y S\u1ebfn c\u00e1t, D\u1ea7u c\u00e1t, t\u1ef7 l\u1ec7 s\u1ed1ng 30,4-35,3 %.<\/p>\n<p>K\u1ebeT LU\u1eacN V\u00c0 KI\u1ebeN NGH\u1eca<\/p>\n<p><b>1) X\u00e1c \u0111\u1ecbnh lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba<\/b><\/p>\n<p>M\u01b0\u1eddi (9) lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba c\u00f3 g\u00eda kinh t\u1ebf v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng g\u00e2y tr\u1ed3ng tr\u00ean v\u00f9ng \u0111\u1ea5t c\u00e1t ven bi\u1ec3n Ninh Thu\u1eadn , B\u00ecnh Thu\u1eadn \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh \u0110\u00f3 l\u00e0 : <i>Tr\u00f4m, C\u00f3c h\u00e0nh, S\u00f2 \u0111o, Me ng\u1ecdt, Me keo, V\u00ean v\u00ean, Xoay, G\u00f5 \u0111\u1ecf, S\u1ebfn c\u00e1t, D\u1ea7u c\u00e1t.<\/i> Ri\u00eang c\u00e2y Me keo ch\u01b0a x\u00e1c \u0111\u1ecbnh d\u01b0\u1ee3c kh\u1ea3 n\u0103ng tr\u1ed3ng.<\/p>\n<p>2)\u00a0 <b>K\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng<\/b><\/p>\n<p>+KT x\u1eed l\u00ed h\u1ea1t Tr\u00f4m: Ng\u00e2m h\u1ea1t trong n\u01b0\u1edbc c\u00f3 t\u1ef7 l\u1ec7 2 s\u00f4i + 3 l\u1ea1nh trong 12h r\u1ed3i \u0111em h\u1ea1t \u0111i \u1ee7 cho k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t.<\/p>\n<p>B\u1ea3o qu\u1ea3n h\u1ea1t Tr\u00f4m \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p nh\u01b0 t\u1ee7 \u0111\u00e1 (-12<sup>0 <\/sup>C), t\u1ee7 l\u1ea1nh (5<sup>0<\/sup>C) v\u00e0 t\u1ee7 m\u00e1t (9<sup>0<\/sup>C) c\u00f3 t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m, th\u1ebf n\u1ea3y m\u1ea7m cao h\u01a1n so v\u1edbi kh\u00f4ng b\u1ea3o qu\u1ea3n ho\u1eb7c x\u1eed l\u00ed b\u1eb1ng d\u1ea1ng thu\u1ed1c b\u1ed9t 500ppm.<\/p>\n<p>+ Nh\u00e2n gi\u1ed1ng c\u00e2y C\u00f3c h\u00e0nh: C\u00f3 th\u1ec3 ch\u1ecdn gi\u00e1 th\u1ec3 c\u00e1t, l\u1ea5y hom ng\u1ecdn v\u00e0 s\u1eed d\u1ee5ng ch\u1ea5t k\u00edch th\u00edch ra r\u1ec5 IBA (ho\u1eb7c kh\u00f4ng) \u0111\u1ec3 gi\u00e2m hom.<\/p>\n<p>+ Nh\u00e2n gi\u1ed1ng c\u00e2y Tr\u00f4m: Hom c\u00e2y Tr\u00f4m \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng thu\u1ed1c th\u01b0\u01a1ng ph\u1ea9m c\u00f3 t\u1ef7 l\u1ec7 ra r\u1ec5 v\u00e0 c\u00e1c ch\u1ec9 s\u1ed1 ph\u00e1t tri\u1ec3n r\u1ec5 t\u1ed1t h\u01a1n kh\u00f4ng x\u1eed l\u00ed<\/p>\n<p>3). <b>X\u00e1c \u0111\u1ecbnh l\u1eadp \u0111\u1ecba g\u00e2y tr\u1ed3ng<\/b>: C\u00f3 th\u1ec3 <b>ch\u1ecdn \u0111\u1ea5t c\u00e1t \u0111\u1ecf <\/b>(<i>Rhodic arenosol<\/i>) trong<b> <\/b>s\u1ed1 7 lo\u1ea1i \u0111\u1ea5t \u0111\u01b0\u1ee3c \u0111i\u1ec1u tra t\u1ea1i Ninh Thu\u1eadn t\u1ea1i B\u00ecnh Thu\u1eadn \u0111\u1ec3 g\u00e2y tr\u1ed3ng Tr\u00f4m, C\u00f3c h\u00e0nh v\u00e0 S\u00f2 \u0110o.<\/p>\n<p>4).<b>Th\u00ed nghi\u1ec7m trong ch\u1eadu <\/b>\u0111\u00e3 ch\u1ee9ng t\u1ecf r\u1eb1ng s\u1eed d\u1ee5ng ph\u00e2n vi sinh ph\u1ed1i h\u1ee3p v\u1edbi than l\u00e0 r\u1ea5t t\u1ed1t \u0111\u1ed1i v\u1edbi sinh tr\u01b0\u1edfng c\u1ee7a Tr\u00f4m, C\u00f3c h\u00e0nh v\u00e0 S\u00f2 \u0111o tr\u00ean c\u00e1c lo\u1ea1i \u0111\u1ea5t c\u00e1t. \u0110\u00e2y l\u00e0 c\u01a1 s\u1edf cho c\u00e1c th\u1eed nghi\u1ec7m b\u00f3n than v\u00e0 vi sinh\u00a0 trong tr\u1ed3ng \u1edf v\u00f9ng \u0111\u1ea5t c\u00e1t \u0111\u1ecf B\u00ecnh Thu\u1eadn.