{"id":7156,"date":"2018-12-14T13:59:18","date_gmt":"2018-12-14T06:59:18","guid":{"rendered":"https:\/\/alphaglobal.thuythu.com\/?p=7156"},"modified":"2018-12-14T14:02:06","modified_gmt":"2018-12-14T07:02:06","slug":"vai-tro-cac-nguyen-to-khoang-va-bieu-hien-cua-cay-trong","status":"publish","type":"post","link":"https:\/\/demo8.thuythu.com\/alphaglobal\/2018\/12\/14\/vai-tro-cac-nguyen-to-khoang-va-bieu-hien-cua-cay-trong\/","title":{"rendered":"Vai tr\u00f2 c\u00e1c nguy\u00ean t\u1ed1 kho\u00e1ng v\u00e0 bi\u1ec3u hi\u1ec7n c\u1ee7a c\u00e2y tr\u1ed3ng"},"content":{"rendered":"<p>Khi ph\u00e2n t\u00edch th\u00e0nh ph\u1ea7n c\u1ee7a th\u1ef1c v\u1eadt, ng\u01b0\u1eddi ta \u0111\u00e3 t\u00ecm ra s\u1ef1 c\u00f3 m\u1eb7t c\u1ee7a kho\u1ea3ng 60 nguy\u00ean t\u1ed1 h\u00f3a h\u1ecdc. Tuy nhi\u00ean, ch\u1ec9 m\u1ed9t s\u1ed1 nguy\u00ean t\u1ed1 l\u00e0 t\u1ed1i c\u1ea7n thi\u1ebft cho c\u00e2y tr\u1ed3ng. C\u00e1c nguy\u00ean t\u1ed1 n\u00e0y \u0111\u01b0\u1ee3c chia th\u00e0nh 3 nh\u00f3m d\u1ef1a v\u00e0o nhu c\u1ea7u c\u1ee7a c\u00e2y tr\u1ed3ng nh\u01b0 sau:<\/p>\n<ul>\n<li><strong><em>C\u00e1c nguy\u00ean t\u1ed1 \u0111a l\u01b0\u1ee3ng g\u1ed3m<\/em><\/strong>: Nit\u01a1 (N), Photpho (P) v\u00e0 Kali (K)<\/li>\n<li><strong><em>C\u00e1c nguy\u00ean t\u1ed1 trung l\u01b0\u1ee3ng g\u1ed3m<\/em><\/strong>: Magie (Mg), Canxi (Ca), L\u01b0u hu\u1ef3nh (S) v\u00e0 Silic (Si)<\/li>\n<li><strong><em>C\u00e1c nguy\u00ean t\u1ed1 vi l\u01b0\u1ee3ng g\u1ed3m<\/em><\/strong>: Mangan (Mn), K\u1ebdm (Zn), \u0110\u1ed3ng (Cu), Molipden (M), Bo (B), S\u1eaft (Fe)<\/li>\n<\/ul>\n<h5><em>1 .\u00a0Nit\u01a1 (N): Nit\u01a1 trong c\u00e2y chi\u1ebfm t\u1eeb 1-3% tr\u1ecdng l\u01b0\u1ee3ng ch\u1ea5t kh\u00f4 v\u00e0 c\u00f3 vai tr\u00f2 quan tr\u1ecdng b\u1eadc nh\u1ea5t \u0111\u1ed1i v\u1edbi c\u00e2y tr\u1ed3ng, thi\u1ebfu N, c\u00e2y kh\u00f4ng th\u1ec3 s\u1ed1ng \u0111\u01b0\u1ee3c.<\/em><\/h5>\n<ul>\n<li><em><strong>Vai tr\u00f2 c\u1ee7a N \u0111\u1ed1i v\u1edbi th\u1ef1c v\u1eadt.<\/strong><\/em><\/li>\n<\/ul>\n<p>\u2013 Nit\u01a1 c\u00f3 m\u1eb7t trong r\u1ea5t nhi\u1ec1u h\u1ee3p ch\u1ea5t h\u1eefu c\u01a1 quan tr\u1ecdng, c\u00f3 vai tr\u00f2 quy\u1ebft \u0111\u1ecbnh trong qu\u00e1 tr\u00ecnh trao \u0111\u1ed5i ch\u1ea5t v\u00e0 n\u0103ng l\u01b0\u1ee3ng c\u0169ng nh\u01b0 c\u00e1c ho\u1ea1t \u0111\u1ed9ng sinh l\u00fd c\u1ee7a c\u00e2y.<\/p>\n<p>\u2013 N tham gia c\u1ea5u t\u1ea1o Protein \u2013 l\u00e0 th\u00e0nh ph\u1ea7n c\u1ea5u tr\u00fac quan tr\u1ecdng c\u1ee7a ch\u1ea5t nguy\u00ean sinh v\u00e0 c\u00e1c enzim.<\/p>\n<p>\u2013 N tham gia c\u1ea5u t\u1ea1o acid nucleic \u2013 nh\u00e2n c\u1ee7a t\u1ebf b\u00e0o, l\u00e0 v\u1eadt ch\u1ea5t quy\u1ebft \u0111\u1ecbnh t\u00ednh di truy\u1ec1n c\u1ee7a th\u1ef1c v\u1eadt.<\/p>\n<p>\u2013 N c\u00f2n l\u00e0 th\u00e0nh ph\u1ea7n c\u1ee7a di\u1ec7p l\u1ee5c, t\u1ed5ng h\u1ee3p c\u00e1c h\u1ee3p ch\u1ea5t h\u1eefu c\u01a1 c\u1ee7a c\u01a1 th\u1ec3 th\u1ef1c v\u1eadt.<\/p>\n<p>\u2013 N l\u00e0 th\u00e0nh ph\u1ea7n c\u1ee7a c\u00e1c vitamin quan tr\u1ecdng nh\u01b0: B1, B2, B6\u2026<\/p>\n<p>V\u1edbi nh\u1eefng vai tr\u00f2 quan tr\u1ecdng tr\u00ean, N quy\u1ebft \u0111\u1ecbnh to\u00e0n b\u1ed9 s\u1ef1 s\u1ed1ng c\u0169ng nh\u01b0 n\u0103ng su\u1ea5t c\u1ee7a c\u00e2y tr\u1ed3ng. Tuy nhi\u00ean, N c\u0169ng c\u00f3 t\u00e1c d\u1ee5ng hai m\u1eb7t \u0111\u1ebfn c\u00e2y tr\u1ed3ng. N\u1ebfu th\u1eeba ho\u1eb7c thi\u1ebfu N \u0111\u1ec1u g\u00e2y h\u1ea1i \u0111\u1ebfn c\u00e2y.