{"id":8603,"date":"2009-03-24T02:25:36","date_gmt":"2009-03-23T19:25:36","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2009\/03\/nghien-cuu-su-dung-van-nua-ep-3-lop-thay-the-van-go-trong-nha-o-cua-nhan-dan-vung-nui-phia-bac\/"},"modified":"2019-09-25T10:13:55","modified_gmt":"2019-09-25T03:13:55","slug":"nghien-cuu-su-dung-van-nua-ep-3-lop-thay-the-van-go-trong-nha-o-cua-nhan-dan-vung-nui-phia-bac","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/nghien-cuu-su-dung-van-nua-ep-3-lop-thay-the-van-go-trong-nha-o-cua-nhan-dan-vung-nui-phia-bac\/","title":{"rendered":"Nghi\u00ean c\u1ee9u s\u1eed d\u1ee5ng v\u00e1n N\u1ee9a \u00e9p 3 l\u1edbp thay th\u1ebf v\u00e1n g\u1ed7 trong nh\u00e0 \u1edf c\u1ee7a nh\u00e2n d\u00e2n v\u00f9ng n\u00fai ph\u00eda B\u1eafc"},"content":{"rendered":"

Nguy\u1ec5n M\u1ea1nh Ho\u1ea1t, Tr\u1ea7n C\u00f4ng, <\/em><\/strong><\/p>\n

Tr\u1ea7n H\u1eefu Th\u00e0nh*, Nguy\u1ec5n Nh\u1eadt Chi\u00eau**<\/h1>\n

Tre, n\u1ee9a l\u00e0 c\u00e1c lo\u00e0i c\u00e2y sinh tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n nhanh v\u00e0 \u0111\u1eb7c bi\u1ec7t g\u1eafn b\u00f3 v\u1edbi nh\u00e2n d\u00e2n ta t\u1eeb x\u01b0a t\u1edbi nay v\u00ec n\u00f3 cung c\u1ea5p ch\u1ea5t \u0111\u1ed1t, v\u1eadt li\u1ec7u l\u00e0m nh\u00e0, d\u1ee5ng c\u1ee5 ph\u1ee5c v\u1ee5 sinh ho\u1ea1t, c\u00f4ng c\u1ee5 s\u1ea3n xu\u1ea5t, ph\u01b0\u01a1ng ti\u1ec7n ho\u1ea1t \u0111\u1ed9ng v\u0103n ho\u00e1,… \u1edf mi\u1ec1n n\u00fai, h\u1ea7u nh\u01b0 t\u1ea5t c\u1ea3 m\u1ecdi sinh ho\u1ea1t kinh t\u1ebf, v\u0103n ho\u00e1, \u0111\u1eddi s\u1ed1ng \u0111\u1ec1u c\u00f3 m\u1eb7t c\u1ee7a c\u00e2y n\u1ee9a. V\u1edbi \u00fd t\u01b0\u1edfng t\u00ecm ki\u1ebfm m\u1ed9t lo\u1ea1i v\u1eadt li\u1ec7u t\u1eeb tre, n\u1ee9a \u0111\u1ec3 thay th\u1ebf g\u1ed7 nh\u01b0ng r\u1ebb h\u01a1n g\u1ed7 v\u00e0 c\u00f3 th\u1ec3 s\u1ea3n xu\u1ea5t c\u00f4ng nghi\u1ec7p, d\u00f9ng l\u00e0m v\u1eadt li\u1ec7u trong nh\u00e0 \u1edf cho nh\u00e2n d\u00e2n v\u00f9ng n\u00fai, m\u1ed9t s\u1ed1 nghi\u00ean c\u1ee9u v\u00e0 th\u0103m d\u00f2 v\u1ec1 t\u1ea1o v\u00e1n n\u1ee9a l\u00e0m s\u00e0n nh\u00e0, \u1ed1p t\u01b0\u1eddng c\u00f3 s\u1ef1 ph\u1ed1i h\u1ee3p gi\u1eefa tre v\u00e0 g\u1ed7 b\u00f3c \u0111\u00e3 \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh nh\u01b0: Nghi\u00ean c\u1ee9u s\u1ea3n xu\u1ea5t th\u1eed v\u00e1n lu\u1ed3ng Thanh Ho\u00e1 l\u00e0m s\u00e0n nh\u00e0 v\u00e0 chi ti\u1ebft gh\u1ebf (Tr\u1ea7n Thu\u1ef5 K\u1ef3); nghi\u00ean c\u1ee9u s\u1ea3n xu\u1ea5t th\u1eed v\u00e1n n\u1ee9a 2, 3 l\u1edbp, c\u00f3 l\u1edbp gi\u1eefa l\u00e0 g\u1ed7 \u0111\u1ec3 l\u00e0m s\u00e0n nh\u00e0, \u1ed1p t\u01b0\u1eddng v\u1edbi lo\u1ea1i keo UF + Lig-nhin (Nguy\u1ec5n V\u0103n Th\u1ed1ng); nghi\u00ean c\u1ee9u d\u00e1n th\u1eed n\u1ee9a \u0111\u00e3 \u0111\u01b0\u1ee3c b\u1ea3o qu\u1ea3n t\u1ea1o m\u1ea7u t\u1ef1 nhi\u00ean l\u00ean v\u00e1n d\u00e1n 4 l\u1edbp 6 ly b\u1eb1ng keo ch\u1ecbu \u1ea9m P.F ( Phenol – formandehyt ) \u0111\u1ec3 l\u00e0m v\u00e1n \u1ed1p t\u01b0\u1eddng k\u00edch th\u01b0\u1edbc = 400 x 900 x 9 (mm) (L\u00ea V\u0103n Thanh). C\u00e1c c\u00f4ng tr\u00ecnh tr\u00ean \u0111\u1ec1u t\u1ea1o ra \u0111\u01b0\u1ee3c nh\u1eefng s\u1ea3n ph\u1ea9m c\u00f3 s\u1ef1 ph\u1ed1i h\u1ee3p gi\u1eefa n\u1ee9a \u0111\u00e3 \u0111\u01b0\u1ee3c b\u1ea3o qu\u1ea3n + g\u1ed7 ho\u1eb7c g\u1ed7 b\u00f3c + keo d\u00e1n. Tuy nhi\u00ean, m\u1ed7i lo\u1ea1i v\u00e1n \u0111\u1ec1u b\u1ed9c l\u1ed9 m\u1ed9t s\u1ed1 nh\u01b0\u1ee3c \u0111i\u1ec3m ch\u01b0a th\u1ec3 tr\u1edf th\u00e0nh h\u00e0ng ho\u00e1 \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn tr\u00ean th\u1ecb tr\u01b0\u1eddng v\u00e0 c\u00e1c nghi\u00ean c\u1ee9u c\u0169ng ch\u01b0a \u0111\u1ec1 c\u1eadp t\u1edbi t\u00ednh ch\u1ea5t c\u01a1 l\u00fd v\u00e0 c\u00f4ng ngh\u1ec7 c\u1ee7a c\u00e1c lo\u1ea1i v\u00e1n \u0111\u00f3.<\/p>\n

