•'ghe Ndng nghiep Viet Nam -So 'i' ',"> .'0^0 The results showed thai apphcation of 5O0 g N + 500 g P.O.-H 500 g K,0 combined with 10 - 15 kg of "Trun que"
organic fertilizer/Humic or 10 kg poultry manure/post/year mcreased soil nutrients in comparison with Ihe control.
Chlorophyll content in branches of treatment appUcation with NPK •^ 15 kg o f Trun que" organic fertilizer or 15 kg Humic was higher (0.132 0.146 mg/l) than other treatments (0.09 - 0.112 mg/|). Application of 500 g N -f 500 g P,0, + 500 g K.O m combination with 10 - 15 kg/tree/year organic fertilizers such as Trun que; Humic or 10 kg pouilrv manure; post/year increased fruit weight and yield and color of fruit.
Keywords: Pink flesh dragon fruu variety LD5, "Trun que" organic fertilizer, color of fruit Ngay nb?n bai: I9/9/20I9
Ngay phan bien: 10/11/2019
Ngfldi phin bien: TS. Nguyen Hflu Hoang Ngay duyet dang: 10/12/2019
ANH HUdNG CUA PHAN B 6 N HlTU CO GLUTATHIONE LEN CAI BAP Nguyen Anh Vu'.Le Ngpc Tuan', Nguyen Hiing', Nguyen Van Dong'
T 6 M TAT
Cii bdp li mpt trong nhflng loai rau pho bien, cho nang suit cao, de sfl dung va than thi^n vdi ngUdi dung. Trong thi nghiem niy, chiing tdi di dinh gia anh hUdng eiia phan bdn la GSSG chfla 5% glutathione den su sinh trudng va phal tnen cua ciy cii bip. GSSG dUpc bon bo sung qua la 2 lan (GSSG x2) hoac 3 lan (GSSG x3) vio cac thdi dem 2; 4 va 8 tuan so vdi ddi chflng klidng bo sung GSSG vdi lieu lUpng 0,7 kg/ha/lan. Ket qua cho thay vi^c bon bo sung GSSG inh hUdng lich cUc den sU phat trien ciia cii bip. DUdng kinh bap co xuat hien su khic bi^t gifla doi chflng va cong thflc sau khi Irdng 7 luan. Mflc nay van duy tri cho den khi thu hoach vio luan thfl 12, khac biet ve dUdng kinh gifla cdng thflc bdn GSSG x2 va GSSG x3, lan lupt la 11% va 16%. Ngoai ra, phan bdn la nay eon giup tang nang suit lfl 37,8 tan/ha len 41,7 tan/ha (tang 10,3%) vi 47.7 tan/ha {tang 26,2%) lan lUdt d 2 cong thflc GSSG x2 vi GSSG x3.
Ovy Dong Xuan, Ipi nhuin lang them d cdng thflc bo sung 2 lan dat 11.2 trieu ddng/ha va d cdng thflc GSSG x3 la
•W,\ lri?u dong/ha so vdi doi chflng (gia ban trung binh 6.000 ddng/kg).
Tfl khda: Cai bip, glutathione, GSSG, ning suat, phan bdn la I.DATVANDE
Cii bip {Brassica oleracea nhdm Capitala) thudc hp Cai (hay hp Thap tfl - Brassicaceae/Cruciferae) cd ngudn gdc tfl vung Dia Trung Hii, cd hp gan vdi sup IP va cai thao, Ii cay thin thao hai la mam, sdng hai nam. Cac la cai bip tao thinh mdt cum die trflng hinh cau, mau xanh, do {tim) hay xanh nhat (tring), tuy tflng gidng. d Viet Nam, cai bip la mdt trong nhflng loai rau pho bien, dflpc trdng nhieu d Lim Ddng, Hi Npi, Hai Phdng, Hai Dflpng vi Hflng Yen (Le Thi Khinh, 2009). Theo sd lieu thdng kedien tich cii bip vi cic cay trdng hp cii nam 2017 d^t 37.413 ha vdi tong sin Iflpng dat 976.210 tan (FAOSTAT, 2019).
