B\u1ea3ng 38.1. Di\u1ec7n t\u00edch gieo tr\u1ed3ng c\u00e2y c\u00f4ng nghi\u1ec7p l\u00e2u n\u0103m, n\u0103m 2005<\/p>\n
(\u0110\u01a1n v\u1ecb: ngh\u00ecn ha)<\/p>\n
| Lo\u1ea1i c\u00e2y<\/th>\n | C\u1ea3 n\u01b0\u1edbc<\/th>\n | Trung du v\u00e0 mi\u1ec1n n\u00fai B\u1eafc B\u1ed9<\/th>\n | T\u00e2y Nguy\u00ean<\/th>\n<\/tr>\n | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C\u00e2y CN l\u00e2u n\u0103m<\/td>\n | 1633,6<\/td>\n | 91,0<\/td>\n | 634,3<\/td>\n<\/tr>\n | ||||||||||||||||||||||||
| C\u00e0 ph\u00ea<\/td>\n | 497,4<\/td>\n | 3,3<\/td>\n | 445,4<\/td>\n<\/tr>\n | ||||||||||||||||||||||||
| Ch\u00e8<\/td>\n | 122,5<\/td>\n | 80,0<\/td>\n | 27,0<\/td>\n<\/tr>\n | ||||||||||||||||||||||||
| Cao su<\/td>\n | 482,7<\/td>\n | –<\/td>\n | 109,4<\/td>\n<\/tr>\n | ||||||||||||||||||||||||
| C\u00e1c c\u00e2y kh\u00e1c<\/td>\n | 531,0<\/td>\n | 7,7<\/td>\n | 52,5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n a, V\u1ebd bi\u1ec3u \u0111\u1ed3 th\u00edch h\u1ee3p th\u1ec3 hi\u1ec7n di\u1ec7n t\u00edch c\u00e2y c\u00f4ng nghi\u1ec7p l\u00e2u n\u0103m c\u1ee7a c\u1ea3 n\u01b0\u1edbc, Trung du v\u00e0 mi\u1ec1n n\u00fai B\u1eafc B\u1ed9, T\u00e2y Nguy\u00ean n\u0103m 2005.<\/p>\n b, D\u1ef1a v\u00e0o ki\u1ebfn th\u1ee9c \u0111\u00e3 h\u1ecdc, h\u00e3y nh\u1eadn x\u00e9t v\u00e0 gi\u1ea3i th\u00edch v\u1ec1 nh\u1eefng s\u1ef1 gi\u1ed1ng nhau v\u00e0 kh\u00e1c nhau trong s\u1ea3n xu\u1ea5t c\u00e2y tr\u1ed3ng c\u00f4ng nghi\u1ec7p l\u00e2u n\u0103m gi\u1eefa hai v\u00f9ng n\u00e0y<\/p>\n L\u1eddi gi\u1ea3i:<\/b><\/p>\n a) V\u1ebd bi\u1ec3u \u0111\u1ed3 th\u00edch h\u1ee3p. Tr\u00ean nguy\u00ean t\u1eafc, c\u00f3 th\u1ec3 v\u1ebd bi\u1ec3u \u0111\u1ed3 c\u1ed9t ch\u1ed3ng ho\u1eb7c bi\u1ec3u \u0111\u1ed3 tr\u00f2n c\u00f3 k\u00edch th\u01b0\u1edbc kh\u00e1c nhau. Tuy nhi\u00ean, do s\u1ef1 ch\u00eanh l\u1ec7ch l\u1edbn v\u1ec1 quy m\u00f4 di\u1ec7n t\u00edch c\u00e2y c\u00f4ng nghi\u1ec7p l\u00e2u n\u0103m gi\u1eefa c\u1ea3 n\u01b0\u1edbc v\u1edbi Trung du v\u00e0 mi\u1ec1n n\u00fai B\u1eafc B\u1ed9, n\u00ean v\u1ebd bi\u1ec3u \u0111\u1ed3 tr\u00f2n l\u00e0 th\u00edch h\u1ee3p h\u01a1n c\u1ea3. Bi\u1ec3u \u0111\u1ed3 tr\u00f2n c\u0169ng ph\u1ea3n \u00e1nh c\u01a1 c\u1ea5u t\u1ed1t h\u01a1n bi\u1ec3u \u0111\u1ed3 c\u1ed9t ch\u1ed3ng.