Nguyen Quang Hiing Tgp chi KHOA HOC & CONG NGHE
NGHIEN ClTU KHA NANG SINH TRU'ANG, PHAT TRIEN
CUA M O T SO GIONG KHOAI LANG T H E O HU"dNG SAN XUAT HANG HOA CHO VUNG DAT BAI VEN S 6 N G HONG
Nguyen Quang Hiing Vien Nghien cuu va Phdi tnin Viing - BQ Kitoa hoc vd Cong nghe
TOMTAT
Thi nghiem tien hanh nghien ciiu tinh hinh sinh tmdng, phat trien ciia 7 giong khoai lang. Ket qua nghien ciiu cho thay cac giong c6 hinh dgng than chii yeu la dang than nita dilng va bo Ian, mau sac than tir xanh nhat den tim. Mau s5c la trudng thanh chii yeu la mau xanh, ngoai trir gidng KL5 CO mau sic than va mau sac la non tir tim nhgt den tim dgm, Co 3 hinh dang la chinh la dang hinh tim, xe thiiy sau, biu dgc. Hau het cac gilng theo doi deu bj sau due day va bp ha gay hai d miic tmng binh, frong do cac giong bj gay hgi nang hon nhu KB 1, KL5. Nhom giong co nang suat cii thge diu dgt kha cao nhu: KL2d-209, KL5, Hoang Long (9,28 - 10,45 tin/ha trong vu xuan va 12,18 -14,32 tan/ha trong vg Dong), Nh6m gilng cd nang suat trang binh nhu KLC266, KLC3 (9,15- 9,77 tin/ha vu xuan va 11,34 -12,18 tin/ha trong vu Thu Ddng), Gilng HL491 co nang suat thuc thu cii thSp nhit dat 7,32 tin/ha vy xuan v i 9,24 tan trong vu Thu Dong. Cac giong thieli hgp vdi an tuoi gom gilng KLC266, KLC3, va Hoang Long Dong Thai; san xuat hang hoa vdi muc dich che bien nen sir dun^ giong KL20-209.
Tir khoa: Khoai lang, sdn xudt hdng hoa, ddt bai ven song Hong, nangsuat, phdt triin
DAT VAN DE
Cay Khoai lang (Ipomoea batatas L.) Ia mpt frong nhiing loai cay cd cu cd gia tri kinh te cao, dugc coi la cay da tic dung: Vira la thuc pham nhu an tuoi (cii, la), vira lam nguyen liiu cho chl biln (tinh bdt, rugu, cdn, xi rd, nude giai khit, banh keo, mi, mign,..) lim phu gia dugc phim, mang phii sinh hpc, lim thiic an cho chin nudi.
Khoai lang phat trien dugc fren nhigu logi dit khac nhau tu sa cau cat den set ning, Tuy nhign, logi dit thich hgp nhit vin la toi xop, thoang khi, mau md nhieu huu co cd sa ciu tir cit din thit pha cit [5].
0 vimg dong bing sdng Hdng khoai lang
dugc trdng chii yeu trgn dit liia trong ca cau cay vu Ddng hoac vu Xuin, dit bai ven sdng, dit ven biln hay dat khdng chu d^ng nude hoac frong xen canh duoi mgt sd ciy trdng khac. Song viec sii dung gidng khoai lang, xac dinh co cau luin canh chua hgp Iy, khdng dap ling dugc nhu cau thi trudng ngn hi^u qui kinh tl chua cao. Do viy dien tich trlng khoai lang ciia Vimg cd chilu hudng giam xudng mgt each ro ret (nam 2008 dien tich frong
' Tel. 0968 598S38. Email nguyengiianghiingiiiaj@gmiiil ct
khoai lang cua Vimg tir 32,3 nghin ha da giim xudng cdn 21,2 nghin ha nam 2015, giam 11,1 nghin ha) [2].