<\/p>\n<ul>\n<li><strong>C\u00e1c d\u1ea1ng N c\u00e2y h\u1ea5p th\u1ee5<\/strong>: C\u00e2y h\u1ea5p thu ngu\u1ed3n N ch\u1ee7 y\u1ebfu trong \u0111\u1ea5t d\u01b0\u1edbi hai d\u1ea1ng mu\u1ed1i amon (NH4+) v\u00e0 mu\u1ed1i Nitrate (NO3-)<\/li>\n<\/ul>\n<p>\u2013 \u0110\u1ea1m Amon (NH4+): \u0111\u01b0\u1ee3c c\u00e2y h\u1ea5p thu d\u01b0\u1edbi d\u1ea1ng c\u00e1c mu\u1ed1i. \u1ede th\u1ec3 t\u1ef1 do NH3 g\u00e2y \u0111\u1ed9c cho c\u00e2y. Nh\u1eefng c\u00e2y c\u00f3 h\u00e0m l\u01b0\u1ee3ng gluxit cao (T\u1ef7 l\u1ec7 C\/N cao) th\u01b0\u1eddng c\u00f3 kh\u1ea3 n\u0103ng h\u00fat nhi\u00eau NH4+. Ngo\u00e0i ra, pH c\u1ee7a m\u00f4i tr\u01b0\u1eddng c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng h\u00fat \u0111\u1ea1m amon c\u1ee7a c\u00e2y. \u1ede m\u00f4i tr\u01b0\u1eddng pH t\u1eeb trung t\u00ednh \u0111\u1ebfn ki\u1ec1m, c\u00e2y \u01b0u ti\u1ebfn h\u00fat m\u1ea1nh \u0111\u1ea1m amon. V\u00ec v\u1eady, nh\u01b0ng ion l\u00e0m th\u00e2y \u0111\u1ed5i m\u00f4i tr\u01b0\u1eddng pH nh\u01b0 Ca2+ c\u0169ng l\u00e0m th\u00e2y \u0111\u1ed5i kh\u1ea3 n\u0103ng h\u00fat c\u00e1c lo\u1ea1i \u0111\u1ea1m c\u1ee7a c\u00e2y<\/p>\n<p>\u2013 \u0110\u1ea1m Nitrate (NO3-): \u0110\u00e2y l\u00e0 mu\u1ed1i c\u00f3 t\u00ednh ki\u1ec1m n\u00ean khi c\u00e2y h\u00fat \u0111\u1ea1m d\u01b0\u1edbi d\u1ea1ng Nitrate s\u1ebd \u0111\u1ec3 l\u1ea1i nhi\u1ec1u g\u1ed1c ki\u1ec1m trong \u0111\u1ea5t (Mu\u1ed1i amon l\u00e0 mu\u1ed1i chua sinh l\u00fd). Trong m\u00f4i tr\u01b0\u1eddng pH th\u1ea5p c\u00f3 t\u00ednh acid, c\u00e2y s\u1ebd \u01b0u ti\u00ean h\u00fat \u0111\u1ea1m NO3- nhi\u1ec1u h\u01a1n<\/p>\n<p>\u2013 Ngo\u00e0i ra, s\u1ef1 h\u1ea5p thu \u0111\u1ea1m Amon hay \u0111\u1ea1m Nitrate c\u00f2n ph\u1ee5 thu\u1ed9c t\u1eebng lo\u1ea1i c\u00e2y. C\u1ea3 2 lo\u1ea1i mu\u1ed1i tr\u00ean \u0111\u1ec1u g\u00e2y m\u1ea5t c\u00e2n b\u1eb1ng pH trong \u0111\u1ea5t. Ri\u00eang mu\u1ed1i NH4NO3 l\u00e0 mu\u1ed1i trung t\u00ednh n\u00ean \u00edt \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn pH \u0111\u1ea5t v\u00e0 \u0111\u01b0\u1ee3c c\u00e2y tr\u1ed3ng h\u1ea5p thu d\u1ec5 d\u00e0ng.<\/p>\n<ul>\n<li><strong>Bi\u1ec3u hi\u1ec7n c\u1ee7a c\u00e2y tr\u1ed3ng \u0111\u1ed1i v\u1edbi N<\/strong>:<\/li>\n<\/ul>\n<p>\u2013 Khi thi\u1ebfu N, c\u00e2y sinh tr\u01b0\u1edfng ph\u00e1t tri\u1ec3n k\u00e9m, c\u00f2i c\u1ecdc, di\u1ec7p l\u1ee5c kh\u00f4ng h\u00ecnh th\u00e0nh, l\u00e1 chuy\u1ec3n m\u00e0u v\u00e0ng, nh\u1ecf, \u0111\u1ebb nh\u00e1nh v\u00e0 ph\u00e2n c\u00e0nh k\u00e9m, ho\u1ea1t \u0111\u1ed9ng quang h\u1ee3p v\u00e0 t\u00edch l\u0169y gi\u1ea3m s\u00fat nghi\u00eam tr\u1ecdng, d\u1eabn t\u1edbi suy gi\u1ea3m n\u0103ng su\u1ea5t. Tri\u1ec7u ch\u1ee9ng thi\u1ebfu N bi\u1ec3u hi\u1ec7n \u1edf c\u00e1c l\u00e1 gi\u00e0 tr\u01b0\u1edbc<\/p>\n<p>\u2013 Th\u1eeba N s\u1ebd l\u00e0m c\u00e2y sinh tr\u01b0\u1edfng qu\u00e1 m\u1ea1nh, do th\u00e2n l\u00e1 t\u0103ng tr\u01b0\u1edfng nhanh m\u00e0 m\u00f4 c\u01a1 gi\u1edbi k\u00e9m h\u00ecnh th\u00e0nh n\u00ean c\u00e2y r\u1ea5t y\u1ebfu, d\u1ec5 l\u1ed1p \u0111\u1ed5, d\u1ec5 b\u1ecb s\u00e2u b\u1ec7nh t\u1ea5n c\u00f4ng. Ngo\u00e0i ra s\u1ef1 d\u01b0 th\u1eeba N trong s\u1ea3n ph\u1ea9m c\u00e2y tr\u1ed3ng (\u0111\u1eb7c bi\u1ec7t l\u00e0 rau xanh) c\u00f2n g\u00e2y t\u00e1c h\u1ea1i l\u1edbn t\u1edbi s\u1ee9c kh\u1ecfe con ng\u01b0\u1eddi. N\u1ebfu N d\u01b0 th\u1eeba \u1edf d\u1ea1ng NO3- th\u00ec khi v\u00e0o d\u1ea1 d\u00e0y, ch\u00fang s\u1ebd v\u00e0o ru\u1ed9t non v\u00e0 m\u1ea1ch m\u00e1u, s\u1ebd chuy\u1ec3n hemoglobin (c\u1ee7a m\u00e1u) th\u00e0nh d\u1ea1ng met-hemoglobin, l\u00e0m m\u1ea5t kh\u1ea3 n\u0103ng v\u1eadn chuy\u1ec3n oxy c\u1ee7a t\u1ebf b\u00e0o. C\u00f2n n\u1ebfu \u1edf d\u1ea1ng NO2- ch\u00fang s\u1ebd k\u1ebft h\u1ee3p v\u1edbi axit amin th\u1ee9 c\u1ea5p t\u1ea1o th\u00e0nh ch\u1ea5t Nitrosamine \u2013 l\u00e0 m\u1ed9t ch\u1ea5t g\u00e2y ung th\u01b0 r\u1ea5t m\u1ea1nh.