Ti\u1ebfp thu v\u00e0 k\u1ebf th\u1eeba c\u00e1c k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u c\u1ee7a c\u00e1c t\u00e1c gi\u1ea3 thu\u1ed9c Vi\u1ec7n C\u00f4ng nghi\u1ec7p r\u1eebng \u0111\u00e3 l\u00e0m, ch\u00fang t\u00f4i x\u00e2y d\u1ef1ng \u0111\u1ec1 t\u00e0i: “Nghi\u00ean c\u1ee9u s\u1eed d\u1ee5ng v\u00e1n n\u1ee9a 3 l\u1edbp thay th\u1ebf v\u00e1n g\u1ed7 trong nh\u00e0 \u1edf c\u1ee7a nh\u00e2n d\u00e2n v\u00f9ng n\u00fai ph\u00eda B\u1eafc “<\/em><\/strong> nh\u1eb1m \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee5c ti\u00eau l\u00e0:<\/p>\n

+ T\u1ea1o ra lo\u1ea1i v\u00e1n n\u1ee9a k\u1ebft h\u1ee3p v\u1edbi v\u00e1n b\u00f3c, d\u00f9ng lo\u1ea1i keo kh\u00f4ng \u0111\u1ed9c UF, v\u00e1n c\u00f3 b\u1ea3o qu\u1ea3n t\u1ea1o m\u00e0u g\u1ea7n gi\u1ed1ng m\u00e0u t\u1ef1 nhi\u00ean c\u1ee7a n\u1ee9a \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi th\u1ecb hi\u1ebfu c\u1ee7a \u0111\u1ed3ng b\u00e0o d\u00e2n t\u1ed9c mi\u1ec1n n\u00fai.<\/p>\n

+ Nghi\u00ean c\u1ee9u k\u00edch th\u01b0\u1edbc v\u00e1n ph\u00f9 h\u1ee3p v\u1edbi k\u1ebft c\u1ea5u x\u00e2y d\u1ef1ng nh\u00e0 \u1edf c\u1ee7a \u0111\u1ed3ng b\u00e0o d\u00e2n t\u1ed9c theo ti\u00eau chu\u1ea9n nh\u00e0 \u1edf do B\u1ed9 X\u00e2y d\u1ef1ng m\u1edbi ban h\u00e0nh .<\/p>\n

I. Ph\u01b0\u01a1ng ph\u00e1p v\u00e0 n\u1ed9i dung nghi\u00ean c\u1ee9u<\/p>\n

1. Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u<\/strong><\/p>\n

+ L\u1ef1a ch\u1ecdn trong c\u00e1c nghi\u00ean c\u1ee9u tr\u01b0\u1edbc \u0111\u00e2y ph\u00f9 h\u1ee3p v\u1edbi m\u1ee5c ti\u00eau c\u1ee7a \u0111\u1ec1 t\u00e0i.<\/p>\n

+ D\u00f9ng th\u1ef1c nghi\u1ec7m \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u00e0 ki\u1ec3m tra t\u1ef7 l\u1ec7 keo, l\u01b0\u1ee3ng thu\u1ed1c b\u1ea3o qu\u1ea3n th\u00edch h\u1ee3p, lo\u1ea1i thu\u1ed1c v\u00e0 t\u1ef7 l\u1ec7 t\u1eadn d\u1ee5ng c\u1ee7a nguy\u00ean li\u1ec7u n\u1ee9a c\u00e2y.<\/p>\n

+ \u0110o l\u01b0\u1eddng m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t c\u01a1 l\u00fd v\u00e0 c\u00f4ng ngh\u1ec7 ch\u1ee7 y\u1ebfu c\u1ee7a v\u00e1n \u0111\u1ec3 ph\u00e2n t\u00edch, \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng \u1ee9ng d\u1ee5ng c\u1ee7a v\u00e1n tr\u00ean th\u1ecb tr\u01b0\u1eddng.<\/p>\n

2. N\u1ed9i dung nghi\u00ean c\u1ee9u<\/strong><\/p>\n

2.1- Thu th\u1eadp s\u1ed1 li\u1ec7u \u0111i\u1ec1u tra v\u1ec1 t\u00ecnh h\u00ecnh nguy\u00ean li\u1ec7u n\u1ee9a: s\u1ea3n l\u01b0\u1ee3ng, ch\u1ee7ng lo\u1ea1i, gi\u00e1 c\u1ea3 \u1edf m\u1ed9t s\u1ed1 v\u00f9ng t\u1eadp trung c\u00f3 r\u1eebng n\u1ee9a \u0111ang ph\u1ee5c h\u1ed3i.<\/p>\n

2.2- T\u00ecm hi\u1ec3u, thu th\u1eadp s\u1ed1 li\u1ec7u v\u1ec1 ki\u1ec3u k\u1ebft c\u1ea5u nh\u00e0 \u1edf, t\u1eadp qu\u00e1n trang tr\u00ed nh\u00e0 \u1edf c\u1ee7a m\u1ed9t s\u1ed1 d\u00e2n t\u1ed9c \u00edt ng\u01b0\u1eddi \u1edf v\u00f9ng n\u00fai ph\u00eda B\u1eafc v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n v\u1ec1 m\u1eabu nh\u00e0 \u1edf cho \u0111\u1ed3ng b\u00e0o d\u00e2n t\u1ed9c mi\u1ec1n n\u00fai ph\u00eda B\u1eafc do B\u1ed9 X\u00e2y d\u1ef1ng m\u1edbi ban h\u00e0nh.<\/p>\n

2.3- L\u1ef1a ch\u1ecdn c\u00f4ng ngh\u1ec7 v\u00e0 thi\u1ebft b\u1ecb th\u00edch h\u1ee3p cho vi\u1ec7c ch\u1ebf bi\u1ebfn v\u00e0 b\u1ea3o qu\u1ea3n nguy\u00ean li\u1ec7u n\u1ee9a, trong \u0111\u00f3 c\u00f3 vi\u1ec7c x\u00e1c \u0111\u1ecbnh t\u1ef7 l\u1ec7 thu\u1ed1c th\u00edch h\u1ee3p.<\/p>\n

2.4- Nghi\u00ean c\u1ee9u l\u1ef1a ch\u1ecdn c\u00f4ng ngh\u1ec7 v\u00e0 thi\u1ebft b\u1ecb th\u00edch h\u1ee3p cho vi\u1ec7c s\u1ea3n xu\u1ea5t c\u00e1c t\u1ea5m v\u00e1n n\u1ee9a 3 l\u1edbp, trong \u0111\u00f3 l\u1edbp gi\u1eefa l\u00e0 l\u1edbp v\u00e1n b\u00f3c d\u00e0y 2 -2,5mm c\u00f3 k\u00edch th\u01b0\u1edbc ph\u00f9 h\u1ee3p v\u1edbi s\u00e0n nh\u00e0 v\u00e0 v\u00e1ch ng\u0103n cho nh\u00e0 s\u00e0n, ho\u1eb7c nh\u00e0 n\u1ec1n \u0111\u1ea5t.<\/p>\n