<\/p>\n – X\u1eed l\u00fd s\u1ed1 li\u1ec7u (%):<\/p>\n Ta c\u00f3, c\u00e1ch t\u00ednh c\u01a1 c\u1ea5u di\u1ec7n t\u00edch t\u1eebng lo\u1ea1i c\u00e2y trong t\u1ed5ng s\u1ed1 c\u00e2y c\u00f4ng nghi\u1ec7p l\u00e2u n\u0103m nh\u01b0 sau:<\/p>\n -% c\u01a1 c\u1ea5u di\u1ec7n t\u00edch c\u00e2y C\u00e0 ph\u00ea (ho\u1eb7c c\u00e2y kh\u00e1c)= (Di\u1ec7n t\u00edch c\u00e2y C\u00e0 ph\u00ea (ho\u1eb7c c\u00e2y kh\u00e1c)\/ T\u1ed5ng di\u1ec7n t\u00edch c\u00e2y CN ) x 100% = ?%<\/p>\n V\u00ed d\u1ee5:<\/p>\n + % c\u01a1 c\u1ea5u di\u1ec7n t\u00edch c\u00e2y C\u00e0 ph\u00ea c\u1ee7a C\u1ea3 n\u01b0\u1edbc = (497,4 \/ 1633,6) X 100 %= 30,4%<\/p>\n + % c\u01a1 c\u1ea5u di\u1ec7n t\u00edch c\u00e2y Ch\u00e8 c\u1ee7a TDMN B\u1eafc B\u1ed9 = (80,0 \/ 91,0) X 100% = 87,9%<\/p>\n + % c\u01a1 c\u1ea5u di\u1ec7n t\u00edch c\u00e2y C\u00e0 ph\u00ea c\u1ee7a C\u1ea3 n\u01b0\u1edbc = (52,5 \/ 634,3) X 100% = 8,3%<\/p>\n Cu\u1ed1i c\u00f9ng, ta \u0111\u01b0\u1ee3c b\u1ea3ng k\u1ebft qu\u1ea3 \u0111\u1ea7y \u0111\u1ee7 nh\u01b0 sau:<\/p>\n C\u01a1 c\u1ea5u di\u1ec7n t\u00edch gieo tr\u1ed3ng c\u00e2y c\u00f4ng nghi\u1ec7p l\u00e2u n\u0103m, n\u0103m 2005<\/p>\n (\u0110\u01a1n v\u1ecb: %)<\/p>\n
\u2013 T\u00ednh quy m\u00f4 b\u00e1n k\u00ednh \u0111\u01b0\u1eddng tr\u00f2n:<\/p>\n + \u0110\u1eb7t RTDMNBB<\/sub>\u00a0l\u00e0 b\u00e1n k\u00ednh \u0111\u01b0\u1eddng tr\u00f2n v\u00f9ng Trung du mi\u1ec1n n\u00fai B\u1eafc B\u1ed9 = 1,0 (\u0111\u01a1n v\u1ecb b\u00e1n k\u00ednh)<\/p>\n + RTN<\/sub>\u00a0l\u00e0 b\u00e1n k\u00ednh \u0111\u01b0\u1eddng tr\u00f2n v\u00f9ng T\u00e2y Nguy\u00ean = 2,6 (\u0111\u01a1n v\u1ecb b\u00e1n k\u00ednh)<\/p>\n + RCN<\/sub>\u00a0l\u00e0 b\u00e1n k\u00ednh \u0111\u01b0\u1eddng tr\u00f2n c\u1ee7a C\u1ea3 n\u01b0\u1edbc = 4,2 (\u0111\u01a1n v\u1ecb b\u00e1n k\u00ednh)<\/p>\n –\u00a0V\u1ebd bi\u1ec3u \u0111\u1ed3:<\/b><\/p>\n Bi\u1ec3u \u0111\u1ed3 th\u1ec3 hi\u1ec7n di\u1ec7n t\u00edch c\u00e2y c\u00f4ng nghi\u1ec7p l\u00e2u n\u0103m c\u1ee7a c\u1ea3 n\u01b0\u1edbc, Trung du v\u00e0 mi\u1ec1n n\u00fai B\u1eafc B\u1ed9, T\u00e2y Nguy\u00ean n\u0103m 2005<\/p>\n –\u00a0Nh\u1eadn x\u00e9t:<\/b><\/p>\n – Gi\u1ed1ng nhau:<\/p>\n + Quy m\u00f4:<\/p>\n L\u00e0 hai v\u00f9ng chuy\u00ean canh c\u00e2y c\u00f4ng nghi\u1ec7p l\u1edbn c\u1ee7a c\u1ea3 n\u01b0\u1edbc.