<\/p>\n<h5><em>2. Photpho (P):<\/em><\/h5>\n<p>Photpho c\u1ea7n cho t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i c\u00e2y tr\u1ed3ng nh\u01b0ng r\u00f5 r\u1ec7t nh\u1ea5t l\u00e0 v\u1edbi c\u00e2y h\u1ecd \u0111\u1eadu v\u00ec ngo\u00e0i kh\u1ea3 n\u0103ng tham gia tr\u1ef1c ti\u1ebfp v\u00e0o c\u00e1c qu\u00e1 tr\u00ecnh s\u1ed1ng c\u1ee7a c\u00e2y, ch\u00fang c\u00f2n th\u00fac \u0111\u1ea9y kh\u1ea3 n\u0103ng c\u1ed1 \u0111\u1ecbnh \u0111\u1ea1m c\u1ee7a vi sinh v\u1eadt c\u1ed9ng sinh.<\/p>\n<ul>\n<li><em><strong>Vai tr\u00f2 sinh l\u00fd c\u1ee7a phospho<\/strong><\/em>:<\/li>\n<\/ul>\n<p>\u2013 L\u00e0 th\u00e0nh ph\u1ea7n c\u1ee7a ch\u1ea5t nguy\u00ean sinh v\u00e0 nh\u00e2n t\u1ebf b\u00e0o, c\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn qu\u00e1 tr\u00ecnh ph\u00e2n chia t\u1ebf b\u00e0o, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 sinh tr\u01b0\u1edfng v\u00e0 l\u1edbn l\u00ean c\u1ee7a c\u00e2y tr\u1ed3ng. C\u00e1c b\u1ed9 ph\u1eadn non, c\u00f3 m\u00f4 ph\u00e2n sinh ho\u1ea1t \u0111\u1ed9ng m\u1ea1nh lu\u00f4n c\u00f3 nhu c\u1ea7u P cao.<\/p>\n<p>\u2013 L\u00e0 th\u00e0nh ph\u00e2n c\u1ee7a ch\u1ea5t nguy\u00ean sinh n\u00ean \u1ea3nh h\u01b0\u1edfng l\u1ebfn \u0111\u1ebfn t\u00ednh th\u1ea5m c\u1ee7a t\u1ebf b\u00e0o, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 dinh d\u01b0\u1ee1ng c\u0169ng nh\u01b0 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu c\u1ee7a c\u00e2y. P l\u00e0m t\u0103ng t\u00ednh ch\u1ecbu l\u1ea1nh cho c\u00e2y, th\u00fac \u0111\u1ea9y s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a b\u1ed9 r\u1ec5 v\u00e0 c\u00e1c m\u00f4 ph\u00e2n sinh.<\/p>\n<p>\u2013 Tham gia x\u00e2y d\u1ef1ng n\u00ean ADP, ATP l\u00e0 nh\u1eefng h\u1ee3p ch\u1ea5t gi\u00e0u n\u0103ng l\u01b0\u1ee3ng sinh h\u1ecdc c\u1ee7a t\u1ebf b\u00e0o, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c qu\u00e1 tr\u00ecnh sinh h\u1ecdc c\u1ee7a c\u00e2y tr\u1ed3ng nh\u01b0: h\u00f4 h\u1ea5p, quang h\u1ee3p, h\u00fat n\u01b0\u1edbc v\u00e0 mu\u1ed1i kho\u00e1ng\u2026<\/p>\n<ul>\n<li><em><strong>C\u00e1c d\u1ea1ng phospho c\u00e2y s\u1eed d\u1ee5ng:<\/strong><\/em><\/li>\n<\/ul>\n<p>\u2013 C\u00e2y h\u00fat phospho d\u01b0\u1edbi d\u1ea1ng mu\u1ed1i c\u1ee7a acid octophosphoric v\u00e0 pyrophosphoric c\u0169ng nh\u01b0 c\u00e1c h\u1ee3p ch\u1ea5t h\u1eefu c\u01a1 c\u00f3 ch\u1ee9a phospho.<\/p>\n<p>\u2013 Trong th\u1eddi k\u1ef3 sinh tr\u01b0\u1edfng, P ph\u00e2n b\u1ed1 t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u1ed3ng d\u1ec1u \u1edf c\u00e1c b\u1ed9 ph\u1eadn c\u1ee7a c\u00e2y. Khi chuy\u1ec3n sang th\u1eddi kycf ph\u00e1t d\u1ee5c, P \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed1 l\u1ea1i v\u00e0 t\u1eadp trung ch\u1ee7 y\u1ebfu \u1edf c\u00e1c b\u1ed9 ph\u1eadn sinh th\u1ef1c.<\/p>\n<ul>\n<li><em><strong>Bi\u1ec3u hi\u1ec7n c\u1ee7a c\u00e2y tr\u1ed3ng \u0111\u1ed1i v\u1edbi P<\/strong><\/em>:<\/li>\n<\/ul>\n<p>\u2013 Khi thi\u1ebfu P, l\u00e1 c\u00e2y ban \u0111\u1ea7u c\u00f3 m\u00e0u xanh \u0111\u1eadm, sau chuy\u1ec3n m\u00e0u v\u00e0ng, hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y b\u1eaft \u0111\u1ea7u t\u1eeb c\u00e1c l\u00e1 ph\u00eda d\u01b0\u1edbi tr\u01b0\u1edbc, v\u00e0 t\u1eeb m\u00e9p l\u00e1 v\u00e0o trong. C\u00e2y l\u00faa thi\u1ebfu P l\u00e0m l\u00e1 nh\u1ecf, h\u1eb9p, \u0111\u1ebb nh\u00e1nh \u00edt, tr\u1ed7 b\u00f4ng ch\u1eadm, ch\u00edn k\u00e9o d\u00e0i, nhi\u1ec1u h\u1ea1t xanh, h\u1ea1t l\u00e9p. C\u00e2y ng\u00f4 thi\u1ebfu P sinh tr\u01b0\u1edfng ch\u1eadm, l\u00e1 c\u00f3 m\u00e0u l\u1ee5c r\u1ed3i chuy\u1ec3n m\u00e0u huy\u1ebft d\u1ee5.