2.5- \u0110o l\u01b0\u1eddng, x\u00e1c \u0111\u1ecbnh 4 t\u00ednh ch\u1ea5t c\u01a1 – l\u00fd ch\u1ee7 y\u1ebfu c\u1ee7a v\u00e1n l\u00e0: t\u1ef7 tr\u1ecdng, \u0111\u1ed9 tr\u01b0\u01a1ng n\u1edf theo chi\u1ec1u d\u00e0y, c\u01b0\u1eddng \u0111\u1ed9 u\u1ed1n t\u0129nh theo chi\u1ec1u d\u1ecdc, \u0111\u1ed9 b\u1ec1n k\u00e9o tr\u01b0\u1ee3t m\u00e0ng keo v\u00e0 2 t\u00ednh ch\u1ea5t c\u00f4ng ngh\u1ec7 l\u00e0: \u0111\u1ed9 b\u00e1m d\u00ednh theo chi\u1ec1u vu\u00f4ng g\u00f3c v\u1edbi m\u1eb7t v\u00e1n v\u00e0 \u0111\u1ed9 cong c\u1ee7a v\u00e1n.<\/p>\n

II. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u<\/p>\n

Qua 2 n\u0103m nghi\u00ean c\u1ee9u, th\u1ef1c nghi\u1ec7m v\u00e0 s\u1ea3n xu\u1ea5t th\u1eed s\u1ea3n ph\u1ea9m, k\u00e9t qu\u1ea3 \u0111\u1ec1 t\u00e0i \u0111\u00e3 \u0111\u1ea1t \u0111\u01b0\u1ee3c nh\u01b0 sau:<\/p>\n

1.T\u00ecnh h\u00ecnh nguy\u00ean li\u1ec7u n\u1ee9a \u1edf m\u1ed9t s\u1ed1 t\u1ec9nh mi\u1ec1n n\u00fai ph\u00eda B\u1eafc<\/strong><\/p>\n

\u0110\u1ec1 t\u00e0i \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c t\u00ean 2 lo\u1ea1i tre tr\u00fac ph\u1ed5 bi\u1ebfn \u1edf v\u00f9ng n\u00fai ph\u00eda B\u1eafc l\u00e0 n\u1ee9a l\u00e1 to (Neohouzeaudulloa<\/em> A Camus Var.lathfolia.NDH) v\u00e0 n\u1ee9a l\u00e1 nh\u1ecf (Neohouzeaudulloa<\/em> A Camus) v\u1edbi c\u00e1c th\u00f4ng s\u1ed1 ch\u00ednh nh\u01b0 \u1edf b\u1ea3ng 1, v\u00e0 gi\u00e1 b\u00e1n nh\u01b0 \u1edf b\u1ea3ng 2 v\u00e0 b\u1ea3ng 3.<\/p>\n

B\u1ea3ng 1. M\u1ed9t s\u1ed1 th\u00f4ng s\u1ed1 k\u00edch th\u01b0\u1edbc ch\u00ednh c\u1ee7a 2 lo\u00e0i n\u1ee9a ph\u1ed5 bi\u1ebfn \u1edf v\u00f9ng n\u00fai ph\u00eda B\u1eafc<\/em><\/strong><\/p>\n\n\n\n\n\n\n\n\n\n
N\u1ee9a l\u00e1 to<\/td>\nN\u1ee9a l\u00e1 nh\u1ecf<\/td>\n<\/tr>\n
V\u1ecb tr\u00ed \u0111o<\/td>\n\u0110\u01b0\u1eddng k\u00ednh (cm)<\/td>\nChi\u1ec1u d\u00e0i d\u00f3ng (cm)<\/td>\nB\u1ec1 d\u00e0y d\u00f3ng (mm)<\/td>\n\u0110\u01b0\u1eddng k\u00ednh (cm)<\/td>\nChi\u1ec1u d\u00e0i d\u00f3ng (cm)<\/td>\nB\u1ec1 d\u00e0y d\u00f3ng (mm)<\/td>\n<\/tr>\n
G\u1ed1c<\/td>\n6,9<\/td>\n26<\/td>\n6,0<\/td>\n4,6<\/td>\n31<\/td>\n5,0<\/td>\n<\/tr>\n
1m3 th\u00e2n <\/strong><\/td>\n8,3<\/td>\n54<\/td>\n5,0<\/td>\n5,0<\/td>\n49<\/td>\n3,0<\/td>\n<\/tr>\n
1\/3 th\u00e2n<\/td>\n8,0<\/td>\n63<\/td>\n4,0<\/td>\n4,5<\/td>\n44<\/td>\n2,5<\/td>\n<\/tr>\n
1\/2 th\u00e2n<\/td>\n7,8<\/td>\n54<\/td>\n3,5<\/td>\n4,3<\/td>\n33<\/td>\n2,0<\/td>\n<\/tr>\n
2\/3 th\u00e2n<\/td>\n6,5<\/td>\n38<\/td>\n3,0<\/td>\n3,0<\/td>\n27<\/td>\n1,5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

B\u1ea3ng 2. Gi\u00e1 b\u00e1n n\u1ee9a c\u00e2y t\u1ea1i B\u1eafc K\u1ea1n v\u00e0 H\u00e0 T\u00e2y<\/em><\/strong><\/p>\n\n\n\n\n\n
Lo\u1ea1i n\u1ee9a<\/td>\n\u0110\u01b0\u1eddng k\u00ednh (cm)<\/td>\nChi\u1ec1u d\u00e0i (cm)<\/td>\n\u0110\u1ecba \u0111i\u1ec3m giao h\u00e0ng<\/td>\n\u0110\u01a1n v\u1ecb<\/td>\nGi\u00e1 ti\u1ec1n (\u0111\u1ed3ng)<\/td>\n<\/tr>\n
L\u00e1 to<\/td>\n6 -9<\/td>\n7 -8<\/td>\nCh\u01b0\u01a1ng M\u1ef9 – H\u00e0 T\u00e2y<\/p>\n

Th\u1ecb x\u00e3 B\u1eafc K\u1ea1n<\/td>\n

c\u00e2y<\/p>\n

c\u00e2y<\/td>\n

2.500- 4.000<\/p>\n

1.200- 2.000<\/td>\n<\/tr>\n

L\u00e1 nh\u1ecf<\/td>\n3 -5,5<\/td>\n4 -4,5<\/td>\nCh\u01b0\u01a1ng M\u1ef9 – H\u00e0 T\u00e2y<\/p>\n

Th\u1ecb x\u00e3 B\u1eafc K\u1ea1n<\/td>\n

c\u00e2y<\/p>\n

c\u00e2y<\/td>\n

500-700<\/p>\n

200-300<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

B\u1ea3ng 3. Gi\u00e1 b\u00e1n n\u1ee9a thanh (n\u1ee9a l\u00e1 to) \u0111\u00e3 b\u1ecf m\u1eaft m\u1ea5u, ch\u1ebb thanh<\/em><\/strong><\/p>\n\n\n\n\n\n
TT<\/td>\nT\u00ean s\u1ea3n ph\u1ea9m<\/td>\n\u0110\u01a1n v\u1ecb t\u00ednh<\/td>\n\u0110\u1ecba \u0111i\u1ec3m giao h\u00e0ng<\/td>\nGi\u00e1 th\u00e0nh (\u0111\u1ed3ng)<\/td>\n<\/tr>\n
1<\/td>\nN\u1ee9a thanh b\u00f3<\/td>\nkg<\/td>\nCh\u1ee3 \u0110\u1ed3n-B\u1eafc K\u1ea1n<\/td>\n250<\/td>\n<\/tr>\n
2<\/td>\nN\u1ee9a thanh b\u00f3<\/td>\nkg<\/td>\nQu\u1ed1c Oai-H\u00e0 T\u00e2y<\/td>\n650-700<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Qua 2 b\u1ea3ng tr\u00ean ta th\u1ea5y gi\u00e1 n\u1ee9a chuy\u1ec3n v\u1ec1 \u0111\u1ebfn xu\u00f4i \u0111\u00e3 t\u0103ng l\u00ean t\u1eeb 2 \u0111\u1ebfn g\u1ea7n 3 l\u1ea7n so v\u1edbi n\u01a1i c\u00f3 n\u1ee9a.<\/p>\n

