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{"id":25411,"date":"2018-04-05T18:37:28","date_gmt":"2018-04-05T11:37:28","guid":{"rendered":"https:\/\/lop12.edu.vn\/?p=25411"},"modified":"2018-04-05T18:37:28","modified_gmt":"2018-04-05T11:37:28","slug":"bai-23-thuc-hanh-phan-tich-su-chuyen-dich-co-cau-nganh-trong-trot-2","status":"publish","type":"post","link":"https:\/\/lop12.edu.vn\/bai-23-thuc-hanh-phan-tich-su-chuyen-dich-co-cau-nganh-trong-trot-2\/","title":{"rendered":"B\u00e0i 23: Th\u1ef1c h\u00e0nh: Ph\u00e2n t\u00edch s\u1ef1 chuy\u1ec3n d\u1ecbch c\u01a1 c\u1ea5u ng\u00e0nh tr\u1ed3ng tr\u1ecdt"},"content":{"rendered":"

B\u00e0i 1 trang 38 T\u1eadp b\u1ea3n \u0111\u1ed3 \u0110\u1ecba L\u00ed 12:<\/b>\u00a0T\u1eeb h\u00ecnh 22 trong SGK \u0110\u1ecba l\u00ed 12, em h\u00e3y:<\/span><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

\u0110i\u1ec1n c\u00e1c s\u1ed1 li\u1ec7u ph\u00f9 h\u1ee3p v\u00e0o b\u1ea3ng th\u1ed1ng k\u00ea d\u01b0\u1edbi \u0111\u00e2y:<\/b><\/p>\n\n\n\n\n\n\n
N\u0103m<\/td>\nT\u1ed5ng s\u1ed1<\/td>\nChia ra<\/td>\n<\/tr>\n
C\u00e2y l\u01b0\u01a1ng th\u1ef1c<\/td>\nRau, \u0111\u1eadu<\/td>\nC\u00e2y c\u00f4ng nghi\u1ec7p<\/td>\nC\u00e2y \u0103n qu\u1ea3<\/td>\nC\u00e2y kh\u00e1c<\/td>\n<\/tr>\n
1990<\/td>\n100<\/td>\n67.1<\/td>\n7.0<\/td>\n13.5<\/td>\n10.1<\/td>\n2.3<\/td>\n<\/tr>\n
2005<\/td>\n100<\/td>\n59.2<\/td>\n8.3<\/td>\n23.7<\/td>\n7.3<\/td>\n1.5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Nh\u1eadn x\u00e9t v\u00e0 gi\u1ea3i th\u00edch s\u1ef1 chuy\u1ec3n d\u1ecbch c\u01a1 c\u1ea5u gi\u00e1 tr\u1ecb s\u1ea3n xu\u1ea5t c\u1ee7a ng\u00e0nh tr\u1ed3ng tr\u1ecdt n\u01b0\u1edbc ta trong giai \u0111o\u1ea1n 1990 \u2013 2005.<\/b><\/p>\n

– T\u1ec9 tr\u1ecdng c\u00e2y l\u01b0\u01a1ng th\u1ef1c v\u00e0 c\u00e2y \u0103n qu\u1ea3 c\u00f3 gi\u1ea3m nh\u1eb9 (t\u1eeb 67,1% xu\u1ed1ng 59,2% v\u00e0 10,1% xu\u1ed1ng 7,3%), c\u00e1c lo\u1ea1i c\u00e2y kh\u00e1c c\u0169ng gi\u1ea3m nh\u1eb9 t\u1eeb 2,3% xu\u1ed1ng 1,5%.<\/p>\n

– C\u00e2y c\u00f4ng nghi\u1ec7p t\u0103ng nhanh t\u1eeb 13,5% l\u00ean 23,7%; c\u00e2y rau \u0111\u1eadu t\u0103ng nh\u1eb9 t\u1eeb 7% l\u00ean 8,3%.<\/p>\n