<br \/>\n\u2013 Th\u1eeba P kh\u00f4ng c\u00f3 bi\u1ec3u hi\u1ec7n g\u00e2y h\u1ea1i nh\u01b0 th\u1eeba N v\u00ec P thu\u1ed9c lo\u1ea1i nguy\u00ean t\u1ed1 linh \u0111\u1ed9ng, n\u00f3 c\u00f3 kh\u1ea3 n\u0103ng v\u1eadn chuy\u1ec3n t\u1eeb c\u01a1 quan gi\u00e0 sang c\u01a1 quan c\u00f2n non.<\/p>\n<h5><em>3. Kali (K):<\/em><\/h5>\n<p>Kali c\u1ea7n thi\u1ebft cho m\u1ecdi lo\u1ea1i c\u00e2y tr\u1ed3ng, nh\u01b0ng quan tr\u1ecdng nh\u1ea5t \u0111\u1ed1i v\u1edbi nh\u00f3m c\u00e2y ch\u1ee9a nhi\u1ec1u \u0111\u01b0\u1eddng hay tinh b\u1ed9t nh\u01b0 l\u00faa, ng\u00f4, m\u00eda, khoai t\u00e2y \u2026 B\u00f3n K s\u1ebd l\u00e0m t\u0103ng hi\u1ec7u qu\u1ea3 s\u1eed d\u1ee5ng P.<\/p>\n<ul>\n<li><em><strong>Vai tr\u00f2 sinh l\u00fd c\u1ee7a K<\/strong><\/em>:<\/li>\n<\/ul>\n<p>\u2013 C\u00f3 \u1ea3nh h\u01b0\u1edbng l\u1edbn \u0111\u1ebfn s\u1ef1 trao \u0111\u1ed5i gluxit. K th\u00fac \u0111\u1ea9y qu\u00e1 tr\u00ecnh trao \u0111\u1ed5i, v\u1eadn chuy\u1ec3n v\u00e0 chuy\u1ec3n h\u00f3a gluxit trong c\u00e2y, do \u0111\u00f3 gi\u00fap c\u00e2y c\u1ee9ng, kh\u00f5e, h\u1ea1n ch\u1ebf \u0111\u1ed5 ng\u00e3.<\/p>\n<p>\u2013 K \u1ea3nh h\u01b0\u1edfng s\u00e2u s\u1eafc \u0111\u1ebfn tr\u1ea1ng th\u00e1i nguy\u00ean sinh ch\u1ea5t, K l\u00e0m t\u0103ng \u0111\u1ed9 th\u1ee7y h\u00f3a c\u1ee7a nguy\u00ean sinh ch\u1ea5t t\u1ebf b\u00e0o, gi\u1ea3m \u0111\u1ed9 nh\u1edbt, t\u0103ng kh\u1ea3 n\u0103ng gi\u1eef n\u01b0\u1edbc cho t\u1ebf b\u00e0o. V\u00ec v\u1eady, K l\u00e0m t\u0103ng t\u00ednh ch\u1ecbu r\u00e9t v\u00e0 t\u00ednh ch\u1ed1ng b\u1ec7nh c\u1ee7a c\u00e2y.<\/p>\n<p>\u2013 Th\u00fac \u0111\u1ea3y s\u1ef1 t\u1ed5ng h\u1ee3p c\u00e1c vitamin.<\/p>\n<p>\u2013 Th\u00fac \u0111\u1ea3y qu\u00e1 tr\u00ecnh h\u00f4 h\u1ea5p v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c enzim: amilaza, saccaraza\u2026th\u00fac \u0111\u1ea3y qu\u00e1 tr\u00ecnh t\u1ed5ng h\u1ee3p \u0111\u01b0\u1eddng v\u00e0 qu\u00e1 tr\u00ecnh ch\u00edn c\u1ee7a c\u00e2y.<\/p>\n<p>\u2013 Kali c\u00f2n th\u00fac \u0111\u1ea3y qu\u00e1 tr\u00ecnh h\u1ea5p thu s\u1eaft c\u1ee7a c\u00e2y.<\/p>\n<ul>\n<li><em><strong>C\u00e1c d\u1ea1ng Kali c\u00e2y h\u1ea5p thu<\/strong><\/em>:<\/li>\n<\/ul>\n<p>\u2013 C\u00e2y h\u1ea5p th\u1ee5 Kali d\u01b0\u1edbi d\u1ea1ng c\u00e1c d\u1ea1ng mu\u1ed1i \u0111\u01a1n gi\u00e3n nh\u01b0 mu\u1ed1i nitrate, mu\u1ed1i clorua, mu\u1ed1i sulfat, mu\u1ed1i cacbonat.<\/p>\n<ul>\n<li><em><strong>Bi\u1ec3u hi\u1ec7n c\u00e2y tr\u1ed3ng \u0111\u1ed1i v\u1edbi Kali:<\/strong><\/em><\/li>\n<\/ul>\n<p>\u2013 Bi\u1ec3u hi\u1ec7n r\u1ea5t r\u00f5 khi thi\u1ebfu K l\u00e0 l\u00e1 h\u1eb9p, ng\u1eafn, xu\u1ea5t hi\u1ec7n c\u00e1c ch\u1ea5m \u0111\u1ecf, l\u00e1 d\u1ec5 h\u00e9o r\u0169 v\u00e0 kh\u00f4. Khi thi\u1ebfu Kali n\u1eb7ng, l\u00e1 b\u1ecb ch\u00e1y t\u1eeb ch\u00f3p l\u00e1 v\u00e0 m\u00e9p l\u00e0 v\u00e0o. Tri\u1ec7u ch\u1ee9ng xu\u1ea5t hi\u1ec7n tr\u00ean c\u00e1c l\u00e1 gi\u00e0 tr\u01b0\u1edbc.<\/p>\n<p>\u2013 C\u00e2y l\u00faa thi\u1ebfu K sinh tr\u01b0\u1edfng k\u00e9m, tr\u1ed7 s\u1edbm, ch\u00edn s\u1edbm, nhi\u1ec1u h\u1ea1t l\u00e9p l\u1eedng, m\u00e9p l\u00e1 v\u1ec1 ph\u00eda \u0111\u1ec9nh bi\u1ebfn v\u00e0ng. Ng\u00f4 thi\u1ebfu K l\u00e0m \u0111\u1ed1t ng\u1eafn, m\u00e9p l\u00e1 nh\u1ea1t d\u1ea7n sau chuy\u1ec3n m\u00e0u huy\u1ebft d\u1ee5, l\u00e1 c\u00f3 g\u1ee3n s\u00f3ng. \u0110i\u1ec1u \u0111\u1eb7c bi\u1ec7t l\u00e0 K c\u00f3 vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c t\u1ea1o l\u1eadp t\u00ednh ch\u1ed1ng ch\u1ecbu c\u1ee7a c\u00e2y tr\u1ed3ng v\u1edbi \u0111i\u1ec1u ki\u1ec7n b\u1ea5t thu\u1eadn (h\u1ea1n, r\u00e9t) c\u0169ng nh\u01b0 t\u00ednh kh\u00e1ng s\u00e2u b\u1ec7nh, v\u00ec v\u1eady n\u1ebfu thi\u1ebfu K s\u1ebd l\u00e0m nh\u1eefng ch\u1ee9c n\u0103ng n\u00e0y suy gi\u1ea3m \u0111i.