{"id":8604,"date":"2009-03-24T02:26:06","date_gmt":"2009-03-23T19:26:06","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2009\/03\/ky-thuat-xu-ly-bao-quan-tre-theo-phuong-phap-thay-the-nhua\/"},"modified":"2019-09-25T10:13:42","modified_gmt":"2019-09-25T03:13:42","slug":"ky-thuat-xu-ly-bao-quan-tre-theo-phuong-phap-thay-the-nhua","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/ky-thuat-xu-ly-bao-quan-tre-theo-phuong-phap-thay-the-nhua\/","title":{"rendered":"K\u1ef9 thu\u1eadt x\u1eed l\u00fd b\u1ea3o qu\u1ea3n tre theo ph\u01b0\u01a1ng ph\u00e1p thay th\u1ebf nh\u1ef1a"},"content":{"rendered":"

Nguy\u1ec5n Th\u1ecb B\u00edch ng\u1ecdc<\/em><\/strong><\/p>\n

Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/em><\/p>\n

\u1edf Vi\u1ec7t Nam, tre l\u00e0 ngu\u1ed3n t\u00e0i nguy\u00ean phong ph\u00fa, ph\u00e2n b\u1ed1 r\u1ed9ng r\u00e3i \u1edf nhi\u1ec1u v\u00f9ng trong c\u1ea3 n\u01b0\u1edbc. Nhu c\u1ea7u v\u1ec1 tre l\u00e0m nh\u00e0 c\u1eeda t\u1ea1i c\u00e1c v\u00f9ng n\u00f4ng th\u00f4n n\u01b0\u1edbc ta r\u1ea5t l\u1edbn. Nguy\u00ean li\u1ec7u tre \u0111\u1ec3 x\u00e2y d\u1ef1ng nh\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf hai d\u1ea1ng ch\u00ednh: D\u1ea1ng nguy\u00ean \u1ed1ng l\u00e0m c\u00e1c b\u1ed9 ph\u1eadn ch\u1ecbu l\u1ef1c nh\u01b0 c\u00e1c lo\u1ea1i x\u00e0, c\u1ed9t; D\u1ea1ng ch\u1ebb thanh \u0111\u1ec3 l\u00e0m gi\u00e0n m\u00e1i, v\u00e1ch ng\u0103n che, s\u00e0n nh\u00e0 v\u00e0 c\u00e1c chi ti\u1ebft nh\u1ecf kh\u00e1c. Tre tr\u01b0\u1edbc khi \u0111\u01b0a v\u00e0o s\u1eed d\u1ee5ng h\u1ea7u nh\u01b0 kh\u00f4ng \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1ea3o qu\u1ea3n b\u1eb1ng ho\u00e1 ch\u1ea5t; n\u1ebfu c\u00e1c gia \u0111\u00ecnh kh\u00f4ng g\u1ea7n ngu\u1ed3n n\u01b0\u1edbc \u0111\u1ec3 ng\u00e2m tre th\u00ec th\u01b0\u1eddng ch\u1ec9 ph\u01a1i kh\u00f4 tre. M\u1ed9t ng\u00f4i nh\u00e0 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng nh\u01b0 v\u1eady ch\u1ec9 sau 2-3 n\u0103m l\u1ea1i ph\u1ea3i s\u1eeda ch\u1eefa, thay th\u1ebf do b\u1ecb sinh v\u1eadt ph\u00e1 hu\u1ef7, g\u00e2y kh\u00f3 kh\u0103n v\u1ec1 t\u00e0i ch\u00ednh cho ng\u01b0\u1eddi d\u00e2n v\u00e0 l\u00e3ng ph\u00ed t\u00e0i nguy\u00ean. Xu\u1ea5t ph\u00e1t t\u1eeb th\u1ef1c t\u1ebf tr\u00ean, \u0111\u00f2i h\u1ecfi c\u00f3 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o qu\u1ea3n tre b\u1eb1ng ho\u00e1 ch\u1ea5t v\u1edbi y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt v\u00e0 trang thi\u1ebft b\u1ecb \u0111\u01a1n gi\u1ea3n, \u0111\u1ec3 c\u00e1c h\u1ed9 d\u00e2n d\u1ec5 \u00e1p d\u1ee5ng. \u0110\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u tr\u00ean, s\u1ebd g\u00f3p ph\u1ea7n ti\u1ebft ki\u1ec7m m\u1ed9t l\u01b0\u1ee3ng tre l\u1edbn ti\u00eau th\u1ee5 h\u00e0ng n\u0103m d\u00f9ng trong x\u00e2y d\u1ef1ng.<\/p>\n

B\u1ea3o qu\u1ea3n tre b\u1eb1ng ho\u00e1 ch\u1ea5t \u0111\u00e3 \u0111\u01b0\u1ee3c Ph\u00f2ng Nghi\u00ean c\u1ee9u B\u1ea3o qu\u1ea3n l\u00e2m s\u1ea3n quan t\u00e2m nghi\u00ean c\u1ee9u. \u0110\u1ec3 b\u1ea3o qu\u1ea3n tre c\u00f2n t\u01b0\u01a1i, ph\u01b0\u01a1ng ph\u00e1p t\u1ea9m thay th\u1ebf nh\u1ef1a \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea3i ti\u1ebfn ph\u00f9 h\u1ee3p v\u1edbi c\u1ea5u t\u1ea1o tre. C\u00e1c gi\u1ea3i ph\u00e1p k\u1ef9 thu\u1eadt \u0111\u1eb7t ra nh\u1eb1m l\u1ee3i d\u1ee5ng \u0111\u1ed9 r\u1ed7ng c\u1ee7a l\u00f3ng tre ch\u1ee9a dung d\u1ecbch thu\u1ed1c b\u1ea3o qu\u1ea3n, thu\u1ed1c t\u1ef1 th\u1ea5m v\u00e0o tre m\u00e0 kh\u00f4ng y\u00eau c\u1ea7u b\u1ea5t k\u1ef3 trang thi\u1ebft b\u1ecb k\u00e8m theo. \u0110i\u1ec1u ki\u1ec7n quan tr\u1ecdng \u0111\u1ec3 t\u1ea9m tre c\u00f3 hi\u1ec7u qu\u1ea3 l\u00e0 \u0111\u1ed9 \u1ea9m tre cao. C\u00e1c c\u00f4ng tr\u00ecnh nghi\u00ean c\u1ee9u tr\u01b0\u1edbc m\u1edbi \u0111\u1ec1 c\u1eadp v\u1ec1 kh\u1ea3 n\u0103ng th\u1ea5m thu\u1ed1c c\u1ee7a tre ngay sau ch\u1eb7t h\u1ea1 t\u1eeb 1- 2 ng\u00e0y. V\u1ea5n \u0111\u1ec1 c\u1ea7n ti\u1ebfp t\u1ee5c gi\u1ea3i quy\u1ebft l\u00e0 nghi\u00ean c\u1ee9u \u1ea3nh h\u01b0\u1edfng c\u1ee7a \u0111\u1ed9 d\u00e0i tre t\u1ea9m \u0111\u1ebfn kh\u1ea3 n\u0103ng th\u1ea5m thu\u1ed1c b\u1ea3o qu\u1ea3n v\u00e0 x\u00e1c \u0111\u1ecbnh ng\u01b0\u1ee1ng \u0111\u1ed9 \u1ea9m tre c\u1ea7n thi\u1ebft \u0111\u1ec3 t\u1ea9m tre \u0111\u1ea1t hi\u1ec7u qu\u1ea3. K\u1ebft qu\u1ea3 \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ebd g\u00f3p ph\u1ea7n ho\u00e0n thi\u1ec7n k\u1ef9 thu\u1eadt x\u1eed l\u00fd b\u1ea3o qu\u1ea3n tre \u0111\u01a1n gi\u1ea3n n\u00e0y.<\/p>\n