Dg tang dugc ning suit va sin lugng khoai lang cac vimg dat bii ven sdng Hdng ndi rigng vi vimg ddng bang song Hdng ndi chung ngoai vipc dinh gia cac yeu to kinh te xa hgi, thi trudng dl quy hoach thi cin phai xic dinh bg gidng tot, phu hgp vdi dieu kipn sinh thii ciia tiing dia phuong va tign hanh ddng bd cac khiu kS' thuat then chdt nhu phan bdn, thdi vg, mat dg trdng,... cho timg nhdm gilng theo muc dich sii dung nham ting thu nhap va higu qua kinh tg ciia ciy khoai lang tiln tdi xiy dung viing sin xuit khoai lang hang hda cho viing.
Xuit phit tir nhiing yeu ciu trgn cho thiy, vipc Iga chgn gidng khoai lang cd frign vgng, chat lugng cao phii hgp vdi thi trudng npi tieu va mot sd thi trudng xuit khiu la cSn thilt nhim ehuygn doi ca cau cay frong viing ddng bing sdng Hdng.
VAT LIEU, NOl DUNG VA PHUONG PHAP NGHIEN ClTU
Vat lieu nghien cmi gom: 07 gidng khoai
lang thu thgp tir Vipn Cay Luong thuc va ciy
61
Nguyen Quang Hiing Tgp chi KHOA HQC & CONG NGHh Thuc pham, huyen Ba Vi -Ha Ndi, bao gdm;
KLC3, KL5, kLC266, KL2(J209, KBI, HL491, Hoang Long Ddng Thai.
Noi dung nghien ciiu:
- Nghien cuu dac digm thuc vat hgc ciia cac gidng khoai lang tham gia thi nghiem - Nghien cihi thai gian sinh tru'dng ciia cic gidng khoai lang thi nghigm
- Nghien cim nang suat va chit lugng cic gidng khoai lang thi nghiem
Thdi gian nghiSn ciiu: Tir thing 2/2016- 2/2017.
Dja diem nghien cii'u: Huyen Ygn Lge - Vinh Phiic.
Phuang phap nghign ciiu: Thi nghigm dugc bd tri theo khdi ngau nhign hoin chinh (RCBD) vdi 3 Iin nhic lgi, dipn tich d thi nghiem la 20 m^.
Cac chi tigu va phuong phap theo ddi theo Quy chuin ky thuit qudc gia ve khio nghiem gia fri canh tac va gia tn sit dung ciia gidng khoai lang QCVN 01- 60 : 2011/BNNPTNT [1].
KET QUA VA THAO LUAN
D^c diem thirc vat hoc cua cac giong tham gia thi nghigm
Nghign cuu die diem hinh thii de phin biet su khac nhau giiia cic gidng khoai lang, dong thdi diy cGng la tinh trgng ma thi trudng quan tim. Die diem hinh thai gidng khoai lang dugc thg hien d miu sac Ii, miu sic thin, hinh dang phien la,...Ket qua nghien ciiu die diem hlnh thai cac gidng tham gia thi nghiem dugc thg hien d bang I.
Kgt qua bang 1 cho thay:
Ve dgc digm hinh dgng thin: Hinh dang than ciia cac gidng khoai lang cd 2 dang chi'nh la:
Bang I, Mpt so dgc diim hinh thai
than bd va than niia dung. Trong dd, co 3 gidng than bd lan la KLC266, Hoing Long Ddng Thii va HL491. Cac gidng con Igi co dang thin nua diing. Qua thuc tg san xuit cho thay, nhin chung kieu than diing va niia diing cd khi nang cho ning suit cao hon kieu than bd trii rgng. Vi nd cd tigm nang quang hpp va tgo tan che phu tdt cho gdc cay, dinh dudng tich IQy ve cii thuin lgi hon va nhieu hon [3].