<\/p>\n M\u1ee9c \u0111\u1ed9 t\u1eadp trung h\u00f3a \u0111\u1ea5t \u0111ai t\u01b0\u01a1ng \u0111\u1ed1i cao, c\u00e1c khu v\u1ef1c chuy\u00ean canh c\u00e0 ph\u00ea, ch\u00e8,… t\u1eadp trung tr\u00ean quy m\u00f4 l\u1edbn. \u0110i\u1ec1u \u0111\u00f3 thu\u1eadn l\u1ee3i cho vi\u1ec7c t\u1ea1o ra v\u00f9ng s\u1ea3n xu\u1ea5t h\u00e0ng h\u00f3a l\u1edbn, ph\u1ee5c v\u1ee5 nhu c\u1ea7u trong n\u01b0\u1edbc v\u00e0 xu\u1ea5t kh\u1ea9u.<\/p>\n + V\u1ec1 h\u01b0\u1edbng chuy\u00ean m\u00f4n h\u00f3a: c\u1ea3 hai v\u00f9ng \u0111\u1ec1u tr\u1ed3ng c\u00e2y c\u00f4ng nghi\u1ec7p l\u00e2u n\u0103m l\u00e0 ch\u1ee7 y\u1ebfu v\u00e0 \u0111\u1ea1t hi\u1ec7u qu\u1ea3 kinh t\u1ebf cao tr\u00ean h\u01b0\u1edbng chuy\u00ean m\u00f4n h\u00f3a n\u00e0y.<\/p>\n + V\u1ec1 \u0111i\u1ec1u ki\u1ec7n ph\u00e1t tri\u1ec3n:<\/p>\n C\u1ea3 hai v\u00f9ng \u0111\u1ec1u c\u00f3 ti\u1ec1m n\u0103ng phong ph\u00fa v\u1ec1 t\u1ef1 nhi\u00ean \u0111\u1ec3 ph\u00e1t tri\u1ec3n c\u00e2y c\u00f4ng nghi\u1ec7p l\u00e2u n\u0103m, trong \u0111\u00f3 ph\u1ea3i k\u1ec3 \u0111\u1ebfn th\u1ebf m\u1ea1nh v\u1ec1 \u0111\u1ea5t \u0111ai v\u00e0 kh\u00ed h\u1eadu.<\/p>\n D\u00e2n c\u01b0 c\u00f3 truy\u1ec1n th\u1ed1ng v\u00e0 kinh nghi\u1ec7m v\u1ec1 vi\u1ec7c tr\u1ed3ng v\u00e0 ch\u1ebf bi\u1ebfn s\u1ea3n ph\u1ea9m c\u00e2y c\u00f4ng nghi\u1ec7p.<\/p>\n \u0110\u01b0\u1ee3c s\u1ef1 quan t\u00e2m c\u1ee7a \u0110\u1ea3ng v\u00e0 Nh\u00e0 n\u01b0\u1edbc th\u00f4ng qua c\u00e1c ch\u1ee7 tr\u01b0\u01a1ng ch\u00ednh s\u00e1ch v\u1ec1 ph\u00e1t tri\u1ec3n c\u00e2y c\u00f4ng nghi\u1ec7p, v\u1ec1 \u0111\u1ea7u t\u01b0, x\u00e2y d\u1ef1ng c\u00e1c c\u01a1 s\u1edf ch\u1ebf bi\u1ebfn,…<\/p>\n – Kh\u00e1c nhau:<\/p>\n + V\u1ec1 quy m\u00f4:<\/p>\n T\u00e2y Nguy\u00ean l\u00e0 v\u00f9ng chuy\u00ean canh c\u00e2y c\u00f4ng nghi\u1ec7p l\u1edbn th\u1ee9 hai sau \u0110\u00f4ng Nam B\u1ed9, v\u1edbi m\u1ee9c \u0111\u1ed9 t\u1eadp trung h\u00f3a cao c\u1ee7a m\u1ed9t s\u00f4 s\u1ea3n ph\u1ea9m c\u00e2y c\u00f4ng nghi\u1ec7p n\u1ed5i ti\u1ebfng trong v\u00e0 ngo\u00e0i n\u01b0\u1edbc (c\u00e0 ph\u00ea).