2. Kh\u00e1i qu\u00e1t v\u1ec1 nh\u00e0 \u1edf c\u1ee7a m\u1ed9t s\u1ed1 d\u00e2n t\u1ed9c \u1edf ph\u00eda B\u1eafc<\/strong><\/p>\n

C\u00e1c t\u1ec9nh mi\u1ec1n n\u00fai ph\u00eda B\u1eafc t\u1eeb Ninh B\u00ecnh tr\u1edf ra c\u00f3 kho\u1ea3ng 28 d\u00e2n t\u1ed9c \u00edt ng\u01b0\u1eddi sinh s\u1ed1ng, trong \u0111\u00f3 ng\u01b0\u1eddi T\u00e0y c\u00f3 tr\u00ean 1,2 tri\u1ec7u, ng\u01b0\u1eddi Th\u00e1i c\u00f3 tr\u00ean 1 tri\u1ec7u, ng\u01b0\u1eddi M\u01b0\u1eddng c\u00f3 914.600, ng\u01b0\u1eddi N\u00f9ng c\u00f3 tr\u00ean 706.000, ng\u01b0\u1eddi M\u00f4ng c\u00f3 558.000 v\u00e0 ng\u01b0\u1eddi Dao c\u00f3 tr\u00ean 600.000. Nh\u00e0 \u1edf c\u1ee7a h\u1ecd c\u00f3 th\u1ec3 chia l\u00e0m 2 lo\u1ea1i ch\u00ednh l\u00e0: nh\u00e0 s\u00e0n v\u00e0 nh\u00e0 n\u1ec1n \u0111\u1ea5t. Tu\u1ef3 theo t\u1eadp qu\u00e1n d\u00e2n t\u1ed9c m\u00e0 k\u00edch th\u01b0\u1edbc nh\u00e0, k\u1ebft c\u1ea5u nh\u00e0 kh\u00e1c nhau. Tuy nhi\u00ean, s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u \u0111\u1ec3 l\u00e0m v\u00e1ch ng\u0103n v\u00e0 l\u00e1t s\u00e0n \u1edf m\u1ed9t s\u1ed1 d\u00e2n t\u1ed9c \u0111\u1ec1u gi\u1ed1ng nhau c\u1ea3 v\u1ec1 k\u00edch th\u01b0\u1edbc v\u00e0 lo\u1ea1i v\u1eadt li\u1ec7u. Qua kh\u1ea3o s\u00e1t cho th\u1ea5y: S\u1ed1 gia \u0111\u00ecnh c\u00f3 nh\u00e0 s\u00e0n l\u1edbn ch\u1ec9 chi\u1ebfm kho\u1ea3ng 1-2%, c\u00f2n l\u1ea1i ch\u1ee7 y\u1ebfu l\u00e0 nh\u00e0 s\u00e0n nh\u1ecf v\u00e0 nh\u00e0 n\u1ec1n \u0111\u1ea5t th\u01b0ng v\u00e1ch b\u1eb1ng ph\u00ean n\u1ee9a, l\u1ee3p l\u00e1 c\u1ecd ho\u1eb7c tranh n\u1ee9a.<\/p>\n

B\u1ea3ng 4. K\u00edch th\u01b0\u1edbc v\u00e1n s\u00e0n g\u1ed7, s\u00e0n tre v\u00e0 v\u00e1ch ng\u0103n nh\u00e0<\/em><\/strong><\/p>\n\n\n\n\n\n\n
Lo\u1ea1i nh\u00e0<\/td>\nLo\u1ea1i v\u00e1n<\/td>\nK\u00edch th\u01b0\u1edbc v\u00e1n (cm)<\/td>\nDi\u1ec7n t\u00edch nh\u00e0(m2<\/sup>)<\/td>\n<\/tr>\n
D\u00e0i<\/td>\nR\u1ed9ng<\/td>\nD\u00e0y<\/td>\n<\/tr>\n
Nh\u00e0 s\u00e0n lo\u1ea1i l\u1edbn<\/td>\nV\u00e1n s\u00e0n g\u1ed7<\/p>\n

V\u00e1n th\u01b0ng xung quanh<\/p>\n

V\u00e1n ng\u0103n v\u00e1ch h\u1ed3i<\/td>\n

100-200<\/p>\n

50-60<\/p>\n

200-300<\/td>\n

20-30<\/p>\n

15-20<\/p>\n

20-30<\/td>\n

2,0-2,5<\/p>\n

1,5-2,0<\/p>\n

1,5-2,0<\/td>\n

60-120<\/td>\n<\/tr>\n
Nh\u00e0 s\u00e0n nh\u1ecf, nh\u00e0 n\u1ec1n \u0111\u1ea5t<\/td>\nV\u00e1n s\u00e0n g\u1ed7<\/p>\n

V\u00e1ch \u0111an n\u1ee9a<\/p>\n

S\u00e0n tre, di\u1ec5n b\u1ed5 phanh l\u00e1t tr\u00ean d\u1ea7m<\/td>\n

100-200<\/p>\n

180-240<\/p>\n

400-600<\/td>\n

20-30<\/p>\n

150-200<\/p>\n

15-25<\/td>\n

2,0-2,5<\/p>\n

0,5-0,6<\/p>\n

0,7-1,2<\/td>\n

30-50<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

3. C\u00f4ng ngh\u1ec7 v\u00e0 thi\u1ebft b\u1ecb ch\u1ebf bi\u1ebfn, b\u1ea3o qu\u1ea3n nguy\u00ean li\u1ec7u n\u1ee9a<\/strong><\/p>\n

\u0110\u1ec3 \u0111\u01a1n gi\u1ea3n v\u00e0 r\u1ebb ti\u1ec1n, c\u00f4ng ngh\u1ec7 b\u1ea3o qu\u1ea3n \u0111\u01b0\u1ee3c ch\u1ecdn l\u00e0 ng\u00e2m th\u01b0\u1eddng trong b\u1ec3 pha thu\u1ed1c v\u1edbi th\u1eddi gian ng\u00e2m l\u00e0 48 gi\u1edd, t\u1ef7 l\u1ec7 pha thu\u1ed1c BQ l\u00e0 5% v\u1edbi 2 c\u00f4ng th\u1ee9c thu\u1ed1c c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng r\u1eeda tr\u00f4i.<\/p>\n