Viee bd sung phan bdn la giup cung cap dinh dfldng cho cay trdng trflc tiep qua be mat la. Cac khoang chat trong phin bdn li dflpc cay hap thu mpt phan qua khi khdng vi phan Idn qua Idp bieu bi. Trong mdt vai trfldng hpp, cay cd the hap thu qua ldp vd gd. Them vao dd, phin bdn la kich thich kha nang hap thu chat dinh dfldng cua re tfl dung dich dat (Kannan, 2009; Fernandez and Eichert, 2009;
Kuepper, 2003; Lester et ai, 2006). Trong thinh phan phan bdn la ngoii cic nguyen td da Iflpng nhfl N, P, K cdn eo cac nguyen td trung lupng vi vi Iflpng quan trpng nhfl Fe, Zn, Cu, Mg,... Do dd, phan bdn la cd the bo sung trflc tiep cac chat nay giup dap flng du nhu cau va can ddi dinh dfldng cho ciy tuy tflng giai doan sinh trUdng. Cac nghien cflu trong va ngoai nudc da cho thay hieu qua kinh te cua phan bdn thdng qua tang nang suit tren nhieu ciy trdng khic nhau (Bui Huy Hien va ctv., 2013;
Vu Thi Thanh Thuy vi ctv., 2015; Le Thi Nguyet va Tang Thi Hanh, 2018).
Glutathione la mdt dang pep-tit nhd chfla lflu huynh tfl nhien trong te bao vdi cdng thflc y-I'glutamyl-l-cysteinyTglycine. Cic nghien cflu da cho thay glutathione ddng vai trd quan trpng trong viec bao ve te bao khdi cac yeu td d x y hda vi giup duy tri cin bing d-xy hda khfl {Forman et al, 2010;
Hasanuzzaman et ai. 2017). Glutathione bao ve cac thanh phan quan trong cua te bao khdi cac cic loai chat oxy hoat hda nhfl cic gdc tfl do, peroxit, peroxy hda lipid va kim loai nang thdng qua qua trinh
' Phdng Thi nghiem Trpng diem Cdng nghe Te bao thflc vat, Vien Di truyen Nong nghiep
iop chi Khoa hoc :.. ng ngre Nong ngnijp Viet ^ J - - -'L^
khfl cac lien ket disulfua hinh thanh ben trong cav protein te bao chat thanh c>'stein bing each ddng vai trd nhfl mpt chat cho electron. Trong qui trinh nay.
glutathione dUpc chuyen doi thanh dang oxy hda - glutathione disulfua (GSSG).
Glutathione tham gia dieu hda nhieu qua trinh trao ddi chat (Hasanuzzaman ct al.. 2017) vi du nhfl bio ve tinh toan ven cua te bao bang each duy tri trang thai khfl a-tocopherol vi zeaxanthin (mdt chat quan trpng trong chu trinh xanlhophyll), ngan chin sfl bien tinh cua protein trong cac dieu kien stress bang cich bao ve nhdm thiol. Nd cdn la chat cau thinh nen glutathione peroxidase va glutathione S-transferase. Ngoai ra, glutathione ddng vai trd la tien chat cua phytochelatin, glutathione giup loai bd cic kim loai ning bang each vin chuyen va cd lip trong khdng bao. Qui trinh hinh thanh glyoxalase (bao gdm cic enzyme glyoxalase I vi glyoxalase II) d^' giii ddc metbylgiyoxal, cflng can glutathione trong bfldc dau lien.
Nghien cflu ve sfl kel hpp cua phan bon vd co Nano vi phin bdn giau Glutathione tren ngd ngpt cho thay cay chdng chiu man tdt hon (Fadzillah and Sarwar, 2019). Chieu dii re. him Iflpng diep lpc va do md khi khdng d ciy dflpc bdn glutathione deu cao hpn so vdi d ciy doi chflng. Mdt nghien cflu khic lien quan den inh hfldng cua Glutathione sinh khdi, nang suat va cic hoat chat len 2 gidng lfla mi Sakha93 va Gizal68 da cho thay ci ning suat va cic yeu td ndng hpc ting cd y nghia so vdi ddi chflng khi tang ndng dp Glutalione (Mohamed et al, 2014).
II. VATLlfiU VA PHUONG PHAP NGHIEN ClfU 2.1. Vat lieu nghien cflu
Gidng cai bip thfldng mai Fl KA-Cross sfl dung trong nghien cflu nay dflpc sin xuat bdi cdng iy Viet A Seeds.