– Gi\u1ea3i th\u00edch: l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a ch\u00ednh s\u00e1ch ph\u00e1t tri\u1ec3n kinh t\u1ebf c\u0169ng nh\u01b0 ng\u00e0nh c\u00f4ng nghi\u1ec7p n\u01b0\u1edbc ta. \u0110\u1ea9y m\u1ea1nh ph\u00e1t tri\u1ec3n c\u00e2y c\u00f4ng nghi\u1ec7p nh\u1eb1m khai th\u00e1c th\u1ebf m\u1ea1nh v\u00e0 cung c\u1ea5p nguy\u00ean li\u1ec7u cho c\u00f4ng nghi\u1ec7p ch\u1ebf bi\u1ebfn c\u0169ng nh\u01b0 xu\u1ea5t kh\u1ea9u.<\/p>\n

B\u00e0i 2 trang 38 T\u1eadp b\u1ea3n \u0111\u1ed3 \u0110\u1ecba L\u00ed 12:<\/b>D\u1ef1a v\u00e0o b\u1ea3ng 23.1 SGK \u0110\u1ecba l\u00ed 12, em h\u00e3y:<\/span><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

T\u00ednh t\u1ed1c \u0111\u1ed9 t\u0103ng tr\u01b0\u1edfng gi\u00e1 tr\u1ecb s\u1ea3n xu\u1ea5t c\u1ee7a ng\u00e0nh tr\u1ed3ng tr\u1ecdt theo t\u1eebng nh\u00f3m c\u00e2y tr\u1ed3ng (l\u1ea5y n\u0103m 1990=100%).<\/b><\/p>\n\n\n\n\n\n\n\n
N\u0103m<\/td>\nT\u1ed5ng s\u1ed1<\/td>\nC\u00e2y l\u01b0\u01a1ng th\u1ef1c<\/td>\nRau, \u0111\u1eadu<\/td>\nC\u00e2y c\u00f4ng nghi\u1ec7p<\/td>\nC\u00e2y \u0103n qu\u1ea3<\/td>\nC\u00e2y kh\u00e1c<\/td>\n<\/tr>\n
1990<\/td>\n100<\/td>\n100<\/td>\n100<\/td>\n100<\/td>\n100<\/td>\n100<\/td>\n<\/tr>\n
1995<\/td>\n133,4<\/td>\n126,5<\/td>\n143,3<\/td>\n181,6<\/td>\n111,4<\/td>\n122,0<\/td>\n<\/tr>\n
2000<\/td>\n183,2<\/td>\n165,7<\/td>\n182,1<\/td>\n325,5<\/td>\n121,4<\/td>\n132,1<\/td>\n<\/tr>\n
2005<\/td>\n217,6<\/td>\n217,6<\/td>\n256,8<\/td>\n382,3<\/td>\n160,0<\/td>\n142,3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Nh\u1eadn x\u00e9t v\u00e0 gi\u1ea3i th\u00edch t\u1ed1c \u0111\u1ed9 t\u0103ng tr\u01b0\u1edfng c\u1ee7a ng\u00e0nh tr\u1ed3ng tr\u1ecdt n\u00f3i chung v\u00e0 t\u1eebng nh\u00f3m c\u00e2y tr\u1ed3ng n\u00f3i ri\u00eang.<\/b><\/p>\n

– Ng\u00e0nh tr\u1ed3ng tr\u1ecdt c\u00f3 t\u1ed1c \u0111\u1ed9 t\u0103ng tr\u01b0\u1edfng nhanh v\u00e0 li\u00ean t\u1ee5c (100% l\u00ean 217% n\u0103m 2005).<\/p>\n

– C\u00e2y c\u00f4ng nghi\u1ec7p c\u00f3 t\u1ed1c \u0111\u1ed9 t\u0103ng tr\u01b0\u1edfng nhanh nh\u1ea5t (382,3 % n\u0103m 2005), ti\u1ebfp \u0111\u1ebfn l\u00e0 rau \u0111\u1eadu (256,8%).<\/p>\n

– C\u00e2y l\u01b0\u01a1ng th\u1ef1c, c\u00e2y \u0103n qu\u1ea3 v\u00e0 c\u00e1c lo\u1ea1i c\u00e2y kh\u00e1c c\u00f3 t\u1ed1c \u0111\u1ed9 t\u0103ng tr\u01b0\u1edfng th\u1ea5p h\u01a1n t\u1ed1c \u0111\u1ed9 t\u0103ng tr\u01b0\u1edfng ng\u00e0nh tr\u1ed3ng tr\u1ecdt (l\u1ea7n l\u01b0\u1ee3t l\u00e0 191.8%. 160,0% v\u00e0 142.3%).<\/p>\n