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

1. Nguy\u00ean li\u1ec7u th\u00ed nghi\u1ec7m<\/strong><\/p>\n

-Tre lu\u1ed3ng ( Dendrocalamus membranaceus<\/em> Munro )<\/p>\n

-Tre gai ( Bambusa stenostachys<\/em> Hack)<\/p>\n

-Thu\u1ed1c b\u1ea3o qu\u1ea3n XM5, n\u1ed3ng \u0111\u1ed9 s\u1eed d\u1ee5ng 7%<\/p>\n

2. Ph\u01b0\u01a1ng ph\u00e1p ti\u1ebfn h\u00e0nh<\/strong><\/p>\n

– Tre \u0111\u01b0\u1ee3c c\u1eaft th\u00e0nh c\u00e1c m\u1eabu c\u00f3 \u0111\u1ed9 d\u00e0i 1, 3, v\u00e0 5 m. L\u00e0m r\u00e1ch ru\u1ed9t l\u1ee5a \u1edf l\u00f3ng tre \u0111\u1ea7u ti\u00ean c\u1ee7a m\u1ed7i m\u1eabu. D\u1ef1a tre v\u00e0o gi\u00e1 \u0111\u1ee1, \u0111\u1ed5 dung d\u1ecbch thu\u1ed1c v\u00e0o l\u00f3ng tre v\u1eeba \u0111\u01b0\u1ee3c gia c\u00f4ng. Theo d\u00f5i v\u00e0 b\u1ed5 sung thu\u1ed1c, khi quan s\u00e1t th\u1ea5y d\u1ecbch ch\u1ea3y ra \u1edf \u0111\u1ea7u d\u01b0\u1edbi c\u1ee7a m\u1eabu tre c\u00f3 n\u1ed3ng \u0111\u1ed9 gi\u1ed1ng v\u1edbi n\u1ed3ng \u0111\u1ed9 dung d\u1ecbch thu\u1ed1c ban \u0111\u1ea7u th\u00ec k\u1ebft th\u00fac qu\u00e1 tr\u00ecnh t\u1ea9m.<\/p>\n

– Tre \u0111\u01b0\u1ee3c c\u1eaft ng\u1eafn th\u00e0nh c\u00e1c m\u1eabu c\u00f3 chi\u1ec1u d\u00e0i 1m. Gi\u1eef m\u1eabu trong c\u00f9ng \u0111i\u1ec1u ki\u1ec7n d\u01b0\u1edbi m\u00e1i che. C\u1ee9 3 ng\u00e0y t\u1ea9m 1 m\u1ebb g\u1ed3m c\u00e1c m\u1eabu \u0111\u1ea1i di\u1ec7n cho c\u00e1c ph\u1ea7n g\u1ed1c, gi\u1eefa v\u00e0 ng\u1ecdn. X\u00e1c \u0111\u1ecbnh \u0111\u1ed9 \u1ea9m tre c\u1ee7a c\u00e1c m\u1ebb t\u1ea9m. Ti\u1ebfn h\u00e0nh li\u00ean t\u1ee5c \u0111\u1ebfn khi tre \u0111\u1ea1t \u1ea9m \u0111\u1ed9 kh\u00f4ng c\u00f2n kh\u1ea3 n\u0103ng th\u1ea5m thu\u1ed1c.<\/p>\n

– Kh\u1ea3 n\u0103ng th\u1ea5m c\u1ee7a tre khi t\u1ea9m b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p t\u1ea9m thay th\u1ebf nh\u1ef1a \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 b\u1eb1ng l\u01b0\u1ee3ng thu\u1ed1c th\u1ea5m v\u00e0o c\u00e2y tre v\u00e0 th\u1eddi gian t\u1ea9m.<\/p>\n

* L\u01b0\u1ee3ng thu\u1ed1c th\u1ea5m t\u00ednh theo c\u00f4ng th\u1ee9c:<\/p>\n

M = [( m1<\/sub> – m2<\/sub> ). C ] \u2013 m3<\/sub><\/p>\n

Trong \u0111\u00f3: M l\u00e0 l\u01b0\u1ee3ng thu\u1ed1c kh\u00f4 th\u1ea5m v\u00e0o tre (gr )<\/p>\n

m1<\/sub> l\u00e0 l\u01b0\u1ee3ng dung d\u1ecbch thu\u1ed1c \u0111\u1ed5 v\u00e0o \u1ed1ng tre (ml)<\/p>\n

m2<\/sub> l\u00e0 l\u01b0\u1ee3ng dung d\u1ecbch thu\u1ed1c trong \u1ed1ng tre c\u00f2n l\u1ea1i khi k\u1ebft th\u00fac t\u1ea9m (ml)<\/p>\n