Phan bdn li GSSG \\'2 (5%) dupc phat tnen bdi tap doan Kaneka, Nhat Ban. Thanh phan cua GSSG W2 gom: 5% glutathione {C^H,,NP|,S, - khdi Ifldng 612.6). quartz {SiO,) dao ddng tfl 66'%. kaolin 25''o (Al,0,.2SiO,.2H,0) va 4% chat khic.
2.2. Phuong phap thi nghiem 2.2.1. Thiet ke thi nghiem
Bd tri thi nghiem: Thi nghi?m dupe ihflc hien theo phflong phap Bd tri khdi hoan toan ngau nhien (Randomized Complete Block design RCB) '••<^' 4 lan nhac. Trong dd. moi d thi nghiem eo dien uch 30 m' (15 m X 2 m) vdi mat dp 4 cay/m" (eay each ciy 50 cm, hang each hang 50 cm). 40 mau d trung tim cua mdi d vdi sd thfl tfl 6 - 25 cua hini; 2 va hing 3 dupc do dem trong qua trinh tien hanh thi nghiem.
- Quy trinh ky thuit: Theo phflong phap canh tic san xuat rau cai bap an toan (Vien Khoa hpc Ndng nghiep Viet Nam. 2014), cu the nhU sau:
+ Phflpng phap canh tic: Dat dflpc len ludng cd chieu cao 20 cm. Dpn sach cic tan dfl thflc vat. Tfldi nfldc cho be mat dat du am.
-I- Phan bdn: Trong thi nghiem nay, phin bdn NPK dflPC bdn trflc tiep cich goc 5 - 7 cm vao cac thdi diem sau 15 ngay, 25 ngiy va 35 ngay sau khi trdng. Lflpng phan bdn cho mdi d thi nghiem 30 m^
nhfl sau: U-re bdn vao 3 giai doan 15 ngay, 25 ngay va 35 ngay sau khi trdng vdi Iflpng phin bdn cho 3 lan cho 30 mMan Iflpt li 210 g, 450 g vi 240 g. Lan dflpc bdn 1 lan duy nhat 1,2 kg li bdn Idt cho 30 m l Kali dupc bdn 180 g, 240 g va 180 g cho 3 lan bdn thuc nhfl tr^n. Tdng Iflpng phan u-re, kali va lan cho 30 m- lan lUdl la 900 g, 600 g, va 1,2 kg.
+ Hat cai bap dflpc fl hat trong I dem trong theo nguyen tac 1 sdi: 2 lanh {nhiet dp dao ddng tfl 28 den 30"C) trong nUdc. Sau dd, hat dupc tfldi nfldc gifl am hang ngay Sau 8 - 10 ngay, hat nay mam. Sau 3 tuan, khi cay cd 5 - 6 la thi dUpc danh tia Irdng ra rupng.
+ Tudi nudc: Sau khi ciy dUpc 1 thing tfl ngay trdng, ludng dupc tUdi tran den khi het se dflpc bd sung.
- Cdng thflc thl nghiem: Cdng thflc thi nghiem dupc bo tri nhfl tdm tat trong bing 1.
Bang 1. Thdi diem vi lieu lUpng bdn bo sung GSSG ciia 3 cong thflc thi nghiem Cdng thflc
Ddi chflng GSSG x:
GSSG x3
2 tudn Nuoe GSSG 0,7 kg/ha GSSG 0,7 kg/ha
Thoi diem phun sau khi 4 tudn Nfldc GSSG 0,7 kg/ha GSSG 0,7 kg/ha
trdng
8 tudn NUdc Nude GSSG 0,7 k^' 1
- Phflang phip bdn GSSG \\'2 Phin bdn GSSG dflpc dflng theo quy trinh khuyen cao cua cdng t\' Kaneka: 0,7 kg/ha pha trong 1.000 lit nUdc, tUong flng 2,1 g GSSG hda trong 3 lit nUdc cho moi d thi nghiem 30 m-. Dung dich phin bdn dfldc phun deu tren mdi d thi nghiem vio chieu mudn.
2.2.2. Thu thdp vdphdn tich solieu a) Tliu thdp sd lieu
Tdng so mau thu thap li 40 mau bao gdm chi tieu ndng hpc cho mdi d thi nghiem dflpc danh dau Iren hinh.
