{"id":14444,"date":"2015-03-28T15:29:44","date_gmt":"2015-03-28T08:29:44","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/?p=14444"},"modified":"2015-03-23T15:40:48","modified_gmt":"2015-03-23T08:40:48","slug":"bao-cao-ket-qua-nghien-cuu-ket-qua-nghien-cuu-chon-loai-vat-lieu-che-va-xac-dinh-che-do-che-sang-trong-nha-giam-hom-theo-yeu-cau-cong-nghe-giam-hom-cay-lam-nghiep","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/bao-cao-ket-qua-nghien-cuu-ket-qua-nghien-cuu-chon-loai-vat-lieu-che-va-xac-dinh-che-do-che-sang-trong-nha-giam-hom-theo-yeu-cau-cong-nghe-giam-hom-cay-lam-nghiep\/","title":{"rendered":"B\u00e1o c\u00e1o k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u: K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u ch\u1ecdn lo\u1ea1i v\u1eadt li\u1ec7u che v\u00e0 x\u00e1c \u0111\u1ecbnh ch\u1ebf \u0111\u1ed9 che s\u00e1ng trong nh\u00e0 gi\u00e2m hom theo y\u00eau c\u1ea7u c\u00f4ng ngh\u1ec7 gi\u00e2m hom c\u00e2y l\u00e2m nghi\u1ec7p"},"content":{"rendered":"

TS. L\u00ea Xu\u00e2n Ph\u00fac v\u00e0 c\u00e1c CTV<\/em><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/i>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/i><\/p>\n

I- M\u1ede \u0110\u1ea6U<\/b><\/p>\n

Ch\u1ea5t l\u01b0\u1ee3ng gi\u1ed1ng quy\u1ebft \u0111\u1ecbnh n\u0103ng su\u1ea5t, ch\u1ea5t l\u01b0\u1ee3ng r\u1eebng tr\u1ed3ng. Ng\u00e0y nay, \u1edf n\u01b0\u1edbc ta nhu c\u1ea7u c\u00e2y gi\u1ed1ng ch\u1ea5t l\u01b0\u1ee3ng cao cho tr\u1ed3ng r\u1eebng nguy\u00ean li\u1ec7u, ph\u00f2ng h\u1ed9 v\u00e0 b\u1ea3o t\u1ed3n ngu\u1ed3n gen ng\u00e0y c\u00e0ng l\u1edbn. So v\u1edbi ph\u01b0\u01a1ng ph\u00e1p gieo h\u1ea1t, nu\u00f4i c\u1ea5y m\u00f4, gi\u00e2m hom ph\u1ed5 bi\u1ebfn v\u00e0 th\u00edch h\u1ee3p nh\u1ea5t cho nhi\u1ec1u qu\u1ed1c gia tr\u00ean th\u1ebf gi\u1edbi \u0111\u1ec3 \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u tr\u00ean v\u00ec \u0111\u1ea3m b\u1ea3o t\u00ednh di truy\u1ec1n \u0111\u1ea7y \u0111\u1ee7, kh\u00f4ng c\u1ea7n c\u00f4ng ngh\u1ec7 cao, v\u1ed1n \u0111\u1ea7u t\u01b0 kh\u00f4ng l\u1edbn v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng s\u1ea3n xu\u1ea5t v\u1edbi s\u1ed1 l\u01b0\u1ee3ng l\u1edbn n\u00ean r\u1ea5t ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec1u ki\u1ec7n s\u1ea3n xu\u1ea5t c\u1ee7a c\u00e1c c\u01a1 s\u1edf l\u00e2m nghi\u1ec7p \u1edf Vi\u1ec7t Nam, Qu\u00e1 tr\u00ecnh ra r\u1ec5 v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a hom gi\u00e2m ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o ti\u1ec3u kh\u00ed h\u1eadu m\u00f4i tr\u01b0\u1eddng gi\u00e2m hom (MTGH) \u1edf trong NGH: nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 \u1ea9m kh\u00f4ng kh\u00ed, \u00e1nh s\u00e1ng,… [1], trong \u0111\u00f3 \u00e1nh s\u00e1ng l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng nh\u1ea5t v\u00ec kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u01b0\u1ee3c cho qu\u00e1 tr\u00ecnh quang h\u1ee3p c\u1ee7a c\u00e2y xanh (hom gi\u00e2m) v\u00e0 c\u00f2n \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 \u1ea9m trong MTGH do t\u00e1c \u0111\u1ed9ng c\u1ee7a n\u0103ng l\u01b0\u1ee3ng b\u1ee9c x\u1ea1 m\u1eb7t tr\u1eddi..<\/p>\n

\u00c1nh s\u00e1ng th\u00edch h\u1ee3p cho qu\u00e1 tr\u00ecnh ra r\u1ec5 c\u1ee7a \u0111a s\u1ed1 c\u00e1c lo\u00e0i c\u00e2y nhi\u1ec7t \u0111\u1edbi l\u00e0 \u00e1nh s\u00e1ng t\u00e1n x\u1ea1 c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng trong b\u00f3ng r\u00e2m [1], kho\u1ea3ng 4.000 \u00f7 8.000 lux t\u00f9y thu\u1ed9c m\u00f9a v\u00e0 th\u1eddi \u0111i\u1ec3m trong ng\u00e0y [4]. K\u1ebft qu\u1ea3 th\u00ed nghi\u1ec7m [4].cho th\u1ea5y: hom Keo lai v\u1eabn ra r\u1ec5 tr\u00ean 90 % v\u00e0 ph\u00e1t tri\u1ec3n b\u00ecnh th\u01b0\u1eddng trong MTGH c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng t\u1edbi 12.000 lux v\u00e0o kho\u1ea3ng gi\u0169a tr\u01b0a trong 6 – 8 ng\u00e0y n\u1eafng n\u00f3ng v\u00e0 1500 lux c\u0169ng v\u00e0o kho\u1ea3ng gi\u1eefa tr\u01b0a trong 4 \u2013 5 ng\u00e0y l\u1ea1nh, m\u01b0a ph\u00f9n<\/p>\n

C\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng t\u1ef1 nhi\u00ean (ngo\u00e0i tr\u1eddi) bi\u1ebfn \u0111\u1ed9ng r\u1ea5t r\u1ed9ng do ph\u1ee5 thu\u1ed9c v\u00e0o c\u01b0\u1eddng \u0111\u1ed9 n\u1eafng m\u1eb7t tr\u1eddi v\u00e0 kh\u00ed h\u1eadu, th\u1eddi ti\u1ebft. \u1ede V\u00f9ng B\u1eafc B\u1ed9 v\u00e0 B\u1eafc Trung B\u1ed9 n\u01b0\u1edbc ta, kh\u00ed h\u1eadu th\u1eddi ti\u1ebft r\u1ea5t kh\u1eafc nghi\u1ec7t v\u00e0 bi\u1ebfn \u0111\u1ed9ng m\u1ea1nh do gi\u00f3 m\u00f9a \u0110\u00f4ng B\u1eafc, gi\u00f3 L\u00e0o. V\u00e0o m\u00f9a h\u00e8 n\u1eafng n\u00f3ng d\u1eef d\u1ed9i, v\u00e0o m\u00f9a \u0111\u00f4ng v\u00e0 \u0111\u1ea7u xu\u00e2n, l\u1ea1nh gi\u00e1 v\u00e0 m\u00e2y m\u00f9, m\u01b0a phun d\u00e0y \u0111\u1eb7c.<\/p>\n

\u0110\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng th\u00edch h\u1ee3p cho c\u00e2y gi\u1ed1ng, nhi\u1ec1u bi\u1ec7n ph\u00e1p che n\u1eafng v\u00e0 v\u1eadt li\u1ec7u che kh\u00e1c nhau \u0111\u00e3 \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u \u00fang d\u1ee5ng: nh\u00e0 k\u00ednh, nh\u00e0 l\u01b0\u1edbi, nh\u00e0 nilon, che\u00a0 t\u1ea5m nh\u1ef1a composit,…. \u1ede Vi\u1ec7t Nam, \u0111\u00e3 nghi\u00ean c\u1ee9u gi\u00e2m hom nhi\u1ec1u lo\u00e0i c\u00e2y l\u00e2m nghi\u1ec7p trong m\u1ed9t s\u1ed1 nh\u00e0 k\u00ednh hi\u1ec7n \u0111\u1ea1i nh\u1eadp n\u1ed9i nh\u01b0ng t\u1ef7 l\u1ec7 hom ra r\u1ec5 r\u1ea5t th\u1ea5p trong khi gi\u00e1 thi\u1ebft b\u1ecb cao, chi ph\u00ed s\u1ea3n xu\u1ea5t r\u1ea5t l\u1edbn nh\u1ea5t l\u00e0 chi ph\u00ed \u0111i\u1ec7n n\u0103ng trong m\u00f9a n\u1eafng n\u00f3ng. C\u00e1c NGH \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u trong n\u01b0\u1edbc \u0111on gi\u1ea3n h\u01a1n, ch\u1ec9 bao g\u1ed3m: c\u00e1c lu\u1ed1ng gi\u00e2m hom \u0111\u01b0\u1ee3c x\u00e2y b\u1eb1ng g\u1ea1ch d\u1ea1ng b\u1ec3 n\u00f4ng c\u00f3 h\u1ec7 th\u1ed1ng t\u01b0\u1edbi n\u01b0\u1edbc phun s\u01b0\u01a1ng m\u00f9 v\u00e0 \u0111\u01b0\u1ee3c \u0111\u1eb7t d\u01b0\u1edbi d\u00e0n che n\u1eafng. M\u1ed7i lu\u1ed1ng gi\u00e2m c\u00f3 v\u00f2m che ri\u00eang bi\u1ec7t d\u1ea1ng n\u1eeda h\u00ecnh tr\u1ee5, m\u1eb7t ngo\u00e0i \u0111\u01b0\u1ee3c ph\u1ee7 nilon trong su\u1ed1t \u0111\u1ec3 l\u00e0m t\u00e1n x\u1ea1, l\u00e0m \u0111\u1ec1u \u00e1nh s\u00e1ng tr\u00ean m\u1eb7t lu\u1ed1ng gi\u00e2m \u0111\u1ed3ng th\u1eddi gi\u1eef \u1ea9m cho kh\u00f4ng kh\u00ed b\u00ean trong v\u00e0 gi\u00e1 th\u1ec3 gi\u00e2m. V\u1eadt li\u1ec7u che s\u00e1ng th\u01b0\u1eddng l\u00e0 t\u1ea5m nh\u1ee5a composite m\u00e0u tr\u1eafng \u0111\u1ee5c, l\u01b0\u1edbi nilon chuy\u00ean d\u1ee5ng, nilon trong su\u1ed1t v\u00e0 k\u1ec3 c\u1ea3 ph\u00ean tre n\u1ee9a. \u1ede c\u00e1c NGH n\u00e0y \u0111\u00e3 gi\u1ea3m \u0111\u01b0\u1ee3c \u0111\u00e1ng k\u1ec3 hi\u1ec7u \u1ee9ng nh\u00e0 k\u00ednh trong m\u00f9a n\u1eafng n\u00f3ng v\u00e0 \u0111\u1ea1t t\u1ef7 l\u1ec7 hom ra r\u1ec5 cao h\u01a1n nhi\u1ec1u so v\u1edbi khi gi\u00e2m trong c\u00e1c nh\u00e0 k\u00ednh. \u00a0Tuy nhi\u00ean t\u1ed3n t\u1ea1i r\u1ea5t l\u1edbn \u0111\u1ed1i v\u1edbi c\u00e1c NGH n\u00e0y l\u00e0 v\u1eadt li\u1ec7u che s\u00e1ng \u0111a d\u1ea1ng kh\u00f4ng \u0111\u1ed3ng nh\u1ea5t v\u1ec1 k\u00edch th\u01b0\u1edbc, t\u1ef7 l\u1ec7 che v\u00e0 h\u1ec7 th\u1ed1ng che s\u00e1ng kh\u00f4ng \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c c\u00e1c m\u1ee9c \u0111\u1ed9 che kh\u00e1c nhau \u0111\u1ec3 t\u1ea1o m\u00f4i tr\u01b0\u1eddng th\u00edch h\u1ee3p theo y\u00eau c\u1ea7u c\u00f4ng ngh\u1ec7 gi\u00e2m hom. Th\u00eam n\u1eefa, c\u00e1c lo\u1ea1i l\u01b0\u1edbi che \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng (do Trung Qu\u1ed1c s\u1ea3n xu\u1ea5t) r\u1ea5t nhanh b\u1ecb m\u1ee5c v\u00e0 r\u00e1ch h\u1ecfng, t\u1ea5m l\u1ee3p nh\u1ef1a composite, nilon nhanh b\u1ecb \u1ed1 b\u1ea9n v\u00e0 r\u1ea5t kh\u00f3 t\u1ea9y r\u1eeda. C\u00e1c c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t ph\u1ea3i th\u01b0\u1eddng xuy\u00ean t\u1ea9y r\u1eeda m\u00e1i v\u00e0 v\u00e1ch che b\u1eb1ng t\u1ea5m nh\u1ef1a composite, m\u1ea5t nhi\u1ec1u c\u00f4ng s\u1ee9c song hi\u1ec7u qu\u1ea3 r\u1ea5t th\u1ea5p. M\u1eb7c d\u00f9 \u0111\u1ea1t t\u1ef7 l\u1ec7 hom ra r\u1ec5 cao h\u01a1n \u1edf c\u00e1c nh\u00e0 k\u00ednh, c\u00e1c NGH n\u00e0y c\u0169ng ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 trong 4 \u2013 6 th\u00e1ng \/n\u0103m khi th\u1eddi ti\u1ebft n\u1eafng nhi\u1ec1u, \u00edt n\u00f3ng, ch\u1ec9 gi\u00e2m hom \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y r\u1eebng thu\u1ed9c nh\u00f3m kh\u00f4ng kh\u00f3 ra r\u1ec5.<\/p>\n