C l\u00e0 n\u1ed3ng \u0111\u1ed9 dung d\u1ecbch thu\u1ed1c (%).<\/p>\n

m3<\/sub> l\u00e0 l\u01b0\u1ee3ng thu\u1ed1c b\u1ed9t hao ph\u00ed \u0111\u00e3 ch\u1ea3y ra c\u00f9ng nh\u1ef1a c\u00e2y [gr].<\/p>\n

* Th\u1eddi gian t\u1ea9m: t\u00ednh t\u1eeb khi \u0111\u1ed5 thu\u1ed1c \u0111\u1ebfn khi d\u1ecbch ch\u1ea3y ra \u1edf \u0111\u1ea7u d\u01b0\u1edbi c\u1ee7a \u1ed1ng tre c\u00f3 n\u1ed3ng \u0111\u1ed9 thu\u1ed1c v\u00e0 m\u00e0u thu\u1ed1c g\u1ea7n gi\u1ed1ng v\u1edbi dung d\u1ecbch thu\u1ed1c ban \u0111\u1ea7u.<\/p>\n

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

1. \u1ea3nh<\/strong> h\u01b0\u1edfng c\u1ee7a \u0111\u1ed9 d\u00e0i tre t\u1ea9m<\/strong><\/p>\n

B\u1ea3ng 1. Kh\u1ea3 n\u0103ng th\u1ea5m thu\u1ed1c ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1ed9 d\u00e0i tre t\u1ea9m<\/em><\/strong><\/p>\n\n\n\n\n\n\n\n\n
\u0110\u1ed9 d\u00e0i tre<\/p>\n

(m)<\/td>\n

Kh\u1ea3 n\u0103ng th\u1ea5m thu\u1ed1c b\u1ea3o qu\u1ea3n c\u1ee7a tre<\/td>\n<\/tr>\n
Tre gai<\/td>\nLu\u1ed3ng<\/td>\n<\/tr>\n
L\u01b0\u1ee3ng thu\u1ed1c th\u1ea5m<\/p>\n

( gr )<\/td>\n

Th\u1eddi gian t\u1ea9m<\/p>\n

( gi\u1edd )<\/td>\n

L\u01b0\u1ee3ng thu\u1ed1c th\u1ea5m<\/p>\n

( gr )<\/td>\n

Th\u1eddi gian t\u1ea9m<\/p>\n

( gi\u1edd )<\/td>\n<\/tr>\n

1<\/td>\n19.64<\/td>\n9.(3\/10)<\/td>\n15.92<\/td>\n11.(1\/2)<\/td>\n<\/tr>\n
3<\/td>\n49.80<\/td>\n34<\/td>\n43.69<\/td>\n39.(9\/10)<\/td>\n<\/tr>\n
5<\/td>\n82.36<\/td>\n55.(1\/10)<\/td>\n74.24<\/td>\n62.(1\/5)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

K\u1ebft qu\u1ea3 t\u1ea9m tre c\u00f3 \u0111\u1ed9 d\u00e0i kh\u00e1c nhau t\u1ea1i b\u1ea3ng 1 cho th\u1ea5y khi \u0111\u1ed9 d\u00e0i tre t\u1ea9m t\u0103ng th\u00ec l\u01b0\u1ee3ng thu\u1ed1c th\u1ea5m v\u00e0 th\u1eddi gian t\u1ea9m t\u0103ng l\u00ean. Qu\u00e1 tr\u00ecnh quan s\u00e1t th\u00ed nghi\u1ec7m cho th\u1ea5y c\u00e1c m\u1eabu l\u1ea5y \u1edf ph\u1ea7n ng\u1ecdn v\u00e0 ph\u1ea7n gi\u1eefa c\u1ee7a th\u00e2n tre lu\u00f4n \u0111\u1ea1t t\u1ed1c \u0111\u1ed9 th\u1ea5m cao h\u01a1n so v\u1edbi c\u00e1c m\u1eabu l\u1ea5y \u1ecf ph\u1ea7n g\u1ed1c. C\u00e1c m\u1eabu sau khi \u0111\u1ed5 thu\u1ed1c t\u1eeb 2 – 3 gi\u1edd \u0111\u00e3 quan s\u00e1t th\u1ea5y c\u00f3 m\u00e0u thu\u1ed1c ch\u1ea3y ra \u1edf m\u1ed9t s\u1ed1 \u1ed1ng m\u1ea1ch s\u00e1t v\u1edbi ru\u1ed9t l\u1ee5a t\u1ea1i \u0111\u1ea7u d\u01b0\u1edbi c\u1ee7a \u1ed1ng tre. Tuy nhi\u00ean, th\u1eddi gian t\u1ea9m sau \u0111\u00f3 c\u00f2n k\u00e9o d\u00e0i b\u1edfi v\u00ec \u0111\u00f3 l\u00e0 kho\u1ea3ng th\u1eddi gian \u0111\u1ec3 dung d\u1ecbch thu\u1ed1c ti\u1ebfp t\u1ee5c thay th\u1ebf tri\u1ec7t \u0111\u1ec3 nh\u1ef1a tre v\u00e0 thu\u1ed1c b\u1ea3o qu\u1ea3n khu\u1ebfch t\u00e1n \u0111\u1ec1u v\u00e0o trong th\u00e0nh tre. \u0110\u1ed1i v\u1edbi ph\u01b0\u01a1ng ph\u00e1p t\u1ea9m thay th\u1ebf nh\u1ef1a ho\u1eb7c ph\u01b0\u01a1ng ph\u00e1p t\u1ea9m Boucherie lu\u00f4n c\u00f3 m\u1ed9t l\u01b0\u1ee3ng thu\u1ed1c t\u1ed5n th\u1ea5t do thu\u1ed1c c\u00f9ng v\u1edbi nh\u1ef1a ch\u1ea3y ra kh\u1ecfi tre. K\u1ebft qu\u1ea3 ph\u00e2n t\u00edch \u0111\u1ecbnh l\u01b0\u1ee3ng thu\u1ed1c b\u1ea3o qu\u1ea3n t\u1ed5n th\u1ea5t \u0111\u01b0\u1ee3c ghi t\u1ea1i b\u1ea3ng 2.<\/p>\n