Cic chi tieu ndng hpc dflpc do dem cu the nhfl sau:
- Sd li (la): Dem toin bp li that d cac thdi diem 3, 5 va 6 tuan sau khi trong.
- Dfldng kinh bap (cm): Dfldng kinh rdng nhat cua cii bip do bang thfldc kep cP 300 mm vao cac thdi diem 7, 8, 9, 10 va 12 tuan sau khi trdng.
- Khdi lfldng thfldng pham (lan/ha): Khoi Iflpng ihflPng pham dupc tinh dfla tren khdi Iflpng cua tflng bdp di loai bd la gia va re tai thdi diem 12 tuan sau khi trong.
b) XU ly thong ke
Mdc y nghia thong ke dflpc xac dinh bang each phan tich phflpng sai mdt bien (One-way Analysis of Variance) bing phep so sanh cua Turkey. Mflc dp y nghia dflpc sfl diing la a < 0,05. Phan mem phan tich so lieu la Cropstat 7.0.
2.3. Thdi gian va dia diem nghien cflu Nghien cflu danh gii inh hfldng cua viec bo sung GSSG qua li tdi ning suat cua cay cai bip dfldc thflc hien trong vu Ddng Xuan nam 2018 - 2019 tai xa Song Phfldng, huyen Hoai Dflc, thinh phd Ha Ndi
III. Kel qua vi thao luin 3.1. Cac chi tieu ndng hpc
Cac chi tieu ve ndng hoc nhfl sd lupng la, dfldng kinh bip vi khdi lUpng bip la nhflng chi tieu quan trpng dung de danh gii nang suit cua cac ea\ trdng thu smh khdi nhfl cai bip. Bang 2 cho tha\ sd Iflpng la do d 3 thdi diem sau 3, 5 vi 6 tuan.
Bang 2. Anh hudng cua phan bdn GSSG den sd li cay cai bap qua eac tuan Cdng thflc
Doi chflng GSSGx2 GSSG x3 CV(%) LSD.o.
Sola sau 3 tuan 7,7 ± 0.47 8.0 ± 0.20 8.1 ± 0.30 4,6 96
0.07 Sola sau 5 tuin 15,4 ±0,98 15.7 ±0,47 15.8 ± 0,46
4.5%
0.15 So la sau 6 tuan 19.5 ± 0,60 20.3 ± 0,80 21.1 ±0,70
5.0 96 0,15 Kel qui cho thay d ca 3 thdi diem 3 tuan, 5 luan va 6 tuan sau khi trdng, khdng cd sfl khic bi?t cd y nghia gifla 2 cdng thflc thi nghiem vi ddi chflng.
Den tuan thfl 5, xu hfldng van duy tri nhfl lan do thfl nhal. GSSG x3 va GSSG x2 vdi sd la trung binh la 15,8 la va 15,7 la. Cdng thflc ddi chflng chi la 15,4 li;
khdng cd sfl khic biet rd ret d 2 mflc thong ke khic nhau. GSSG x3 cd 21,1 Ii cao nhat, tiep den GSSG x2 cd 20,3 li. Cudi cimg, ddi chflng chi cd 19,5 la; khac biet khdng tdn lai gifla cac cdng thflc thi nghi?m.
Dieu nay cd the do inh hfldng cua phin bdn li thuc day qui trinh phal trien cua cai bip can cic nguyen td \i lupng nhu S, Zn, Bo va Mo (Naher et al., 2014). Trong dd. Bo anh hfldng trflc tiep den qua trinh sinh trUdng va dan den inh hfldng den ning suit cua cai bip. S va Zn lai inh hfldng den trpng Ifldng khd cua cay.
Bang 3. Anh hUdng cua phan bon GSSG den dudng kinh ciia cai bap Cong thiic
Doi chiing GSSG x2 GSSG x3 CV(%) LSD.,,,
Diidng kinh b4p sau 7 tuan (cm) 4,0 ± 0,14' 5,3 + 0,15' 5,3 ±0,14- 12.36%
0.03
DUdng kinh b i p sau 8 tuan (cm)
5,8 ± 0 , 1 3 ' 6,9 ± 0,21 • 6,9 ± 0 , 2 1 ' 8,54%
0.04
DUdng kinh b i p sau 9 tuan (cm) 8,0 ± 0,23' 10,0 ± 0 , 6 3 ' 10,1 ± 0,47"
10,76%
0,07
Dudng kinh b i p sau 10 tuan (cm) 12,8 ± 0 , 5 5 ' 12,9 ± 0 , 5 0 ' 14,2 ± 0 , 5 5 ' 6,64%
0,19
Dddng kinh b i p sau 12 tuan (cm) 19,0 ± 0,17' 21,2 ± 0 , 2 5 ' 22,2 ± 0,40' 6,56%
0,06 Ghi chu a,b,c:cdcgid tri cd ciing ky hieu thuoc citng mot nhom.
