KHOA HOC C O N G N G H l
DAMH GIA M d l TRUCTIXIG D A T VA IVUiirC PHLJC VU OUY HOACH SAM X U A T CHE AIM TOAIV O THAI IVELIYEIV
Nguyen Hiing Cu6ng', Nguyen Van Chinh^
Nguygn V6 Unh', Nguyen Vo Kifin^, Ph?m Binh Quy^n^'
T6MTAT
San ph&n che Thai Nguyen da co ti^ng tir ISu dfiri, noi d^ng trfin th^ gi6i vA diing t h u 2 todn qu6c. V6i 52 lang ngh^ san xuflt, cac thuong hi^u ch6 ThAi Nguyen n6i ti^ng n h u TSn Cuong, La B4ng, Trai Cia, QuSn Chu.,-da buoc dau thanh c6ng. T u y nhifin th6ng di^p nit ra tir Li^n hoan Tri Qu6c t^ l4n thur nh^t nSm 2011 to chuc tai Thai Nguyen la "phai san xudt chd s^ch, chd an todi/'. Ket qua ph&n tich cho th^y du luong cua m6t s6 kim loai nang chii y^u n h u As, Cd, Cu, Pb, Zn trong 493 m l u dfit tr6ng che vA Hg, Cd, As, Pb trong 250 m i u nuoc tuoi c h e d^u th^p hon so v6i miic gioi h^in tdi da cho ph^p du(?c quy djnh tai Quy^t djnh so 99/2008/QD-BNN. Di4u ki^n c ^ Id ch^t lugng mfii Uiriiig: ddt U^ng vd nu6c tuoi viing che da dam bao san xuat c h e an todn hdng h6a quy m6 Ion, vfin d^ c6n l?i Id dp dyng cdc bi$n phdp canh tdc tifin ti^n (VietGAP) de ddm bao chSt lugng, tir do m o rpng thj t r u i n g xufit khdu d^ phdt tri^n b^n viing vd dem lai hi^u qua kinh t4 cao.
TCrkhda; Che an toan, che sach, che tinh Thai Nguydn.
L OAT VAN D^
N g a n h s a n x u a t c h e T h a i N g u y e n d a h i n h t h a n h d u o c c a c v i m g c h u y d n c a n h c h e t r o n g d i ^ m tai c a c h u y e n , t h i n h u : T l i a n h p h o T h a i N g u y e n {Tin Cuong, PhiicXuan, Phlie Ha); Dai Til ( Q u a n Chu, La Bin^\ P h u L u o n g ( F d Tranii, Tuc Tranh); D o n g H y (T/a/' Cii, Mmh Z a p ) . . . C h e T h a i N g u y e n d u g c ti^u t h u a c a till t n r o n g t r o n g v a n g o a i n u o c , t r o n g d o thi t r u o n g n p i d i a c h i e m 70% s a n p h a m c h e x a n h .
T u y n h i S n , d^ s a n x u ^ t c h e a n toan t h i viec n g h i S n ciru, d a n h g i a c a c c h i ti&u d i e u ki&n m 6 i truong {dat trong vi nude tudi) co anh huong nhu the nao den san xuat che trdn quy mo rpng t o ^ tinh chua duoc nghien cihi, phan tich cu th^, chi ti^t d^n timg huydn trong che. D^ phat trien b^n vung mat hdng che an toan, che sach ciia Vidt Nam noi chung vk che Thdi Nguydn noi ridng thi chi so di^u kidn chat lupng moi truong {dat trdng vi nude tudi) phai dupe dam bao, bdn each dd \k qud trinh san xuit chd an toan phai tuSn thu theo cac tidu chuan ISO, HACCP, GMP, VietGAP...Co nhu v£iy che Thii Nguydn m6i phdt tri^n b^n vOng vi dem lai hidu qua kinh t^ cao.
K^t qua ki^m nghidm, phSn tich him lupng cdc chat ddc hai c6 trong cdc tnhi dat vd mau nuoc sd g6p phan xdc dinh cu th^ viing quy hoach san xuat
' Vi?n Quy ho9ch vd Thiet k^ N6ng nghi?p ' D^ihpcQuficgiaHdNpi
chd an todn b^n vimg cho tinh Thdi Nguydn d^n ndm 2020 va cdc ndm tiep theo.
