H\u1ea1t c\u00e2y tr\u1ed3ng \u0111\u01b0\u1ee3c r\u1ea3i xu\u1ed1ng \u0111\u1ea5t, c\u00f3 h\u1ea1t \u0111\u1ee9ng th\u1eb3ng, c\u00f3 h\u1ea1t \u0111\u1ed5 nghi\u00eang, c\u00f3 h\u1ea1t n\u1eb1m s\u1ea5p, c\u00f3 h\u1ea1t l\u1ea1i n\u1eb1m ng\u1eeda, l\u1ea1i c\u00f3 h\u1ea1t b\u1ecb ch\u1ed5ng ng\u01b0\u1ee3c, ch\u00fang \u1edf m\u1ecdi t\u01b0 th\u1ebf kh\u00e1c nhau, th\u1ebf nh\u01b0ng t\u1ea1i sao r\u1ec5 c\u1ee7a th\u1ef1c v\u1eadt bao gi\u1edd c\u0169ng \u0111\u00e2m xu\u1ed1ng, c\u00f2n th\u00e2n th\u1ef1c v\u1eadt l\u1ea1i h\u01b0\u1edbng l\u00ean tr\u00ean?<\/p>\n\n\n\n
\u0110i\u1ec1u n\u00e0y v\u1ed1n l\u00e0 do t\u00e1c d\u1ee5ng s\u1ee9c h\u00fat c\u1ee7a t\u00e2m Tr\u00e1i \u0110\u1ea5t. Th\u1ef1c v\u1eadt sau khi b\u1ecb k\u00edch th\u00edch theo m\u1ed9t h\u01b0\u1edbng c\u1ee7a m\u00f4i tr\u01b0\u1eddng b\u00ean ngo\u00e0i, s\u1ebd s\u1ea3n sinh ra s\u1ef1 ph\u1ea3n \u1ee9ng theo m\u1ed9t h\u01b0\u1edbng, hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y g\u1ecdi l\u00e0 \u201ct\u00ednh h\u01b0\u1edbng\u201d. V\u00ed d\u1ee5, l\u00e1 c\u00e2y b\u1ecb \u00e1nh s\u00e1ng M\u1eb7t Tr\u1eddi h\u01b0\u1edbng v\u00e0o s\u1ebd sinh tr\u01b0\u1edfng theo h\u01b0\u1edbng c\u1ee7a \u00e1nh s\u00e1ng M\u1eb7t Tr\u1eddi, khi\u1ebfn cho m\u1eb7t l\u00e1 c\u00e2y vu\u00f4ng g\u00f3c v\u1edbi \u00e1nh s\u00e1ng M\u1eb7t Tr\u1eddi. \u0110i\u1ec1u \u0111\u00f3 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u201ct\u00ednh h\u01b0\u1edbng \u00e1nh s\u00e1ng\u201d. R\u1ec5 v\u00e0 th\u00e2n c\u00e2y ch\u1ecbu s\u1ee9c h\u00fat c\u1ee7a t\u00e2m Tr\u00e1i \u0110\u1ea5t s\u1ebd sinh tr\u01b0\u1edfng theo h\u01b0\u1edbng xu\u1ed1ng \u0111\u1ea5t ho\u1eb7c theo h\u01b0\u1edbng ng\u01b0\u1ee3c l\u1ea1i, g\u1ecdi l\u00e0 \u201ct\u00ednh h\u01b0\u1edbng \u0111\u1ea5t\u201d. N\u1ebfu ta \u0111\u1eb7t n\u1eb1m ngang m\u1ed9t c\u00e2y v\u00e0 \u0111\u1ec3 y\u00ean b\u1ea5t \u0111\u1ed9ng th\u00ec sau m\u1ed9t s\u1ed1 ng\u00e0y, r\u1ec5 c\u00e2y s\u1ebd ph\u00e1t tri\u1ec3n cong xu\u1ed1ng (t\u00ednh h\u01b0\u1edbng \u0111\u1ea5t d\u01b0\u01a1ng), c\u00f2n th\u00e2n c\u00e2y s\u1ebd cong h\u01b0\u1edbng l\u00ean tr\u00ean (t\u00ednh h\u01b0\u1edbng \u0111\u1ea5t \u00e2m). N\u1ebfu c\u00f9ng \u1edf t\u01b0 th\u1ebf \u0111\u00f3, nh\u01b0ng th\u01b0\u1eddng xuy\u00ean xoay quanh tr\u1ee5c d\u1ecdc, khi\u1ebfn cho c\u00e1c b\u1ed9 ph\u1eadn xung quanh \u0111\u1ec1u ch\u1ecbu t\u00e1c d\u1ee5ng c\u1ee7a s\u1ee9c h\u00fat Tr\u00e1i \u0110\u1ea5t, lo\u1ea1i b\u1ecf s\u1ef1 k\u00edch th\u00edch theo m\u1ed9t h\u01b0\u1edbng c\u1ee7a s\u1ee9c h\u00fat th\u00ec b\u1ea1n s\u1ebd th\u1ea5y c\u1ea3 r\u1ec5 v\u00e0 th\u00e2n c\u00e2y \u0111\u1ec1u m\u1ecdc theo h\u01b0\u1edbng n\u1eb1m ngang ch\u1ee9 kh\u00f4ng cong.<\/p>\n\n\n\n