Ve miu sac thin: Cac gidng cd mau sac thin da dang, tir mau xanh nhat dgn tim. Mau sac than phd bign nhat la mau xanh, mile dd xanh nhat hay dgm cdn tuy thudc vao gidng. Trong 7 gidng thi nghiem cd 3 gidng than mau xanh, cd 2 gidng than miu tim, 1 gidng thin miu xanh pha tim vi duy nhat 1 gidng than va la cd mau tim dim (gidng KL5). Day la I frong nhiing cin cii dg phan biet giiia cic gidng khoai lang,
v l mau sic li: Hinh dgng, mau sic la ciing la mgt frong cic can cur dl phan bipt dugc cac gidng khoai lang. Mau sac la cd the thay ddi theo giai doan sinh trudng ciia cay, mau sic li non cd mau tir xanh, xanh tim den tim. Giong KLC3, HL491, KL5 cd mau xajih. Gidng KBI vi KL20-209 cd mau tim, cac gidng cdn lgi cd miu xanh tim, Miu sac li trudng thinh chu ylu la mau xanh, ngoai trir giong KL5 cd miu sic thin va mau sic la non tii tim nhat dgn tim dam,
Ve hinh dang la: Diy la chi tieu hinh thii quan trpng va de dang phan biet nhat gitla cdc gidng. Trong 7 gidng thi nghipm cd 3 hinh dang la chfnh la dang hinh tim, xe thiiy sau, biu due.
cua cdc giong khoai lang thi nghiem TT
I 2 3 4 5 6 7
Giong Chi tieu KLC3 KLC266 ffaanglcngBT KL20-209 HU91 KBI KL5
Dgng
Nira diing Bo lan Bo lan NuradiJng
Balan Niia diing Nua dung
Mau sac
Xanh Tim Tim Xanh tim
Xanh Tim dam
Hinh dang Tim Xe thliy sau
Tim tron Biiu due Tim Tim Xe thuy sau
La Miu sac la tnrdne thanh
Xanh Xanh Xanh Xanh Xanh Xanh nh^t Xanh tham
Mail s3c 1^ ngon Mau xanh Xanh tim Xanh tim Tim Xanh Mau tim
Xanh
Cli Mau sac
vo Hongnh^
Do hong Hong
Do Tim Vangnh^
Do Mm Mau sSc
ruOt Vang Vang Vang Vang nhat
TimdSm Ti5ngngi Vang
Nguyen Quang Hiing Tgp chi KHOA HOC & CONG NGHE
Mau sac cii da dang nhu: Tim, dd, hdng nhat, vang nhat, rieng gidng HL49I cd mau sic vd cu va ruot Cli la die tnmg rigng cua gidng la mau tim dam.
Thcri gian sinh truong cua cac gilng tham gia thi nghiem
Nghien ciiu thdi gian sinh trudng ciia cac gidng khoai lang dg tinh toan, bd tri co ciu thai vu trdng cho hgp Iy, Iam can cii khuyen cao nguoi din, kgt qua theo doi thdi gian sinh trudng cua cac giong khoai lang dugc thi hign qua bang 2.