I . BOl TUQNG, THOI GIAN, BIA DIEM VA PHUONG PHAP NGHIEN COO
1. B6i tupng
- Du lupng cac chat doc hai As, Cd, Pb, Cu, Zn co trong cdc mau dit trong che cua 09 huydn, thi trong tinh;
- Du lupng cdc chat doc hai As, Cd, Pb, Hg co trong cdc mau nuoc tuoi che cua 09 huyen, thi trong tinh.
2. Thbi gian vd dja di^m
- Thoi di^m l^y mdu nghidn cuu; mdu ddt vd mdu nuoc dupe lay truoc miia mua {thing 4) de nghidn cuu, thi nghidm;
- Viing nghidn ciiu quy mo rpng trdn pham vi todn tinh 18.500 ha, bao gom: TP. Tlidi Nguyen L300 ha, TX. Sdng Cdng 650 ha, huydn Dinh Hod 2.670 ha, huy^n Vo Nhai 650 ha, huy^n Phii Luong 3.780 ha, huy^n Dong Hy 2.700 ha, huydn Dai Tir 5.300 ha, huydn Phii Binh 100 ha, huy^n Ph6 Ydn 1.350 ha.
3. Phuong phdp
- Phuong phdp dilu tra thong kd: smi tdp cdc tdi li$u da CO, k^ thixa cdc tu Udu dieu tra;
- Phuong phdp Idy mdu: Idy mdu ddt theo TCVN 4046:1985, TCVN 5297:1995, lOTCN 367:1999; lay mau nuoc theo TCVN 6000-1995 doi voi nuoc ngam, TCVN 5996-1995 d6i vdi nuoc sdng va suoi, TCVN
NONG NGHIIP VA PHAT TRIEN NONG THON - KY 1 - THANG 8/2012
37KHOA HOC C O N G N G H I
5994 -1995 doi v<ri nuoc ao, h6 tu nhifin, nhSn t?o;
phan tich mau theo phuong phip quang ph6 hSp thy nguyen tu.
• . K E T QUA V A T H A O LUAN
Tinh den hk nam 2010, tota tinh c6 18.500 ha che, trong d6: huyfn Dai Tir c6 5.300 ha (chidm 2SM; huyen Phii Luong c6 3.780 ha (,chiim 20,491);
huySn Dinh H6a c6 2.670 ha (chidm 14,9X> vi huy^n Dong Hy c6 2.709 ha (chain 14,6%). San lu(mg c h i huyta Dai Tir dat 50.530 t i l (chidm 29,4%); huy^n Phii Luong dat 38.422 tin (chidm 22,3%); huy^n D6ng Hy dat 28.368 tan (chii'm 16,5%).
Nhu vay che vin la cSy tr6ng chii lire ciia cdc huyfen trong tinh. Tuy nhi^n d^ dat dupe viing Stin xuit c h i an toan hilng h6a 16n v&n cdn c6 nhiing nghiin cuu, phdn tich cdc chi tiiu mdi t r u ^ g c6
trong d i t tr6ng vi nu6c tu6i c h i (du lufmg cic ck die h$i)\ k^t hop v6i bi^n phdp canh tdc theo Vie GAP... vd c6ng tdc khai thdc thj t m t a g ngodi nirt 6n djnh sS g6p phdn dua "Chi ThiiNguyiif demlj hiOu qud kinh t^ cao vd b^n vung cho nguoi trong w ngdnh c h i ciia tinh.