Cho \u0111\u1ebfn nay, ch\u01b0a \u0111\u1ee7 c\u0103n c\u1ee9 khoa h\u1ecdc \u0111\u1ec3 t\u00ednh to\u00e1n thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng che s\u00e1ng c\u1ee7a c\u00e1c NGH l\u00e2m nghi\u1ec7p \u1edf Vi\u1ec7t Nam nh\u1eb1m \u0111i\u1ec1u ti\u1ebft \u00e1nh s\u00e1ng t\u01b0 nhi\u00ean th\u00edch h\u1ecdp cho qu\u00e1 tr\u00ecnh gi\u00e2m hom t\u00f9y thu\u1ed9c lo\u00e0i c\u00e2y, th\u1eddi ti\u1ebft, th\u1eddi gian trong ng\u00e0y, m\u00f9a v\u1ee5. V\u00ec v\u1eady, nghi\u00ean c\u1ee9u ch\u1ecdn lo\u1ea1i v\u1eadt li\u1ec7u che, x\u00e1c \u0111\u1ecbnh m\u1ed9t s\u1ed1 th\u00f4ng s\u1ed1 c\u01a1 b\u1ea3n c\u1ee7a h\u1ec7 th\u1ed1ng che s\u00e1ng nh\u1eb1m kh\u1eafc phuc c\u00e1c t\u1ed3n t\u1ea1i tr\u00ean \u0111\u00e2y v\u00e0 n\u00e2ng cao hi\u1ec7u qu\u1ea3 s\u1eed d\u1ee5ng c\u1ee7a c\u00e1c NGH \u1edf n\u01b0\u1edbc ta l\u00e0 v\u1ea5n \u0111\u1ec1 c\u1ea5p thi\u1ebft.<\/p>\n

2. N\u1ed8I DUNG, V\u1eacT LI\u1ec6U V\u00c0 PH\u01af\u01a0NG PH\u00c1P NGHI\u00caN C\u01afU<\/b><\/p>\n

2.1. N\u1ed9i dung nghi\u00ean c\u1ee9u<\/b><\/p>\n

* Nghi\u00ean c\u1ee9u quy lu\u1eadt bi\u1ebfn \u0111\u1ed9ng c\u1ee7a c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng t\u1ef1 nhi\u00ean (ngo\u00e0i tr\u1eddi) theo th\u1eddi gian trong ng\u00e0y \u1edf c\u00e1c \u0111i\u1ec1u ki\u1ec7n th\u1eddi ti\u1ebft \u0111\u1eb7c tr\u01b0ng c\u1ee7a 2 m\u00f9a: m\u00f9a h\u00e8 v\u00e0 m\u00f9a \u0111\u00f4ng.<\/p>\n

* Nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t c\u01a1 l\u00fd c\u1ee7a v\u1eadt li\u1ec7u che s\u00e1ng ph\u1ed5 bi\u1ebfn cho c\u00e1c v\u01b0\u1eddn \u01b0\u01a1m c\u00e2y gi\u1ed1ng l\u00e2m n\u00f4ng nghi\u1ec7p<\/p>\n

– Quan h\u1ec7 gi\u1eefa t\u00ednh ch\u1ea5t che \u00e1nh s\u00e1ng v\u00e0 m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t c\u01a1 l\u00fd kh\u00e1c v\u00f3i y\u1ebfu t\u1ed1 s\u1eed dung<\/p>\n

– Quan h\u1ec7 gi\u1eefa t\u00ednh ch\u1ea5t che s\u00e1ng c\u1ee7a v\u1eadt li\u1ec7u che v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng t\u00e1c \u0111\u1ed9ng<\/p>\n

* Ch\u1ecdn lo\u1ea1i v\u1eadt li\u1ec7u che, x\u00e1c \u0111\u1ecbnh m\u1ed9t s\u1ed1 th\u00f4ng s\u1ed1 c\u01a1 b\u1ea3n c\u1ee7a h\u1ec7 th\u1ed1ng che s\u00e1ng v\u00e0 ch\u1ebf \u0111\u1ed9 che \u1edf c\u00e1c NGH theo y\u00eau c\u1ea7u c\u00f4ng ngh\u1ec7 gi\u00e2m hom c\u1ee7a c\u00e2y tr\u1ed3ng<\/p>\n

2.2. V\u1eadt li\u1ec7u nghi\u00ean c\u1ee9u <\/b><\/p>\n

a. V\u1eadt li\u1ec7u nghi\u00ean c\u1ee9u<\/b><\/p>\n

V\u1eadt li\u1ec7u che s\u00e1ng: l\u01b0\u1edbi che v\u01b0\u1eddn \u01b0\u01a1m (Trung Qu\u1ed1c, Th\u00e1i Lan), nilon trong su\u1ed1t (Vi\u1ec7t Nam), t\u1ea5m l\u1ee3p nh\u1ef1a composite\u00a0 m\u00e0u tr\u1eafng.<\/p>\n

b. Thi\u1ebft b\u1ecb nghi\u00ean c\u1ee9u<\/b><\/p>\n

S\u1eed d\u1ee5ng m\u00e1y \u0111o c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng k\u1ef9 thu\u1eadt s\u1ed1: Extech – 401025 (M\u1ef9), Tenmark (\u0110\u00e0i Loan), m\u00e1y t\u00ednh (Laptop) v\u00e0 ph\u1ea7n m\u1ec1m thu th\u1eadp, x\u1eed l\u00fd s\u1ed1 li\u1ec7u.<\/p>\n

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

Ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c nghi\u1ec7m,<\/i> g\u1ed3m:<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0 Th\u00ed nghi\u1ec7m \u0111o v\u00e0 x\u00e1c \u0111\u1ecbnh quy lu\u1eadt bi\u1ebfn \u0111\u1ed5i c\u1ee7a c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng ngo\u00e0i tr\u1eddi<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0 Th\u00ed nghi\u1ec7m x\u00e1c \u0111\u1ecbnh m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t c\u01a1 l\u00fd c\u1ee7a v\u1eadt li\u1ec7u che s\u00e1ng chuy\u00ean d\u1ee5ng<\/p>\n

M\u00f4 h\u00ecnh th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp t\u1ea1i Tr\u1ea1m nghi\u00ean c\u1ee9u Gi\u1ed1ng c\u00e2y r\u1eebng \u0110\u00e1 Ch\u00f4ng – Ba V\u00ec (thu\u1ed9c Trung t\u00e2m NC Gi\u1ed1ng c\u00e2y r\u1eebng – Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam) v\u1edbi c\u1ea5u tr\u00fac t\u01b0\u01a1ng t\u1ef1 nh\u00e0 l\u01b0\u1edbi gi\u00e2m hom trong s\u1ea3n xu\u1ea5t (h\u00ecnh 1) song c\u00e1c t\u1ea7ng l\u01b0\u1edbi che di d\u1ed9ng \u0111\u01b0\u1ee3c.<\/p>\n

\"15-03-28-NhaGH1\"<\/a><\/p>\n

C1- V\u1ecb tr\u00ed c\u1ea3m bi\u1ebfn \u0111o c\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng ngo\u00e0i tr\u1eddi A0<\/sub> (lux)<\/p>\n

C2- V\u1ecb tr\u00ed c\u1ea3m bi\u1ebfn \u0111o c\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng sau khi qua v\u1eadt li\u1ec7u che (l\u01b0\u1edbi, t\u1ea5m composite) A1<\/sub><\/p>\n

C3- V\u1ecb tr\u00ed c\u1ea3m bi\u1ebfn \u0111o c\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng trong v\u00f2m nilon (m\u1eb7t lu\u1ed1ng gi\u00e2m) A2<\/sub><\/p>\n

C\u00e1c c\u1ea3m bi\u1ebfn \u0111o c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c \u0111\u1eb7t vu\u00f4ng g\u00f3c v\u1edbi ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng t\u1ea1i v\u1ecb tr\u00ed \u0111\u1ea3m b\u1ea3o kh\u00f4ng c\u00f3 v\u1eadt c\u1ea3n che tia s\u00e1ng m\u1eb7t tr\u1eddi t\u00e1c \u0111\u1ed9ng v\u00e0o c\u1ea3m bi\u1ebfn.<\/p>\n

Ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd s\u1ed1 li\u1ec7u, x\u00e2y d\u1ef1ng m\u1ed9t s\u1ed1 \u0111\u1eb7c t\u00ednh<\/i> b\u1eb1ng \u00a0ph\u1ea7n m\u1ec1m Excel<\/p>\n

a. Th\u00ed nghi\u1ec7m x\u00e1c \u0111\u1ecbnh quy lu\u1eadt bi\u1ebfn \u0111\u1ed9ng c\u1ee7a c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng ngo\u00e0i tr\u1eddi.<\/b><\/p>\n

– M\u00f9a H\u00e8: khi n\u1eafng n\u00f3ng m\u1ea1nh kh\u00f4ng c\u00f3 m\u00e2y<\/p>\n

– M\u00f9a Thu\u00a0 khi tr\u1eddi n\u1eafng v\u00e0 kh\u00f4ng c\u00f3 m\u00e2y<\/p>\n

– M\u00f9a \u0110\u00f4ng: ng\u00e0y n\u1eafng v\u00e0 kh\u00f4 c\u00f3 s\u01b0\u01a1ng m\u00f9 bu\u1ed5i s\u00e1ng v\u00e0, cu\u1ed1i chi\u1ec1u<\/p>\n

– M\u00f9a Xu\u00e2n: ng\u00e0y l\u1ea1nh v\u00e0 \u1ea9m m\u00e2y m\u00f9 d\u00e0y \u0111\u1eb7c v\u00e0 m\u01b0a ph\u00f9n do gi\u00f3 m\u00f9a \u0110\u00f4ng B\u1eafc.<\/p>\n

\u1ede m\u1ed7i m\u00f9a, chia ra 3 tr\u1ea1ng th\u00e1i th\u1eddi ti\u1ebft \u0111\u1ec3 th\u00ed nghi\u1ec7m, g\u1ed3m: N\u1eafng kh\u00f4ng m\u00e2y ho\u1eb7c r\u1ea5t \u00edt m\u00e2y \/ N\u1eafng xen l\u1ea7n nhi\u1ec1u m\u00e2y ho\u1eb7c c\u00f3 m\u01b0a gi\u00f4ng \/ M\u01b0a v\u00e0 m\u00e2y m\u00f9 d\u00e0y \u0111\u1eb7c li\u00ean t\u1ee5c su\u1ed1t ng\u00e0y<\/p>\n

M\u1ed7i tr\u1ea1ng th\u00e1i th\u1eddi ti\u1ebft c\u1ee7a m\u1ed7i m\u00f9a \u0111\u01b0\u1ee3c th\u00ed nghi\u1ec7m l\u1eb7p 3 l\u1ea7n t\u01b0\u01a1ng\u00a0 \u1ee9ng v\u1edbi 3 ng\u00e0y g\u1ea7n nhau, m\u1ed7i l\u1ea7n th\u00ed nghi\u1ec7m t\u1eeb 7 gi\u1edd s\u00e1ng \u2013 5 gi\u1edd chi\u1ec1u, thu th\u1eadp s\u1ed1 li\u1ec7u c\u00e1ch nhau 5 ph\u00fat<\/p>\n

b. Th\u00ed nghi\u1ec7m x\u00e1c m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t c\u01a1 l\u00fd c\u1ee7a v\u1eadt li\u1ec7u che s\u00e1ng<\/b><\/p>\n

* Th\u00ed nghi\u1ec7m x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 co k\u00edch th\u01b0\u1edbc do n\u1eafng n\u00f3ng c\u1ee7a 5 l\u01b0\u1edbi che chuy\u00ean d\u1ee5ng ph\u1ed5 bi\u1ebfn cho v\u01b0\u1eddn \u01b0\u01a1m l\u00e2m n\u00f4ng nghi\u1ec7p (2 lo\u1ea1i l\u01b0\u1edbi Trung Qu\u1ed1c, 3 lo\u1ea1i l\u01b0\u1edbi Th\u00e1i Lan). C\u00e1c d\u1ea3i l\u01b0\u1edbi \u0111\u01b0\u1ee3c c\u0103ng d\u1ea3i tr\u00ean d\u00e0n d\u00e2y \u0111\u1ee1 b\u1eb1ng d\u00e2y nh\u1ef1a PP ch\u1ecbu l\u1ef1c \u0111\u1ec3 ph\u01a1i ngo\u00e0i tr\u1eddi trong th\u1eddi gian n\u1eafng n\u00f3ng nh\u1ea5t (th\u00e1ng 6\/2010), \u0111\u1ecbnh k\u1ef3 sau 4 \u2013 5 ng\u00e0y \u0111o l\u1ea1i k\u00edch th\u01b0\u1edbc c\u1ee7a d\u1ea3i l\u01b0\u1edbi<\/p>\n

* X\u00e1c \u0111\u1ecbnh t\u00ednh ch\u1ea5t che \u00e1nh s\u00e1ng c\u1ee7a v\u1eadt li\u1ec7u che 5 lo\u1ea1i l\u01b0\u1edbi che, t\u1ea5m l\u1ee3p composit, ni l\u00f4ng trong su\u1ed1t. M\u1ee9c \u0111\u1ed9 che s\u00e1ng c\u1ee7a m\u1ed7i lo\u1ea1i v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c \u0111\u1eb7c tr\u01b0ng b\u1edfi h\u1ec7 s\u1ed1 H =\u00a0 A1 <\/sub>\/ A2<\/sub><\/b><\/p>\n

H \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 h\u1ec7 s\u1ed1 che s\u00e1ng c\u1ee7a v\u1eadt li\u1ec7u. A1<\/sub> (lux) l\u00e0 c\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng t\u00e1c \u0111\u1ed9ng l\u00ean v\u1eadt li\u1ec7u che, A2 <\/sub>(lux) l\u00e0 c\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng sau khi qua l\u1edbp v\u1eadt li\u1ec7u che<\/p>\n

3-K\u1ebeT QU\u1ea2 NGHI\u00caN C\u1ee8U & TH\u1ea2O LU\u1eacN <\/b><\/p>\n

3.1. Nghi\u00ean c\u1ee9u quy lu\u1eadt bi\u1ebfn \u0111\u1ed9ng c\u1ee7a \u00e1nh s\u00e1ng ngo\u00e0i tr\u1eddi <\/b><\/p>\n

K\u1ebft qu\u1ea3 th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n tr\u00ean \u0111\u1ed3 th\u1ecb 1, cho th\u1ea5y c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng ngo\u00e0i tr\u1eddi t\u00e1c \u0111\u1ed9ng l\u00ean h\u1ec7 th\u1ed1ng che s\u00e1ng c\u1ee7a NGH bi\u1ebfn \u0111\u1ed5i r\u1ea5t ph\u1ee9c t\u1ea1p t\u00f9y thu\u1ed9c th\u1eddi \u0111i\u1ec3m trong ng\u00e0y, c\u00e1c ng\u00e0y trong m\u00f9a v\u00e0 c\u00e1c m\u00f9a trong n\u0103m.<\/p>\n

Trong ng\u00e0y, c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng ngo\u00e0i tr\u1eddi t\u0103ng d\u1ea7n v\u00e0 cao nh\u1ea5t v\u00e0o kho\u1ea3ng gi\u1eefa tr\u01b0a: (12 \u2013 12 gi\u1edd 30) r\u1ed3i l\u1ea1i gi\u1ea3m d\u1ea7n C\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng ngo\u00e0i tr\u1eddi c\u1ef1c \u0111\u1ea1i trong c\u00e1c ng\u00e0y n\u1eafng kh\u00f4ng m\u00e2y trong c\u00e1c m\u00f9a r\u1ea5t kh\u00e1c nhau: 130.000 – 140.000 lux (m\u00f9a h\u00e8), 85.000 \u2013 90.000 lux (m\u00f9a Thu), 40.000 \u2013 45.000 lux (m\u00f9a \u0110\u00f4ng). Khi n\u1eafng xen k\u1ebd m\u00e2y nhi\u1ec1u v\u00e0 m\u01b0a nh\u1ea5t l\u00e0 v\u00e0o m\u00f9a h\u00e8, c\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng ngo\u00e0i tr\u1eddi bi\u1ebfn \u0111\u1ed9ng m\u1ea1nh v\u00e0 b\u1ea5t th\u01b0\u1eddng kh\u00f4ng theo quy lu\u1eadt n\u00e0o. V\u00e0o cu\u1ed1i \u0111\u00f4ng v\u00e0 \u0111\u1ea7u xu\u00e2n, tr\u1eddi r\u1ea5t l\u1ea1nh, m\u00e2y m\u00f9 d\u00e0y \u0111\u1eb7c v\u00e0 m\u01b0a ph\u00f9n li\u00ean t\u1ee5c, c\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng ngo\u00e0i tr\u1eddi gi\u1ea3m r\u1ea5t th\u1ea5p, cao nh\u1ea5t ch\u1ec9 \u0111\u1ea1t kho\u1ea3ng 10.000 lux v\u00e0o gi\u1eefa tr\u01b0a.<\/p>\n

C\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng ngo\u00e0i tr\u1eddi (t\u00e1c \u0111\u1ed9ng l\u00ean h\u1ec7 th\u1ed1ng che s\u00e1ng NGH) trong nh\u1eefng ng\u00e0y n\u1eafng kh\u00f4ng c\u00f3 m\u00e2y ho\u1eb7c r\u1ea5t \u00edt m\u00e2y v\u00e0 nh\u1eefng ng\u00e0y m\u00e2y m\u00f9 d\u00e0y \u0111\u1eb7c trong c\u00e1c m\u00f9a c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 b\u1eb1ng c\u00e1c quy lu\u1eadt to\u00e1n h\u1ecdc b\u1eadc 2 v\u1edbi m\u1ee9c \u0111\u1ed9 ch\u00ednh x\u00e1c c\u00f3 th\u1ec3 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c (\u0111\u1ed3 th\u1ecb 1).<\/p>\n

\"15-03-28-NhaGH2\"<\/a><\/p>\n

3.2. <\/b>Nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t che s\u00e1ng v\u00e0 c\u01a1 l\u00fd kh\u00e1c c\u1ee7a v\u1eadt li\u1ec7u che s\u00e1ng <\/b><\/p>\n

3.2.1. Quan h\u1ec7 gi\u1eefa t\u00ednh ch\u1ea5t che s\u00e1ng v\u00e0 m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t c\u01a1 l\u00fd kh\u00e1c v\u00f3i y\u1ebfu t\u1ed1 s\u1eed dung<\/p>\n

* Quan h\u1ec7 gi\u0169a t\u00ednh ch\u1ea5t che s\u00e1ng c\u1ee7a nilon ph\u1ee7 v\u00f2m che v\u00e0 th\u1eddi gian s\u1eed d\u1ee5ng<\/i><\/p>\n

B\u1ea3ng\u00a0 1:\u00a0\u00a0 H\u1ec7 s\u1ed1 che s\u00e1ng c\u1ee7a ni lon ph\u1ee7 v\u00f2m che<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n