– Gi\u1ea3i th\u00edch: Ng\u00e0nh tr\u1ed3ng tr\u1ecdt \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng v\u1edbi \u0111\u1eddi s\u1ed1ng, n\u1ec1n kinh t\u1ebf n\u01b0\u1edbc ta, v\u00ec v\u1eady lu\u00f4n \u0111\u01b0\u1ee3c ch\u00fa tr\u1ecdng ph\u00e1t tri\u1ec3n. Ch\u00ednh s\u00e1ch hi\u1ec7n nay l\u00e0 \u0111\u1ea9y m\u1ea1nh c\u00e2y c\u00f4ng nghi\u1ec7p, c\u00e2y \u0103n qu\u1ea3 \u0111\u1ec3 l\u00e0m nguy\u00ean li\u1ec7u cho c\u00f4ng nghi\u1ec7p ch\u1ebf bi\u1ebfn v\u00e0 xu\u1ea5t kh\u1ea9u.<\/p>\n

B\u00e0i 3 trang 39 T\u1eadp b\u1ea3n \u0111\u1ed3 \u0110\u1ecba L\u00ed 12:<\/b>\u00a0D\u1ef1a v\u00e0o b\u1ea3ng s\u1ed1 li\u1ec7u d\u01b0\u1edbi \u0111\u00e2y:<\/span><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

Di\u1ec7n t\u00edch gieo tr\u1ed3ng c\u00e2y c\u00f4ng nghi\u1ec7p c\u1ee7a n\u01b0\u1edbc ta (ngh\u00ecn ha)<\/b><\/p>\n\n\n\n\n\n\n\n\n\n
N\u0103m<\/td>\nDi\u1ec7n t\u00edch c\u00e2y c\u00f4ng nghi\u1ec7p<\/td>\nChia ra<\/td>\n<\/tr>\n
C\u00e2y c\u00f4ng nghi\u1ec7p h\u00e0ng n\u0103m<\/td>\nC\u00e2y c\u00f4ng nghi\u1ec7p l\u00e2u n\u0103m<\/td>\n<\/tr>\n
1980<\/td>\n627,7 (100%)<\/td>\n371,7 (59,2%)<\/td>\n256,0 (40,8%)<\/td>\n<\/tr>\n
1990<\/td>\n1.199,3 (100%)<\/td>\n542,0 (45.2%)<\/td>\n657,3 (54,8%)<\/td>\n<\/tr>\n
1995<\/td>\n1.619,0 (100%)<\/td>\n716,7 (44.3%)<\/td>\n902,3 (55.7%)<\/td>\n<\/tr>\n
2000<\/td>\n2.229,4 (100%)<\/td>\n778,1 (34.9%)<\/td>\n1.451,3 (65.1%)<\/td>\n<\/tr>\n
2008<\/td>\n2.691,9 (100%)<\/td>\n806,1 (30%)<\/td>\n1.885,8 (70%)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

V\u1ebd bi\u1ec3u \u0111\u1ed3 mi\u1ec1n th\u1ec3 hi\u1ec7n s\u1ef1 thay \u0111\u1ed5i c\u01a1 c\u1ea5u di\u1ec7n t\u00edch gieo tr\u1ed3ng c\u00e2y c\u00f4ng nghi\u1ec7p c\u1ee7a n\u01b0\u1edbc ta ph\u00e2n theo c\u00e2y h\u00e0ng n\u0103m v\u00e0 c\u00e2y l\u00e2u n\u0103m trong giai \u0111o\u1ea1n 1980 \u2013 2008 (tr\u01b0\u1edbc khi v\u1ebd, h\u00e3y x\u1eed l\u00ed s\u1ed1 li\u1ec7u v\u00e0 \u0111i\u1ec1n v\u00e0o b\u1ea3ng tr\u00ean).<\/b><\/p>\n

\"\"<\/p>\n

Nh\u1eadn x\u00e9t v\u00e0 gi\u1ea3i th\u00edch s\u1ef1 thay \u0111\u1ed5i \u0111\u00f3:<\/b><\/p>\n