B\u1ea3ng 2. L\u01b0\u1ee3ng thu\u1ed1c b\u1ea3o qu\u1ea3n t\u1ed5n th\u1ea5t trong qu\u00e1 tr\u00ecnh t\u1ea9m thay th\u1ebf nh\u1ef1a<\/u><\/em><\/h2>\n\n\n\n\n\n\n\n
\u0110\u1ed9 d\u00e0i tre (m)<\/td>\nL\u01b0\u1ee3ng thu\u1ed1c t\u1ed5n hao (gr)<\/td>\n<\/tr>\n
Tre gai<\/td>\nLu\u1ed3ng<\/td>\n<\/tr>\n
1<\/td>\n7.06<\/td>\n5.15<\/td>\n<\/tr>\n
3<\/td>\n10.40<\/td>\n8.88<\/td>\n<\/tr>\n
5<\/td>\n15.07<\/td>\n12.80<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

K\u1ebft qu\u1ea3 c\u1ee7a b\u1ea3ng 2 cho th\u1ea5y l\u01b0\u1ee3ng thu\u1ed1c b\u1ea3o qu\u1ea3n t\u1ed5n th\u1ea5t trong qu\u00e1 tr\u00ecnh t\u1ea9m theo ph\u01b0\u01a1ng ph\u00e1p thay th\u1ebf nh\u1ef1a chi\u1ebfm t\u1ec9 l\u1ec7 x\u1ea5p x\u1ec9 20% so v\u1edbi l\u01b0\u1ee3ng thu\u1ed1c th\u1ea5m v\u00e0o tre. T\u1ed5ng h\u1ee3p s\u1ed1 li\u1ec7u c\u1ee7a b\u1ea3ng 1 v\u00e0 2 s\u1ebd l\u00e0 l\u01b0\u1ee3ng thu\u1ed1c b\u1ea3o qu\u1ea3n c\u1ea7n thi\u1ebft d\u00f9ng \u0111\u1ec3 t\u1ea9m tre tu\u1ef3 thu\u1ed9c v\u00e0o \u0111\u1ed9 d\u00e0i tre.<\/p>\n

T\u1eeb s\u1ed1 li\u1ec7u c\u1ee7a b\u1ea3ng1, m\u1ed1i t\u01b0\u01a1ng quan gi\u1eefa l\u01b0\u1ee3ng thu\u1ed1c th\u1ea5m (Y1<\/sub><\/strong>) v\u00e0 th\u1eddi gian t\u1ea9m (Y2<\/sub><\/strong>) v\u1edbi \u0111\u1ed9 d\u00e0i tre (X<\/strong>) \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp nh\u01b0 sau:<\/p>\n

+ Tre gai: Y1<\/sub> = 3.56 + 15.68 X (1)<\/p>\n

Y2<\/sub> = – 1.62 + 11.46 X (2)<\/p>\n

+ Lu\u1ed3ng: Y1<\/sub> = 0.87 + 14.58 X (3)<\/p>\n

Y2<\/sub> = – 0.16 + 12.67 X (4)<\/p>\n

C\u00e1c ph\u01b0\u01a1ng tr\u00ecnh (1), (2), (3), (4) th\u1ec3 hi\u1ec7n m\u1ed1i quan h\u1ec7 tuy\u1ebfn t\u00ednh gi\u1eefa l\u01b0\u1ee3ng thu\u1ed1c th\u1ea5m, th\u1eddi gian t\u1ea9m (Y) v\u1edbi \u0111\u1ed9 d\u00e0i tre (X), h\u1ec7 s\u1ed1 t\u01b0\u01a1ng quan R= 0.99. Khi \u0111\u1ed9 d\u00e0i tre t\u0103ng th\u00ec l\u01b0\u1ee3ng thu\u1ed1c th\u1ea5m v\u00e0 th\u1eddi gian t\u1ea9m t\u0103ng l\u00ean. K\u1ebft qu\u1ea3 th\u1ef1c nghi\u1ec7m cho th\u1ea5y v\u1edbi ph\u01b0\u01a1ng ph\u00e1p t\u1ea9m thay th\u1ebf nh\u1ef1a, tre gai \u0111\u1ea1t l\u01b0\u1ee3ng thu\u1ed1c th\u1ea5m cao h\u01a1n lu\u1ed3ng v\u00e0 t\u1ed1c \u0111\u1ed9 th\u1ea5m thu\u1ed1c nhanh h\u01a1n lu\u1ed3ng (th\u1eddi gian t\u1ea9m ng\u1eafn h\u01a1n).<\/p>\n

V\u1ec1 c\u01a1 ch\u1ebf th\u1ea5m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p t\u1ea9m thay th\u1ebf nh\u1ef1a, c\u00e1c c\u00f4ng tr\u00ecnh nghi\u00ean c\u1ee9u tr\u01b0\u1edbc \u1edf Vi\u1ec7t Nam m\u1edbi d\u1eebng l\u1ea1i \u1edf vi\u1ec7c nh\u1eadn x\u00e9t r\u1eb1ng dung d\u1ecbch thu\u1ed1c c\u00f3 kh\u1ea3 n\u0103ng th\u1ea5m ngang th\u00e0nh tre sau khi \u1ed1ng tre ch\u1ee9a dung d\u1ecbch thu\u1ed1c b\u1ea3o qu\u1ea3n \u0111\u00e3 \u0111\u01b0\u1ee3c l\u00e0m r\u00e1ch ru\u1ed9t l\u1ee5a v\u00e0 dung d\u1ecbch thu\u1ed1c c\u00f3 th\u1ec3 th\u1ea5m theo chi\u1ec1u t\u1eeb g\u1ed1c \u0111\u1ebfn ng\u1ecdn v\u00e0 t\u1eeb ng\u1ecdn \u0111\u1ebfn g\u1ed1c.<\/p>\n