Th\u1eddi gian s\u1eed d\u1ee5ng<\/p>\n<\/td>\n

\n

H\u1ec7 s\u1ed1 che s\u00e1ng<\/p>\n<\/td>\n

\n

Ghi ch\u00fa<\/p>\n<\/td>\n<\/tr>\n

\n

K\u00fd hi\u1ec7u<\/p>\n<\/td>\n

\n

Gi\u00e1 tr\u1ecb<\/p>\n<\/td>\n

<\/td>\n<\/tr>\n
Nilon m\u1edbi<\/td>\n\n

Hn<\/p>\n<\/td>\n

\n

1,450<\/p>\n<\/td>\n

\n

N\u0103m s\u1eed d\u1ee5ng th\u1ee9 nh\u1ea5t<\/p>\n<\/td>\n<\/tr>\n

Nilon sau 1 l\u1ea7n s\u1eed d\u1ee5ng (sau 1 \u0111\u1ee3t gi\u00e2m hom)<\/td>\n\n

Hn1<\/sub><\/p>\n<\/td>\n

\n

1,547<\/p>\n<\/td>\n<\/tr>\n

Nilon sau 2 l\u1ea7n s\u1eed d\u1ee5ng<\/td>\n\n

Hn2<\/sub><\/p>\n<\/td>\n

\n

1,650<\/p>\n<\/td>\n<\/tr>\n

Nilon sau 3 l\u1ea7n s\u1eed d\u1ee5ng<\/td>\n\n

Hn3<\/sub><\/p>\n<\/td>\n

\n

1,840<\/p>\n<\/td>\n<\/tr>\n

Nilon sau 4 l\u1ea7n s\u1eed d\u1ee5ng<\/td>\n\n

Hn4<\/sub><\/p>\n<\/td>\n

\n

1,980<\/p>\n<\/td>\n<\/tr>\n

Nilon sau 5 l\u1ea7n s\u1eed d\u1ee5ng<\/td>\n\n

Hn5<\/sub><\/p>\n<\/td>\n

\n

2,190<\/p>\n<\/td>\n<\/tr>\n

Nilon sau 6 l\u1ea7n s\u1eed d\u1ee5ng<\/td>\n\n

Hn6<\/sub><\/p>\n<\/td>\n

\n

2,490<\/p>\n<\/td>\n

\n

N\u0103m s\u1eed d\u1ee5ng th\u1ee9 2<\/p>\n<\/td>\n<\/tr>\n

Nilon sau 7 l\u1ea7n s\u1eed d\u1ee5ng<\/td>\n\n

Hn7<\/sub><\/p>\n<\/td>\n

\n

2,770<\/p>\n<\/td>\n<\/tr>\n

Nilon sau 8 l\u1ea7n s\u1eed d\u1ee5ng<\/td>\n\n

Hn8<\/sub><\/p>\n<\/td>\n

\n

3,310<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u00a0(K\u1ebft qu\u1ea3 th\u00ed nghi\u1ec7m \u1edf d\u1ea3i c\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng t\u00e1c \u0111\u1ed9ng l\u00ean v\u00f2m che nilon A1 = 12.000 \u2013 15.000 lux)<\/p>\n

Nilon \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ee7 v\u00f2m che lu\u1ed1ng gi\u00e2m hom do Vi\u1ec7t Nam s\u1ea3n xu\u1ea5t, s\u1eb5n c\u00f3 tr\u00ean th\u1ecb tr\u01b0\u1eddng. Trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng, nilon b\u1ecb \u1ed1 b\u1ea9n do b\u1ee5i \u0111\u1ea5t, r\u00eau m\u1ed1c, g\u1ec9 s\u1eaft t\u1eeb khung v\u00f2m che. M\u1ee9c \u1ed1 b\u1ea9n t\u0103ng c\u00e0ng m\u1ea1nh theo th\u1eddi gian l\u00e0m t\u0103ng h\u1ec7 s\u1ed1 che s\u00e1ng c\u1ee7a nilon (b\u1ea3ng 1). Sau m\u1ed7i \u0111\u1ee3t gi\u00e2m hom, c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t th\u01b0\u1eddng ph\u1ea3i phun n\u01b0\u1edbc r\u1eeda b\u1ee5i \u0111\u1ea5t b\u00e1m tr\u00ean nilon, song r\u1ea5t kh\u00f3 t\u1ea9y b\u1ecf g\u1ec9 s\u1eaft.. \u1ede v\u00f9ng \u0110\u00f4ng B\u1eafc B\u1ed9, n\u1ebfu s\u1eed d\u1ee5ng \u0111\u00fang k\u1ef9 thu\u1eadt, t\u1ea9y r\u1eeda \u0111\u1ecbnh k\u1ef3 th\u00ec c\u00f3 th\u1ec3 d\u00f9ng lo\u1ea1i nilon n\u00e0y \u0111\u01b0\u1ee3c t\u1ed1i \u0111a 8 l\u1ea7n gi\u00e2m hom c\u00e1c lo\u00e0i m\u1ecdc nhanh (t\u01b0\u01a1ng \u0111\u01b0\u01a1ng 8 th\u00e1ng) v\u00e0 khi \u0111\u00f3 h\u1ec7 s\u1ed1 che s\u00e1ng c\u1ee7a nilon l\u00ean t\u1edbi 3.31 g\u1ea5p 2,2 l\u1ea7n so v\u1edbi h\u1ec7 s\u1ed1 che s\u00e1ng c\u1ee7a nilon m\u1edbi. (1,45)<\/p>\n

* Quan h\u1ec7 gi\u0169a t\u00ednh ch\u1ea5t che s\u00e1ng c\u1ee7a t\u1ea5m l\u1ee3p nh\u1ef1a composite v\u00e0 th\u1eddi gian s\u1eed d\u1ee5ng<\/i><\/p>\n

\"15-03-28-NhaGH3\"<\/a><\/p>\n

Theo \u0111\u1ed3 h\u1ecb 2, s\u1ed1 n\u0103m \u0111\u00e3 s\u1eed dung c\u00e0ng l\u1edbn th\u00ec h\u1ec7 s\u1ed1 che s\u00e1ng c\u1ee7a t\u1ea5m l\u1ee3p nh\u1ef1a composite t\u0103ng v\u00f3i t\u1ed1c \u0111\u1ed9 c\u00e0ng l\u1edbn. Khi t\u1ea9y r\u1eeda \u0111\u1ecbnh k\u1ef3 t\u1ea5m composite c\u00f3 l\u00e0m gi\u1ea3m h\u1ec7 s\u1ed1 che s\u00e1ng song kh\u00f4ng \u0111\u00e1ng k\u1ec3<\/p>\n

Sau 4 n\u0103m s\u1eed d\u1ee5ng, m\u1eb7c d\u00f9 \u0111\u01b0\u1ee3c t\u1ea9y r\u1eeda h\u00e0ng n\u0103m h\u1ec7 s\u1ed1 che c\u1ee7a t\u1ea5m nh\u1ef1a composite v\u1eabn l\u00ean t\u1edbi 9.76. Nh\u01b0 v\u1eady: v\u00e0o gi\u0169a Thu (th\u00e1ng 9), c\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng ngo\u00e0i tr\u1eddi (A0<\/sub>) cao nh\u1ea5t 75.000 \u00f7 90.000 lux th\u00ec c\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng trong NGH (d\u01b0\u1edbi m\u00e1i che, tr\u00ean v\u00f2m nilon) ch\u1ec9 c\u00f2n 7.900 \u00f7 9.500 lux v\u00e0 trong MTGH (trong v\u00f2m che nilon m\u1edbi) 5.600 \u00f7 6.800 lux. Ngh\u0129a l\u00e0 trong v\u1ee5 Thu n\u1ebfu n\u1eafng li\u00ean t\u1ee5c v\u00e0 s\u1eed d\u1ee5ng nilon c\u00f2n r\u1ea5t m\u1edbi, m\u1edbi c\u00f3 th\u1ec3 gi\u00e2m hom \u0111\u01b0\u1ee3c c\u00e1c lo\u00e0i c\u00e2y \u01b0a s\u00e1ng.<\/p>\n

* \u0110\u1ed9 co do n\u1eafng n\u00f3ng c\u1ee7a l\u01b0\u1edbi che chuy\u00ean d\u1ee5ng<\/i><\/p>\n

K\u1ebft qu\u1ea3 t\u1ea1i b\u1ea3ng 4 cho th\u1ea5y, l\u01b0\u1edbi Trung Qu\u1ed1c kh\u00f4ng \u0111\u1ed3ng nh\u1ea5t v\u1ec1 chi\u1ec1u r\u1ed9ng d\u1ea3i l\u01b0\u1edbi, \u0111\u1ed9 co chi\u1ec1u d\u00e0i v\u00e0 chi\u1ec1u r\u1ed9ng c\u1ee7a d\u1ea3i l\u01b0\u1edbi l\u00f3n h\u01a1n nhi\u1ec1u so v\u1edbi c\u00e1c lo\u1ea1i l\u01b0\u1edbi Th\u00e1i lan. L\u01b0\u1edbi c\u00e0ng d\u00e0y th\u00ec \u0111\u1ed9 co do n\u1eafng n\u00f3ng c\u00e0ng l\u1edbn. C\u00e1c lo\u1ea1i l\u01b0\u1edbi Th\u00e1i Lan \u00edt b\u1ecb co chi\u1ec1u d\u00e0i v\u00e0 h\u1ea7u nh\u01b0 kh\u00f4ng b\u1ecb co chi\u1ec1u r\u1ed9ng<\/p>\n

B\u1ea3ng 2:\u00a0\u00a0\u00a0 M\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t c\u01a1 l\u00fd c\u1ee7a l\u01b0\u1edbi che chuy\u00ean d\u1ee5ng<\/p>\n\n\n\n\n\n\n
\n

Th\u00f4ng s\u1ed1<\/b><\/p>\n<\/td>\n

\n

L\u01b0\u1edbi \u0111en T.Qu\u1ed1c m\u1ecfng<\/p>\n

\u00a0<\/b><\/p>\n<\/td>\n

\n

L\u01b0\u1edbi \u0111en T.Qu\u1ed1c d\u00e0y<\/p>\n

\u00a0<\/b><\/p>\n<\/td>\n

\n

L\u01b0\u1edbi \u0111en Th\u00e1i lan 50% (L1)<\/b><\/p>\n<\/td>\n

\n

L\u01b0\u1edbi \u0111en Th\u00e1i lan 60% (L2)<\/b><\/p>\n<\/td>\n

\n

L\u01b0\u1edbi \u0111en Th\u00e1i lan 70%<\/p>\n

(L3)<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

B\u1ec1 r\u1ed9ng (cm)<\/p>\n<\/td>\n

\n

170 \u2013 195<\/p>\n<\/td>\n

\n

180 \u2013 195<\/p>\n<\/td>\n

\n

200<\/p>\n<\/td>\n

\n

200<\/p>\n<\/td>\n

\n

200<\/p>\n<\/td>\n<\/tr>\n

\n

\u0110\u1ed9 co chi\u1ec1u d\u00e0i do n\u1eafng n\u00f3ng (mm\/ md\u00e0i)<\/p>\n<\/td>\n

\n

60<\/p>\n

\n<\/td>\n

\n

85<\/p>\n<\/td>\n

\n

20<\/p>\n<\/td>\n

\n

25<\/p>\n<\/td>\n

\n

30<\/p>\n<\/td>\n<\/tr>\n

\n

\u0110\u1ed9 co chi\u1ec1u r\u1ed9ng do n\u1eafng n\u00f3ng (mm\/ md\u00e0i)<\/p>\n<\/td>\n