<\/p>\n Trung du v\u00e0 mi\u1ec1n n\u00fai B\u1eafc B\u1ed9 l\u00e0 v\u00f9ng chuy\u00ean canh c\u00e2y c\u00f4ng nghi\u1ec7p l\u1edbn th\u1ee9 ba sau \u0110\u00f4ng Nam B\u1ed9 v\u00e0 T\u00e2y Nguy\u00ean v\u1edbi m\u1ee9c \u0111\u1ed9 t\u1eadp trung h\u00f3a th\u1ea5p h\u01a1n (ngo\u00e0i ch\u00e8 \u0111\u01b0\u1ee3c tr\u1ed3ng th\u00e0nh c\u00e1c v\u00f9ng chuy\u00ean canh quy m\u00f4 l\u1edbn, c\u00f2n c\u00e1c c\u00e2y c\u00f4ng nghi\u1ec7p kh\u00e1c tr\u1ed3ng ph\u00e2n t\u00e1n tr\u00ean di\u1ec7n t\u00edch nh\u1ecf ch\u1ec9 mang t\u00ednh ch\u1ea5t \u0111\u1ecba ph\u01b0\u01a1ng).<\/p>\n + V\u1ec1 h\u01b0\u1edbng chuy\u00ean m\u00f4n h\u00f3a:<\/p>\n T\u00e2y Nguy\u00ean: c\u00e0 ph\u00ea, cao su, ch\u00e8.<\/p>\n Trung du v\u00e0 mi\u1ec1n n\u00fai B\u1eafc B\u1ed9: ch\u00e8.<\/p>\n + V\u1ec1 \u0111i\u1ec1u ki\u1ec7n ph\u00e1t tri\u1ec3n:<\/p>\n ++ \u0110i\u1ec1u ki\u1ec7n t\u1ef1 nhi\u00ean v\u00e0 t\u00e0i nguy\u00ean thi\u00ean nhi\u00ean<\/p>\n i) \u0110\u1ecba h\u00ecnh:<\/p>\n T\u00e2y Nguy\u00ean: c\u00e1c cao nguy\u00ean x\u1ebfp t\u1ea7ng v\u1edbi \u0111\u1ed9 cao trung b\u00ecnh 500 – 600m, b\u1ec1 m\u1eb7t t\u01b0\u01a1ng \u0111\u1ed1i b\u1eb1ng ph\u1eb3ng.<\/p>\n Trung du v\u00e0 mi\u1ec1n n\u00fai B\u1eafc B\u1ed9: n\u00fai v\u00e0 cao nguy\u00ean chi\u1ebfm ph\u1ea7n l\u1edbn di\u1ec7n t\u00edch, \u0111\u1ecba th\u1ebf hi\u1ec3m tr\u1edf, \u0111\u1ed9 chia c\u1eaft l\u1edbn.<\/p>\n S\u1ef1 kh\u00e1c nhau v\u1ec1 \u0111\u1ecba h\u00ecnh (\u0111\u1ed9 cao), trong m\u1ed9t ch\u1eebng m\u1ef1c nh\u1ea5t \u0111\u1ecbnh c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn m\u1ee9c \u0111\u1ed9 t\u1eadp trung h\u00f3a v\u00e0 chuy\u00ean m\u00f4n h\u00f3a c\u00e2y c\u00f4ng nghi\u1ec7p.<\/p>\n ii) \u0110\u1ea5t \u0111ai:<\/p>\n T\u00e2y Nguy\u00ean: ch\u1ee7 y\u1ebfu l\u00e0 \u0111\u1ea5t feralit ph\u00e1t tri\u1ec3n tr\u00ean \u0111\u00e1 badan.<\/p>\n Trung du v\u00e0 mi\u1ec1n n\u00fai B\u1eafc B\u1ed9: ph\u1ea7n l\u1edbn l\u00e0 \u0111\u1ea5t feralit tr\u00ean \u0111\u00e1 phi\u1ebfn, \u0111\u00e1 v\u00f4i v\u00e0 c\u00e1c \u0111\u00e1 m\u1eb9 kh\u00e1c.