+ Lo\u1ea1i c\u00f3 k\u00fd hi\u1ec7u CT1 v\u1edbi th\u00e0nh ph\u1ea7n ch\u00ednh l\u00e0 CuSO4<\/sub>.5H2<\/sub>O, thu\u1ed1c c\u00f3 m\u00e0u xanh s\u00e1ng tan trong n\u01b0\u1edbc.<\/p>\n

+ Lo\u1ea1i thu\u1ed1c c\u00f3 k\u00fd hi\u1ec7u CT2 v\u1edbi th\u00e0nh ph\u1ea7n ch\u1ee7 y\u1ebfu l\u00e0 Bicr\u00f4mat Natri v\u00e0 oxyt Cr\u00f4m Na2<\/sub>Cr2<\/sub>O7 <\/sub>+ CrO3<\/sub>,thu\u1ed1c c\u00f3 m\u00e0u v\u00e0ng r\u01a1m, tan trong n\u01b0\u1edbc.<\/p>\n

– Quy tr\u00ecnh pha thu\u1ed1c, ng\u00e2m nguy\u00ean li\u1ec7u tu\u00e2n th\u1ee7 theo s\u1ef1 khuy\u1ebfn c\u00e1o c\u1ee7a t\u1ed5 ch\u1ee9c INBAR v\u00e0 h\u01b0\u1edbng d\u1eabn c\u1ee7a Ph\u00f2ng B\u1ea3o qu\u1ea3n l\u00e2m s\u1ea3n – Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam.<\/p>\n

– L\u1ef1a ch\u1ecdn nguy\u00ean li\u1ec7u \u0111\u1ec3 l\u00e0m: Qua tham kh\u1ea3o k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u 6 lo\u00e0i Tre ph\u1ed5 bi\u1ebfn \u1edf \u0110\u00e0i Loan, x\u00e1c \u0111\u1ecbnh t\u00ednh ch\u1ea5t c\u01a1 v\u1eadt l\u00fd \u1edf c\u00e1c l\u1ee9a tu\u1ed5i t\u1eeb 2 – 6 n\u0103m, cho th\u1ea5y s\u1eed d\u1ee5ng tre \u1edf tu\u1ed5i >2 \u0111\u1ebfn d\u01b0\u1edbi 4 tu\u1ed5i l\u00e0 t\u1ed1t nh\u1ea5t, n\u00ean n\u1ee9a \u1edf tu\u1ed5i 2 – 3 \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn \u0111\u1ec3 th\u00ed nghi\u1ec7m.<\/p>\n

4. C\u00f4ng ngh\u1ec7 v\u00e0 thi\u1ebft b\u1ecb \u0111\u1ec3 s\u1ea3n xu\u1ea5t th\u1eed<\/strong><\/p>\n

K\u1ebf th\u1eeba c\u00f3 ch\u1ecdn l\u1ef1a c\u00e1c ph\u01b0\u01a1ng ph\u00e1p c\u00f4ng ngh\u1ec7 s\u1ea3n xu\u1ea5t th\u1eed v\u00e1n n\u1ee9a c\u1ee7a m\u1ed9t s\u1ed1 t\u00e1c gi\u1ea3 \u0111\u00e3 nghi\u00ean c\u1ee9u tr\u01b0\u01a1c \u0111\u00e2y, ch\u00fang t\u00f4i \u0111\u00e3 l\u1ef1a ch\u1ecdn c\u00e1c b\u01b0\u1edbc c\u00f4ng ngh\u1ec7 gia c\u00f4ng ch\u1ebf bi\u1ebfn n\u1ee9a sau khi \u0111\u00e3 ng\u00e2m thu\u1ed1c b\u1ea3o qu\u1ea3n nh\u01b0 sau:<\/p>\n

1. L\u00e0m m\u1ec1m v\u1eadt li\u1ec7u n\u1ee9a b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gia nhi\u1ec7t – \u1ea9m, d\u1ee5ng c\u1ee5 d\u00f9ng trong qu\u00e1 tr\u00ecnh n\u00e0y l\u00e0 n\u1ed3i h\u1ea5p, \u0111\u1ed1t b\u1eb1ng b\u1ebfp than.<\/p>\n

2. C\u00e1n cho ph\u1eb3ng thanh n\u1ee9a b\u1eb1ng m\u00e1y c\u00e1n qua 2 l\u1ea7n li\u00ean ti\u1ebfp: L\u1ea7n 1 b\u1eb1ng m\u00e1y c\u00e1n quay tay; l\u1ea7n 2 b\u1eb1ng m\u00e1y c\u00e1n ch\u1ea1y \u0111i\u1ec7n.<\/p>\n

3. B\u00e0o ru\u1ed9t thanh n\u1ee9a \u0111\u1ec3 l\u00e0m ph\u1eb3ng b\u1ec1 m\u1eb7t trong v\u00e0 t\u1ea1o ra chi\u1ec1u d\u00e0y \u0111\u1ed3ng \u0111\u1ec1u b\u1eb1ng m\u00e1y b\u00e0o cu\u1ed1n m\u1ed9t m\u1eb7t c\u00f3 l\u00f2 xo \u00e9p.<\/p>\n

4. Th\u1ea9m th\u1eb3ng 2 c\u1ea1nh thanh n\u1ee9a \u0111\u1ec3 gh\u00e9p b\u1eb1ng b\u00e0o th\u1ea9m c\u00f3 d\u01b0\u1ee1ng k\u1eb9p chuy\u00ean d\u00f9ng.<\/p>\n

5.Tr\u00e1ng keo v\u00e1n ru\u1ed9t – v\u00e1n b\u00f3c d\u00e0y 2- 2,5 mm \u0111\u01b0\u1ee3c s\u1ea5y kh\u00f4 \u0111\u1ebfn \u0111\u1ed9 \u1ea9m 8-10% r\u1ed3i tr\u00e1ng keo – d\u00f9ng m\u00e1y tr\u00e1ng keo 2 m\u1eb7t (m\u00e1y tr\u00e1ng rul\u00f4), lo\u1ea1i keo \u0111\u01b0\u1ee3c d\u00f9ng l\u00e0 UF c\u1ee7a H\u00e3ng DINO c\u00f3 m\u00e3 hi\u1ec7u WG -2111 (keo l\u1ecfng pha s\u1eb5n).<\/p>\n

6. S\u1eafp x\u1ebfp v\u00e1n \u0111\u1ec3 \u00e9p tr\u00ean m\u00e1y \u00e9p thu\u1ef7 l\u1ef1c gia nhi\u1ec7t b\u1eb1ng \u0111i\u1ec7n v\u1edbi \u00e1p l\u1ef1c = 15kg\/cm2<\/sup>, nhi\u1ec7t \u0111\u1ed9 \u00e9p = 100-1200<\/sup>C, th\u1eddi gian gi\u1eef \u00e1p l\u1ef1c = 10-18 ph\u00fat \u1ee9ng v\u1edbi c\u00e1c chi\u1ec1u d\u00e0y v\u00e1n t\u1eeb 7-12 mm.<\/p>\n