1. K^t qud phdn tich du luiTng kim lo?i njiiig a trong cdc mSu d i t vd mSu nu6c cua viing nghiio ciiu a. Kdt qui phin ti'ch du luting kim loai n^
tiong cic mSuddt
Kit qud phdn tich du luiTng kim loai ndng nhu As, Cd, Pb, Cu, Zn (bdng 1) c6 trong 494 mau dJtTf Thdi Nguyin 37 mdu; Tx SOng C6ng 17 miu, Vo Nhai 14 mdu, Phii binh 03 mdu, Phd Yin 33 mSu, Djnh H6a 75 mdu, Phii Luong 99 mdu, D6ng Hy 72 mdu, Dai Til 144 mdu, cho thdy:
Bdng TT
1 2 3 4 5
6 7 8 9
1. Kit qud phdn tich Huyen/thanh pho TP. Thdi Nguyin
TX. Song Cong H. Sinh Hoa
H. Vo Nhai H. Phii Luong
H. Song Hy H.Dai Til H. Phii Binh
H. Phd Yin Todn tinh
du luong mdt Tdng sd mdu phdn tich (mau)
37 17 75 14 99
72 144 3 33 494
sdkim oai ndng c6 trong mdu ddt vim Sd mdu dat tiiu
chudn an todn Mdu
37 17 74 14 91
63 131 3 33 463
100,00
%
100,00 98,67 100,00 91,92
87,50 90,97 100,00 100,00 93,72
Sd mdu vu(;rt gioi han cho phip Mdu
1
8
9 13
31
%
1,33
8,08
12,50 9,03
6,28
7 trdng c h i tinh Tlidi Nguyen Ghi chii
Mdu vugtDLZn 5 mau vui?t DL Pb, 1 mau vupt DL As, 1 mauvui7tca2
chi tiiu As vd Pb 6 mau vupt DL Pb, 2 mdu vupt DL As, 1 mdu vuptca3
chitiiuAs.Pb,Cu 9 mau vupt DL Cu; 4 miu
vuptDLPb
Ghi chu: DLdu lupng, ngudn :Kdtquiphin tich - Du lupng As cd trong 494 mau dat, bidn thiin nho nhdt tii 0,027 (xd Hpp Thdnh-Phii Luong) ddn cao nhdt 19,96 ppm (xd Quang Son-huydn Ddng Hy);
so voi gidi han tdi da cho phip Id 12 ppm thi c6 5 mau phdn tich vupt miic gidi h?n tdi da cho phip (tiong dd huyin Phu Luong cd 2 miu; huyin Bdng Hycd3 mau), 489 mdu cdn lai cd hdm lupng As ddu ndm trong gidi han tdi da cho phip (him lu^mg tiwig binh cic miu la 2,516ppni).
- Du lupng Cd cd trong 494 dat mdu diu p miic thap hpn nhidu so vdi tiiu chudn cho phip, gioi han tdi da cho phep Id 2 ppm thi hdm lupng Cd trong dat do dupe bien thiin nhd nhat tir 0,007 (Phii Luong) den cao nhdt 0,553 ppm (Dinh Hda); miic trung binh cac mdu do dupe Id 0,181 ppm.
miu ddt nim 2011
- Du lupng Pb cd trong 494 mdu ddt do dupe bi^n thiin nho nhdt, tir 3,78 ppm (xa Van Hdn-huyen Ddng Hy) din cao nhdt 872,445 ppm (xa HppTiin- huyin Ddng Hy); so vdi miic gidi h?n tdi da cho phep Id 70 ppm thi cd 17 mdu vupt ngudng cho phip (ti-ong dd huyin Phu Luong cd 6mau; BingHycdS miu; Bfu Tu cd 4 mid), 477 mau cdn lai diu trong miic gidi han an toan (trung binh cic mdu la 29,74f ppm).
- Du lupng Cu cd trong 494 mdu dat biin thien tii 3,75 (xd Cdt Ni-huydn Dai Tir) - 189,73 ppm (xa Sm Phii-Huydn Dinh Hda); so vdi gidi han tdi da cho p h i p Id 50 ppm thi cd 10 mdu vupt miic (tivng iod 9 miu & huyin D^ Tu, Imau d huyin DdngHy), ^ mau cdn lai cd hdm lupng Cu ddu d' miic thdp (tn^
38
NONG NGHlfP VA PHAT TRIEN N 6 N G THON - KY 1 - THANG 8/20)2
KHOA HOC C O N G N C H j
trung binh cic miu Ii 21,93ppni).
- Du lupng Zn cd trong 494 mdu ddt bidn thiin til 11,31 ppm (xd Thdnh Cdng-huyin Phd Ydn) - 198,26 ppm (xa Tdn Linh-huyin Dai Tir), so vdi gidi han tdi da cho phep Id 200 ppm, thi chi cd 1 mau vupt mirc, dd la mau DT-46NH (198,26 ppm) a xdm 12, xd Tdn Linh, huyin Dai Tir; p 493 mau cdn lai ddu thdp hon nhiiu so vdi muc gidi han tdi da cho phip (him luong tivng binh cic mau Ii 46,135ppm).