<\/p>\n iii) Kh\u00ed h\u1eadu:<\/p>\n T\u00e2y Nguy\u00ean: c\u00f3 t\u00ednh ch\u1ea5t c\u1eadn x\u00edch \u0111\u1ea1o v\u1edbi m\u1ed9t m\u00f9a m\u01b0a v\u00e0 m\u1ed9t m\u00f9a kh\u00f4 r\u00f5 r\u1ec7t, l\u1ea1i c\u00f3 s\u1ef1 ph\u00e2n h\u00f3a theo \u0111\u1ed9 cao. M\u00f9a kh\u00f4 thi\u1ebfu n\u01b0\u1edbc nghi\u00eam tr\u1ecdng, \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn vi\u1ec7c ph\u00e1t tri\u1ec3n c\u00e2y c\u00f4ng nghi\u1ec7p.<\/p>\n Trung du v\u00e0 mi\u1ec1n n\u00fai B\u1eafc B\u1ed9: kh\u00ed h\u1eadu nhi\u1ec7t \u0111\u1edbi gi\u00f3 m\u00f9a, c\u00f3 m\u00f9a \u0111\u00f4ng l\u1ea1nh, l\u1ea1i ch\u1ecbu \u1ea3nh h\u01b0\u1edfng s\u00e2u s\u1eafc c\u1ee7a \u0111i\u1ec1u ki\u1ec7n \u0111\u1ecba h\u00ecnh v\u00f9ng n\u00fai. V\u00ec th\u1ebf, \u1edf \u0111\u00e2y c\u00f3 \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i \u0111\u1ec3 ph\u00e1t tri\u1ec3n c\u00e2y c\u00f4ng nghi\u1ec7p c\u00f3 ngu\u1ed3n g\u1ed1c c\u1eadn nhi\u1ec7t (ch\u00e8). V\u00e0o n\u1eeda \u0111\u1ea7u m\u00f9a \u0111\u00f4ng c\u00f3 m\u01b0a ph\u00f9n \u1ea9m \u01b0\u1edbt c\u0169ng l\u00e0 \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i \u0111\u1ec3 c\u00e2y tr\u1ed3ng ph\u00e1t tri\u1ec3n. Tuy nhi\u00ean, v\u00e0o nh\u1eefng ng\u00e0y c\u00f3 gi\u00f3 m\u00f9a \u0110\u00f4ng B\u1eafc ho\u1ea1t \u0111\u1ed9ng m\u1ea1nh th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng nh\u01b0 s\u01b0\u01a1ng mu\u1ed1i, s\u01b0\u01a1ng gi\u00e1 v\u00e0 tuy\u1ebft r\u01a1i tr\u00ean v\u00f9ng n\u00fai cao, \u1ea3nh h\u01b0\u1edfng x\u1ea5u \u0111\u1ebfn vi\u1ec7c ph\u00e1t tri\u1ec3n c\u00e2y c\u00f4ng nghi\u1ec7p.<\/p>\n ++ \u0110i\u1ec1u ki\u1ec7n kinh t\u1ebf – x\u00e3 h\u1ed9i<\/p>\n i) D\u00e2n c\u01b0 v\u00e0 ngu\u1ed3n lao \u0111\u1ed9ng:<\/p>\n T\u00e2y Nguy\u00ean: c\u00f3 m\u1eadt \u0111\u1ed9 d\u00e2n s\u1ed1 trung b\u00ecnh 89 ng\u01b0\u1eddi\/km2 (n\u0103m 2006). \u0110\u00e2y l\u00e0 v\u00f9ng th\u01b0a d\u00e2n nh\u1ea5t n\u01b0\u1edbc ta.<\/p>\n Trung du v\u00e0 mi\u1ec1n n\u00fai B\u1eafc B\u1ed9: c\u00f3 m\u1eadt \u0111\u1ed9 d\u00e2n s\u1ed1 trung b\u00ecnh l\u00e0 119 ng\u01b0\u1eddi\/km (n\u0103m 2006).