7. X\u00e9n c\u1ea1nh v\u00e1n – d\u00f9ng c\u01b0a \u0111\u1ea9y b\u00e0n c\u00f3 t\u1ed1c \u0111\u1ed9 cao n = 3000 v\u00f2ng\/ ph\u00fat \u0111\u1ec3 t\u1ea1o m\u1ea1ch nh\u1eb5n (v\u00ec v\u00e1n n\u1ee9a c\u1ee9ng h\u01a1n v\u00e1n g\u1ed7 ).<\/p>\n

5. \u0110o l\u01b0\u1eddng x\u00e1c \u0111\u1ecbnh 4 t\u00ednh ch\u1ea5t c\u01a1 l\u00fd ch\u1ee7 y\u1ebfu v\u00e0 2 t\u00ednh ch\u1ea5t c\u00f4ng ngh\u1ec7<\/strong><\/p>\n

M\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t c\u01a1 l\u00fd v\u00e0 c\u00f4ng ngh\u1ec7 c\u1ee7a v\u1eadt li\u1ec7u \u0111\u1ec3 l\u00e0m s\u00e0n nh\u00e0 v\u00e0 v\u00e1ch ng\u0103n c\u1ea7n \u0111\u01b0\u1ee3c x\u00e9t \u0111\u1ebfn l\u00e0: Kh\u1ed1i l\u01b0\u1ee3ng th\u1ec3 t\u00edch c\u1ee7a v\u00e1n, l\u1ef1c u\u1ed1n t\u0129nh theo chi\u1ec1u d\u1ecdc th\u1edb c\u1ee7a v\u00e1n, \u0111\u1ed9 tr\u01b0\u01a1ng n\u1edf theo chi\u1ec1u d\u00e0y khi ng\u00e2m n\u01b0\u1edbc l\u1ea1nh trong 24h, \u0111\u1ed9 b\u1ec1n k\u00e9o tr\u01b0\u1ee3t m\u00e0ng keo theo chi\u1ec1u d\u1ecdc th\u1edb, \u0111\u1ed9 mo cong c\u1ee7a v\u00e1n, l\u1ef1c b\u00e1m d\u00ednh theo chi\u1ec1u vu\u00f4ng g\u00f3c v\u1edbi b\u1ec1 m\u1eb7t v\u00e1n.<\/p>\n

K\u1ebft qu\u1ea3 ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m c\u00e1c t\u00ednh ch\u1ea5t c\u1ee7a v\u00e1n \u0111\u01b0\u1ee3c ghi \u1edf b\u1ea3ng 5.<\/p>\n

B\u1ea3ng 5. C\u00e1c t\u00ednh ch\u1ea5t c\u01a1 l\u00fd v\u00e0 c\u00f4ng ngh\u1ec7 c\u1ee7a v\u00e1n n\u1ee9a<\/em><\/strong><\/p>\n\n\n\n\n\n\n\n\n\n
TT<\/strong><\/td>\nLo\u1ea1i t\u00ednh ch\u1ea5t<\/strong><\/td>\n\u0110\u01a1n v\u1ecb \u0111o<\/strong><\/td>\nGi\u00e1 tr\u1ecb trung b\u00ecnh<\/strong><\/td>\n<\/tr>\n
1<\/td>\nKh\u1ed1i l\u01b0\u1ee3ng th\u1ec3 t\u00edch<\/td>\ng\/cm3<\/sup><\/td>\n0,717<\/td>\n<\/tr>\n
2<\/td>\nT\u1ef7 l\u1ec7 tr\u01b0\u01a1ng n\u1edf theo chi\u1ec1u d\u00e0y v\u00e1n<\/td>\n%<\/td>\n5,330<\/td>\n<\/tr>\n
3<\/td>\nC\u01b0\u1eddng \u0111\u1ecd u\u1ed1n t\u0129nh theo d\u1ecdc th\u1edb<\/td>\nkg\/cm2<\/sup><\/td>\n810,270<\/td>\n<\/tr>\n
4<\/td>\nC\u01b0\u1eddng \u0111\u1ed9 k\u00e9o tr\u01b0\u1ee3t m\u00e0ng keo<\/td>\nkg\/cm2<\/sup><\/td>\n26,810<\/td>\n<\/tr>\n
5<\/td>\n\u0110\u1ed9 mo cong c\u1ee7a v\u00e1n<\/td>\n%<\/td>\n0,520<\/td>\n<\/tr>\n
6<\/td>\n\u0110\u1ed9 b\u1ec1n b\u00e1m d\u00ednh theo chi\u1ec1u vu\u00f4ng g\u00f3c<\/td>\nkg\/cm2<\/sup><\/td>\n69,010<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

III. Th\u1ea3o lu\u1eadn v\u00e0 k\u1ebft lu\u1eadn<\/p>\n

Trong qu\u00e1 tr\u00ecnh th\u1ef1c hi\u1ec7n \u0111\u1ec1 t\u00e0i, 3 lo\u1ea1i v\u00e1n n\u1ee9a \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t th\u1eed c\u00f3 k\u00edch th\u01b0\u1edbc nh\u01b0 sau ( r\u1ed9ng x d\u00e0i x d\u00e0y): 1- V\u00e1n \u1ed1p t\u01b0\u1eddng 400 x 900 x 7 (mm); 2- V\u00e1n th\u01b0ng v\u00e1ch 900 x 900 x 10 (mm); 3- V\u00e1n l\u00e1t s\u00e0n nh\u00e0 400 x 900 x12 (mm).<\/p>\n

V\u00ec s\u1ed1 l\u01b0\u1ee3ng s\u1ea3n xu\u1ea5t th\u1eed ch\u01b0a nhi\u1ec1u n\u00ean vi\u1ec7c x\u00e1c \u0111\u1ecbnh gi\u00e1 th\u00e0nh v\u00e1n ch\u01b0a \u0111\u1ee7 \u0111\u1ed9 tin c\u1eady \u0111\u1ec3 c\u00f4ng b\u1ed1. Tuy nhi\u00ean, ch\u00fang t\u00f4i c\u00f3 th\u1ec3 s\u01a1 b\u1ed9 nh\u1eadn \u0111\u1ecbnh nh\u01b0 sau:<\/p>\n

1- V\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng v\u00e1n<\/em><\/strong>: V\u00e1n n\u1ee9a 3 l\u1edbp c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng th\u1ec3 t\u00edch trung b\u00ecnh, c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 l\u00fd kh\u00e1c nh\u01b0 tr\u01b0\u01a1ng n\u1edf theo chi\u1ec1u t\u1ed1t h\u01a1n c\u00e1c lo\u1ea1i v\u00e1n nh\u00e2n t\u1ea1o kh\u00e1c (v\u00e1n d\u0103m, v\u00e1n d\u00e1n nh\u1eadp t\u1eeb Malaysia). C\u01b0\u1eddng \u0111\u1ed9 u\u1ed1n t\u0129nh theo chi\u1ec1u d\u1ecdc th\u1edb t\u01b0\u01a1ng \u0111\u01b0\u01a1ng g\u1ed7 nh\u00f3m III, IV; c\u00e1c t\u00ednh ch\u1ea5t kh\u00e1c c\u0169ng \u0111\u1ea3m b\u1ea3o c\u00f3 th\u1ec3 l\u00e0m v\u1eadt li\u1ec7u thay th\u1ebf v\u00e1n g\u1ed7 trong nh\u00e0 \u1edf cho nh\u00e2n d\u00e2n v\u00f9ng n\u00fai ph\u00eda B\u1eafc n\u01b0\u1edbc ta.<\/p>\n