<\/p>\n<ul>\n<li>C\u00e1c lo\u1ea1i c\u00e2y l\u1ea5y c\u1ee7 r\u1ea5t c\u1ea7n \u0111\u1ebfn nguy\u00ean t\u1ed1 Kali.<\/li>\n<\/ul>\n<h5><em>4. L\u01b0u hu\u1ef3nh (S):<\/em><\/h5>\n<p>\u2013 L\u01b0u hu\u1ef3nh tham gia trong th\u00e0nh ph\u1ea7n protein, axit amin (Xistein, Xistin, Metionin), vitamin, c\u00f3 vai tr\u00f2 quan tr\u1ecdng trong qu\u00e1 tr\u00ecnh trao \u0111\u1ed5i lipit v\u00e0 s\u1ef1 h\u00f4 h\u1ea5p c\u1ee7a c\u00e2y.<\/p>\n<p>\u2013 C\u00e2y h\u00fat l\u01b0u hu\u1ef3nh ch\u1ee7 y\u1ebfu d\u01b0\u1edbi d\u1ea1ng \u00a0SO4\u00ad2-\u00a0, c\u00e1c d\u1ea1ng SO2\u00a0hay H2\u00adS kh\u00f4ng nh\u1eefng c\u00e2y kh\u00f4ng h\u1ea5p thu \u0111\u01b0\u1ee3c m\u00e0 c\u00f2n g\u00e2y \u0111\u1ed9c cho c\u00e2y.<br \/>\n\u2013 Bi\u1ec3u hi\u1ec7n \u0111\u1eb7c Tr.\u01b0ng khi c\u00e2y thi\u1ebfu S c\u0169ng c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng v\u00e0ng l\u00e1 nh\u01b0 khi thi\u1ebfu N, tuy nhi\u00ean kh\u00e1c v\u1edbi thi\u1ebfu N l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng v\u00e0ng l\u00e1 xu\u1ea5t hi\u1ec7n \u1edf c\u00e1c l\u00e1 non tr\u01b0\u1edbc c\u00e1c l\u00e1 tr\u01b0\u1edfng th\u00e0nh v\u00e0 l\u00e1 gi\u00e0. Khi c\u00e2y thi\u1ebfu S, g\u00e2n l\u00e1 chuy\u1ec3n v\u00e0ng trong khi ph\u1ea7n th\u1ecbt l\u00e1 v\u1eabn c\u00f2n xanh, sau \u0111\u00f3 m\u1edbi chuy\u1ec3n v\u00e0ng. K\u00e8m theo nh\u1eefng t\u1ed5n th\u01b0\u01a1ng tr\u01b0\u1edbc h\u1ebft \u1edf ph\u1ea7n ng\u1ecdn v\u00e0 l\u00e1 non, c\u1ed9ng v\u1edbi s\u1ef1 xu\u1ea5t hi\u1ec7n c\u00e1c v\u1ebft ch\u1ea5m \u0111\u1ecf tr\u00ean l\u00e1 do m\u00f4 t\u1ebf b\u00e0o ch\u1ebft.<\/p>\n<h5><em>5. Canxi (Ca):<\/em><\/h5>\n<p>\u2013 Canxi c\u00f3 vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c h\u00ecnh th\u00e0nh t\u1ebf b\u00e0o, h\u00ecnh th\u00e0nh c\u00e1c m\u00f4 c\u01a1 quan c\u1ee7a c\u00e2y. Ch\u00fang c\u00f3 \u00fd ngh\u0129a quan tr\u1ecdng trong vi\u1ec7c trung h\u00f2a \u0111\u1ed9 chua c\u1ee7a \u0111\u1ea5t c\u0169ng nh\u01b0 vi\u1ec7c kh\u1eed \u0111\u1ed9c do s\u1ef1 c\u00f3 m\u1eb7t c\u1ee7a c\u00e1c cation (Na+, Al3+ \u2026) trong nguy\u00ean sinh ch\u1ea5t c\u1ee7a t\u1ebf b\u00e0o. C\u00f9ng v\u1edbi P, Ca l\u00e0 nguy\u00ean t\u1ed1 h\u00e0ng \u0111\u1ea7u \u0111\u1ec3 t\u0103ng n\u0103ng su\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng c\u00e2y h\u1ecd \u0111\u1eadu.<\/p>\n<p>\u2013 C\u00e2y h\u00fat canxi \u1edf d\u1ea1ng ion Ca2+\u00a0.Ca c\u00f3 nhi\u1ec1u \u1edf c\u00e1c b\u1ed9 ph\u1eadn c\u1ee7a c\u00e2y \u1edf tr\u00ean m\u1eb7t \u0111\u1ea5t v\u00e0 t\u1eadp trung ch\u1ee7 y\u1ebfu \u1edf c\u00e1c b\u1ed9 ph\u1eadn gi\u00e0. \u1ede c\u1ea5p \u0111\u1ed9 t\u1ebf b\u00e0o, Canxi t\u1eadp trung nhi\u1ec1u \u1edf v\u1ecf t\u1ebf b\u00e0o d\u01b0\u1edbi d\u1ea1ng pectat canxi.<\/p>\n<p>\u2013 Khi thi\u1ebfu Ca th\u00ec \u0111\u1ec9nh sinh tr\u01b0\u1edfng v\u00e0 ch\u00f3p r\u1ec5 b\u1ecb \u1ea3nh h\u01b0\u1edfng nghi\u00eam tr\u1ecdng do c\u00e1c m\u00f4 ph\u00e2n sinh ng\u1eebng ph\u00e2n chia, sinh tr\u01b0\u1edfng b\u1ecb \u1ee9c ch\u1ebf. Tri\u1ec7u ch\u1ee9ng \u0111\u1eb7c tr\u01b0ng c\u1ee7a c\u00e2y thi\u1ebfu Ca l\u00e0 c\u00e1c l\u00e1 m\u1edbi ra b\u1ecb d\u1ecb d\u1ea1ng, ch\u00f3p l\u00e1 u\u1ed1n c\u00e2u, r\u1ec5 k\u00e9m ph\u00e1t tri\u1ec3n, ng\u1eafn, h\u00f3a nh\u1ea7y v\u00e0 ch\u1ebft. Ca l\u00e0 ch\u1ea5t kh\u00f4ng di \u0111\u1ed9ng trong c\u00e2y n\u00ean bi\u1ec3u hi\u1ec7n thi\u1ebfu Ca th\u01b0\u1eddng th\u1ec3 hi\u1ec7n \u1edf c\u00e1c l\u00e1 non tr\u01b0\u1edbc.