\n

20<\/p>\n<\/td>\n

\n

40<\/p>\n<\/td>\n

\n

10<\/p>\n<\/td>\n

\n

10<\/p>\n<\/td>\n

\n

10<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

V\u1ec1 \u0111\u1ed9 b\u1ec1n t\u1ef1 nhi\u00ean c\u1ee7a 5 lo\u1ea1i l\u01b0\u1edbi n\u00e0y, qua kh\u1ea3o s\u00e1t \u1edf m\u1ed9t s\u1ed1 c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t [5] cho th\u1ea5y:<\/p>\n

– Tu\u1ed5i th\u1ecd c\u1ee7a l\u01b0\u1edbi Trung Qu\u1ed1c r\u1ea5t th\u1ea5p \u0111\u1eb7c bi\u1ec7t khi s\u1eed d\u1ee5ng trong \u0111i\u1ec1u ki\u1ec7n kh\u00ed h\u1eadu gi\u00f3 L\u00e0o, l\u01b0\u1edbi r\u1ea5t nhanh b\u1ecb m\u1ee5c n\u00e1t t\u1ef1 nhi\u1ec7n, tu\u1ed5i th\u1ecd ch\u1ec9 t\u1eeb 6 \u2013 8 th\u00e1ng, trong v\u00f9ng \u0110\u00f4ng B\u1eafc B\u1ed9 (c\u00f3 gi\u00f3 m\u00f9a \u0110\u00f4ng B\u1eafc), tu\u1ed5i th\u1ecd trung b\u00ecnh 10 \u2013 12 th\u00e1ng. L\u01b0\u1edbi c\u00e0ng d\u00e0y, trong m\u00f9a n\u1eafng n\u00f3ng c\u00e0ng b\u1ecb co k\u00edch th\u01b0\u1edbc d\u1eabn t\u1edbi r\u00e1ch n\u00e1t<\/p>\n

– L\u01b0\u1edbi Th\u00e1i Lan sau h\u01a1n 4 n\u0103m s\u1eed d\u1ee5ng trong v\u00f9ng gi\u00f3 L\u00e0o v\u1eabn \u0111\u1ea3m b\u1ea3o t\u1ed1t.<\/p>\n

3.2.2. M\u1ed1i quan h\u1ec7 gi\u1eefa t\u00ednh ch\u1ea5t che s\u00e1ng c\u1ee7a v\u1eadt li\u1ec7u che v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng t\u00e1c \u0111\u1ed9ng<\/p>\n

* Nilon ph\u1ee7 v\u00f2m che lu\u1ed1ng gi\u00e2m hom<\/i><\/b><\/p>\n

Theo k\u1ebft qu\u1ea3 tr\u00ean \u0111\u1ed3 th\u1ecb 3, h\u1ec7 s\u1ed1 che s\u00e1ng c\u1ee7a nilon t\u0103ng theo c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng t\u00e1c \u0111\u1ed9ng, m\u00fac gia t\u0103ng ph\u1ee5 thu\u1ed9c v\u00e0o t\u00ecnh tr\u1ea1ng c\u1ee7a nilon, nilon \u0111\u00e3 s\u1eed d\u1ee5ng c\u00e0ng nhi\u1ec1u l\u1ea7n, m\u1ee9c gia t\u0103ng c\u00e0ng l\u1edbn. Quan h\u1ec7 n\u00e0y c\u00f3 th\u1ec3 m\u00f4 t\u1ea3 b\u1eb1ng ph\u01b0\u01a1ng tr\u00ecnh to\u00e1n h\u1ecdc b\u1eadc 1.<\/p>\n

\"15-03-28-NhaGH4\"<\/a><\/p>\n

* L\u01b0\u1edbi che s\u00e1ng chuy\u00ean d\u1ee5ng<\/i><\/b><\/p>\n

K\u1ebft qu\u1ea3 th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 tr\u00ean \u0111\u1ed3 th\u1ecb 4 cho th\u1ea5y l\u01b0\u1edbi che c\u00e0ng d\u00e0y (t\u1ef7 l\u1ec7 che s\u00e1ng l\u1edbn) th\u00ec h\u1ec7 s\u1ed1 che s\u00e1ng c\u00e0ng cao. H\u00ea s\u1ed1 c\u1ea3n s\u00e1ng c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i l\u01b0\u1edbi che \u0111\u1ec1u gi\u1ea3m khi c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng t\u00e1c \u0111\u1ed9ng l\u00ean l\u01b0\u1edbi t\u0103ng l\u00ean. M\u1ed1i quan h\u1ec7 gi\u1eefa h\u1ec7 s\u1ed1 che s\u00e1ng c\u1ee7a m\u1ed7i lo\u1ea1i l\u01b0\u1edbi v\u00e0 t\u1ed5 h\u1ee3p 2 t\u1ea7ng l\u01b0\u1edbi che v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng t\u00e1c \u0111\u1ed9ng \u0111\u1ec1u c\u00f3 th\u1ec3 m\u00f4 t\u1ea3 b\u1eb1ng ph\u01b0\u01a1ng tr\u00ecnh to\u00e1n h\u1ecdc b\u1eadc nh\u1ea5t v\u1edbi h\u1ec7 s\u1ed1 t\u01b0\u01a1ng quan kh\u00e1 cao.<\/p>\n

N\u1ebfu h\u1ec7 th\u1ed1ng che s\u00e1ng ph\u00eda tr\u00ean NGH c\u00f3 nhi\u1ec1u t\u1ea7ng che th\u00ec h\u1ec7 s\u1ed1 che s\u00e1ng c\u1ee7a to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng nh\u1ecf h\u01a1n t\u00edch s\u1ed1 h\u1ec7 s\u1ed1 che s\u00e1ng c\u1ee7a 2 l\u01b0\u1edbi \u1edf c\u00f9ng gi\u00e1 r\u1ecb c\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng t\u00e1c \u0111\u1ed9ng<\/p>\n

\"15-03-28-NhaGH5\"<\/a><\/p>\n

3.3- <\/b>C<\/b>h\u1ecdn lo\u1ea1i v\u1eadt li\u1ec7u che, x\u00e1c \u0111\u1ecbnh m\u1ed9t s\u1ed1 th\u00f4ng s\u1ed1 c\u01a1 b\u1ea3n c\u1ee7a h\u1ec7 th\u1ed1ng che s\u00e1ng v\u00e0 ch\u1ebf \u0111\u1ed9 che \u1edf c\u00e1c NGH theo y\u00eau c\u1ea7u c\u00f4ng ngh\u1ec7 gi\u00e2m hom c\u1ee7a c\u00e2y tr\u1ed3ng<\/b><\/p>\n

3.3.1- Ch\u1ecdn v\u1eadt li\u1ec7u che s\u00e1ng th\u00edch h\u1ecdp cho c\u00e1c NGH l\u00e2m nghi\u1ec7p \u1edf Vi\u1ec7t Nam<\/p>\n

Vi\u1ec7t Nam trong v\u00f9ng nhi\u1ec7t \u0111\u1edbi, c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng v\u00e0 n\u0103ng l\u01b0\u1ee3ng b\u1ee9c x\u1ea1 m\u1eb7t tr\u1eddi r\u1ea5t cao g\u00e2y n\u00ean hi\u1ec7u \u1ee9ng nh\u00e0 k\u00ednh r\u1ea5t m\u1ea1nh, v\u00ec v\u1eady s\u1eed d\u1ee5ng nh\u00e0 k\u00ednh v\u00e0o s\u1ea3n xu\u1ea5t gi\u1ed1ng c\u00e2y l\u00e2m nghi\u1ec7p s\u1ebd kh\u00f4ng hi\u1ec7u qu\u1ea3 trong khi m\u00f9a gi\u00e2m hom \u0111a s\u1ed1 c\u00e1c lo\u00e0i c\u00e2y l\u00e0 m\u00f9a h\u00e8. Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i nh\u00e0 l\u01b0\u1edbi v\u1edbi c\u00e1c lu\u1ed1ng gi\u00e2m c\u00f3 v\u00f2m che nilon ri\u00eang bi\u1ec7t \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u00fang minh l\u00e0 hi\u1ec7u qu\u1ea3 h\u01a1n nh\u00e0 k\u00ednh kh\u00f4ng ch\u1ec9 do gi\u00e1 \u0111\u1ea7u t\u01b0 th\u1ea5p m\u00e0 t\u1ef7 l\u1ec7 hom ra r\u1ec5 cao h\u01a1n nhi\u1ec1u<\/p>\n

T\u1eeb k\u1ebft qu\u1ea3 tr\u00ean d\u00e2y cho th\u1ea5y:<\/p>\n

+ Kh\u00f4ng n\u00ean s\u1eed d\u1ee5ng k\u00ednh, nilon trong su\u1ed1t \u0111\u1ec3 che m\u00e1i v\u00e0 v\u00e1ch c\u1ee7a NGH v\u00ec hi\u1ec7u \u1ee9ng nh\u00e0 k\u00ednh qu\u00e1 m\u1ea1nh. Lo\u1ea1i v\u1eadt li\u1ec7u compoite s\u1eb5n c\u00f3 trong n\u01b0\u1edbc, gi\u00e1 th\u1ea5p h\u01a1n nhi\u1ec1u so v\u1edbi k\u00ednh, nh\u1eb9, ch\u1ecbu \u0111\u01b0\u1ee3c m\u01b0a n\u1eafng v\u00e0 va \u0111\u1eadp c\u01a1 h\u1ecdc, m\u01b0a \u0111\u00e1 nh\u01b0ng r\u1ea5t nhanh b\u1ecb \u1ed1 b\u1ea9n v\u00e0 r\u1ea5t kh\u00f3 t\u1ea9y r\u1eeda, v\u00ec th\u1ebf ch\u1ec9 n\u00ean l\u1eafp \u0111\u1eb7t \u1edf v\u00e1ch che gi\u00f3 NGH d\u01b0\u1edbi d\u1ea1ng t\u1ea5m r\u1eddi di \u0111\u1ed9ng \u0111\u1ec3 t\u0103ng kh\u1ea3 n\u0103ng th\u00f4ng gi\u00f3 t\u1ef1 nhi\u00ean gi\u1ea3m nhi\u1ec7t \u0111\u1ed9 trong nh\u00e0 khi n\u1eafng n\u00f3ng v\u00e0 d\u1ec5 t\u1ea9y r\u1eeda.<\/p>\n