2- V\u1ec1 h\u00ecnh th\u1ee9c<\/em><\/strong>: V\u00e1n c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m t\u1ef1 nhi\u00ean, m\u1eb7t ngo\u00e0i \u0111\u1ec3 nguy\u00ean tinh n\u1ee9a v\u00e0 c\u00f3 t\u1ea1o m\u00e0u gi\u1ed1ng m\u00e0u n\u1ee9a t\u1ef1 nhi\u00ean do thu\u1ed1c b\u1ea3o qu\u1ea3n v\u00e0 m\u00e0u kh\u00f4ng b\u1ecb phai nh\u1ea1t n\u1ebfu d\u00f9ng trong nh\u00e0 n\u00ean c\u00f3 t\u00ednh th\u1ea9m m\u0129, ph\u00f9 h\u1ee3p v\u1edbi thi\u00ean nhi\u00ean xung quanh (k\u1ec3 c\u1ea3 s\u00e0n nh\u00e0, nh\u00e0 n\u1ec1n \u0111\u1ea5t).<\/p>\n

3- V\u1ec1 gi\u00e1 th\u00e0nh<\/em><\/strong>: n\u1ebfu t\u1ed5 ch\u1ee9c s\u1ea3n xu\u1ea5t ki\u1ec3u c\u00f4ng nghi\u1ec7p t\u1ea1i v\u00f9ng n\u00fai n\u01a1i g\u1ea7n ngu\u1ed3n nguy\u00ean li\u1ec7u nh\u01b0 \u1edf Th\u1ecb x\u00e3 B\u1eafc K\u1ea1n ; huy\u1ec7n L\u01b0\u01a1ng S\u01a1n – t\u1ec9nh Ho\u00e0 B\u00ecnh ; huy\u1ec7n Chi\u00eam Ho\u00e1 – Tuy\u00ean Quang,… th\u00ec gi\u00e1 th\u00e0nh t\u01b0\u01a1ng \u0111\u01b0\u01a1ng g\u1ed7 nh\u00f3m V (v\u00e1n g\u1ed7 lo\u1ea1i d\u00e0y 1,5 – 2,0 cm) kho\u1ea3ng 23.000-24.000 \u0111\/m2<\/sup> th\u00e0nh ph\u1ea9m lo\u1ea1i d\u00e0y 1,2cm.<\/p>\n

4- V\u1ec1 thi\u1ebft b\u1ecb v\u00e0 c\u00f4ng ngh\u1ec7 \u0111\u1ec3 s\u1ea3n xu\u1ea5t:<\/em><\/strong><\/p>\n

– C\u00f4ng ngh\u1ec7 kh\u00e1 \u0111\u01a1n gi\u1ea3n v\u00e0 c\u00f3 th\u1ec3 c\u01a1 gi\u1edbi ho\u00e1 t\u1eebng ph\u1ea7n vi\u1ec7c trong qu\u00e1 tr\u00ecnh gia c\u00f4ng ch\u1ebf bi\u1ebfn t\u1eeb nguy\u00ean li\u1ec7u t\u01b0\u01a1i \u0111\u1ebfn s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng l\u00e0 v\u00e1n 3 l\u1edbp.<\/p>\n

– Thi\u1ebft b\u1ecb \u0111\u01a1n gi\u1ea3n c\u00f3 th\u1ec3 ch\u1ebf t\u1ea1o trong n\u01b0\u1edbc v\u1edbi gi\u00e1 th\u00e0nh r\u1ebb, kh\u1ea5u hao nhanh.<\/p>\n

D\u00e2y chuy\u1ec1n c\u00f4ng ngh\u1ec7 t\u00f3m t\u1eaft nh\u01b0 sau:<\/em><\/p>\n

+ N\u1ee9a c\u00e2y C\u1eaft kh\u00fac Ng\u00e2m thu\u1ed1c BG T\u1ea1o thanh<\/p>\n

\u00e9p n\u00f3ng<\/p>\n

+ G\u1ed7 tr\u00f2n B\u00f3c v\u00e1n m\u1ecfng S\u1ea5y Tr\u00e1ng keo<\/p>\n

X\u00e9n<\/p>\n

Sp v\u00e1n n\u1ee9a<\/p>\n

Thi\u1ebft b\u1ecb cho d\u00e2y chuy\u1ec1n tr\u00ean g\u1ed3m:<\/p>\n

1- Ch\u1ebf bi\u1ebfn n\u1ee9a t\u01b0\u01a1i v\u00e0 b\u1ea3o qu\u1ea3n: c\u01b0a tay, dao ch\u1ebb, b\u1ec3 ng\u00e2m t\u1ea9m.<\/p>\n

2- Ch\u1ebf bi\u1ebfn n\u1ee9a thanh: n\u1ed3i h\u1ea5p, m\u00e1y c\u00e1n ph\u1eb3ng, m\u00e1y b\u00e0o ru\u1ed9t (b\u00e0o cu\u1ed1n), m\u00e1y b\u00e0o th\u1ea9m m\u00e9p (c\u00f3 d\u01b0\u1ee1ng chuy\u00ean d\u00f9ng).<\/p>\n

3- T\u1ea1o v\u00e1n: l\u00f2 s\u1ea5y v\u00e1n b\u00f3c, m\u00e1y tr\u00e1ng keo, m\u00e1y \u00e9p thu\u1ef7 l\u1ef1c, m\u00e1y c\u01b0a x\u00e9n c\u1ea1nh v\u00e1n t\u1ea1o s\u1ea3n ph\u1ea9m theo k\u00edch th\u01b0\u1edbc y\u00eau c\u1ea7u.<\/p>\n

2. K\u1ebft lu\u1eadn <\/strong><\/p>\n

V\u00e1n n\u1ee9a 3 l\u1edbp s\u1ea3n xu\u1ea5t theo c\u00f4ng ngh\u1ec7 v\u00e0 thi\u1ebft b\u1ecb m\u00e0 \u0111\u1ec1 ta\u00ec \u0111\u00e3 ch\u1ecdn l\u1ef1a nh\u01b0 tr\u00ean ho\u00e0n to\u00e0n \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c c\u00e1c y\u00eau c\u1ea7u \u0111\u1ec3 thay th\u1ebf v\u00e1n g\u1ed7 trong nh\u00e0 \u1edf c\u1ee7a nh\u00e2n d\u00e2n v\u00f9ng n\u00fai ph\u00eda B\u1eafc v\u00ec n\u00f3 c\u00f3 c\u00e1c \u01b0u \u0111i\u1ec3m sau:<\/p>\n

– \u0110\u1ed9 b\u1ec1n c\u01a1 l\u00fd, \u0111\u1ed9 b\u1ec1n l\u00e2u t\u01b0\u01a1ng \u0111\u01b0\u01a1ng g\u1ed7 nh\u00f3m V hi\u1ec7n nay.<\/p>\n