Sau khi nghi\u00ean c\u1ee9u c\u1ea5u t\u1ea1o gi\u1ea3i ph\u1eabu c\u1ee7a tre, ch\u00fang t\u00f4i cho r\u1eb1ng, qu\u00e1 tr\u00ecnh th\u1ea5m thu\u1ed1c c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p t\u1ea9m thay th\u1ebf nh\u1ef1a \u1edf tre kh\u00e1c v\u1edbi ph\u01b0\u01a1ng ph\u00e1p t\u1ea9m Boucherie \u1edf g\u1ed7 b\u1edfi \u0111i\u1ec3m sau: Ph\u1ea7n ru\u1ed9t tre bao g\u1ed3m m\u1ed9t s\u1ed1 \u1ed1ng m\u1ea1ch c\u00f3 k\u00edch th\u01b0\u1edbc l\u1edbn ph\u00e2n b\u1ed1 tr\u00ean n\u1ec1n c\u00e1c t\u1ebf b\u00e0o m\u00f4 m\u1ec1m, khi l\u1edbp ru\u1ed9t l\u1ee5a v\u00e0 l\u1edbp t\u1ebf b\u00e0o c\u1ee9ng ho\u00e1 c\u1ee7a ru\u1ed9t tre b\u1ecb l\u00e0m r\u00e1ch, dung d\u1ecbch thu\u1ed1c b\u1ea3o qu\u1ea3n ch\u1ee9a trong \u1ed1ng ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp v\u1edbi v\u00e1ch c\u00e1c t\u1ebf b\u00e0o m\u00f4 m\u1ec1m. Do tre t\u1ea9m c\u00f2n t\u01b0\u01a1i, nh\u1ef1a tre trong c\u00e1c \u1ed1ng m\u1ea1ch \u0111ang \u1edf d\u1ea1ng l\u1ecfng, n\u01b0\u1edbc t\u1ef1 do chi\u1ebfm \u0111\u1ea7y trong c\u00e1c khoang r\u1ed7ng c\u1ee7a t\u1ebf b\u00e0o nhu m\u00f4 v\u00e0 gi\u1eefa c\u00e1c t\u1ebf b\u00e0o. D\u01b0\u1edbi \u00e1p l\u1ef1c t\u0129nh c\u1ee7a c\u1ed9t thu\u1ed1c trong \u1ed1ng tre, dung d\u1ecbch thu\u1ed1c d\u1ec5 d\u00e0ng \u0111i qua c\u00e1c l\u1ed7 th\u00f4ng ngang tr\u00ean v\u00e1ch c\u00e1c t\u1ebf b\u00e0o, v\u00e0o c\u00e1c \u1ed1ng m\u1ea1ch v\u00e0 t\u1ea1o th\u00e0nh d\u00f2ng ch\u1ea3y li\u00ean t\u1ee5c trong c\u00e1c \u1ed1ng m\u1ea1ch tre t\u1eeb tr\u00ean xu\u1ed1ng. M\u1eb7t kh\u00e1c, v\u1edbi \u0111\u1ed9 \u1ea9m tre r\u1ea5t l\u1edbn n\u00ean thu\u1ed1c b\u1ea3o qu\u1ea3n c\u0169ng d\u1ec5 d\u00e0ng khu\u1ebfch t\u00e1n v\u00e0o th\u00e0nh tre. Do \u0111\u00f3, tre t\u1ea9m theo ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 s\u1ef1 ph\u00e2n b\u1ed1 thu\u1ed1c b\u1ea3o qu\u1ea3n t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u1ed3ng \u0111\u1ec1u tr\u00ean ti\u1ebft di\u1ec7n ngang c\u1ee7a th\u00e0nh tre. Sau th\u1eddi gian t\u1ea9m tre 1 th\u00e1ng, \u0111\u1ec3 tre t\u01b0\u01a1ng \u0111\u1ed1i kh\u00f4, ti\u1ebfn h\u00e0nh ki\u1ec3m tra \u0111\u1ed9 th\u1ea5m s\u00e2u c\u1ee7a thu\u1ed1c t\u1ea1i l\u00f3ng \u0111\u1ea7u ti\u00ean ch\u1ee9a thu\u1ed1c v\u00e0 l\u00f3ng cu\u1ed1i c\u00f9ng c\u1ee7a \u0111o\u1ea1n tre t\u1ea9m. K\u1ebft qu\u1ea3 nh\u1eadn \u0111\u01b0\u1ee3c kh\u1eb3ng \u0111\u1ecbnh tre t\u1ea9m theo ph\u01b0\u01a1ng ph\u00e1p thay th\u1ebf nh\u1ef1a c\u1ea3i ti\u1ebfn c\u1ee7a Vi\u1ec7t Nam \u0111\u1ea3m b\u1ea3o hi\u1ec7u qu\u1ea3v\u00ec thu\u1ed1c th\u1ea5m t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u1ec1u trong th\u00e0nh tre d\u1ecdc theo chi\u1ec1u d\u00e0i \u0111o\u1ea1n tre t\u1ea9m.<\/p>\n

M\u1ed9t y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn qu\u00e1 tr\u00ecnh th\u1ea5m thu\u1ed1c l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng tre b\u1ecb ki\u1ebfn \u0111\u1ee5c. Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y kh\u00e1 ph\u1ed5 bi\u1ebfn, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ed1i v\u1edbi tre gai. Khi s\u1eed d\u1ee5ng nh\u1eefng \u1ed1ng tre b\u1ecb ki\u1ebfn \u0111\u1ee5c \u0111\u1ec3 ch\u1ee9a dung d\u1ecbch thu\u1ed1c, n\u1ebfu ch\u1ec9 c\u1ea1o r\u00e1ch ru\u1ed9t l\u1ee5a nh\u01b0 c\u00e1c \u1ed1ng b\u00ecnh th\u01b0\u1eddng th\u00ec dung d\u1ecbch thu\u1ed1c th\u1ea5m r\u1ea5t ch\u1eadm, kh\u00f4ng \u0111\u1ea3m b\u1ea3o hi\u1ec7u qu\u1ea3 b\u1ea3o qu\u1ea3n. \u0110\u1ec3 kh\u1eafc ph\u1ee5c, m\u1ed9t gi\u1ea3i ph\u00e1p k\u1ef9 thu\u1eadt \u0111\u00e3 th\u1ef1c hi\u1ec7n \u0111\u1ec3 t\u1ea9m nh\u1eefng \u0111o\u1ea1n tre b\u1ecb ki\u1ebfn \u0111\u1ee5c nh\u01b0 sau:<\/p>\n