b. Kit qui phin ti'ch du luQng kim loai n$ng co tiong nude tudi
Kdt qud kidm nghidm, phdn tich du lupng cdc kim loai n?ing nhu As, Cd, Pb, Hg cd trong 250 mau nude cua 09 huydn, thj trong tinh, cu thd: Tp.Thai Nguyin 19 mdu, Tx Sdng Cdng 09 mdu, Djnh Hda 37 mdu, Vo Nhai 07 mdu, Phii Luong 49 mdu, Ddng Hy 36 mdu, Dai Tii 75 miu, Phu Binh 01 mdu, Phd Yen 17 mdu, cho thdy:
ang2 TT
1 2 3 4 5 6 7 8 9
Kdt qud phdn tich ( Huyen/thdnh
phd TP. Thai Nguyin TX. Sdng Cdng H. Dinh Hda H. Vd Nhai H. Phii Luong H. Ddng Hy H.Dai Tir H. Phii Binh H. Phd Yen
Todn tinh
u lupng mdt Tdngsd mau phdn tich (mdu) 19 9 37 7 49 36 75 1 17 250
sdkim loai Sd mau chudn Mdu
19 9 37 7 49 36 75 1 17 250
n$iigcdt dat tidu an todn
100,00
%
100,00 100,00 100,00 100,00 100,00 100,00 100,00 100,00 100,00
rong mdu n udc viing Sd mau vupt gidi
ban cho phip
Mdu
%
rdng c h i tinh Thdi Nguyi Ghi chii Dii didu kidn an toan Du didu kidn an toan Dii diiu kiin an todn Dii diiu kiin an todn Dii diiu kiin an todn Dii didu kiin an todn Dii diiu kiin an todn Du diiu kiin an todn Dii diiu kiin an todn GhichwDhDu lugng, nguon: Ket qua phan tich miu datnSm 2011
• Du luong Hg CO trong 250 mau nuoc tuoi che d^u b mite thap so voi tieu chudn cho phep la 1 jig/l, hdm lupng Hg trong nuoc tuoi do duoc bi^n thidn tir 0,062-0,207 \ig/l; himg binh do dugc la 0,141 ng/1.
Nhin chung khong cd su khde biet nhi^u giua nuoc mdt vd nuoc ngam; nuoc tudi che ciia viing nghidn cuu dat tidu chuan an todn v^ ham lupng Hg.
- Du lupng Cd cd trong 250 mau nuoc tudi chd deu b muc thap hon nhi^u so vdi gidi han toi da cho phep la 10 jig/l; ham lupng Cd trong nuoc do dupe bien thidn tu 0,009-1,194 ng/1, ham lupng trung binh la 0,147 jig/1. Ket qua trdn cho thay khong cd su khde bidt nhi^u v^ ham lupng Cd trong nuoc mdt vd nuoc ngam; nuoc tudi che viing nghidn cuu ndm trong miic gidi han an toan.
- Du luong As cd trong 250 mdu nude Uroi bi^n thidn tu 0,085- 14,975 \ig/\, hdm lupng trung binh 0,893 \igA; so vdi gidi han toi da eho phdp Id 100 |ig/l thi hdm luong i ^ d ede mdu nghidn ciiu d^u thdp hon rat nhieu. K^t qua nghidn euu cho th^y nude tudi viing tr6ng che eua tinh dat tidu ehuan an todn v^
hdm lupng As.
- Du lupng Pb CO trong 250 mau nude tudi chd d mire thdp hon nhi^u so vdi tidu ehuan eho phep la 100 ^ig/I, hdm lupng Pb trong nude do dugc bi^n
thidn tir 0,016-6,281 ng/1; tmng binh do dupe Id 0,581
^g/1. Nhu vay, nuoc tudi chd ciia vung nghidn ciiu dat tidu ehuan an toan v^ ham lupng Pb.
2. Xdy dung bdn 66 quy h o ^ h vd san xudt chd an todn
Cdn cu vdo k^t qua ddnh gid moi trudng dat vd nude d^ tdi dd sii diing h§ thdng thdng tin dia ly (GIS) d^ xdy dung ban dd cho cdc viing trong d?it tidu chu& mdi trudng dat va nude cua tinh Thai Nguydn, tir dd xdc djnh dupe vj tri va didn tich viing trong che an toan eiia tinh. Do khdng cd mau nude ndo vupt ngudng an todn theo theo Quyet dinh so 99/2008/QD-BNN ndn dja bdn tinh Thai Nguydn ehi su dung 2 cap danh gid an todn Id: An todn vd chua du di^u kien an todn. K^t qua nghidn euu cho thay:
NONG NGHlfP VA PHAT TRIEN N O N G THON - KY 1 - THANG 8/2012
39KHOA HOC C O N O NGHt
- Diin tich an todn cd 18.067 ha, chidm 97,66% - Didn tich chua du didu kidn an todn cd 433,tt tdng didn tich c h i cua tinh. ha, chidm 2,34% tdng didn tich chd cila tinh.