<\/p>\n<p>\u2013 C\u00e2y h\u1ecd \u0111\u1eadu v\u00e0 c\u00e2y l\u1ea5y \u0111\u01b0\u1eddng r\u1ea5t c\u1ea7n \u0111\u1ebfn canxi.<\/p>\n<h5><em>6. Magi\u00ea (Mg):<\/em><\/h5>\n<p>\u2013 Magi\u00ea l\u00e0 th\u00e0nh ph\u1ea7n quan tr\u1ecdng c\u1ee7a ph\u00e2n t\u1eed di\u1ec7p l\u1ee5c n\u00ean n\u00f3 quy\u1ebft \u0111\u1ecbnh ho\u1ea1t \u0111\u1ed9ng quang h\u1ee3p c\u1ee7a c\u00e2y. \u0110\u00e2y c\u0169ng l\u00e0 ch\u1ea5t ho\u1ea1t h\u00f3a c\u1ee7a nhi\u1ec1u enzym r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi qu\u00e1 tr\u00ecnh h\u00f4 h\u1ea5p v\u00e0 trao \u0111\u1ed5i ch\u1ea5t c\u1ee7a c\u00e2y. Mg r\u1ea5t c\u1ea7n \u0111\u1ed1i v\u1edbi c\u00e1c c\u00e2y ng\u1eafn ng\u00e0y nh\u01b0 l\u00faa, ng\u00f4, \u0111\u1eadu, khoai t\u00e2y\u2026 Mg s\u1ebd l\u00e0m t\u0103ng h\u00e0m l\u01b0\u1ee3ng tinh b\u1ed9t trong s\u1ea3n ph\u1ea9m.<\/p>\n<p>\u2013 C\u00e2y magie d\u01b0\u1edbi d\u1ea1ng ion Mg2+.Magie trong c\u00e2y t\u1eadp trung nhi\u1ec1u \u1edf c\u00e1c b\u1ed9 ph\u1eadn non.<\/p>\n<p>\u2013 Thi\u1ebfu Mg l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh ra hoa, c\u00e2y th\u01b0\u1eddng b\u1ecb v\u00e0ng l\u00e1 do thi\u1ebfu di\u1ec7p l\u1ee5c. Tri\u1ec7u ch\u1ee9ng \u0111i\u1ec3n h\u00ecnh l\u00e0 c\u00e1c g\u00e2n l\u00e1 c\u00f2n xanh trong khi ph\u1ea7n th\u1ecbt l\u00e1 \u0111\u00e3 bi\u1ebfn v\u00e0ng. Xu\u1ea5t hi\u1ec7n c\u00e1c m\u00f4 ho\u1ea1i t\u1eed th\u01b0\u1eddng t\u1eeb c\u00e1c l\u00e1 ph\u00eda d\u01b0\u1edbi, l\u00e1 tr\u01b0\u1edfng th\u00e0nh l\u00ean l\u00e1 non, v\u00ec Mg l\u00e0 nguy\u00ean t\u1ed1 linh \u0111\u1ed9ng, c\u00e2y c\u00f3 th\u1ec3 d\u00f9ng l\u1ea1i t\u1eeb c\u00e1c l\u00e1 gi\u00e0.<\/p>\n<h5><em>7<\/em>.\u00a0<em>Silic (Si):<\/em><\/h5>\n<p>\u2013 Silic gi\u00fap t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 c\u1ee9ng cho th\u00e2n c\u00e2y, ng\u0103n ng\u1eeba s\u00e2u b\u1ec7nh v\u00e0 c\u00f4n tr\u00f9ng g\u00e2y h\u1ea1i.<\/p>\n<p>\u2013 Gi\u00fap b\u1ea3o v\u1ec7 \u0111\u1ea5t do s\u1eed d\u1ee5ng c\u00e1c h\u00f3a ch\u1ea5t. T\u0103ng c\u01b0\u1eddng \u0111\u1ed9 m\u00e0u m\u1ee1 cho \u0111\u1ea5t v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng gi\u1eef n\u01b0\u1edbc t\u1ed1t. Gi\u00fap c\u00e2n b\u1eb1ng v\u00e0 n\u00e2ng cao l\u01b0\u1ee3ng kho\u00e1ng ch\u1ea5t trong \u0111\u1ea5t \u0111\u1ec3 c\u00e2y tr\u1ed3ng h\u1ea5p th\u1ee5.<\/p>\n<p>\u2013 Silic \u0111\u1eb7c bi\u1ec7t c\u1ea7n thi\u1ebft \u0111\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i c\u00e2y l\u01b0\u01a1ng th\u1ef1c, m\u00eda v\u00e0 c\u00e2y l\u1ea5y s\u1ee3i.<\/p>\n<h5><em>8. S\u1eaft (Fe):<\/em><\/h5>\n<p>\u2013 Vai tr\u00f2 quan tr\u1ecdng nh\u1ea5t c\u1ee7a s\u1eaft l\u00e0 ho\u1ea1t h\u00f3a c\u00e1c enzym c\u1ee7a qu\u00e1 tr\u00ecnh quang h\u1ee3p v\u00e0 h\u00f4 h\u1ea5p. N\u00f3 kh\u00f4ng tham gia v\u00e0o th\u00e0nh ph\u1ea7n di\u1ec7p l\u1ee5c nh\u01b0ng c\u00f3 \u1ea3nh h\u01b0\u1edfng quy\u1ebft \u0111\u1ecbnh t\u1edbi s\u1ef1 t\u1ed5ng h\u1ee3p di\u1ec7p l\u1ee5c trong c\u00e2y. H\u00e0m l\u01b0\u1ee3ng s\u1eaft trong l\u00e1 c\u00e2y c\u00f3 quan h\u1ec7 m\u1eadt thi\u1ebft \u0111\u1ebfn h\u00e0m l\u01b0\u1ee3ng di\u1ec7p l\u1ee5c trong ch\u00fang.