+ Lo\u1ea1i nilon ph\u1ee7 v\u00f2m che lu\u1ed1ng gi\u00e2m s\u1eb5n c\u00f3 trong n\u01b0\u1edbc, \u0111\u1ea3m b\u1ea3o t\u00ednh ch\u1ea5t che v\u00e0 l\u00e0m \u0111\u1ec1u \u00e1nh s\u00e1ng, gi\u1eef \u1ea9m trong MTGH, ho\u00e0n to\u00e0n ph\u00f9 h\u1ee3p v\u1edbi c\u00f4ng ngh\u1ec7 gi\u00e2m hom c\u00e2y l\u00e2m nghi\u1ec7p. Tuy \u0111\u1ed9 b\u1ec1n th\u1ea5p, nhanh \u1ed1 b\u1ea9n trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng song t\u1ea5m ph\u1ee7 \u1edf d\u01b0\u1edbi th\u1ea5p, d\u1ec5 th\u00e1o r\u1eddi \u0111\u1ec3 t\u1ea9y r\u1ee7a n\u00ean t\u00f9y \u0111i\u1ec1u ki\u1ec7n th\u1eddi ti\u1ebft, k\u1ebft c\u1ea5u k\u1ef9 thu\u1eadt c\u1ee7a h\u1ec7 th\u1ed1ng che s\u00e1ng v\u00e0 lo\u00e0i c\u00e2y \u0111\u1ec3 s\u1eed d\u1ee5ng<\/p>\n

+ C\u00e1c lo\u1ea1i l\u01b0\u1edbi Trung Qu\u1ed1c v\u1edbi gi\u00e1 th\u1ecb tr\u01b0\u1eddng ch\u1ec9 b\u1eb1ng 50% l\u01b0\u1edbi Th\u00e1i Lan nh\u01b0ng k\u00edch th\u01b0\u1edbc v\u00e0 t\u1ef7 l\u1ec7 che kh\u00f4ng \u0111\u1ec1u v\u00e0 kh\u00f4ng \u1ed5n \u0111\u1ecbnh, \u0111\u1ed9 co do n\u1eafng n\u00f3ng r\u1ea5t l\u1edbn, \u0111\u1ed9 b\u1ec1n r\u1ea5t th\u1ea5p (nh\u1ea5t l\u00e0 lo\u1ea1i l\u01b0\u1edbi \u0111en d\u00e0y) n\u00ean ch\u1ec9 th\u00edch h\u1ee3p cho c\u00e1c v\u01b0\u1eddn \u01b0\u01a1m t\u1ea1m th\u1eddi quy m\u00f4 nh\u1ecf \u1edf c\u00e1c v\u00f9ng \u00edt n\u1eafng n\u00f3ng, \u00edt gi\u00f3 m\u1ea1nh, kh\u00f4ng c\u00f3 gi\u00f3 L\u00e0o, kh\u00f4ng th\u00edch h\u1ee3p cho c\u00e1c NGH quy m\u00f4 c\u00f4ng nghi\u1ec7p.<\/p>\n

+ L\u01b0\u1edbi Th\u00e1i Lan \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t theo ti\u00eau chu\u1ea9n, \u0111\u1ed3ng nh\u1ea5t v\u00e0 \u00edt b\u1ecb co k\u00edch th\u01b0\u1edbc do n\u1eafng n\u00f3ng, c\u00f3 \u0111\u1ed9 b\u1ec1n t\u1ef1 nhi\u00ean cao n\u00ean r\u1ea5t ph\u00f9 h\u1ee3p cho c\u00e1c h\u1ec7 th\u1ed1ng che s\u00e1ng c\u1ee7a c\u00e1c NGH theo k\u1ebft c\u1ea5u m\u00f4 \u0111un c\u00f4ng nghi\u1ec7p v\u1edbi c\u00e1c t\u1ea7ng (l\u1edbp) che \u0111\u01b0\u1ee3c \u0111\u00f3ng m\u1edf b\u1eb1ng c\u01a1 gi\u1edbi v\u00e0 t\u1ef1 \u0111\u1ed9ng h\u00f3a \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c nhi\u1ec1u m\u1ee9c che s\u00e1ng theo y\u00eau c\u1ea7u c\u1ee7a c\u00e2y tr\u1ed3ng<\/p>\n

3.3.2- X\u00e1c \u0111\u1ecbnh m\u1ed9t s\u1ed1 th\u00f4ng s\u1ed1 c\u01a1 b\u1ea3n c\u1ee7a h\u1ec7 th\u1ed1ng che s\u00e1ng v\u00e0 ch\u1ebf \u0111\u1ed9 che \u1edf c\u00e1c NGH theo y\u00eau c\u1ea7u c\u00f4ng ngh\u1ec7 gi\u00e2m hom c\u1ee7a c\u00e2y tr\u1ed3ng<\/p>\n

Th\u00f4ng s\u1ed1 c\u01a1 b\u1ea3n nh\u1ea5t c\u1ee7a h\u1ec7 th\u1ed1ng che s\u00e1ng NGH l\u00e0m co s\u1edf cho thi\u1ebft k\u1ebf, g\u1ed3m:<\/i><\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 H\u1ec7 s\u1ed1 che s\u00e1ng l\u1edbn nh\u1ea5t c\u1ee7a h\u1ec7 th\u1ed1ng che<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 S\u1ed1 t\u1ea7ng che, l\u1ecdai v\u1eadt li\u1ec7u che cho m\u1ed7i t\u1ea7ng<\/p>\n

C\u01a1 s\u1edf \u00a0t\u00ednh to\u00e1n v\u00e0 l\u1ef1a ch\u1ecdn:<\/i><\/p>\n

– Kho\u1ea3ng c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng trong MTGH ( t\u1ed1i \u0111a v\u00e0 t\u1ed1i thi\u1ec3u) c\u1ea7n thi\u1ebft cho gi\u00e2m hom<\/p>\n

– \u0110\u1eb7c t\u00ednh di\u1ec5n bi\u1ebfn c\u1ee7a c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng ngo\u00e0i tr\u1eddi t\u00e1c \u0111\u1ed9ng l\u00ean h\u1ec7 th\u1ed1ng che s\u00e1ng NGH trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n th\u1eddi ti\u1ebft \u0111\u1eb7c tr\u01b0ng \u1edf c\u00e1c m\u00f9a v\u1ee5<\/p>\n

– Lo\u1ea1i v\u1eadt li\u1ec7u che s\u00e1ng \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn v\u00e0 h\u1ec7 s\u1ed1 che s\u00e1ng t\u01b0\u01a1ng \u1ee9ng<\/p>\n

* X\u00e1c \u0111\u1ecbnh th\u00f4ng s\u1ed1 c\u01a1 b\u1ea3n c\u1ee7a h\u1ec7 th\u1ed1ng che s\u00e1ng NGH<\/i><\/b><\/p>\n

H\u1ec7 th\u1ed1ng che s\u00e1ng c\u1ee7a NGH \u0111\u01b0\u1ee3c ch\u1ecdn t\u00ednh to\u00e1n t\u01b0\u01a1ng t\u1ef1 m\u00f4 h\u00ecnh th\u00ed nghi\u1ec7m (h\u00ecnh 1)<\/p>\n

A2 min <\/sub>\u00f7 A2 max<\/sub> l\u00e0 d\u1ea3i c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng cho ph\u00e9p trong v\u00f2m che nilon khi gi\u00e2m hom lo\u00e0i c\u00e2y c\u1ee5 th\u1ec3 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o cho qu\u00e1 tr\u00ecnh ra r\u1ec5 v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a hom gi\u00e2m \u0111\u01b0\u1ee3c b\u00ecnh th\u01b0\u1eddng, \u0111\u1ea1t t\u1ef7 l\u1ec7 hom ra r\u1ec5 t\u1ed1i thi\u1ec3u theo y\u00eau c\u1ea7u l\u00e2m sinh<\/p>\n

HL<\/sub> \u2013 h\u1ec7 s\u1ed1 che s\u00e1ng c\u1ee7a t\u1ed5 h\u1ee3p c\u00e1c t\u1ea7ng l\u01b0\u1edbi che ph\u00eda tr\u00ean c\u00e1c lu\u1ed1ng gi\u00e2m<\/p>\n

Hn \u2013 h\u1ec7 s\u1ed1 che s\u00e1ng c\u1ee7a nilon ph\u1ee7 v\u00f2m che lu\u1ed1ng<\/p>\n

HT<\/sub> \u2013 h\u1ec7 s\u1ed1 che s\u00e1ng c\u1ee7a to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng che c\u1ee7a NGH (g\u1ed3m c\u00e1c t\u1ea7ng l\u01b0\u1edbi che ph\u00eda tr\u00ean v\u00e0 v\u00f2m nilon che lu\u1ed1ng): HT<\/sub> =\u00a0 HL<\/sub>* Hn\u00a0 =\u00a0 A0<\/sub> \/ A2\u00a0 <\/sub>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0(1)<\/p>\n

H\u1ec7 th\u1ed1ng che c\u1ee7a NGH c\u1ea7n ph\u1ea3i t\u1ea1o \u0111\u01b0\u1ee3c c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng t\u1ef1 nhi\u00ean trong v\u00f2m nilon trong kho\u1ea3ng\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0A2 mix <\/sub>\u00a0\u2264\u00a0 A2<\/sub> = (A0<\/sub> \/ HT<\/sub> ) \u2264\u00a0 A2 max\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/sub>(2)<\/p>\n

H\u00ea th\u1ed1ng che s\u00e1ng c\u1ea7n c\u00f3 h\u1ec7 s\u1ed1 che t\u1ed1i \u0111a HTmax<\/sub> \u1ee9ng v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng c\u1ef1c \u0111\u1ea1i A0max <\/sub>trong m\u00f9a h\u00e8:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 HTmax\u00a0 <\/sub>= A0 max<\/sub> \/ A2 max\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/sub>(3)<\/p>\n

C\u0103n c\u1ee9 gi\u00e1 tr\u1ecb h\u1ec7 s\u1ed1 che s\u00e1ng c\u1ee7a c\u00e1c lo\u1ea1i l\u01b0\u1edbi che, t\u1ed5 h\u1ee3p nhi\u1ec1u t\u1ea7ng l\u01b0\u1edbi che v\u00e0 nilon \u0111\u1ec3 l\u1ef1a ch\u1ecdn lo\u1ea1i l\u01b0\u1edbi v\u00e0 s\u1ed1 t\u1ea7ng che t\u1ed1i \u0111a c\u1ee7a h\u1ec7 th\u1ed1ng che ph\u00eda tr\u00ean c\u00e1c lu\u1ed1ng gi\u00e2m hom<\/p>\n

* X\u00e1c \u0111\u1ecbnh ch\u1ebf \u0111\u1ed9 che s\u00e1ng trong NGH theo y\u00eau c\u1ea7u c\u00f4ng ngh\u1ec7 gi\u00e2m hom<\/i><\/b><\/p>\n

C\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng trong v\u00f2m nilon che lu\u1ed1ng gi\u00e2m hom \u0111\u01b0\u1ee3c t\u00ednh theo:<\/p>\n