Bdng 3. Kdt qud ddnh gid miic dd an lodn ciia ddt trdng c h i Unh Thdi Nguydn
TT
1 2 3 4 5 6 7 8 9
Huydn
TP. Thdi nguyin TX. Sdng Cdng H. Dinh Hda H. Vo Nhai H. Phil Lupng H. Ddng Hy H.Dai Tir H. Phu Binh H. Phd Ydn
Toin dnh
Didn tich trdng
c h i 1.300
650 2.670 650 3.780 2.700 5.300 100 1.350 18.500
Didn tich dii diiu kidn quy hoach SX c h i an todn din
nam 2020 1.300
650 2.648 650 3.631 2.527 5.211 100 1.350 18.067
Bon vi:Hi Didn tich khdng dii didu kidn sdn xudt c h i an todn Tdng
didn tich 0,0 0,0 22 0,0 149,0 173 89 0,0 0,0 433
Didn tich chia theo huydn bj nhidm du lupng kim loai nang (dd bi loai trir) As
104,2
104,2 Pb
19,6 143,7 65,4 64,4
293,1 Cu
1,9
24,0
25,9 As,Fb
5,3
5,3 As, Pb, Cu
2,6
2,6 Ghi chii: didn tich 5,3 ha cua huydn Phii Uiang bf vugt ci hai chi sdAs. Pb; di$n tich 2,6ba cua huy^
Dong Hy bi vugt ci ba chlsdAs, Pb vi Cu.
Bdng 4. Quy h o ^ h viing sdn xudt chd an todn tinh Tlidi Nguydn
D VT: didn tich: ba; san lugng: t^
TT 1 2 3 4 5 6 7 8 9
Huyin TP. Thai Nguyin TX. Sdng Cdng H. Dinh Hda H. Vo Nhai H. Phii Lupng H. Dong Hy H Dai Til H Phii Binh H. Phd Yin
Toan tinh
2010 Diin tich
1.220 525 2.102
626 3.775 2.709 5.253 104 1.347 17.661
San lupng 14.670 4.582 18.954 3.522 38.422 28.368 50.530 702 12.150 171.900
2020 Tdng didn tich
quy hoach 1.300
650 2.670
650 3.780 2.700 5.300 100 1.350 18.500
Trong dd: DT chd an todn
1.300 650 2.648
650 3.631 2.527 5.212 100 1.350 18.068
San lupng chi an todn 20150
9.100 36.820 5.720 50.834 35.840 74.200 1.300 18.900 252.864 Nguon: ket qua khio sit, ti'nh toin 2011.
Kdt qua nghidn ciiu mdi Irudng dat vd mdi trudng nude tinh Thdi Nguyin cho thdy trdn tdng
didn tich 18.500 ha chd, cd 18.067 ha didn tich chd an todn; didn tich chua du didu kidn an todn 433,0 ha bi logi trir trong quy ho^ch viing sdn xudt che an to^
ciia tinh ddn nSm 2020. Trong cdc viing dupe quy ho^ch thi cd didn tich Idn nhat Id huydn Dai Tit 5.211 ha, sau dd ddn huydn Phu Luong 3.631 ha, DdngHj 2.527 ha, Dinh Hda 2.648 ha...vdi sdn lupng duki*!
252.864 tin.
Nghidn ciiuctingdaloaitrir trdn bdn dd 433,0 ha didn tich chua du didu kidn an todn, didn tich na(
dupe dd xudt chuydn ddi sang cdy trdng khde. KW 40 N 6 N G NGHllP VA PHAT TRIEN N6NG T H 6 N - KY 1 - T H A M C H/2012
KHOA HQC C 6 N 0 NGHt
qua danh gid cho thdy trong tdng sd 18.067 ha quy hoach sdn xudt chd an todn cd 18.067 ha (chidm 58,57% didn tich) rdt thich hpp (SI) vd 18.067 ha (chidm 40,43% diin tich) thich hpp (82) dd phdt tridn sdn xuat chd an todn.