V\u1eady s\u1ee9c h\u00fat c\u1ee7a t\u00e2m Tr\u00e1i \u0110\u1ea5t t\u1ea1i sao l\u1ea1i c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 ph\u00e1t tri\u1ec3n tr\u00e1i ng\u01b0\u1ee3c c\u1ee7a r\u1ec5 v\u00e0 th\u00e2n c\u00e2y nh\u01b0 v\u1eady? C\u01a1 ch\u1ebf c\u1ee7a v\u1ea5n \u0111\u1ec1 n\u00e0y r\u1ea5t ph\u1ee9c t\u1ea1p. C\u00f3 m\u1ed9t c\u00e1ch gi\u1ea3i th\u00edch nh\u01b0 sau: t\u00ednh h\u01b0\u1edbng \u0111\u1ea5t c\u1ee7a r\u1ec5 v\u00e0 th\u00e2n c\u00e2y l\u00e0 k\u1ebft qu\u1ea3 do m\u1ed9t ph\u00eda sinh tr\u01b0\u1edfng t\u01b0\u01a1ng \u0111\u1ed1i nhanh, m\u1ed9t ph\u00eda l\u1ea1i sinh tr\u01b0\u1edfng t\u01b0\u01a1ng \u0111\u1ed1i ch\u1eadm, cong v\u1ec1 ph\u00eda sinh tr\u01b0\u1edfng t\u01b0\u01a1ng \u0111\u1ed1i ch\u1eadm, s\u1ef1 sinh tr\u01b0\u1edfng nhanh ch\u1eadm kh\u00e1c nhau c\u1ee7a hai ph\u00eda c\u00f3 li\u00ean quan \u0111\u1ebfn n\u1ed3ng \u0111\u1ed9 kh\u00e1c nhau c\u1ee7a ch\u1ea5t sinh tr\u01b0\u1edfng; m\u00e0 s\u1ef1 kh\u00e1c nhau v\u1ec1 n\u1ed3ng \u0111\u1ed9 c\u1ee7a ch\u1ea5t \u0111\u00f3 l\u1ea1i do t\u00e1c d\u1ee5ng m\u1ed9t chi\u1ec1u c\u1ee7a s\u1ee9c h\u00fat t\u00e2m Tr\u00e1i \u0110\u1ea5t g\u00e2y n\u00ean.<\/p>\n\n\n\n
Ch\u1ea5t sinh tr\u01b0\u1edfng l\u00e0 m\u1ed9t lo\u1ea1i hooc m\u00f4n th\u1ef1c v\u1eadt, n\u1ed3ng \u0111\u1ed9 th\u1ea5p s\u1ebd th\u00fac \u0111\u1ea9y s\u1ef1 sinh tr\u01b0\u1edfng, n\u1ed3ng \u0111\u1ed9 cao s\u1ebd \u1ee9c ch\u1ebf s\u1ef1 sinh tr\u01b0\u1edfng. S\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a r\u1ec5 v\u00e0 th\u00e2n c\u00f3 ph\u1ea3n \u1ee9ng kh\u00f4ng gi\u1ed1ng nhau \u0111\u1ed1i v\u1edbi n\u1ed3ng \u0111\u1ed9 ch\u1ea5t sinh tr\u01b0\u1edfng, n\u1ed3ng \u0111\u1ed9 ch\u1ea5t sinh tr\u01b0\u1edfng th\u1ea5p s\u1ebd th\u00fac \u0111\u1ea9y s\u1ef1 sinh tr\u01b0\u1edfng c\u1ee7a r\u1ec5, v\u00e0 \u1ee9c ch\u1ebf s\u1ef1 sinh tr\u01b0\u1edfng c\u1ee7a th\u00e2n, ng\u01b0\u1ee3c l\u1ea1i n\u1ed3ng \u0111\u1ed9 ch\u1ea5t sinh tr\u01b0\u1edfng cao s\u1ebd \u1ee9c ch\u1ebf r\u1ec5 sinh tr\u01b0\u1edfng v\u00e0 th\u00fac \u0111\u1ea9y th\u00e2n sinh tr\u01b0\u1edfng m\u1ea1nh.<\/p>\n\n\n\n