Bang 2. Th&i gian sinh tru&ng cua cdc giong khoai lang trong thi nghiim
TT
1 2 3 4 5 6 7
\ Chi tieu
Gi6ng \ KLC3
KLC266 Hoang Laig(DQ KL20-209 Hl>191 KBI KL5
TrSng d^n b£n re hoi xanh (ngay)
7 8 8 8 9 8 9 Bang 3. Tinh hinh sdu binh hgi
TT
1 2 3 4 5 6 7
\ ^ Sau, b§nh
Gi6ug \ ^
KLC3 KLC266 HoigLciiglpq KL20-209 HU91 KBI KL5
Sau than (%
khombj haf)
5.66 7,55 5,03 5,03 10,06 11.32 9,43
Vu Trong d^n phu kfn luong
17 18 19 18 18 16 18 ' trin cdc
Xuan TrSng din phan ciknh cap 1
45 44 43 43 41 40 41
Th&i gian sinh truvng
(ngay) 130 133 120 128 123 128 134
Trong den bia rlh^i xanh (ngiy)
9 10 11 9 11 9 11
Vu Thu Dong Trong d^n phii kfn lu6ng (ngSy)
19 19 19 20 21 19 21
Trdng d^n phan canh cap 1 (ngav) 48 44 45 45 43 41 46 giong khoai lang trong thi nghiim l\ra chon giong kh Vu XuSn
Bgha
(%
kh6m bj h^i) 3,14 3,14 4,40 3,14 5,03 8,81 7,55
B|nh thdi den
(%
Idiom bi hai)
0,00 0,00 0,00 0,00 0,00 10.06 7,55
B^nh ghe (%
khombj hai)
0,00 0,00 0,00 0,00 0,00 0,00 0,00
Slu Dgc than
(%
kh6mbj haO
1,26 3,14 5,03 3,77 3,14 5,03 4,40
Vu Thu Bong B9ha
(%
khdmbi hai)
4,40 5,03 7,55 3,77 5,66 7,55 8,81
B^nh thoi den
(%
khom bi hai)
0,00 0,00 0,00 0,00 0,00 10.69 7,55
ThM gian sinh trirong (ngay) 113 112 105 112 111 102 118 Dai lang
B^nh ghe (%
kh6m bj hji) 0,00 3,14 0,00 0,00 0,00 5,03 4,40
So lipu bing 2 cho thay, thdi gian tir frong
din ben rl, hdi xanh ciia cic giong khoai lang thi nghipm bien dgng tir 7 - 9 ngay frong vu Xuan, trong vu Thu Ddng thdi gian ben rl hdi xanh ciia cac gidng lau ban vy Xuan, tnmg binh khoang 02 ngiy.
Thudng sau frdng 40 ngiy frd di, cac giong khoai se phin canh cip I. S6 Heu bang 2 cho thiy, cic gidng khoai lang frong vu xuin cd thdi gian tii khi frdng den phan canh cip I la tir 40-45 ngay; gidng HL49I, KBI, KL5 cd thdi gian phan canh cip I nhanh hon giong DC, gilng KLC266 va KLC3 cd didi gian phan canh cap I lau hon gidng DC. Trong vu Ddng thdi gian phan canh cap I ciia cac gidng liu hon frong vu Xuan, thdi gian tir frong den phin canh cap I cua cac gidng la tir 41 - 48 ngiy.
Thdi gian sinh trudng ciia cac gilng khoai lang dugc tinh tir khi trdng dgn thu hogch.
Cic gidng khoai lang trong thi nghiem d vu Xuin cd thdi gian sinh trudng dai hon so vdi vu Ddng, thdi gian sinh trudng trung binh frong vu xuan la tir 120 -134 ngay, gidng Hoang Long DC cd thdi gian sinh frudng ngin nhit la 120 ngay, gilng KL5 cd thdi gian sinh trudng lau nhit la 134 ngay. Trong vu Ddng thai gian sinh trudng cua cac gidng trung binh tir 102 - 118 ngiy.
Kha nang chong chju sau benh hai
Khoai lang la mgt ciy trdng it bi nhilm siu
benh. Tuy nhign, qua theo doi chiing tdi
thay xuit hipn mpt sd loai sau bpnh khac
nhau. Ket qui thg hipn d bang 3. Thanh phan
63
Nguyen Quang Himg Tgp chl KHOA HOC & CONG NGHlj l08(,oo_i: 0 1 - 0 0 sau, benh hai frgn c i c gidng khoai lang
gom 4 logi chinh la bpnh t h l i den, benh ghe, s i u due than v i bg ha.
Qua bang 3 , cho t h i y miic dp nhiem sau benh hai chinh ciia cac ddng, g i l n g thi nghiem. Cac giong d l u bi sau due than g i y hai d miic do (5,03 - 11,32%) frong vu x u i n , miic do bi s i u due than g i y hai it hon d trong vu Thu ddng (1,26-5,03%). Cac gidng khoai lang bi nhiem Bp ha d miic nhe. Ddi vdi Benh soan la v i thdi den qua theo doi thi nghipm chting tdi t h i y 2 bpnh nay c o b i n khdng xuat hipn, ngogi tru giong K L 5 , K B I va KLC266. Trong c i c g i l n g thi nghiem thi gidng KL5 va gidng KBI l i hai gidng cd k h i nang chdng chiu sau bpnh hgi kem n h i t .