– Ch\u1ecdn \u1ed1ng tre \u0111\u1ea7u ti\u00ean \u0111\u1ec3 ch\u1ee9a thu\u1ed1c ph\u1ea3i kh\u00f4ng c\u00f3 l\u1ed7 th\u1ee7ng do b\u1ecb ki\u1ebfn \u0111\u1ee5c (c\u00e1c \u1ed1ng th\u1ee9 hai tr\u1edf \u0111i b\u1ecb th\u1ee7ng v\u1eabn ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c).<\/p>\n

– D\u00f9ng d\u1ee5ng c\u1ee5 s\u1eafc, \u0111\u1ee5c r\u00e1ch m\u1ed9t l\u1edbp ru\u1ed9t tre trong c\u00f9ng c\u1ee7a \u1ed1ng tre ch\u1ee9a thu\u1ed1c v\u1edbi chi\u1ec1u d\u00e0y 1 \u2013 2 mm .<\/p>\n

K\u1ebft qu\u1ea3 theo d\u00f5i di\u1ec5n bi\u1ebfn qu\u00e1 tr\u00ecnh t\u1ea9m \u1edf nh\u1eefng \u1ed1ng tre b\u1ecb ki\u1ebfn \u0111\u1ee5c \u0111\u00e3 \u0111\u01b0\u1ee3c x\u1eed l\u00fd nh\u01b0 tr\u00ean cho th\u1ea5y t\u1ed1c \u0111\u1ed9 th\u1ea5m thu\u1ed1c \u1edf c\u00e1c \u1ed1ng tre n\u00e0y t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi t\u1ed1c \u0111\u1ed9 th\u1ea5m c\u1ee7a c\u00e1c m\u1eabu tre l\u00e0nh l\u1eb7n. Gi\u1ea3i ph\u00e1p k\u1ef9 thu\u1eadt tr\u00ean th\u1ef1c hi\u1ec7n r\u1ea5t d\u1ec5 d\u00e0ng v\u00e0 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 b\u1ec1n v\u1eefng khi s\u1eed d\u1ee5ng \u1ed1ng tre ch\u1ee9a thu\u1ed1c.<\/p>\n

2. X\u00e1c \u0111\u1ecbnh ng\u01b0\u1ee1ng \u0111\u1ed9 \u1ea9m tre c\u1ea7n thi\u1ebft cho qu\u00e1 tr\u00ecnh t\u1ea9m<\/strong><\/p>\n

Kh\u1ea3 n\u0103ng th\u1ea5m thu\u1ed1c c\u1ee7a tre khi t\u1ea9m t\u1ea1i c\u00e1c th\u1eddi \u0111i\u1ec3m kh\u00e1c nhau sau ch\u1eb7t h\u1ea1 \u0111\u01b0\u1ee3c ghi t\u1ea1i b\u1ea3ng 3.<\/p>\n

B\u1ea3ng 3. \u0110\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng th\u1ea5m thu\u1ed1c c\u1ee7a tre theo th\u1eddi gian sau ch\u1eb7t h\u1ea1<\/em><\/strong><\/p>\n\n\n\n\n\n\n\n
Th\u1eddi gian sau ch\u1eb7t h\u1ea1<\/p>\n

(ng\u00e0y )<\/td>\n

Kh\u1ea3 n\u0103ng th\u1ea5m c\u1ee7a tre gai<\/td>\nKh\u1ea3 n\u0103ng th\u1ea9m c\u1ee7a lu\u1ed3ng<\/td>\n\u0110\u00e1nh gi\u00e1<\/td>\n<\/tr>\n
L\u01b0\u1ee3ng thu\u1ed1c th\u1ea5m (gr)<\/td>\nTh\u1eddi gian th\u1ea5m (h)<\/td>\nT\u1ed1c \u0111\u1ed9 th\u1ea5m (gr\/h)<\/td>\n\u0110\u1ed9 \u1ea9m tre (%)<\/td>\nL\u01b0\u1ee3ng thu\u1ed1c th\u1ea5m (gr)<\/td>\nTh\u1eddi gian th\u1ea5m (h)<\/td>\nT\u1ed1c \u0111\u1ed9 th\u1ea5m (gr\/h)<\/td>\n\u0110\u1ed9 \u1ea9m tre (%)<\/td>\n<\/tr>\n
2< t \u00a318<\/td>\n18.5<\/td>\n11.(3\/5)<\/td>\n1,59<\/td>\n103 >w> 72<\/td>\n15.3<\/td>\n13.(2\/10)<\/td>\n1,15<\/td>\n98>w>70<\/td>\nTh\u1ea5m t\u1ed1t<\/td>\n<\/tr>\n
18<\/td>\n15.3<\/td>\n18.(9\/10)<\/td>\n0.81<\/td>\n72 > w > 53<\/td>\n12.5<\/td>\n20.(1\/4)<\/td>\n0,61<\/td>\n70 >w> 50<\/td>\nTh\u1ea5m ch\u1eadm<\/td>\n<\/tr>\n
t > 31<\/td>\nThu\u1ed1c th\u1ea5m r\u1ea5t ch\u1eadm v\u00e0 kh\u00f4ng th\u1ea5m<\/td>\nw < 50<\/td>\nKh\u00f4ng th\u1ea5m<\/td>\nw < 50<\/td>\nkh\u00f4ng th\u1ea5m<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