<\/p>\n C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng v\u00e0 c\u01a1 s\u1edf v\u1eadt ch\u1ea5t – k\u0129 thu\u1eadt:<\/p>\n Trung du v\u00e0 mi\u1ec1n n\u00fai B\u1eafc B\u1ed9: c\u00f3 m\u1ed9t s\u1ed1 tuy\u1ebfn \u0111\u01b0\u1eddng b\u1ed9: qu\u1ed1c l\u1ed9 1A, 2, 3, 5, 6,… v\u00e0 c\u00f3 5 tuy\u1ebfn \u0111\u01b0\u1eddng s\u1eaft n\u1ed1i v\u1edbi \u0110\u1ed3ng b\u1eb1ng s\u00f4ng H\u1ed3ng v\u00e0 c\u00e1c v\u00f9ng kh\u00e1c. C\u00e1c c\u01a1 s\u1edf ch\u1ebf bi\u1ebfn ch\u00e8 t\u1eadp trung \u1edf M\u1ed9c Ch\u00e2u (S\u01a1n La), Y\u00ean B\u00e1i, Th\u00e1i Nguy\u00ean.<\/p>\n T\u00e2y Nguy\u00ean: c\u01a1 s\u1edf v\u1eadt ch\u1ea5t – k\u0129 thu\u1eadt v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00f2n nhi\u1ec1u h\u1ea1n ch\u1ebf.<\/p>\n –\u00a0Gi\u1ea3i th\u00edch<\/b><\/p>\n Nguy\u00ean nh\u00e2n c\u1ee7a s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 h\u01b0\u1edbng chuy\u00ean m\u00f4n h\u00f3a c\u00e2y c\u00f4ng nghi\u1ec7p \u1edf hai v\u00f9ng l\u00e0 do c\u00f3 s\u1ef1 kh\u00e1c nhau v\u1ec1 \u0111i\u1ec1u ki\u1ec7n t\u1ef1 nhi\u00ean:<\/p>\n Trung du v\u00e0 mi\u1ec1n n\u00fai B\u1eafc B\u1ed9 c\u00f3 m\u00f9a \u0111\u00f4ng l\u1ea1nh, \u0111\u1ea5t feralit c\u00f3 \u0111\u1ed9 ph\u00ec kh\u00f4ng cao, \u0111\u1ecba h\u00ecnh n\u00fai b\u1ecb c\u1eaft x\u1ebb, \u00edt m\u1eb7t b\u1eb1ng r\u1ed9ng l\u1edbn, t\u1eeb \u0111\u00f3 d\u1eabn \u0111\u1ebfn quy m\u00f4 s\u1ea3n xu\u1ea5t nh\u1ecf.<\/p>\n T\u00e2y Nguy\u00ean c\u00f3 n\u1ec1n nhi\u1ec7t cao, \u0111\u1ecba h\u00ecnh t\u01b0\u01a1ng \u0111\u1ed1i b\u1eb1ng ph\u1eb3ng, \u0111\u1ea5t \u0111\u1ecf badan v\u1edbi \u0111\u1ed9 ph\u00ec cao, th\u00edch h\u1ee3p cho vi\u1ec7c c\u00e1c v\u00f9ng chuy\u00ean canh quy m\u00f4 l\u1edbn v\u00e0 t\u1eadp trung.<\/p>\n C\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m d\u00e2n c\u01b0 – x\u00e3 h\u1ed9i, l\u1ecbch s\u1eed khai th\u00e1c l\u00e3nh th\u1ed5, t\u1eadp qu\u00e1n s\u1ea3n xu\u1ea5t,…<\/p>\n Trung du v\u00e0 mi\u1ec1n n\u00fai B\u1eafc B\u1ed9: d\u00e2n c\u01b0 c\u00f3 kinh nghi\u1ec7m trong vi\u1ec7c tr\u1ed3ng v\u00e0 ch\u1ebf bi\u1ebfn ch\u00e8 t\u1eeb l\u00e2u \u0111\u1eddi.<\/p>\n T\u00e2y Nguy\u00ean: d\u00e2n c\u01b0 c\u00f3 kinh nghi\u1ec7m tr\u1ed3ng v\u00e0 ch\u1ebf bi\u1ebfn c\u00e0 ph\u00ea.