Bang 3 cho thay dfldng kinh cua cai bap qua cic ihdi diem khic nhau. Sau khi phun 2 Ian, dfldng kinh cai bap cd sfl khac biet ve thdng ke, GSSG x2
va GSSG x3 khac biet cd y nghia la 5,3 cm so vdi ddi chflng (4,0 cm). Tuy nhien, gifla 2 cdng thflc khdng cd khac biet. Xu hfldng nay duy tri den sau khi phun
igpchii^-C:', noc Jooj n
lan 3 mpt tuan. Den tuan thfl 10, sau khi phun lan thfl 3 hai tuin, GSSG x3 \-Udt len voi mflc y nghia khic bi^t h^n so vdi t.SSG \2 va ddi chflng. GSSG \ 3 CO dudng kinh li 14.2 cm (12% ^o vdi cdng thflc 1 va 13% SO vdi ddi chflng). Sau khi trdng 12 tuan, cd su phan bi?t rd ret ve kich dfldng kinh bap gifla cac cdng thflc. GSSG x3 cd dfldng kinh Idn nhal xap xi 22.2 cm (hpn ddi ehflng 16%). Khac biet so vdi ddi chflng va GSSG x3. GSSG x2 ed dfldng kinh la 21,2 cm vi ddi chflng chi ed dfldng kinh la 19,0 cm.
Dieu nay gidng vdi sfl anh hudng den sd li, sau 2 tuan phin bdn mdi anh hudng den sinh trUdng cua ciy trdng.
3.2. Nang suit cua cii bip
Bang 4 cho thay anh hudng lich cflc cua phan bdn GSSG den nang sual eai bip. Nang suat trung binh cua cii hip ting rd ret d cdng thflc thi nghiem bd sung GSSG: CSSc; x3 tang 26.2% (1,59 kg/ciy) va GSSG x2 ling 10,3% (1,39 kg/ciy) so vdi doi chflng {1,26 kg/ciy). Nang suit ihudng pham thu dflpc tfl cdng thflc GSSG x^ (47,7 tan/ha) va GSSG x2 (41,7 lan/ha) khac bi^l cd y nghia so vdi ddi chung (37,8 lan/ha).
Bang 4. Anh hUdng cua phan bdn GSSG den nang sual cii bip ' Khdi lupng Ning suit Tl le I Cdng thflc bip trung bip tang I binh (kg/ciy) (lan/ha) nangsuat I Doi chflng 1.26 10.09 37.8 ' G S S G X 2 1.39 ±0.04 -11,7 10.3%
' GSSG x3 1,59 ± 0,20 47,7 26,2%
C\'("6J It'.-}",, ISD,,,, 0.04
De danh gii hieu qui kinh le cua viec sfl dung phin bdn GSSG. ehung tdi da long hpp, so sinh chi phi va lpi nhuin thu dflpc tfl mdi cdng thflc thi nghiem nhu trong bang 5. \'ai mflc gii ban phin bdn GSSG dfl kien d mflc 5.000.000 ddng/kg, chi phi bd sung cho phan bdn vdi cdng thflc GSSG x2 lan va x3 lan lan IflpI li 7 trieu ddng (1,4 kg) va 10,5 trieu ddng (2.1 kg). Ap dung cac phfldng in gii thu mua sin pham thap (4.000 ddng/kg). trung binh (6.000 ddng/kg) \ a eao (8.000 ddng/kg), ket qui cho thay cdng thflc thi nghiem bdn bo sung GSSG eho hieu qua kinh te tang dn dmh tfl 29.5% den 38.1% d ca 3 mflc gia thu mua san pham so vdi ddi chflng sau khi da irfl chi phi phat sinh d cdng thflc bdn 3 lan.