K\u1ebft qu\u1ea3 th\u1ef1c nghi\u1ec7m t\u1ea1i b\u1ea3ng 3 cho th\u1ea5y kh\u1ea3 n\u0103ng th\u1ea5m thu\u1ed1c c\u1ee7a tre t\u1ea9m theo ph\u01b0\u01a1ng ph\u00e1p thay th\u1ebf nh\u1ef1a gi\u1ea3m d\u1ea7n theo th\u1eddi gian sau ch\u1eb7t h\u1ea1. Trong kho\u1ea3ng th\u1eddi gian t\u1eeb 20 ng\u00e0y tr\u1edf l\u1ea1i, \u0111\u1ed9 \u1ea9m tre gi\u1ea3m xu\u1ed1ng x\u1ea5p x\u1ec9 70%, tre th\u1ea5m thu\u1ed1c r\u1ea5t t\u1ed1t. Sau \u0111\u00f3, khi \u0111\u1ed9 \u1ea9m tre gi\u1ea3m xu\u1ed1ng d\u01b0\u1edbi 70% kh\u1ea3 n\u0103ng th\u1ea5m thu\u1ed1c c\u1ee7a tre gi\u1ea3m r\u00f5 r\u1ec7t. L\u00fac n\u00e0y m\u00e0u s\u1eafc l\u1edbp bi\u1ec3u b\u00ec tre kh\u00f4ng c\u00f2n m\u00e0u xanh t\u01b0\u01a1i m\u00e0 \u0111\u00e3 chuy\u1ec3n sang m\u00e0u t\u00e1i. \u0110\u1ed1i v\u1edbi tre \u0111\u00e3 ch\u1eb7t \u0111\u01b0\u1ee3c m\u1ed9t th\u00e1ng tr\u1edf l\u00ean, \u0111\u1ed9 \u1ea9m gi\u1ea3m xu\u1ed1ng d\u01b0\u1edbi 50%, tre th\u1ea5m thu\u1ed1c r\u1ea5t kh\u00f3 kh\u0103n v\u00e0 s\u1ebd kh\u00f4ng \u0111\u1ea3m b\u1ea3o hi\u1ec7u qu\u1ea3 b\u1ea3o qu\u1ea3n. \u0110\u1ec3 d\u1ec5 d\u00e0ng so s\u00e1nh v\u1ec1 kh\u1ea3 n\u0103ng th\u1ea5m thu\u1ed1c c\u1ee7a tre theo t\u1eebng giai \u0111o\u1ea1n sau ch\u1eb7t h\u1ea1, tr\u00ean c\u01a1 s\u1edf l\u01b0\u1ee3ng thu\u1ed1c v\u00e0 th\u1eddi gian th\u1ea5m, ch\u00fang t\u00f4i t\u00ednh t\u1ed1c \u0111\u1ed9 th\u1ea5m thu\u1ed1c trung b\u00ecnh c\u1ee7a tre gai v\u00e0 lu\u1ed3ng. K\u1ebft qu\u1ea3 t\u00ednh to\u00e1n cho th\u1ea5y t\u1ed1c \u0111\u1ed9 th\u1ea5m thu\u1ed1c trung b\u00ecnh c\u1ee7a tre \u0111\u1ec3 t\u1eeb 18- 30 ng\u00e0y sau ch\u1eb7t h\u1ea1 so v\u1edbi t\u1ed1c \u0111\u1ed9 th\u1ea5m thu\u1ed1c trung b\u00ecnh c\u1ee7a tre \u0111\u1ec3 t\u1eeb 2-18 ng\u00e0y \u0111\u00e3 gi\u1ea3m kho\u1ea3ng 45%. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y kh\u1ea3 n\u0103ng th\u1ea5m thu\u1ed1c c\u1ee7a tre khi t\u1ea9m theo ph\u01b0\u01a1ng ph\u00e1p thay th\u1ebf nh\u1ef1a ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o \u0111\u1ed9 \u1ea9m tre.<\/p>\n

V\u1edbi k\u1ebft qu\u1ea3 nh\u1eadn \u0111\u01b0\u1ee3c cho ph\u00e9p k\u1ebft lu\u1eadn khi \u0111\u1ed9 \u1ea9m tre W \u00b370% tre t\u1ea9m \u0111\u1ea3m b\u1ea3o hi\u1ec7u qu\u1ea3n b\u1ea3o qu\u1ea3n. Th\u1eddi gian gi\u1eef tre sau ch\u1eb7t h\u1ea1 \u0111\u1ec3 c\u00f3 th\u1ec3 t\u1ea9m theo ph\u01b0\u01a1ng ph\u00e1p thay th\u1ebf nh\u1ef1a kh\u00f4ng ph\u1ea3i ch\u1ec9 gi\u1edbi h\u1ea1n trong v\u00e0i ng\u00e0y m\u00e0 c\u00f3 th\u1ec3 k\u00e9o d\u00e0i h\u01a1n. N\u1ebfu tre sau ch\u1eb7t h\u1ea1 \u0111\u01b0\u1ee3c gi\u1eef kh\u00f4ng b\u1ecb ph\u01a1i n\u1eafng tr\u1ef1c ti\u1ebfp ho\u1eb7c \u0111i\u1ec1u ki\u1ec7n \u0111\u1ed9 \u1ea9m kh\u00f4ng kh\u00ed cao tre s\u1ebd l\u00e2u b\u1ecb kh\u00f4, kho\u1ea3ng th\u1eddi gian \u0111\u1ec3 c\u00f3 th\u1ec3 t\u1ea9m tre s\u1ebd t\u0103ng theo. V\u1edbi quy m\u00f4 s\u1eed d\u1ee5ng tre t\u1ea1i gia \u0111\u00ecnh, ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 x\u1eed l\u00fd b\u1ea3o qu\u1ea3n tre ngay sau khi ch\u1eb7t h\u1ea1. Nh\u01b0ng v\u1edbi c\u00e1c c\u01a1 s\u1edf s\u1eed d\u1ee5ng tre \u1edf quy m\u00f4 l\u1edbn h\u01a1n th\u00ec tre tr\u01b0\u1edbc khi \u0111\u01b0a \u0111\u1ebfn \u0111\u00e3 c\u00f3 th\u1eddi gian n\u1eb1m l\u01b0u l\u1ea1i tr\u00ean c\u00e1c kho b\u00e3i t\u01b0\u01a1ng \u0111\u1ed1i l\u00e2u. C\u0103n c\u1ee9 v\u00e0o k\u1ebft qu\u1ea3 ki\u1ec3m tra \u0111\u1ed9 \u1ea9m ho\u1eb7c m\u00e0u s\u1eafc c\u1ee7a bi\u1ec3u b\u00ec tre v\u00e0 l\u00fd l\u1ecbch khai th\u00e1c c\u1ee7a tre nguy\u00ean li\u1ec7u, c\u00f3 th\u1ec3 \u0111\u00e1nh gi\u00e1 \u0111\u01b0\u1ee3c m\u1ee9c \u0111\u1ed9 t\u01b0\u01a1i c\u1ee7a tre \u0111\u1ec3 x\u1eed l\u00fd b\u1ea3o qu\u1ea3n theo ph\u01b0\u01a1ng ph\u00e1p thay th\u1ebf nh\u1ef1a.<\/p>\n