<\/p>\n<p>5).<b>Th\u00ed nghi\u1ec7m c\u00e0y \u0111\u1ea5t<\/b>: Tr\u01b0\u1edbc khi tr\u1ed3ng t\u1ed1t nh\u1ea5t c\u00e0y \u0111\u1ea5t hai l\u1ea7n b\u1eb1ng c\u00e0y 3 ch\u1ea3o c\u00f3 \u0111\u1ed9 s\u00e2u 30 cm.<\/p>\n<p>6). <b>B\u00f3n ph\u00e2n cho r\u1eebng<\/b>: C\u00f3 th\u1ec3 b\u00f3n l\u00f3t ph\u00e2n vinh sinh ho\u1eb7c b\u00f3n than v\u1edbi li\u1ec1u l\u01b0\u1ee3ng 1 kg\/c\u00e2y. C\u0169ng c\u00f3 th\u1ec3 b\u00f3n l\u00f3t \u0111\u1ebfn 3 kg ph\u00e2n h\u1eefu c\u01a1 n\u1ebfu ngu\u1ed3n ph\u00e2n d\u1ed3i d\u00e0o v\u00e0 t\u00e0i ch\u00ednh cho ph\u00e9p.<\/p>\n<p>7). <b>V\u1ec1 m\u1eadt \u0111\u1ed9 tr\u1ed3ng<\/b>: Th\u1eddi gian c\u00f2n q\u00faa ng\u1eafn \u0111\u1ec3 k\u1ebft lu\u1eadn v\u1ec1 m\u1eadt \u0111\u1ed9 tr\u1ed3ng S\u00f2 \u0111o v\u00e0 Tr\u00f4m, c\u1ea7n \u0111\u01b0\u1ee3c NC ti\u1ebfp.<\/p>\n<p>8).<b>X\u00e2y d\u1ef1ng v\u01b0\u1eddn s\u01b0u t\u1eadp<\/b>: \u0110\u00e3 tr\u1ed3ng 10 lo\u00e0i. K\u1ebft q\u1ee7a t\u1ef7 l\u1ec7 s\u1ed1ng t\u01b0\u01a1ng \u0111\u1ed1i t\u1ed1t, c\u00f3 8 l\u00f2ai c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng &gt;50%. Cao nh\u1ea5t thu\u1ed9c v\u1ec1 3 lo\u00e0i nh\u01b0 \u0111\u00e3 ch\u1ecdn \u0111\u1ec3 NC k\u1ef9 thu\u1eadt. Th\u1ea5p nh\u1ea5t l\u00e0 S\u1ebfn c\u00e1t v\u00e0 D\u1ea7u c\u00e1t. C\u1ea7n c\u00f3 NC ti\u1ebfp t\u1ee5c v\u1ec1 k\u1ef9 thu\u1eadt \u0111\u1ec3 n\u00e2ng cao t\u1ef7 l\u1ec7 s\u1ed1ng c\u1ee7a c\u00e1c lo\u00e0i th\u1eed nghi\u1ec7m.<\/p>\n<p><b>Ki\u1ebfn ngh\u1ecb <\/b><\/p>\n<p>K\u00ednh \u0111\u1ec1 ngh\u1ecb n\u00ean \u0111\u1ea7u t\u01b0 NC s\u00e2u h\u01a1n cho lo\u00e0i c\u00e2y Tr\u00f4m, m\u1ed9t lo\u00e0i c\u00e2y \u0111ang c\u00f3 nhu c\u1ea7u th\u1ecb tr\u01b0\u1eddng r\u1ea5t l\u1edbn, c\u00f3 g\u00eda tr\u1ecb kinh t\u1ebf v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng ph\u00e1t tri\u1ec3n m\u1edf r\u1ed9ng t\u1ea1i Ninh Thu\u1eadn v\u00e0 B\u00ecnh Thu\u1eadn.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>TS. Ph\u1ea1m Th\u1ebf D\u0169ng I. \u0110\u1eb6T V\u1ea4N \u0110\u1ec0 V\u00c0 T\u1ed4NG QUAN NGHI\u00caN C\u1ee8U Nhi\u1ec1u n\u0103m qua, vi\u1ec7c g\u00e2y tr\u1ed3ng c\u00e1c lo\u00e0i c\u00e2y c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf tr\u00ean v\u00f9ng \u0111\u1ea5t Ninh Thu\u1eadn, B\u00ecnh Thu\u1eadn \u0111ang g\u1eb7p nhi\u1ec1u kh\u00f3 kh\u0103n. \u0110\u00e3 c\u00f3 h\u00e0ng ng\u00e0n ha r\u1eebng tr\u1ed3ng b\u1ecb ch\u1ebft\u00a0 do kh\u00f4 h\u1ea1n, c\u00f2n l\u1ea1i c\u0169ng sinh [&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\/13112"}],"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=13112"}],"version-history":[{"count":1,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/13112\/revisions"}],"predecessor-version":[{"id":13114,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/13112\/revisions\/13114"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=13112"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=13112"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=13112"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}