<\/p>\n C\u00e2u 2:<\/b>\u00a0Cho b\u1ea3ng s\u00f4 li\u1ec7u sau:<\/span><\/p>\n B\u1ea3ng 38.2. S\u1ed1 l\u01b0\u1ee3ng tr\u00e2u b\u00f2, n\u0103m 2005<\/b><\/p>\n (\u0110\u01a1n v\u1ecb: ngh\u00ecn con)<\/p>\n a) H\u00e3y t\u00ednh t\u1ec9 tr\u1ecdng c\u1ee7a tr\u00e2u, b\u00f2 trong t\u1ed5ng \u0111\u00e0n tr\u00e2u b\u00f2 c\u1ee7a c\u1ea3 n\u01b0\u1edbc, Trung du v\u00e0 mi\u1ec1n n\u00fai B\u1eafc B\u1ed9, T\u00e2y Nguy\u00ean.<\/p>\n b, D\u1ef1a v\u00e0o b\u1ea3n \u0111\u1ed3 gi\u00e1o khoa treo t\u01b0\u1eddng N\u00f4ng nghi\u1ec7p, l\u00e2m nghi\u1ec7p, th\u1ee7y s\u1ea3n (ho\u1eb7c Atlat \u0110\u1ecba l\u00ed Vi\u1ec7t Nam) v\u00e0 c\u00e1c ki\u1ebfn th\u1ee9c \u0111\u00e3 h\u1ecdc, h\u00e3y cho bi\u1ebft:<\/p>\n – T\u1ea1i sao hai v\u00f9ng tr\u00ean \u0111\u1ec1u c\u00f3 th\u1ebf m\u1ea1nh v\u1ec1 ch\u0103n nu\u00f4i gia s\u1ee9c l\u1edbn?<\/p>\n – Th\u1ebf m\u1ea1nh n\u00e0y \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n nh\u01b0 th\u1ebf n\u00e0o trong t\u1ef7 tr\u1ecdng c\u1ee7a hai v\u00f9ng so v\u1edbi c\u1ea3 n\u01b0\u1edbc?<\/p>\n – T\u1ea1i sao \u1edf Trung du v\u00e0 mi\u1ec1n n\u00fai B\u1eafc b\u1ed9, tr\u00e2u \u0111\u01b0\u1ee3c nu\u00f4i nhi\u1ec1u h\u01a1n b\u00f2, c\u00f2n \u1edf T\u00e2y Nguy\u00ean th\u00ec ng\u01b0\u1ee3c l\u1ea1i?<\/p>\n H\u01b0\u1edbng d\u1eabn gi\u1ea3i:<\/b><\/p>\n a) T\u1ec9 tr\u1ecdng c\u1ee7a \u0111\u00e0n tr\u00e2u v\u00e0 \u0111\u00e0n b\u00f2 c\u1ee7a Trung du v\u00e0 mi\u1ec1n n\u00fai B\u1eafc B\u1ed9, T\u00e2y Nguy\u00ean trong t\u1ed5ng \u0111\u00e0n tr\u00e2u b\u00f2 c\u1ee7a c\u1ea3 n\u01b0\u1edbc.<\/p>\n – \u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c: Tr\u00e2u (ho\u1eb7c B\u00f2) c\u1ee7a v\u00f9ng \/ (t\u1ed5ng Tr\u00e2u + B\u00f2) x 100% = %<\/p>\n – V\u00ed d\u1ee5: %Tr\u00e2u c\u1ee7a C\u1ea3 n\u01b0\u1edbc = 2922,2 \/ (2922,2 + 5540,7) x 100% = 34,5%<\/p>\n – Ho\u1eb7c %B\u00f2 c\u1ee7a T\u00e2y Nguy\u00ean = 616,9 \/ (71,9 + 616,9) x 100% = 89,6%<\/p>\n Cu\u1ed1i c\u00f9ng, ta \u0111\u01b0\u1ee3c b\u1ea3ng k\u1ebft qu\u1ea3 \u0111\u1ea7y \u0111\u1ee7 nh\u01b0 sau:<\/p>\n T\u1ec9 tr\u1ecdng c\u1ee7a tr\u00e2u, b\u00f2 