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

– Tre t\u1ea9m theo ph\u01b0\u01a1ng ph\u00e1p thay th\u1ebf nh\u1ef1a c\u00f3 l\u01b0\u1ee3ng thu\u1ed1c th\u1ea5m v\u00e0 th\u1eddi gian t\u1ea9m ph\u1ee5 thu\u1ed9c tuy\u1ebfn t\u00ednh v\u00e0o \u0111\u1ed9 d\u00e0i tre.<\/p>\n

– \u0110\u1ec3 qu\u00e1 tr\u00ecnh thay th\u1ebf nh\u1ef1a \u0111\u1ea1t hi\u1ec7u qu\u1ea3, tre c\u1ea7n c\u00f3 \u0111\u1ed9 \u1ea9m (W) \u00b370%.<\/p>\n

– Tre gai c\u00f3 kh\u1ea3 n\u0103ng th\u1ea5m thu\u1ed1c t\u1ed1t h\u01a1n lu\u1ed3ng.<\/p>\n

– C\u00e1c ph\u01b0\u01a1ng tr\u00ecnh (1), (2), (3), (4) l\u00e0 c\u01a1 s\u1edf \u0111\u1ec3 x\u00e2y d\u1ef1ng quy tr\u00ecnh t\u1ea9m tre t\u01b0\u01a1i theo ph\u01b0\u01a1ng ph\u00e1p thay th\u1ebf nh\u1ef1a.<\/p>\n

Summary: <\/em><\/strong>In Vietnam the demand for bambos in construction is still very great. To contribute to lengthening the service and increase the efficiency in using this specious resource, the research on the method of sap displacement for bamboo preservation has been continued, making full use of the hollow bamboo culm to hold the preservative. Details to be studied is the preservative impregnation capability and the necessary moisture threshhold of bamboo for effective bamboo treatment. Improved method of sap- displacement preservative impregnation by Vietnam is suitable for preservation of bamboos used in sparsely distributed households.<\/p>\n

T\u00e0i li\u1ec7u tham kh\u1ea3o<\/strong><\/p>\n

1. Nguy\u1ec5n Xu\u00e2n Khu, L\u00ea Xu\u00e2n T\u00ecnh (1993). L\u00e2m s\u1ea3n v\u00e0 B\u1ea3o qu\u1ea3n l\u00e2m s\u1ea3n, T\u1eadp II, Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p.<\/p>\n

2. L\u00ea V\u0103n N\u00f4ng (1976). B\u00e1o c\u00e1o k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u b\u1ea3o qu\u1ea3n lu\u1ed3ng trong x\u00e2y d\u1ef1ng. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u C\u00f4ng nghi\u1ec7p r\u1eebng, (6), tr 1- 10.<\/p>\n

3. Ph\u00f2ng nghi\u00ean c\u1ee9u B\u1ea3o qu\u1ea3n l\u00e2m s\u1ea3n (1985). K\u1ef9 thu\u1eadt b\u1ea3o qu\u1ea3n l\u00e2m s\u1ea3n. B\u00e1o c\u00e1o t\u1ed5ng k\u1ebft \u0111\u1ec1 t\u00e0i 06.02 thu\u1ed9c ch\u01b0\u01a1ng tr\u00ecnh 04-01, Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam, H\u00e0 N\u1ed9i.<\/p>\n

4. Nguy\u1ec5n T\u1eed \u01af\u1edfng (2000). C\u00e1c lo\u00e0i tre v\u1edbi d\u1ef1 \u00e1n 5 tri\u1ec7u ha r\u1eebng.Th\u00f4ng tin KHKT L\u00e2m nghi\u1ec7p, (2), tr 5-8.<\/p>\n

5. Kumar S., Dobriyal P.B. (1988), “Preservation treatment of bamboo for stuctural uses. Bamboos current reasearch. Proceedings of the International Bamboo Workshop held in Cochin India, pp. 199-206.<\/p>\n

6. Kumar S. , Shukla K.S., Dew I., Dobriyal P.B. (1994). Bamboo Preservation Techniques: A Review. Published Jointly INBAR and ICFRE.<\/p>\n

7. Liese W. (1985). Anatomy and propertiess of bamboo. Recent research on bamboos.<\/em> Proceedings of the International Bamboo Workshop held in Hangzhou, People\u2019s Republic of China, pp. 196-208.<\/p>\n

8. Purushoham, Sudan S.K., Sagar V. (1954). Preservative treatment of greenbamboos under low pneumatic pressures. Ind. For. Bull,No 178.<\/p>\n

9. Singh B., Tewari M.C. (1980). Studies on the treatment of green bamboo by steeping and sap displacement methods. J. Ind. Acad. Woodsci. 21(1), pp. 21-27.<\/p>\n

10. Sonti V.R. ( 1988). A workable solution for preserving round bamboo with ASCU ( CCA type salts). Bamboos current reasearch.Proceedings of the International Bamboo Workshop held in Cochin India, pp. 207-208.<\/p>\n","protected":false},"excerpt":{"rendered":"

\u1edf Vi\u1ec7t Nam, tre là ngu\u1ed3n tài nguyên phong phú, phân b\u1ed1 r\u1ed9ng rãi \u1edf nhi\u1ec1u vùng trong c\u1ea3 n\u01b0\u1edbc. Nhu c\u1ea7u v\u1ec1 tre làm nhà c\u1eeda t\u1ea1i các vùng nông thôn n\u01b0\u1edbc ta r\u1ea5t l\u1edbn. Nguyên li\u1ec7u tre \u0111\u1ec3 xây d\u1ef1ng nhà \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf hai d\u1ea1ng chính: D\u1ea1ng nguyên \u1ed1ng làm các b\u1ed9 ph\u1eadn ch\u1ecbu l\u1ef1c nh\u01b0 các lo\u1ea1i xà, c\u1ed9t; D\u1ea1ng ch\u1ebb thanh \u0111\u1ec3 làm giàn mái, vách ng\u0103n che, sàn nhà và các chi ti\u1ebft nh\u1ecf khác.<\/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\/8604"}],"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=8604"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8604\/revisions"}],"predecessor-version":[{"id":19297,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8604\/revisions\/19297"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=8604"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=8604"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=8604"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}