Cdng thflc chi bdn GSSG 2 lan cho hk L. qua kmh te nhUng mflc tang thap hdn. tu 6'\. den ,'^,'^4%. '"^
thupc vao gi.i thu mua san phjim.
Gia thinh 1 kg cii bip mua t^i ruong vfl l""'^":-^
nim 2018 dupc chia lam 3 trUdng hpp khae nhau li:
gia thap, trung binh vi cao lan lUpt la 4 ('00 ddng/kg, 6.000 ddng/kg va 8 000 ddng/kg. Cf da\, chflng ldi tinh mflc 200.000 ddng/cdng va khdng tinh ehi phi thue dat.
0 mflc gii thap nhit. lpi nhu^n cua cdng thflc 1 cao hdn mflc ddi chflng chi la 3.200,000 ddng/ha va cdng thflc 2 cao hdn ddi chflng la 20.100.000 dong/ha. 6 mflc gia bin trung binh, cdng thflc 1 va cdng thflc 2 lan lUpt thu dUpc 11.200.000 ddng/ha
\'a 40.100.000 dong/ha. Q mflc gia ban cao nhi't, Ipi nhuin tang len so vdi doi chflng cua cdng thflc 1 {GSSG x2) li 19.800.000 dong/ha va cua cdng thflc 2 (GSSG x3) li 60.100.000 ddng/ha (Bang 5).
Nghien cflu sfl dung phan bdn la cho mpt vai loai rau an la pho bien: Rau mudng, mdng tdi, hinh Boa rd, rau khoai va rau ren dd cua nhdm tac gia Nguyen Dinh Thi vi cpng tic vien (2013) cung cho thay ket qua tfldng tfl ve tang nang suit khi sfl dung phin bdn la. Nhdm tac gia rut ra dflpc ket luan tfl thi nghiem nay: Ning suat cac loai rau thi nghiem lang 16,5% - 27,2% khi dflpc phun Maya&TI. Tien lai khi phun Maya&Tl cho rau mudng trong vu He Thu lflpng dfldng 11,6 trieu dong/ha.
Theo Narayan va cpng tac vien (2016), tie gii cua bai bao danh gia anh hfldng cua phan bdn la len qua trinh sinh trfldng, phat trien va sd lupng hat cua cay cii bap Golden Acre da sfl dung nam loai phan bdn la. Chieu cao cay, sd nhanh, sd la cung nhfl nang suat hat cho thay sU ting len khi dung phin bdn la d cic mflc khic nhau. Ket qui cho thay lpi nhuan thu duoc khi sfl dung phan bdn li NPK (15 - 15 - 30) la 47 trieu dong/ha. Ve ciy hp Hda Thao, nhdm tac gii Le Thi Nguyet va Ting Thi Hanh (2018) cd bao cao ve inh hudng cua phin bdn la den sinh trudng, phal tnen va nang suit gidng lua BCI5 tren 2 mflc bdn dam khic nhau tai V Yen, tinh Nam Dinh. Nang suit thflc thu cao hon ddi chflng d ci vu Xuin va vu Mua Tat ci cac nghien cflu tren deu cho thay ket qua ting ning suat phu hpp vdi khao sat ciia tic gii Bui Huy Hien vi cpng tic vien (2013) ve Unh h,[^L sfl dung phin bdn la tai Viel Nam tronn t-iai Hr, 2000-2013.