<br \/>\n\u2013 S\u1ef1 thi\u1ebfu h\u1ee5t Fe th\u01b0\u1eddng x\u1ea3y ra tr\u00ean n\u1ec1n \u0111\u1ea5t c\u00f3 \u0111\u00e1 v\u00f4i, \u0111\u1ea5t b\u00f3n nhi\u1ec1u l\u00e2n, v\u00f4i v\u00e0 c\u00f3 pH cao. L\u00e1 c\u00e2y thi\u1ebfu s\u1eaft s\u1ebd chuy\u1ec3n t\u1eeb m\u00e0u xanh sang v\u00e0ng hay tr\u1eafng \u1edf ph\u1ea7n th\u1ecbt l\u00e1, trong khi g\u00e2n l\u00e1 v\u1eabn c\u00f2n xanh. Tri\u1ec7u ch\u1ee9ng thi\u1ebfu s\u1eaft xu\u1ea5t hi\u1ec7n tr\u01b0\u1edbc h\u1ebft \u1edf c\u00e1c l\u00e1 non, sau \u0111\u1ebfn l\u00e1 gi\u00e0, v\u00ec Fe kh\u00f4ng di \u0111\u1ed9ng t\u1eeb l\u00e1 gi\u00e0 v\u1ec1 l\u00e1 non.<\/p>\n<h5><em>9. Mangan (Mn):<\/em><\/h5>\n<p>\u2013 Mn l\u00e0 nguy\u00ean t\u1ed1 ho\u1ea1t h\u00f3a r\u1ea5t nhi\u1ec1u enzym c\u1ee7a c\u00e1c qu\u00e1 tr\u00ecnh quang h\u1ee3p, h\u00f4 h\u1ea5p v\u00e0 c\u1ed1 \u0111\u1ecbnh nit\u01a1 ph\u00e2n t\u1eed.<br \/>\n\u2013 Tri\u1ec7u ch\u1ee9ng \u0111i\u1ec3n h\u00ecnh khi c\u00e2y thi\u1ebfu Mn l\u00e0 ph\u1ea7n g\u00e2n l\u00e1 v\u00e0 m\u1ea1ch d\u1eabn bi\u1ebfn v\u00e0ng, nh\u00ecn to\u00e0n b\u1ed9 l\u00e1 c\u00f3 m\u00e0u xanh s\u00e1ng, v\u1ec1 sau xu\u1ea5t hi\u1ec7n c\u00e1c \u0111\u1ed1m v\u00e0ng \u1edf ph\u1ea7n th\u1ecbt l\u00e1 v\u00e0 ph\u00e1t tri\u1ec3n th\u00e0nh c\u00e1c v\u1ebft ho\u1ea1i t\u1eed tr\u00ean l\u00e1. N\u1ebfu thi\u1ebfu nghi\u00eam tr\u1ecdng s\u1ebd g\u00e2y kh\u00f4 v\u00e0 ch\u1ebft l\u00e1. Tri\u1ec7u ch\u1ee9ng thi\u1ebfu Mn c\u00f3 th\u1ec3 bi\u1ec3u hi\u1ec7n \u1edf l\u00e1 gi\u00e0 hay l\u00e1 non t\u00f9y theo t\u1eebng lo\u1ea1i c\u00e2y.<\/p>\n<h5><em>10. \u0110\u1ed3ng (Cu):<\/em><\/h5>\n<p>\u2013 \u0110\u1ed3ng l\u00e0 nguy\u00ean t\u1ed1 ho\u1ea1t h\u00f3a nhi\u1ec1u enzym c\u1ee7a qu\u00e1 tr\u00ecnh t\u1ed5ng h\u1ee3p protein, axit nucleic v\u00e0 dinh d\u01b0\u1ee1ng nit\u01a1 c\u1ee7a c\u00e2y.<br \/>\n\u2013 Hi\u1ec7n t\u01b0\u1ee3ng thi\u1ebfu \u0111\u1ed3ng th\u01b0\u1eddng x\u1ea3y ra tr\u00ean nh\u1eefng v\u00f9ng \u0111\u1ea5t \u0111\u1ea7m l\u00e2y, ru\u1ed9ng l\u1ea7y th\u1ee5t. C\u00e2y tr\u1ed3ng thi\u1ebfu \u0111\u1ed3ng th\u01b0\u1eddng hay c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng ch\u1ea3y g\u00f4m (r\u1ea5t hay x\u1ea3y ra \u1edf c\u00e2y \u0103n qu\u1ea3), k\u00e8m theo c\u00e1c v\u1ebft ho\u1ea1i t\u1eed tr\u00ean l\u00e1 hay qu\u1ea3. V\u1edbi c\u00e2y h\u1ecd h\u00f2a th\u1ea3o, n\u1ebfu thi\u1ebfu \u0111\u1ed3ng s\u1ebd l\u00e0m m\u1ea5t m\u00e0u xanh \u1edf ph\u1ea7n ng\u1ecdn l\u00e1.<\/p>\n<h5><em>11. Bo (B):<\/em><\/h5>\n<p>\u2013 B l\u00e0 m\u1ed9t trong nh\u1eefng nguy\u00ean t\u1ed1 vi l\u01b0\u1ee3ng c\u00f3 hi\u1ec7u qu\u1ea3 nh\u1ea5t v\u1edbi c\u00e2y tr\u1ed3ng. B t\u00e1c \u0111\u1ed9ng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn qu\u00e1 tr\u00ecnh ph\u00e2n h\u00f3a t\u1ebf b\u00e0o, trao \u0111\u1ed5i hocmon, trao \u0111\u1ed5i N, n\u01b0\u1edbc v\u00e0 ch\u1ea5t kho\u00e1ng kh\u00e1c, \u1ea3nh h\u01b0\u1edfng r\u00f5 r\u1ec7t nh\u1ea5t c\u1ee7a B l\u00e0 t\u1edbi m\u00f4 ph\u00e2n sinh \u1edf \u0111\u1ec9nh sinh tr\u01b0\u1edfng v\u00e0 qu\u00e1 tr\u00ecnh ph\u00e2n h\u00f3a hoa, th\u1ee5 ph\u1ea5n, th\u1ee5 tinh, h\u00ecnh th\u00e0nh qu\u1ea3.<br \/>\n\u2013 Khi thi\u1ebfu B th\u00ec ch\u1ed3i ng\u1ecdn, \u0111\u1ec9nh sinh tr\u01b0\u1edfng b\u1ecb ch\u1ebft, c\u00e1c ch\u1ed3i b\u00ean c\u0169ng thui d\u1ea7n, hoa kh\u00f4ng h\u00ecnh th\u00e0nh, t\u1ef7 l\u1ec7 \u0111\u1eadu qu\u1ea3 k\u00e9m, qu\u1ea3 d\u1ec5 r\u1ee5ng, r\u1ec5 sinh tr\u01b0\u1edfng k\u00e9m, l\u00e1 b\u1ecb d\u00e0y l\u00ean. Tri\u1ec7u ch\u1ee9ng thi\u1ebfu B th\u01b0\u1eddng bi\u1ec3u hi\u1ec7n hi\u1ec7n \u1edf c\u00e1c b\u1ed9 ph\u1eadn non tr\u01b0\u1edbc.