trong t\u1ed5ng \u0111\u00e0n tr\u00e2u b\u00f2 c\u1ee7a c\u1ea3 n\u01b0\u1edbc, Trung du v\u00e0 mi\u1ec1n n\u00fai B\u1eafc B\u1ed9, T\u00e2y Nguy\u00ean<\/p>\n (\u0110\u01a1n v\u1ecb: %)<\/p>\n b,<\/p>\n + \u0110\u00e0n tr\u00e2u t\u1eadp trung ch\u1ee7 y\u1ebfu \u1edf Trung du v\u00e0 mi\u1ec1n n\u00fai B\u1eafc B\u1ed9 v\u00ec ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec1u ki\u1ec7n kh\u00ed h\u1eadu l\u1ea1nh \u1ea9m. C\u00f3 nhi\u1ec1u \u0111\u1ed3ng c\u1ecf n\u1eb1m r\u1ea3i r\u00e1c ph\u00f9 h\u1ee3p v\u1edbi t\u1eadp qu\u00e1n ch\u0103n th\u1ea3 trong r\u1eebng. \u0110\u00e0n b\u00f2 c\u0169ng ph\u00e1t tri\u1ec3n kh\u00e1 v\u00ec c\u00f3 \u0111\u1ed3ng c\u1ecf l\u1edbn tr\u00ean cao nguy\u00ean M\u1ed9c Ch\u00e2u, n\u00ean c\u00f3 \u0111i\u1ec1u ki\u1ec7n nu\u00f4i b\u00f2 s\u1eefa t\u1eadp trung. Giao th\u00f4ng \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n n\u00ean vi\u1ec7c v\u1eadn chuy\u1ec3n \u0111\u1ebfn c\u00e1c th\u1ecb tr\u01b0\u1eddng ti\u00eau th\u1ee5 c\u0169ng thu\u1eadn l\u1ee3i.<\/p>\n + \u0110\u00e0n b\u00f2 nu\u00f4i nhi\u1ec1u \u1edf T\u00e2y Nguy\u00ean v\u00ec \u1edf \u0111\u00e2y c\u00f3 m\u1ed9t s\u1ed1 \u0111\u1ed3ng c\u1ecf l\u1edbn, t\u1eadp trung th\u00edch h\u1ee3p v\u1edbi ch\u0103n nu\u00f4i b\u00f2 \u0111\u00e0n, b\u00f2 s\u1eefa theo quy m\u00f4 l\u1edbn. Tuy nhi\u00ean ch\u0103n nu\u00f4i b\u00f2 ch\u01b0a ph\u00e1t tri\u1ec3n t\u01b0\u01a1ng x\u1ee9ng v\u1edbi ti\u1ec1m n\u0103ng c\u1ee7a v\u00f9ng.<\/p>\n","protected":false},"excerpt":{"rendered":" C\u00e2u 1:\u00a0Cho b\u1ea3ng s\u1ed1 li\u1ec7u sau: B\u1ea3ng 38.1. Di\u1ec7n t\u00edch gieo tr\u1ed3ng c\u00e2y c\u00f4ng nghi\u1ec7p l\u00e2u n\u0103m, n\u0103m 2005 (\u0110\u01a1n v\u1ecb: ngh\u00ecn ha) Lo\u1ea1i c\u00e2y C\u1ea3 n\u01b0\u1edbc Trung du v\u00e0 mi\u1ec1n n\u00fai B\u1eafc B\u1ed9 T\u00e2y Nguy\u00ean C\u00e2y CN l\u00e2u n\u0103m 1633,6 91,0 634,3 C\u00e0 ph\u00ea 497,4 3,3 445,4 Ch\u00e8 122,5 80,0 27,0 Cao su 482,7 […]<\/p>\n","protected":false},"author":3,"featured_media":24044,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[1297],"tags":[1415,1414],"yoast_head":"\n |
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