TapchiKhojno: 'i -g-e '•iong righiep iiei Nani -
Bang 5. Hi^u qua kinh te cua viec sfl d u n g phan bdn GSSG 2
Npi d u n g
Chi phi CO dinh
D o n vi Sd lUpng D o n gia
-3 lan mpt xii so vdi doi chflng DVT. dong/ha j ^ , . . , C d n g thflc C o n e thflc
^ " • " • " S GSSGX2 GSSGX3 Thdnh tien Vidnh tien Thdnh tien
1 1.1 1.2 1.3 1.4 1.5 2 2.1 2.2 2.3 2 4 2.5 2.6 B 1 2 3 C 1 2
3
4 D 1
3
Tien cong td liic gieo den Ic Gieo hat va cham soc cay non Lam dat Tddi L^mcd Bon phan
ic thu hoai cong cong cong cdng cdng Tien mua phan bdn va hoa chat Phan chudng hoai muc Super lan Ure Kali
Thuoc bao ve thdc vat Hat giong Chi phi bd sung Phun phan bdn Phan bon GSSG Thu hoach Thu nhdp Nang suat (tan/ha) Gia ban mdc thap 4.000 dong/kg
Gia ban m d c trung binh 6.000 dong/kg Gia ban m d c cao 8.000 dong/kg
Ldi nhitdn (D = C - A - B) Gia ban m d c thap 4.000 dong/kg
Gia ban mdc trung binh 6.000 dong/kg Gia ban mdc cao 8.000 dong/kg
kg kg kg kg lan g
cong kg cong
tan d
d
d
d
d
d
ch (gieo hat 60 30 36 60 30
20,000 300 300 200 3 200
12
105
37,7
41,7
47,7
, lam dat, tudi 200.000 200.000 200.000 200.000 200.000
1.000 10.000 10.000 15.000 400.000 7.000
200.000 10.000.000 200.000
4.000
6.000
8.000
cay, bon phan va lam co)
2.400.000
21.000 000
37,7 150.800.000
226.200.000
301.600.000
52.600.000
128.000.000
203.400.000 12.000.000
6.000.000 7.200.000 12.000.000 6.000.000
20.000.000 3.000.000 3.000.000 3.000.000 1.200.000 1.400.000
2.400.000 7.000.000 26.800.000
41,7 166.800.000
250.200.000
333.600.000
55.800.000 (+ 6%) 139.200.000 (+8,75%) 221.600.000 (+ 8,94%)
2.400.000 10.500.000 30.400.000
47,7 190.800.000
286 200.000
381.600.000
72.700.000 (+38,21%) 168 100.000
(+31,32%) 263.500.000 (+29,54%)
IV KET LUAN
Phan bdn GSSG W2 cd anh hfldng tich cflc den qua trinh sinh trfldng cua cii bap. Sau lan phun thfl 3 hai tuan, dfldng kinh bip mdi cd sfl khac biet gifla cdng thflc GSSG x2 va GSSG x3. Ning suat va hieu qua kinh te cao nhat khi bd sung GSSG 3 Ian (47.7 tan/ha. lpi nhuin 168,1 trieu ddng/ha)
so vdi phun GSSG 2 lan {41,7 tan/ha, Ipi nhuin 139,2 trieu/ha) va ddi chflng (37,8 tan/ha, lpi nhuan 128 trieu ddng/ha). d mflc gia bin trung binh 6.000 ddng/kg, cdng thflc GSSG x2 va GSSG x3 lan Iflpl thu dflpc lpi nhuan hdn cao hdn mflc ddi chflng 11,2 trieu ddng/ha va 40,1 trieu ddng/ha vio vii Ddng Xuan.
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Effect of glutathione organic fertilizer on cabbage
Nguyen Anh Vu, Le Ngoc Tuan. Nguyen Hung. Nguyen Van Dong
Cabbage is one of the popular vegetables, high-rielding. easy-processing and friendly for consumers. In this experiment, the effect of GSSG foliar fertilizer conlaining 5% glutathione on the growth and developmenl of cabbage was evaluated. GSSG was additionally applied by spraying 2 times (GSSG x2) or 3 times (GSSG x3) at 2; 4 and 8 weeks after planting at a dose of 0.7 kg/ha/applieation compared to the control without GSSG application The results showed dial GSSG supplementation enhanced cabbage development. Head diameters showed difference between controls and treatments from 7 weeks after planting until harvest where GSSG x2 and GSSG x3 were 11%
and 16%. respectively bigger than that of the control. In addition, this foliar fertilizer also increased the yield from 37 8 tons/ha to 41 7 tons/ha (up 10.3%) and 47 7 tons/ha (up 26.2%) in GSSG x2 and GSSG x3 In the winter- spring season, the additional profits was 11.2 \ ' N D million/ha for GSSG x2 and 40.1 VND million/ha for GSSG x3 (selling price of 6,000 X'ND/kg) in comparison with ihe control.
Keywords: Cabbage, foliar fertilizer, glutathione, GSSG. yield Ngay n h a n bai: 2 0 / 1 2 / 2 0 1 9
Ngay p h a n bien: 02/01/2020
Ngfldi p h a n bi^n: PGS. TS. P h a m Q u a n j ; } J,, N g i y duyet d i n g : 13/01/2020