– C\u00f3 th\u1ec3 t\u1ea1o m\u00e0u s\u1eafc b\u1ec1 ngo\u00e0i v\u00e1n g\u1ea7n v\u1edbi m\u00e0u t\u1ef1 nhi\u00ean c\u1ee7a n\u1ee9a v\u00e0 gi\u1eef m\u00e0u l\u00e2u h\u01a1n ch\u1ea5t ph\u1ee7 th\u01b0\u1eddng nh\u01b0 s\u01a1n, ph\u00f9 h\u1ee3p v\u1edbi t\u1eadp qu\u00e1n c\u1ee7a m\u1ed9t s\u1ed1 d\u00e2n t\u1ed9c th\u00edch gi\u1ea3n d\u1ecb, m\u1ed9c m\u1ea1c nh\u01b0 c\u00e2y r\u1eebng.<\/p>\n

– C\u00f3 th\u1ec3 t\u1ed5 ch\u1ee9c s\u1ea3n xu\u1ea5t c\u00f4ng nghi\u1ec7p \u1edf mi\u1ec1n n\u00fai \u0111\u1ec3 t\u1ea1o v\u1eadt li\u1ec7u t\u1ea1i ch\u1ed7, gi\u1ea3m b\u1edbt vi\u1ec7c ch\u1eb7t ph\u00e1 r\u1eebng g\u1ed7 t\u1ef1 nhi\u00ean \u0111\u1ec3 l\u00e0m nh\u00e0 nh\u01b0 hi\u1ec7n nay.<\/p>\n

Tuy nhi\u00ean, \u0111\u1ec3 \u0111\u01b0a \u0111\u01b0\u1ee3c v\u00e0o s\u1ea3n xu\u1ea5t c\u1ea7n ph\u1ea3i ti\u1ebfp t\u1ee5c nghi\u00ean c\u1ee9u gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 khuy\u1ebfn kh\u00edch d\u00f9ng v\u1eadt li\u1ec7u m\u1edbi v\u00e0 h\u1ed7 tr\u1ee3 \u0111\u01a1n v\u1ecb s\u1ea3n xu\u1ea5t lo\u1ea1i v\u1eadt li\u1ec7u n\u00e0y.<\/p>\n

Summary: <\/em><\/strong>As a result, the research has selected a type of equipment line and technology suitable for production of 3- layered bamboo mat of 7, 10 and 12mm in thickness used wall surface, house partition wall and floor as substitute for wooden board and ordinary bamboo mat in households of people in mountainous regions in North Vietnam.<\/p>\n

T\u00e0i li\u1ec7u tham kh\u1ea3o <\/u><\/h2>\n

1. Nguy\u1ec5n T\u1eed \u01af\u1edfng. T\u00e0i nguy\u00ean Tre v\u00e0 Song m\u00e2y \u1edf Vi\u1ec7t Nam – B\u00e1o c\u00e1o k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u khoa h\u1ecdc giai \u0111o\u1ea1n 1991 -1995.<\/p>\n

2. Nguy\u1ec5n \u0110\u00ecnh H\u01b0ng. Nghi\u00ean c\u1ee9u ph\u00e2n lo\u1ea1i g\u1ed7 Vi\u1ec7t Nam, k\u1ef7 y\u1ebfu – B\u00e1o c\u00e1o khoa h\u1ecdc c\u1ee7a Vi\u1ec7n C\u00f4ng nghi\u1ec7p r\u1eebng giai \u0111o\u1ea1n 1982 -1993.<\/p>\n

3. Vi\u1ec7n \u0111i\u1ec1u tra quy ho\u1ea1ch r\u1eebng. K\u1ebft qu\u1ea3 \u0111i\u1ec1u tra r\u1eebng \u1edf c\u00e1c t\u1ec9nh ph\u00eda B\u1eafc : B\u1eafc Th\u00e1i, Cao B\u1eb1ng, Ho\u00e0ng Li\u00ean S\u01a1n, S\u01a1n La, H\u00e0 Tuy\u00ean, V\u0129nh Ph\u00fa (1983).<\/p>\n

4. L\u00ea V\u0103n Thanh v\u00e0 Tri\u1ec7u H\u1ed3ng Ph\u00fa. Nghi\u00ean c\u1ee9u c\u00f4ng ngh\u1ec7 v\u00e0 tuy\u1ec3n ch\u1ecdn thi\u1ebft b\u1ecb \u0111\u1ec3 s\u1ea3n xu\u1ea5t v\u00e1n \u1ed1p t\u01b0\u1eddng, v\u00e1n s\u00e0n, trang tr\u00ed n\u1ed9i th\u1ea5t b\u1eb1ng tre n\u1ee9a – K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u KH 1986 – 1992, Vi\u1ec7n KHLN Vi\u1ec7t Nam – NXB N\u00f4ng nghi\u1ec7p 1993.<\/p>\n

(*Trung t\u00e2m c\u00f4ng nghi\u1ec7p r\u1eebng; ** Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p)<\/p>\n","protected":false},"excerpt":{"rendered":"

Tre, n\u1ee9a là các loài cây sinh tr\u01b0\u1edfng và phát tri\u1ec3n nhanh và \u0111\u1eb7c bi\u1ec7t g\u1eafn bó v\u1edbi nhân dân ta t\u1eeb x\u01b0a t\u1edbi nay vì nó cung c\u1ea5p ch\u1ea5t \u0111\u1ed1t, v\u1eadt li\u1ec7u làm nhà, d\u1ee5ng c\u1ee5 ph\u1ee5c v\u1ee5 sinh ho\u1ea1t, công c\u1ee5 s\u1ea3n xu\u1ea5t, ph\u01b0\u01a1ng ti\u1ec7n ho\u1ea1t \u0111\u1ed9ng v\u0103n hoá,… \u1edf mi\u1ec1n núi, h\u1ea7u nh\u01b0 t\u1ea5t c\u1ea3 m\u1ecdi sinh ho\u1ea1t kinh t\u1ebf, v\u0103n hoá, \u0111\u1eddi s\u1ed1ng \u0111\u1ec1u có m\u1eb7t c\u1ee7a cây n\u1ee9a. V\u1edbi ý t\u01b0\u1edfng tìm ki\u1ebfm m\u1ed9t lo\u1ea1i v\u1eadt li\u1ec7u t\u1eeb tre, n\u1ee9a \u0111\u1ec3 thay th\u1ebf g\u1ed7 nh\u01b0ng r\u1ebb h\u01a1n g\u1ed7 và có th\u1ec3 s\u1ea3n xu\u1ea5t công nghi\u1ec7p, dùng làm v\u1eadt li\u1ec7u trong nhà \u1edf cho nhân dân vùng núi, m\u1ed9t s\u1ed1 nghiên c\u1ee9u và th\u0103m dò v\u1ec1 t\u1ea1o ván n\u1ee9a làm sàn nhà, \u1ed1p t\u01b0\u1eddng có s\u1ef1 ph\u1ed1i h\u1ee3p gi\u1eefa tre và g\u1ed7 bóc \u0111ã \u0111\u01b0\u1ee3c ti\u1ebfn hành nh\u01b0: …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[18],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8603"}],"collection":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/comments?post=8603"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8603\/revisions"}],"predecessor-version":[{"id":19298,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8603\/revisions\/19298"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=8603"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=8603"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=8603"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}