– Di\u1ec7n t\u00edch c\u00e2y c\u00f4ng nghi\u1ec7p h\u1eb1ng n\u0103m gi\u1ea3m \u0111\u1ec1u, li\u00ean t\u1ee5c t\u1eeb 59,2% (1980) xu\u1ed1ng 30% (2008).<\/p>\n

– C\u00e2y c\u00f4ng nghi\u1ec7p l\u00e2u n\u0103m t\u0103ng nhanh, li\u00ean t\u1ee5c t\u1eeb 40,8% (1980) l\u00ean 70% (2008).<\/p>\n

– Gi\u1ea3i th\u00edch: xu h\u01b0\u1edbng chuy\u1ec3n d\u1ecbch n\u00e0y ph\u00f9 h\u1ee3p v\u1edbi ch\u00ednh s\u00e1ch \u0111\u1ea9y m\u1ea1nh c\u00e2y l\u00e2u n\u0103m \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nguy\u00ean li\u1ec7u cho c\u00f4ng nghi\u1ec7p ch\u1ebf bi\u1ebfn v\u00e0 xu\u1ea5t kh\u1ea9u.<\/p>\n","protected":false},"excerpt":{"rendered":"

B\u00e0i 1 trang 38 T\u1eadp b\u1ea3n \u0111\u1ed3 \u0110\u1ecba L\u00ed 12:\u00a0T\u1eeb h\u00ecnh 22 trong SGK \u0110\u1ecba l\u00ed 12, em h\u00e3y: L\u1eddi gi\u1ea3i: \u0110i\u1ec1n c\u00e1c s\u1ed1 li\u1ec7u ph\u00f9 h\u1ee3p v\u00e0o b\u1ea3ng th\u1ed1ng k\u00ea d\u01b0\u1edbi \u0111\u00e2y: N\u0103m T\u1ed5ng s\u1ed1 Chia ra C\u00e2y l\u01b0\u01a1ng th\u1ef1c Rau, \u0111\u1eadu C\u00e2y c\u00f4ng nghi\u1ec7p C\u00e2y \u0103n qu\u1ea3 C\u00e2y kh\u00e1c 1990 100 67.1 7.0 […]<\/p>\n","protected":false},"author":3,"featured_media":25412,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[1308],"tags":[1438,1437],"yoast_head":"\nB\u00e0i 23: Th\u1ef1c h\u00e0nh: Ph\u00e2n t\u00edch s\u1ef1 chuy\u1ec3n d\u1ecbch c\u01a1 c\u1ea5u ng\u00e0nh tr\u1ed3ng tr\u1ecdt<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lop12.edu.vn\/bai-23-thuc-hanh-phan-tich-su-chuyen-dich-co-cau-nganh-trong-trot-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"B\u00e0i 23: Th\u1ef1c h\u00e0nh: Ph\u00e2n t\u00edch s\u1ef1 chuy\u1ec3n d\u1ecbch c\u01a1 c\u1ea5u ng\u00e0nh tr\u1ed3ng tr\u1ecdt\" \/>\n<meta property=\"og:description\" content=\"B\u00e0i 1 trang 38 T\u1eadp b\u1ea3n \u0111\u1ed3 \u0110\u1ecba L\u00ed 12:\u00a0T\u1eeb h\u00ecnh 22 trong SGK \u0110\u1ecba l\u00ed 12, em h\u00e3y: L\u1eddi gi\u1ea3i: \u0110i\u1ec1n c\u00e1c s\u1ed1 li\u1ec7u ph\u00f9 h\u1ee3p v\u00e0o b\u1ea3ng th\u1ed1ng k\u00ea d\u01b0\u1edbi \u0111\u00e2y: N\u0103m T\u1ed5ng s\u1ed1 Chia ra C\u00e2y l\u01b0\u01a1ng th\u1ef1c Rau, \u0111\u1eadu C\u00e2y c\u00f4ng nghi\u1ec7p C\u00e2y \u0103n qu\u1ea3 C\u00e2y kh\u00e1c 1990 100 67.1 7.0 […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/lop12.edu.vn\/bai-23-thuc-hanh-phan-tich-su-chuyen-dich-co-cau-nganh-trong-trot-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Lop12.edu.vn - 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