C\u1ea3i ng\u1ed3ng L\u1ea1ng S\u01a1n c\u00f3 ngu\u1ed3n g\u1ed1c t\u1eeb t\u1ec9nh L\u1ea1ng S\u01a1n. \u0110\u00e2y l\u00e0 t\u1ec9nh c\u00f3 \u0111i\u1ec1u ki\u1ec7n kh\u00ed h\u1eadu, \u0111\u1ea5t \u0111ai th\u00edch h\u1ee3p \u0111\u1ec3 s\u1ea3n xu\u1ea5t nhi\u1ec1u lo\u1ea1i rau c\u1ea3i, trong \u0111\u00f3 ph\u1ea3i k\u1ec3 \u0111\u1ebfn nh\u00f3m rau c\u1ea3i \u0103n ng\u1ed3ng. Hi\u1ec7n nay nhu c\u1ea7u ti\u00eau th\u1ee5 ng\u1ed3ng c\u1ea3i \u0111ang ng\u00e0y c\u00e0ng t\u0103ng, th\u1ecb tr\u01b0\u1eddng ng\u00e0y c\u00e0ng m\u1edf r\u1ed9ng. Kh\u00f4ng ch\u1ec9 \u1edf L\u1ea1ng S\u01a1n, m\u00e0 \u1edf H\u00e0 N\u1ed9i v\u00e0 nhi\u1ec1u n\u01a1i kh\u00e1c, ng\u1ed3ng c\u1ea3i c\u0169ng \u0111\u00e3 tr\u1edf th\u00e0nh lo\u1ea1i rau \u0111\u01b0\u1ee3c \u0111\u00f4ng \u0111\u1ea3o ng\u01b0\u1eddi ti\u00eau d\u00f9ng \u01b0a chu\u1ed9ng. Hi\u1ec7n t\u1ea1i m\u1ed9t s\u1ed1 gi\u1ed1ng c\u1ea3i \u0103n ng\u1ed3ng ngu\u1ed3n g\u1ed1c t\u1eeb Trung qu\u1ed1c \u0111\u01b0\u1ee3c nh\u1eadp v\u00e0 tr\u1ed3ng kh\u00e1 ph\u1ed5 bi\u1ebfn, \u0111ang c\u00f3 chi\u1ec1u h\u01b0\u1edbng l\u1ea5n \u00e1t c\u00e1c gi\u1ed1ng \u0111\u1ecba ph\u01b0\u01a1ng. Gi\u1ed1ng c\u1ea3i ng\u1ed3ng L\u1ea1ng S\u01a1n, hay c\u00f2n g\u1ecdi c\u1ea3i b\u1eafp \u0103n ng\u1ed3ng, ngu\u1ed3n g\u1ed1c \u0111\u1ecba ph\u01b0\u01a1ng, \u0111\u01b0\u1ee3c n\u00f4ng d\u00e2n l\u01b0u gi\u1eef v\u00e0 tr\u1ed3ng t\u1eeb r\u1ea5t l\u00e2u \u0111\u1eddi. \u0110\u00e2y l\u00e0 lo\u1ea1i rau c\u1ea3i v\u1eeba \u0103n b\u1eafp v\u1eeba \u0103n ng\u1ed3ng c\u00f3 ph\u1ea9m ch\u1ea5t \u0103n ngon, d\u1ec5 ch\u1ebf bi\u1ebfn, c\u00f3 th\u1ec3 \u0103n lu\u1ed9c, x\u00e0o \u0111\u1ec1u \u0111\u01b0\u1ee3c. Sau khi thu ho\u1ea1ch b\u1eafp c\u1ea3i, g\u1ed1c c\u1ee7a gi\u1ed1ng c\u1ea3i n\u00e0y ti\u1ebfp t\u1ee5c \u0111\u01b0\u1ee3c ch\u0103m s\u00f3c v\u00e0 s\u1ebd cho thu ho\u1ea1ch ng\u1ed3ng. Ng\u1ed3ng c\u1ea3i n\u00e0y \u0103n \u0111\u1eadm v\u00e0 gi\u00f2n h\u01a1n c\u00e1c gi\u1ed1ng rau c\u1ea3i l\u00e0n v\u00e0 c\u1ea3i ng\u1ed3ng kh\u00e1c. Tuy v\u1eady, do kh\u00f4ng \u0111\u01b0\u1ee3c quan t\u00e2m b\u1ea3o t\u1ed3n v\u00e0 ph\u00e1t tri\u1ec3n, gi\u1ed1ng c\u1ea3i n\u00e0y hi\u1ec7n b\u1ecb l\u1eabn t\u1ea1p v\u00e0 tho\u00e1i ho\u00e1, n\u0103ng su\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng gi\u1ea3m s\u00fat. C\u00e1c nghi\u00ean c\u1ee9u v\u1ec1 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m n\u00f4ng sinh h\u1ecdc c\u0169ng nh\u01b0 c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt canh t\u00e1c c\u00f2n \u00edt. Th\u00eam v\u00e0o \u0111\u00f3 t\u1eebng h\u1ed9 n\u00f4ng d\u00e2n \u0111\u00e3 b\u00f3n ph\u00e2n tr\u00ean c\u00e2y c\u1ea3i ng\u1ed3ng theo kinh nghi\u1ec7m c\u1ee7a h\u1ecd. V\u00ec v\u1eady vi\u1ec7c nghi\u00ean c\u1ee9u \u1ea3nh h\u01b0\u1edfng c\u1ee7a c\u00e1c m\u1ee9c ph\u00e2n b\u00f3n kh\u00e1c nhau cho gi\u1ed1ng rau c\u1ea3i n\u00e0y l\u00e0 vi\u1ec7c l\u00e0m c\u1ea7n thi\u1ebft nh\u1eb1m t\u00ecm ra c\u00f4ng th\u1ee9c t\u1ed1i \u01b0u nh\u1ea5t n\u00e2ng cao n\u0103ng su\u1ea5t c\u0169ng nh\u01b0 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a gi\u1ed1ng.<\/p>\n\n\n\n
K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y: <\/p>\n\n\n\n
C\u1ea3i ng\u1ed3ng L\u1ea1ng S\u01a1n sinh tr\u01b0\u1edfng, ph\u00e1t tri\u1ec3n cho n\u0103ng su\u1ea5t t\u1ed1t h\u01a1n khi b\u00f3n \u0111\u1ea1m. M\u1eb7c d\u1ea7u \u1edf m\u1ee9c b\u00f3n 3 (140N) cho s\u1ed1 l\u00e1, d\u00e0i l\u00e1, r\u1ed9ng l\u00e1 cao h\u01a1n, t\u0103ng tr\u01b0\u1edfng nhanh h\u01a1n \u1edf m\u1ee9c b\u00f3n 2 (130N) nh\u01b0ng \u1edf m\u1ee9c b\u00f3n 2 cho n\u0103ng su\u1ea5t ng\u1ed3ng v\u00e0 b\u1eafp cao h\u01a1n l\u1ea7n l\u01b0\u1ee3t l\u00e0 39,5 t\u1ea5n\/ha v\u00e0 23,6 t\u1ea5n\/ha v\u00e0 c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t r\u00f5 r\u00e0ng v\u1edbi kh\u00f4ng b\u00f3n v\u00e0 c\u00e1c m\u1ee9c b\u00f3n c\u00f2n l\u1ea1i.<\/p>\n\n\n\n