A2<\/sub>\u00a0 = A0<\/sub> \/ (HL<\/sub>* Hn )\u00a0 = y1<\/sub> \/ ( y2<\/sub> * y3 <\/sub>)\u00a0\u00a0\u00a0 (4)<\/p>\n

y1 <\/sub>– H\u00e0m m\u00f4 t\u1ea3 di\u1ec5n bi\u1ebfn c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng ngo\u00e0i tr\u1eddi trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n th\u1eddi ti\u1ebft \u0111\u1eb7c tr\u01b0ng \u1edf m\u1ed7i m\u00f9a v\u1ee5 (\u0111\u1ed3 th\u1ecb 1):\u00a0\u00a0\u00a0\u00a0\u00a0 y1<\/sub> = A0<\/sub>\u00a0 = f1 <\/sub>(t)\u00a0 = a1 <\/sub>t2<\/sup> + b1 <\/sub>t + c1<\/sub>\u00a0\u00a0\u00a0 (5)<\/p>\n

y2 <\/sub>– H\u00e0m m\u00f4 t\u1ea3 quan h\u1ec7 ph\u1ee5 thu\u1ed9c gi\u1eefa h\u1ec7 s\u1ed1 che s\u00e1ng c\u1ee7a l\u01b0\u1edbi che ho\u1eb7c t\u1ed5 h\u1ee3p c\u1ee7a nhi\u1ec1u t\u1ea7ng l\u01b0\u1edbi che ph\u00eda tr\u00ean c\u00e1c lu\u1ed1ng gi\u00e2m hom v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng ngo\u00e0i tr\u1eddi<\/p>\n

y2<\/sub> = HL<\/sub> =\u00a0 f2<\/sub> (A0<\/sub>) = a2<\/sub> y1<\/sub> + b2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/sub>(6)<\/p>\n

y3 <\/sub>– H\u00e0m m\u00f4 t\u1ea3 quan h\u1ec7 ph\u1ee5 thu\u1ed9c gi\u1eefa h\u1ec7 s\u1ed1 che s\u00e1ng c\u1ee7a nilon che lu\u1ed1ng gi\u00e2m hom v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng trong nh\u00e0 gi\u00e2m hom: y3<\/sub> = Hn =\u00a0 f3<\/sub> (A1<\/sub>) = a3<\/sub> ( y1 <\/sub>\/ y2<\/sub> ) + b3\u00a0\u00a0 <\/sub>(7)<\/p>\n

Vi\u1ec7c ch\u1ecdn c\u00e1c lo\u1ea1i l\u01b0\u1edbi che, nilon ph\u1ee7 v\u00f2m che, k\u1ebft c\u1ea5u h\u1ec7 th\u1ed1ng l\u01b0\u1edbi che ph\u1ea3i \u0111\u1ea3m b\u1ea3o \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c c\u00e1c m\u00fac che s\u00e1ng t\u00f9y thu\u1ed9c \u0111i\u1ec1u ki\u1ec7n th\u1eddi ti\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng trong vom nilon trong\u00a0 kho\u1ea3ng: [A2 min<\/sub> – A2 max<\/sub>]<\/p>\n

* X\u00e1c \u0111\u1ecbnh ch\u1ebf \u0111\u1ed9 che s\u00e1ng \u1edf NGH khi gi\u00e2m hom Keo lai<\/b><\/p>\n

Qua c\u00e1c th\u00ed nghi\u1ec7m gi\u00e2m hom [4, 7, 8 ] c\u00f3 th\u1ec3 ch\u1ecdn A2 min<\/sub> = 1.500 lux, A2 max<\/sub> = 12.000 lux<\/p>\n

\u00c1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p tr\u00ean \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh ch\u1ebf \u0111\u1ed9 che s\u00e1ng khi gi\u00e2m hom Keo lai nh\u01b0 \u0111\u1ed3 th\u1ecb 5<\/p>\n

\"15-03-28-NhaGH6\"<\/a><\/p>\n

A2-L1: Di\u1ec5n bi\u1ebfn c\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng trong v\u00f2m nilon (A2) khi ch\u1ec9 che 1 t\u1ea7ng l\u01b0\u1edbi Th\u00e1i Lan 50%<\/p>\n

A2-L2: Di\u1ec5n bi\u1ebfn c\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng trong v\u00f2m nilon (A2) khi ch\u1ec9 che 1 t\u1ea7ng l\u01b0\u1edbi Th\u00e1i Lan 60%<\/p>\n

A2-L3: Di\u1ec5n bi\u1ebfn c\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng trong v\u00f2m nilon (A2) khi ch\u1ec9 che 1 t\u1ea7ng l\u01b0\u1edbi Th\u00e1i Lan 70%<\/p>\n

A2-2L1: Di\u1ec5n bi\u1ebfn c\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng A2 khi che 2 t\u1ea7ng l\u01b0\u1edbi Th\u00e1i Lan 50%<\/p>\n

A2-(L1+L3): Di\u1ec5n bi\u1ebfn c\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng A2 khi che 2 t\u1ea7ng l\u01b0\u1edbi Th\u00e1i Lan 50% + 70 %<\/p>\n

A2-(L2+L3): Di\u1ec5n bi\u1ebfn c\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng A2 khi che 2 t\u1ea7ng l\u01b0\u1edbi Th\u00e1i Lan 60% + 70 %<\/p>\n

\u1ede c\u00e1c \u0111i\u1ec1u ki\u1ec7n th\u1eddi ti\u1ebft n\u1eafng v\u00e0 m\u00e2y ho\u1eb7c m\u00e2y m\u00f9 m\u01b0a li\u00ean t\u1ee5c trong ng\u00e0y trong m\u00f9a h\u00e8, thu, \u0111\u00f4ng, xu\u00e2n c\u0169ng \u0111\u01b0\u1ee3c x\u00e1c \u0111inh t\u01b0\u01a1ng t\u1ef1 v\u00e0 c\u00f3 \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 t\u1ea1i b\u1ea3ng 3<\/p>\n

B\u1ea3ng 3: Ch\u1ebf \u0111\u1ed9 che s\u00e1ng cho Keo lai trong nh\u1eefng ng\u00e0y c\u00f3 th\u1eddi ti\u1ebft \u0111\u1eb7c tr\u01b0ng<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n
\n

M\u00f9a\/ th\u1eddi ti\u1ebft<\/p>\n<\/td>\n

\n

Th\u1eddi gian trong ng\u00e0y<\/p>\n<\/td>\n

\n

Ch\u1ebf \u0111\u00f4 che<\/p>\n<\/td>\n<\/tr>\n

M\u00f9a h\u00e8,<\/b> ng\u00e0y n\u1eafng n\u00f3ng kh\u00f4ng m\u00e2y ho\u1eb7c \u00edt m\u00e2y<\/td>\n\n

Tr\u01b0\u1edbc 8 h, sau 16 h 45<\/p>\n<\/td>\n

1 t\u1ea7ng l\u01b0\u1edbi 50% + nilon ph\u1ee7 v\u00f2m che lu\u1ed1ng gi\u00e2m<\/td>\n<\/tr>\n
8 h \u2013 9 h15 v\u00e0\u00a0 15 h30 – 16 h45<\/td>\n1 t\u1ea7ng l\u01b0\u1edbi 70% + nilon ph\u1ee7 v\u00f2m che lu\u1ed1ng gi\u00e2m<\/td>\n<\/tr>\n
\n

9 h15 – 15 h30<\/p>\n<\/td>\n

2 t\u1ea7ng l\u01b0\u1edbi 50% + nilon ph\u1ee7 v\u00f2m che lu\u1ed1ng gi\u00e2m<\/td>\n<\/tr>\n
M\u00f9a thu:<\/b> ng\u00e0y n\u1eafng kh\u00f4ng m\u00e2y ho\u1eb7c \u00edt m\u00e2y<\/td>\nTr\u01b0\u1edbc 8 h 45, sau 15 h 30<\/td>\n1 l\u01b0\u1edbi 50% + nilon ph\u1ee7 v\u00f2m che lu\u1ed1ng gi\u00e2m<\/td>\n<\/tr>\n
8 h 45 \u2013 9 h 45 v\u00e0 14 h30 -15 h 30<\/td>\n1 l\u01b0\u1edbi 60% + nilon ph\u1ee7 v\u00f2m che lu\u1ed1ng gi\u00e2m<\/td>\n<\/tr>\n
\n

9 h 45 – 14 h 30<\/p>\n<\/td>\n

1 l\u01b0\u1edbi 70 %<\/td>\n<\/tr>\n
M\u00f9a \u0111\u00f4ng:<\/b> ng\u00e0y n\u1eafng kh\u00f4 hanh kh\u00f4ng m\u00e2y<\/td>\nTr\u01b0\u1edbc 8 h 30, sau 16 h<\/td>\nKh\u00f4ng che l\u01b0\u1edbi, ch\u1ec9 che v\u00f2m nilon<\/td>\n<\/tr>\n
8 h 30 – 16 gi\u1edd:<\/td>\nChe 1 l\u01b0\u1edbi 50 % + nilon ph\u1ee7 v\u00f2m che lu\u1ed1ng gi\u00e2m<\/td>\n<\/tr>\n
M\u00e2y m\u00f9, ho\u1eb7c m\u01b0a ph\u00f9n d\u1ea7y \u0111\u1eb7c c\u1ea3 ng\u00e0y<\/td>\nC\u1ea3 ng\u00e0y<\/td>\nKh\u00f4ng che l\u01b0\u1edbi, ch\u1ec9 che v\u00f2m nilon<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

K\u1ebft lu\u1eadn<\/b><\/p>\n

1- C\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng ngo\u00e0i tr\u1eddi bi\u1ebfn \u0111\u1ed9ng r\u1ea5t ph\u1ee9c t\u1ea1p, ph\u1ee5 thu\u1ed9c th\u1eddi \u0111i\u1ec3m trong ng\u00e0y, m\u00f9a v\u1ee5..M\u1ed7i m\u1eeba c\u00f3 3 tr\u1ea1ng th\u00e1i th\u1eddi ti\u1ebft \u0111\u1eb7c tr\u01b0ng, c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng ngo\u00e0i tr\u1eddi \u1edf m\u1ed9t s\u1ed1 tr\u1ea1ng th\u00e1i c\u00f3 th\u1ec3 m\u00f4 t\u1ea3 b\u1eb1ng ph\u01b0\u01a1ng tr\u00ecnh to\u00e1n h\u1ecdc b\u1eadc 2<\/p>\n

2- H\u1ec7 s\u1ed1 che s\u00e1ng c\u1ee7a nilon v\u00e0 t\u1ea5m nh\u1ef1a composite t\u0103ng nhanh theo th\u1eddi gian s\u1eed d\u1ee5ng.. H\u1ec7 s\u1ed1 che s\u00e1ng c\u1ee7a nilon t\u0103ng theo c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng ngo\u00e0i tr\u1eddi c\u00f2n h\u1ec7 s\u1ed1 che s\u00e1ng c\u1ee7a l\u01b0\u1edbi che l\u1ea1i gi\u1ea3m. H\u1ec7 s\u1ed1 che s\u00e1ng c\u1ee7a t\u1ed5 h\u1ee3p nhi\u1ec1u t\u1ea7ng che nh\u1ecf h\u01a1n t\u00edch s\u1ed1 h\u1ec7 s\u1ed1 che s\u00e1ng c\u1ee7a c\u00e1c l\u01b0\u1edbi che ri\u00eang bi\u1ec7t. C\u00e1c m\u1ed1i quan h\u1ec7 n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 b\u1eb1ng c\u00e1c ph\u01b0\u01a1ng tr\u00ecnh to\u00e1n h\u1ecdc b\u1eadc 1<\/p>\n