Khi c\u00e2y \u0111\u1eb7t n\u1eb1m ngang, do t\u00e1c \u0111\u1ed9ng c\u1ee7a s\u1ee9c h\u00fat Tr\u00e1i \u0110\u1ea5t, ch\u1ea5t sinh tr\u01b0\u1edfng s\u1ebd ng\u1ea5m xu\u1ed1ng ph\u00eda d\u01b0\u1edbi, n\u1ed3ng \u0111\u1ed9 ch\u1ea5t sinh tr\u01b0\u1edfng \u1edf ph\u00eda d\u01b0\u1edbi ph\u1ea7n th\u00e2n c\u00e2y s\u1ebd cao, sinh tr\u01b0\u1edfng nhanh h\u01a1n ph\u00eda tr\u00ean, khi\u1ebfn cho ph\u1ea7n \u0111\u1ea7u c\u1ee7a th\u00e2n c\u00e2y cong l\u00ean tr\u00ean, ph\u00eda d\u01b0\u1edbi c\u1ee7a r\u1ec5 n\u1ed3ng \u0111\u1ed9 ch\u1ea5t sinh tr\u01b0\u1edfng cao g\u00e2y t\u00e1c d\u1ee5ng \u1ee9c ch\u1ebf sinh tr\u01b0\u1edfng ch\u1eadm h\u01a1n ph\u00eda tr\u00ean, n\u00ean \u0111\u1ea7u r\u1ec5 s\u1ebd cong xu\u1ed1ng d\u01b0\u1edbi. \u0110\u00e2y ch\u1ec9 l\u00e0 m\u1ed9t s\u1ef1 gi\u1ea3i th\u00edch th\u00f4ng th\u01b0\u1eddng, c\u00f2n tr\u00ean th\u1ef1c t\u1ebf ph\u1ee9c t\u1ea1p h\u01a1n nhi\u1ec1u.<\/p>\n\n\n\n
T\u00ednh h\u01b0\u1edbng c\u1ee7a th\u1ef1c v\u1eadt (t\u00ednh h\u01b0\u1edbng \u0111\u1ea5t, t\u00ednh h\u01b0\u1edbng \u00e1nh s\u00e1ng, t\u00ednh h\u01b0\u1edbng n\u01b0\u1edbc\u2026) l\u00e0 m\u1ed9t trong nh\u1eefng hi\u1ec7n t\u01b0\u1ee3ng th\u00edch nghi trong qu\u00e1 tr\u00ecnh ti\u1ebfn h\u00f3a c\u1ee7a th\u1ef1c v\u1eadt. N\u00f3 \u0111em l\u1ea1i s\u1ef1 thu\u1eadn l\u1ee3i r\u1ea5t l\u1edbn cho s\u1ea3n xu\u1ea5t n\u00f4ng nghi\u1ec7p.<\/p>\n\n\n\n
Do th\u00e2n v\u00e0 r\u1ec5 c\u00f3 t\u00ednh h\u01b0\u1edbng \u0111\u1ea5t, n\u00ean khi gieo h\u1ea1t ta kh\u00f4ng c\u1ea7n quan t\u00e2m \u0111\u1ebfn v\u1ecb tr\u00ed c\u1ee7a h\u1ea1t.<\/p>\n\n\n\n
N\u1ebfu kh\u00f4ng, con ng\u01b0\u1eddi s\u1ebd ph\u1ea3i c\u00f2ng l\u01b0ng m\u00e0 gieo t\u1eebng h\u1ea1t t\u1eebng h\u1ea1t sao cho vu\u00f4ng g\u00f3c v\u1edbi \u0111\u1ea5t, th\u1eadt l\u00e0 phi\u1ec1n ph\u1ee9c bi\u1ebft bao nhi\u00eau!<\/p>\n","protected":false},"excerpt":{"rendered":"
H\u1ea1t c\u00e2y tr\u1ed3ng \u0111\u01b0\u1ee3c r\u1ea3i xu\u1ed1ng \u0111\u1ea5t, c\u00f3 h\u1ea1t \u0111\u1ee9ng th\u1eb3ng, c\u00f3 h\u1ea1t \u0111\u1ed5 nghi\u00eang, c\u00f3 h\u1ea1t n\u1eb1m s\u1ea5p, c\u00f3 h\u1ea1t l\u1ea1i n\u1eb1m ng\u1eeda, l\u1ea1i c\u00f3 h\u1ea1t b\u1ecb ch\u1ed5ng ng\u01b0\u1ee3c, ch\u00fang \u1edf m\u1ecdi t\u01b0 th\u1ebf kh\u00e1c nhau, th\u1ebf nh\u01b0ng t\u1ea1i sao r\u1ec5 c\u1ee7a th\u1ef1c v\u1eadt bao gi\u1edd c\u0169ng \u0111\u00e2m xu\u1ed1ng, c\u00f2n th\u00e2n th\u1ef1c v\u1eadt l\u1ea1i […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15,19],"tags":[],"class_list":["post-9620","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-tu-nhien"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9620","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=9620"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9620\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=9620"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=9620"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=9620"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}