<\/p>\n<h5><em>12. Molypden (Mo):<\/em><\/h5>\n<p>\u2013 Mo c\u00f3 vai tr\u00f2 r\u1ea5t quan tr\u1ecdng trong vi\u1ec7c trao \u0111\u1ed5i nit\u01a1, t\u1ed5ng h\u1ee3p Vitamin C v\u00e0 h\u00ecnh th\u00e0nh l\u1ee5c l\u1ea1p c\u1ee7a c\u00e2y.<\/p>\n<p>\u2013 Thi\u1ebfu Mo s\u1ebd \u1ee9c ch\u1ebf dinh d\u01b0\u1ee1ng \u0111\u1ea1m c\u1ee7a c\u00e2y tr\u1ed3ng n\u00f3i chung<\/p>\n<p>\u2013 Mo \u0111\u1eb7c bi\u1ec7t c\u1ee7a c\u00e1c c\u00e2y h\u1ecd \u0111\u1eadu v\u00ec n\u00f3 x\u00fac t\u00e1c cho qu\u00e1 tr\u00ecnh c\u1ed1 \u0111\u1ecbnh N c\u1ee7a vi khu\u1ea9n n\u1ed1t s\u1ea7n.<\/p>\n<h5><em>13. K\u1ebdm (Zn):<\/em><\/h5>\n<p>\u2013 Zn tham gia ho\u1ea1t h\u00f3a kho\u1ea3ng 70 enzym c\u1ee7a nhi\u1ec1u ho\u1ea1t \u0111\u1ed9ng sinh l\u00fd, sinh h\u00f3a c\u1ee7a c\u00e2y.<\/p>\n<p>\u2013 C\u00e2y thi\u1ebfu k\u1ebdm l\u00e1 s\u1ebd cu\u1ed9n tr\u00f2n, g\u00e2n l\u00e1 xu\u1ea5t hi\u1ec7n nh\u1eefng \u0111\u1ed1m v\u1eb1n, l\u00e1 tr\u1edf n\u00ean d\u00e0y, cu\u1ed1ng l\u00e1 tr\u1edf n\u00ean ng\u1eafn,\u00a0nh\u1ecf v\u00e0 xo\u0103n, \u0111\u1ed1t ng\u1eafn v\u00e0 bi\u1ebfn d\u1ea1ng.<\/p>\n<p>\u2013 Thi\u1ebfu Zn s\u1ebd g\u00e2y r\u1ed1i lo\u1ea1n trao \u0111\u1ed5i auxin n\u00ean \u1ee9c ch\u1ebf sinh tr\u01b0\u1edfng.<\/p>\n<p>\u2013 B\u00f3n ph\u00e2n ch\u1ee9a k\u1ebdm l\u00e0m t\u0103ng kh\u1ea3 n\u0103ng h\u00fat K, Si, Mn, v\u00e0 Mo v\u00e0 t\u0103ng kh\u1ea3 n\u0103ng ch\u1ed1ng b\u1ec7nh do n\u1ea5m\u00a0<em>Phytopthora<\/em>\u00a0g\u00e2y h\u1ea1i cho c\u00e2y tr\u1ed3ng.<\/p>\n<p>\u2013 Thi\u1ebfu k\u1ebdm th\u01b0\u1eddng x\u1eaby ra tr\u00ean c\u00e1c lo\u1ea1i \u0111\u1ea5t c\u00f3 pH ki\u1ec1m, b\u00f3n nhi\u1ec1u l\u00e2n v\u00e0 v\u00f4i<\/p>\n<p><em><strong>St.\u00a0http:\/\/baovethucvat.890m.com<\/strong><\/em><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Khi ph\u00e2n t\u00edch th\u00e0nh ph\u1ea7n c\u1ee7a th\u1ef1c v\u1eadt, ng\u01b0\u1eddi ta \u0111\u00e3 t\u00ecm ra s\u1ef1 c\u00f3 m\u1eb7t c\u1ee7a kho\u1ea3ng 60 nguy\u00ean t\u1ed1 h\u00f3a h\u1ecdc. Tuy nhi\u00ean, ch\u1ec9 m\u1ed9t s\u1ed1 nguy\u00ean t\u1ed1 l\u00e0 t\u1ed1i c\u1ea7n thi\u1ebft cho c\u00e2y tr\u1ed3ng. C\u00e1c nguy\u00ean t\u1ed1 n\u00e0y \u0111\u01b0\u1ee3c chia th\u00e0nh 3 nh\u00f3m d\u1ef1a v\u00e0o nhu c\u1ea7u c\u1ee7a c\u00e2y tr\u1ed3ng nh\u01b0 sau: [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":7158,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[142],"tags":[],"_links":{"self":[{"href":"https:\/\/demo8.thuythu.com\/alphaglobal\/wp-json\/wp\/v2\/posts\/7156"}],"collection":[{"href":"https:\/\/demo8.thuythu.com\/alphaglobal\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/demo8.thuythu.com\/alphaglobal\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/demo8.thuythu.com\/alphaglobal\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/demo8.thuythu.com\/alphaglobal\/wp-json\/wp\/v2\/comments?post=7156"}],"version-history":[{"count":1,"href":"https:\/\/demo8.thuythu.com\/alphaglobal\/wp-json\/wp\/v2\/posts\/7156\/revisions"}],"predecessor-version":[{"id":7157,"href":"https:\/\/demo8.thuythu.com\/alphaglobal\/wp-json\/wp\/v2\/posts\/7156\/revisions\/7157"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/demo8.thuythu.com\/alphaglobal\/wp-json\/wp\/v2\/media\/7158"}],"wp:attachment":[{"href":"https:\/\/demo8.thuythu.com\/alphaglobal\/wp-json\/wp\/v2\/media?parent=7156"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/demo8.thuythu.com\/alphaglobal\/wp-json\/wp\/v2\/categories?post=7156"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/demo8.thuythu.com\/alphaglobal\/wp-json\/wp\/v2\/tags?post=7156"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}