N i n g s u i t va cac yeu t l cSu t h a n h n a n g s u i t N i n g s u i t ciia cay frdng la mgt chi tieu quan frpng, nd p h i n i n h kgt qua cua q u i trinh sinh trudng, phat trign, ddng hoa va tich luy c h i t dinh duong ciia c i y . Ket q u i theo ddi nang s u i t va cac y l u td cau thanh n i n g s u i t dugc the hien d bang 4.
K i t qua b i n g 4 cho t h i y : Sd cii/ goc cua c i c giong khdng chgnh lech nhau nhigu, dao ddng tir 3,73 - 4,87cu/g6c frong vg X u i n v i 3,8 - 5,27 c u / g i c frong vu Ddng. Trong vg Xuan, giong K L C 3 , KL5 cd so cii/gdc cao ban g i l n g D C nhimg khdng c h i c c h i n d dp tin c i y 9 5 % , giong KL202D9 cd so cu l i 4,87 cii/gdc cao hern c h i c chan giong ddi chimg va c i c giong K B I , HI491, KLC266 c miic tin cgy 9 5 % . Trong vu Dong, gidng KL20209 cd sd cu la
Bang 4. Ndng sudt vd cdc yiu to cdu thanh ndng sudt cua mgt
5,27 cu/gdc cao hon c h i c chan gidng dli chung va cac gidng k h i c , ngogi trii giQng K L C 2 6 6 d miic tin cay 9 5 % ; KL5 cd s6 cii/goc it nhat la 3,87 cii/ gdc, tigp din la HL491 3,8 cii/gdc.
Nang s u i t thge thu ciia cac gidng khoai lang frong vu X u i n dao ddng t u 7,32-10,45 tan/ha..^
Gidng KL20-209 cd nang s u i t thuc thu dat cao n h i t (10,45 tin/ha, vu xuan va 14,32 tin trong vu Thu Ddng), day la gidng cd ning s u i t , tuy nhign sd lugng cii khdng ding dSu, hinh dgng cii frdn to, thich hgp cho sin xudt c h l biln. T i l p d i n la giong KL5, dgt 9,87 tin/ha, vg x u i n va 12,63 tin/ha trong v\i thu ddng, Mac dii nang s u i t cac giong n i y dgt kha cao nhung ciing chua the hien hgt tiem nang n i n g s u i t cvta gidng. T i l m nang nang s u i t gidng KL5 dat tir 18-20 tin/ha, KL20-209 cd t h i dat 14-23 tin/ha [4]. Cac gidng cd nang s u i t thuc thu trung binh nhu K L C 3 , K L C 2 6 6 , H o a n g Long D C (8,47- 9.28 tin/ha, vu X u a n va 11,34 - 12,53 tinAia trongi.
vg Thu Ddng), N a n g s u i t t h i p nhap d cac g i l n g H L 4 9 I v a K B I .
Bk cd thg phat trign khoai lang thanh hang hda, ngoai vipc quan t i m ddn nang suat can phai quan t i m nghign ciiu tuygn chpn giong cd c h i t lugng tot dap img d u g c thi hilu ciia ngudi tieu dimg ciing la dich cua nha nghien cuu va ngudi san xuat. Danh gia chat luong cac g i l n g khoai lang thi nghiem dupc the hien frong b i n g 5.