N.KEIUMN
1. Kdt q u i phdn tich mdu ddt trdng vd mdu nude tudi c h i 6 09 huydn trdng chd trong tinh cho thdy mdi trudng dat trdng c h i vd nude hrdi chd d i u d?t tiiu chuan cho phdp sdn xuat c h i an todn quy md Ion.
2. Nghidn ciiu cling dd xudt den nam 2020 didn tich sdn xuat chd an todn trong todn linh Id 18.069 ha, trong dd diin tich rdt thich hpp (SI) Id 18.067 ha;
didn tich thich hpp (S2) Id 18.067 ha.
niiuEunuMiauo
1. Bp Ndng nghidp & PTNT, 2011. Diiu Oa ca bin chlsdan toin edp tinh tai 16 tinh, thinh phd.
2. Nguydn Hiing Cudng vd nnk CTap chi NN &
PTNT, 2011). Nghiin cuu kha ning sin xudt cua 06 xi vung chi ddc san Tin Cuong va hudng phit tridn chi an toin cua thinh phd Thii Nguyin.
3. Nguyin Thi Hudng, 2008. Nghiin cuu mot sd biin phip ky thuit cd hiiu qui sin xudt nguyin liiu
chi cho vung Tin Cuong, thinh phd Thii Nguyin.
Ludn vdn thac si, Vidn KHNN Vi^t Nam.
4. Nguydn Chi Trung, Nguydn Hiing Cudng, 2007. Khdn chuong bio vi uy tin chi Viit Nam. Bdo Ndng nghidp Vidt Nam sd 250 (2835).
5. Tdng eye Thdng kd: Nidn gidm Thdng kd Todn qudc. NGTK tinh Thdi Nguydn. NGTK Ndng, Ldm, Thuy sdn 2011.
6. UBND thdnh phd Thdi Nguydn, 2009. Quy ho^ch vung che d$c sin Tin Cuong- thinh phd Thii Nguyin theo hudng an toin giai do^ 200&2010 vi dinh hudng ddn nim 2020.
7. Sdt NN & PTNT Thdi Nguydn, 2011. Quy ho^ch vimg ndng nghiip chi an toin tinh Thii Nguyin ddn nim 2020
8. Viin QH & TKNN, 2006. Hoin thiin cosdda liiu vi thii t^c bio hd chi dan dia ly cho chi Tin Cuong. Dd tdi edp Bd NN&PTNT.
9. Vidn QH &TKNN, 2007. Tic ddng cua Hdi nhip KTQT ddn ndng sin hing hda xuat khau va ning l{ic canh tranh cua mdt sd m$t hing ndng sin chu ydu: gao, ciphi, chi...cua Viit Nam. Dd tdi c^p Bp NN&PTNT.
CAFACnY OF TEA PRODUCTION STUDY IN THAI NGUYEN PROVICE TOVMRD SAFETIY TO 2020 Nguyen Hung Cuong.Nguyen Van Chinh, Nguyen Vo Linh, Nguyen Vo Kien, Pham Binh Quyen Summary
Thai Nguyen province is proud of considering as a capital of revoluhon place in the North, Thai Nguyen tea products was famous for many years ago, which was famous in all over tlie world and ranked the second position in nation-wide, with fifty two trade villages, the famous trademarks of Thai Nguyen tea as Tan Cuong tea. La Bang tea, Trai Cai tea, Quan Chu tea...the first step is seccesfiil. However, at the first International Tea Festival in 2011, the notes were summarized that " necessity for clear tea production, safely tea production". The results of analysis of each element of heavy metal such as As, Cd, Cu, Pb, Zn in 493 soil profile samples and Hg, Cd, As, Pb in 250 water samples in tea areas, which showed that the element of heavy metals in soil profile samples and water samples were lower thanthemaximum allowable limit, which specified in Decision No. 99/2008/QD-BNN. The necessary condition is the quality of environment soil and water for tea; the remainder of problem is the application of Advanced cultivations (VIETGAP) to ensure the quality, since that time to extend the export market to subtainable development and get the the high economy effect
Keywords: Safe tea, clean tea, Thai Nguyen tea.
Ngu6i phdn bidn: PGS.TS. NguySn Hdng Son Ngdy nh$n bdi: 14/5/2012
Ngdy flidng qua phdn bidn: 15/7/2012 Ngdy duydt ddng: 23/7/2012
NONG NGHlfP VA PHAT TRIEN N 6 N G T H 6 N • K^ I - THANG 8/2012 41