3- Kh\u00f4ng n\u00ean s\u1eed d\u1ee5ng NGH trong \u0111i\u1ec1u ki\u1ec7n Vi\u1ec7t Nam d\u01b0\u1edbi d\u1ea1ng nh\u00e0 c\u00f3 k\u00ednh v\u00e0 nilon bao che ngo\u00e0i. Ch\u1ec9 n\u00ean s\u1eed d\u1ee5ng t\u1ea5m nh\u1ef1a composte \u0111\u1ec3 che gi\u00f3 xung quanh v\u00e1ch c\u1ee7a NGH. Nilon ho\u00e0n to\u00e0n ph\u00f9 h\u1ee3p cho c\u00e1c NGH l\u00e2m nghi\u1ec7p song ph\u1ea3i r\u1eeda s\u1ea1ch b\u1ee5i \u0111\u1ea5t sau m\u1ed7i \u0111\u1ee3t gi\u00e2m hom<\/p>\n

4- L\u01b0\u1edbi che Trung Qu\u1ed1c c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng th\u1ea5p ch\u1ec9 ph\u00f9 h\u1ecdp cho c\u00e1c NGH t\u1ea1m th\u1eddi quy m\u00f4 nh\u1ecf \u1edf c\u00e1c v\u00f9ng \u00edt c\u00f3 gi\u00f3 m\u1ea1nh v\u00e0 kh\u00f4ng c\u00f3 gi\u00f3 L\u00e0o. C\u00e1c lo\u1ea1i l\u01b0\u1edbi che Th\u00e1i Lan c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 b\u1ec1n cao, r\u1ea5t ph\u00f9 h\u1ee3p cho h\u1ec7 th\u1ed1ng che s\u00e1ng c\u1ee7a c\u00e1c NGH quy m\u00f4 c\u00f4ng nghi\u1ec7p.<\/p>\n

5- D\u1ef1a v\u00e0o \u0111\u1eadc t\u00ednh di\u1ec5n bi\u1ebfn \u00e1nh s\u00e1ng ngo\u00e0i tr\u1eddi trong ng\u00e0y \u1edf c\u00e1c \u0111i\u1ec1u ki\u1ec7n th\u1eddi ti\u1ebft \u0111\u1eb7c tr\u01b0ng trong c\u00e1c m\u00f9a v\u00e0 h\u1ec7 s\u1ed1 che s\u00e1ng c\u1ee7a c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u che, d\u1ec5 d\u00e0ng x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c c\u00e1c th\u00f4ng s\u1ed1 c\u01a1 b\u1ea3n c\u1ee7a h\u1ec7 th\u1ed1ng che s\u00e1ng NGH, ch\u1ebf \u0111\u1ed9 che s\u00e1ng theo th\u1eddi gian trong c\u00e1c ng\u00e0y c\u00f3 th\u1eddi ti\u1ebft \u0111\u1eb7c tr\u01b0ng \u0111\u1ec3 \u0111\u00e1p \u1ee9ng t\u1ed1t nh\u1ea5t nhu c\u1ea7u \u00e1nh s\u00e1ng cho qu\u00e1 tr\u00ecnh gi\u00e2m hom. H\u1ec7 th\u1ed1ng che s\u00e1ng ph\u00eda tr\u00ean c\u00e0ng g\u1ed3m nhi\u1ec1u t\u1ea7ng che \u1edf d\u1ea1ng di \u0111\u1ed9ng \u0111\u1ed9c l\u1eadp c\u00e0ng t\u0103ng kh\u1ea3 n\u0103ng \u0111i\u1ec1u ti\u1ebft c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng t\u1ef1 nhi\u00ean \u0111\u1ec3 t\u1ea1o \u0111\u01b0\u1ee3c \u00e1nh s\u00e1ng trong MTGH th\u00edch h\u1ee3p h\u01a1n cho c\u00e2y tr\u1ed3ng, tuy nhi\u00ean k\u1ebft c\u1ea5u h\u1ec7 th\u1ed1ng che ph\u1ee9c t\u1ea1p h\u01a1n l\u00e0m t\u0103ng gi\u00e1 th\u00e0nh ch\u1ebf t\u1ea1o. V\u00ec v\u1eady, ch\u1ec9 l\u00e0m h\u1ec7 th\u1ed1ng che tr\u00ean v\u1edbi 2 t\u1ea7ng l\u01b0\u1edbi di \u0111\u1ed9ng. Khi c\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng qu\u00e1 m\u1ea1nh, n\u1ebfu ph\u1ea3i th\u00eam t\u1ea7ng l\u01b0\u1edbi th\u1ee9 3 th\u00ec b\u1ed5 sung, ph\u1ee7 tr\u1ef1c ti\u1ebfp tr\u00ean m\u1eb7t v\u00f2m nilon khi c\u1ea7n<\/p>\n

 <\/p>\n

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

1- \u00a0D\u01b0\u01a1ng M\u1ed9ng H\u00f9ng, 2005. K\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng c\u00e2y r\u1eebng. Nh\u00e0 xu\u1ea5t b\u1ea3n N\u00f4ng nghi\u1ec7p.<\/p>\n

2- \u00a0Nguy\u1ec5n Ho\u00e0ng Ngh\u0129a, 2001. Nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh v\u00e0 tr\u1ed3ng r\u1eebng d\u00f2ng v\u00f4 t\u00ednh. Nh\u00e0 xu\u1ea5t b\u1ea3n N\u00f4ng nghi\u1ec7p H\u00e0 N\u1ed9i.<\/p>\n

3- \u00a0L\u00ea \u0110\u00ecnh Kh\u1ea3\u00a0 v\u00e0 c\u00e1c CTV, 2003. Ch\u1ecdn t\u1ea1o gi\u1ed1ng v\u00e0 nh\u00e2n gi\u1ed1ng cho m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng ch\u1ee7 y\u1ebfu \u1edf Vi\u1ec7t Nam, Ch\u01b0\u01a1ng 8 . Nh\u00e0 xu\u1ea5t b\u1ea3n N\u00f4ng nghi\u1ec7p, H\u00e0 N\u1ed9i.<\/p>\n

4- -L\u00ea Xu\u00e2n Ph\u00fac, Cao Ch\u00ed C\u00f4ng, Ph\u1ea1m \u0110\u00ecnh M\u1ea1nh\u00a0 CTV, 2009. B\u00e1o c\u00e1o t\u1ed5ng k\u1ebft \u0111\u1ec1 t\u00e0i: \u201dNghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 gi\u1ea3i ph\u00e1p k\u1ef9 thu\u1eadt nh\u1eafm c\u1ea3i thi\u1ec7n m\u00f4i tr\u01b0\u1eddng nh\u00e2n gi\u1ed1ng c\u00e2y r\u1eebng b\u1eb1ng hom c\u00e0nh trong v\u00f9ng ch\u1ecbu \u1ea3nh h\u01b0\u1edfng c\u1ee7a gi\u00f3 L\u00e1o v\u00e0 gi\u00f3 m\u00f9a \u0110\u00f4ng B\u1eafc\u201d<\/p>\n

1- \u00a0L\u00ea Xu\u00e2n Ph\u00fac, Cao Ch\u00ed C\u00f4ng, Ph\u1ea1m \u0110\u00ecnh M\u1ea1nh, 2009. B\u00e1o c\u00e1o k\u1ebft qu\u1ea3 \u0111i\u1ec1u tra kh\u1ea3o s\u00e1t c\u00e1c v\u01b0\u1eddn \u01b0\u01a1m l\u00e2m nghi\u1ec7p trong n\u01b0\u1edbc v\u00e0 K\u1ebft qu\u1ea3 tham quan h\u1ecdc t\u1eadp c\u00e1c v\u01b0\u1eddn \u01b0\u01a1m l\u00e2m nghi\u1ec7p c\u00f4ng ngh\u1ec7 cao t\u1ea1i Trung Qu\u1ed1c<\/p>\n

2- \u00a0L\u00ea Xu\u00e2n Ph\u00fac, Cao Ch\u00ed C\u00f4ng, Ph\u1ea1m \u0110\u00ecnh M\u1ea1nh, 2009. B\u00e1o c\u00e1o k\u1ebft qu\u1ea3 kh\u1ea3o s\u00e1t c\u00e1c v\u01b0\u1eddn \u01b0\u01a1m l\u00e2m nghi\u1ec7p trong n\u01b0\u1edbc v\u00e0 K\u1ebft qu\u1ea3 tham quan h\u1ecdc t\u1eadp v\u01b0\u1eddn \u01b0\u01a1m c\u00f4ng ngh\u1ec7 cao \u1edf Trung Qu\u1ed1c<\/p>\n

3- Trung t\u00e2m Nghi\u00ean c\u1ee9u Gi\u1ed1ng c\u00e2y r\u1eebng, 2001. T\u1eadp hu\u1ea5n k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng Keo lai b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gi\u00e2m hom<\/p>\n

4- \u00a0Trung t\u00e2m Nghi\u00ean c\u1ee9u Gi\u1ed1ng c\u00e2y r\u1eebng, 2004. H\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng, tr\u1ed3ng v\u00e0 khai th\u00e1c Keo lai n\u0103ng su\u1ea5t cao.<\/p>\n

8- Trung t\u00e2m NC c\u00e2y nguy\u00ean li\u1ec7u gi\u1ea5y, 2000. K\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng B\u1ea1ch \u0111\u00e0n b\u1eb1ng hom<\/p>\n

9- Frank A. Blazich, Professor Department of Horticultural Science. Plant Propagation by Stem Cutting: Instructions for Home\u00a0 Gardener. Http:\/\/www.ces.ncsu.edu\/depts\/hort\/hil\/hil-8702.html<\/a>,\u00a0 3\/20\/2006.<\/p>\n

10- Gislerod, Hans R. 1983.\u00a0 Physical conditions of propagation media and their influenceon the rooting of cuttings: The effect of the geenhouse environment on the temperature of propagation media. Pant and soil.<\/p>\n

\u00a0<\/b><\/p>\n","protected":false},"excerpt":{"rendered":"

TS. L\u00ea Xu\u00e2n Ph\u00fac v\u00e0 c\u00e1c CTV \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam I- M\u1ede \u0110\u1ea6U Ch\u1ea5t l\u01b0\u1ee3ng gi\u1ed1ng quy\u1ebft \u0111\u1ecbnh n\u0103ng su\u1ea5t, ch\u1ea5t l\u01b0\u1ee3ng r\u1eebng tr\u1ed3ng. Ng\u00e0y nay, \u1edf n\u01b0\u1edbc ta nhu c\u1ea7u c\u00e2y gi\u1ed1ng ch\u1ea5t l\u01b0\u1ee3ng cao cho tr\u1ed3ng r\u1eebng nguy\u00ean li\u1ec7u, ph\u00f2ng h\u1ed9 v\u00e0 b\u1ea3o t\u1ed3n ngu\u1ed3n gen ng\u00e0y […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[11,72],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/14444"}],"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\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/comments?post=14444"}],"version-history":[{"count":3,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/14444\/revisions"}],"predecessor-version":[{"id":14446,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/14444\/revisions\/14446"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=14444"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=14444"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=14444"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}