5 giong khoai lang thi nghiim
TT 1 2 3 4 5 6 7
Giong KLC3 KLC266 Hoang lingPC) KL20-209 HU91 KBI KL5 LSD.05 CV%
So cu/goc
(Cli) 4,60 4,27 4,47 4.87 3,73 3,87 4,60 0,37 5,8
V u xufin Khoi luyng cu/g6c (g)
343,47 366,87 381,20 429,47 309,73 354,33 398,13 52,53 9,8
N S L T cu ( t ^ n / h a )
9,15 9,77 10,16 11,44 8,25 9,44 10.61
N S T T cu ( t a n / h a )
8,47 8,66 9,28 10,45 7,32 8,27 9,87
So c u / g o c
(en) 4,73 4,93 4,60 5.27 3,87 4,13 3.80 0,4 5,9
V u T h u d o n g Kh^i lirong cu/goc (g>
4 5 9 , 9 3 500.60 498,53 572,53 396,60 437,40 518.73 53,55 7,6
N S L T cii ( t a n / h a )
12,25 13.34 13,28 15,25 10,57 11,65 13,82
NSTT cu (tSn/ha)
11,34 12,18 12.53 14,32 9,24 10,05 12,63
•
Nguyen Quang Hung Tsp chi KHOA HOC & CONG NGHE 168(08): 6 1 - 6 6 Bang 5, Ket qud
T T Giong 1 KLC3 2 KLC266 3 Hoang Long 4 KL20- 209 S HL491 6 KBI 7 KLS
nghien cuu chdt luong cd kht Bo ngot
3 3 3 3 5 5 3
Vu Xuan Bobof
3 3 3 3 3 3 3
iai lang ludc bdng phucmg phdp thu nim (cdm quan) D$x(r
5 5 S 5 3 3 5
Do ngot 3 1 1 3 5 5 3
Vu Thu Bong D$bdr
3 3 3 3 3 3 3
D $ x o 5 5 5 5 3 3 5 Ghi chu
Dp ngpt D p h ^ Dieml: rat ngpt j Digml: ratbd Diem 3: ngpt Dilm 3: bd Diem S: nhgt | Dilm 5: khong bd
Diem 7: nhao Sau khi thu hoach cu khoai lang k h o i n g 7 ngay, chiing tdi d e m ludc dg danh gia c h i t lugng Cli, giong khoai lang K L C 2 6 6 , K L C 3 , H o i n g Long duprc danh g i i l i i n ngon mieng vi: thjt Cli b d bdt, khdng x o , cd vi ngpt cao.
Gidng khoai lang K L 2 0 - 209, KL5 cd mau s i c vd Cli m i u d o bat mat, rudt mau vang thit cu b d bdt, khdng cd x o va vi ngpt vira phai.
Cac gidng H L 4 9 1 , K B I cd dp ngpt it, an bi x o d u g c n g u d i an danh gia la khdng ngon.
K E T L U A N
Qua thi nghiem danh gia kha n i n g sinh trudng va phat triln cua mpt so gidng khoai lang tai Ygn Lac - Vinh Phiic n a m 2016, chiing tdi nit ra ket luan n h u sau:
Ve d a c diem h i n h t h a i c u a c a c giong k h o a i l a n g t h i n g h i e m : Cac gidng co hinh dang than chii y l u la dang than nita diing va bd lan.
Mau s i c l i trudng thanh chii y l u la mau xanh, ngoai trir gidng K L 5 cd mau s i c t h i n va mau s i c la non tir tim nhat d i n tim dgm. Cd 3 hinh dgng la chinh la dang hinh tim, xe diiiy sau, bail due.
Ve th<ri g i a n sinh t r u o n g c u a cac giong k h o a i l a n g : H a u h i t cac g i l n g cd kha nang sinh trudng, phat trign tdt, thdi gian ben r l hdi xanh nhanh frimg binh tir 7 -9 ngay frong vy xuan va 9-11 n g a y trong vy Ddng.
v l k h a n a n g c h o n g chiu s i u , b e n h h ^ i : Cac giong khoai lang d l u bi s i u dye day v i b o ha gay hai, Trong c i c g i l n g thi nghiem thi g i l n g
Dieml: ratXa Dilm 3 xa Dilm 5: khdng x
KL5 v i gidng KB 1 la hai gidng cd kha nang chdng chiu s i u bgnh hai kem nhat.
v l n a n g s u i t va c a c yeu to c a u t h a n h n i n g s u i t ; Sd Cli/ gdc ciia cac gidng khdng chenh Ipch nhau nhieu, dao ddng tit 3,73 - 4,87cii/g6c frong vy xuan va 3,8 - 5,27 cu/goc frong vu Ddng. Gidng KL20209 dat n i n g s u i t thuc thu cao nhat frong c i hai vu, gidng H L 4 9 I cd nang s u i t thuc thu t h i p nhit, tiep den la gidng K B I
Can Cli v i o k h i n i n g sinh trudng, p h i t trign, chong chiu s i u benh, nang suat va c h i t lup^g cua cac gidng khoai lang thi nghipm chiing tdi khuyen c i o cac giong khoai lang s i n xuat hing hda tgi vimg d i t bai ven sdng Hdng vdi muc dich an tuoi gdm: KLC266, KLC3, Hoing Long Ddng T h i i ; s i n xuit hang hda vdi muc dich c h l bien nen sii dung gidng KL20-209.
TAI L I ? U T H A M K H A O 1, Bp Nong nghigp va Phat tnen Non^ thdn (2011), Quy chuan ky thugt Quoc gia vi khdo nghiim gid trf canh tdc vd gid tri sd- dung cda gidng khoai /angQCVN 01 -60: 2011/BNNPTNT.
2, Niin gidm thong ki cd nu&c ndm 2015, Nxb Thing k e - H a Npi, 2016.
3, Mai Thach Hoanh, Nguyin Cong Vinh (2003), Giong vd ki thugt thdm canh cdy co cii, Nxb Nong nghiep. Ha Noi.
4 Mai Thgch Hoanh,_Nguyen Vilt Hung (2011), Chi tiiu ddnh gid giong vd ky thugt trong cdy co cu, Nxb Nong nghigp, Ha Npi.
5. Trinh Xuan Ngp, Dinh Thi Lpc (2004), Cdy co Cli va ky thugt thdm canh (Quyen 1 Cay khoai lang), Nxb Lao dpng xa hpi,
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Nguyin Quang Hiing Tap chi KHOA HOC & CONG NGH$
S U M M A R Y
STUDY O N T H E G R O W T H A N D D E V E L O P M E N T
OF S O M E S W E E T P O T A T O E S V A R I E T I E S IN T H E D I R E C T I O N OF C O M M E R C I A L P R O D U C T I O N F O R R I P A R I A N L A N D O F R E D RTVER
Nguyen Quang Hung' Insilute of Regional Research and Development - Ministry of Science and Technology Experimental study on the growth and development of seven sweet potato varieties. The results show that the main stem-shaped varieties are semi-vertical and spread, with light green to purple The color of the leaves is mostly green, except the KLS variety has the stem color and young leaves color from light purple to dark purple. There are three main leaf shapes: heart shaped, deep lobe, oval. Almost varieties was infected by sweet potato vine borer (Omphisa anastomosalis Guensee) and sweetpotato weevil Cylas spp Fabricus {moderate to serious level), of which the varieties were more severely damaged such as KBI and KL5. Group of high yields such as KL20- 209, KLS, Hoang Long (9.28 - 10.45 tons/ ha in spring and 12.18-14.32 tons /ha in winter crop) . Moderate yield varieties such as KLC266, KLC3 (9.15-9.77 tons/ ha in spring and 11.34-12.18 tons/ ha in winter crop). The HL49I had the lowest yield of 7,32 tons/ ha in spring and 9.24 tons in winter crop. These varieties KLC266, KLC3, Hoang long Dong Thai are suitable for fresh consumption and KL20-209 variety is for processing purpose.
Keyword: Sweet potatoes. Commercial production, land of red river, productivity. development
Ngdy nh^n bdi:26/6/2017! Ngdy phdn bf?n:06/7/2017; Ngdy duyftdang: 31/7/2017 Tel: 0968 598538, Email [email protected]
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