Nguyen Hung Quang vd Dig Tgp chf KHOA HQC & CONG NGHE 92(04): 31-37
NGHIEN c u t ! ANH Hl/CKNG CUA M Q T SO YEU T O T A C DQNG T 6 I K H A NANG SINH T R U ' d N G , NANG SUAT VA C H A T LU'gfNG CUA CAY C O H O A T R A N G {SPILANTHES ACMELLA MURR)
Nguyin Hung Quang , Nguyen Diic Trudng Trudng Dai hoc Nong Idm - DH Thdi Nguyen TOMTAT
Nghifin ciJTi dugc tien hinh nhim xic dinh ning suit vi chit lugng ciia ciy co hoa tring dudi tic dong ciia cic yeu td nhu mit dd tring, phin bdn vi thdi gian thu cit. Ba thi nghiem dugc tiln hinh bing phuang phip bd tri thi nghiem dong ru^ng. Thi nghifm 1 nghifin cihi inh hudng cua 3 mat do trdng 20 x 30, 30 x 30 vi 30 x 40 cm. Thi nghiem 2 nghien ciiu inh hudng ctia ba miic phin bdn hftu ca 10, 20 vi 30 tin/ha. Thf nghiem 3 nghien cim inh hudng cua khoing cich cit d 40, 50 vi 60 ngiy.
Ket qui nghien cuu chi ra ring: 0 cic m§t dd trdng khic nhau, ciy co hoa tring van sinh trudng vi phit triin tdt vi tdt nhit d khoing cich 30 x 40 cm. Vdi cic mirc phin bdn khic nhau cflng inh hudng rit ldn tdi nang suit vi chit lugng cia cd hoa uing. Mirc phin bdn hftu co tdt nhit trong thi nghiSm 2 li 30 tin/ha. Khoing cich cit khic nhau di cd inh hudng ldn din kha ning tii sinh cua cd. Chilu cao tham cua cd cung tang din theo khoing cich cit tir 40 den 60 ngay. NSng suit d lira cd khoing cich cit 60 ngiy li cao nhit. Cd hoa tring cd ty le vit chat kho vi protein thd kha cao.
Tir khda: Co hoa trdng, khodng cdch Irong. khodng cdch cdt, ndng sudt xanh, ndng sudt ldi sinh DAT VAN DE
'Jddc ta Ii mgt nudc cd khi hau nhiet ddi im, tugc thien nhien uu dai cay coi quanh nam
;anh tdt, nen viec phit trien cac ddng cd la lit sue thugn Igi (Diln Van Hung, 1974 [3]).
Jhung thuc tl la cic ddng cd tu nhien hien ay dang trong tinh trang bi suy thoai nghiem
•gng vl sd Iugng va chat Iugng. Dien tich cic dng cd ngiy cing bi thu hep do dan sd tang hanh va tdc do do thi hoa ngay cing mgnh :yc Chan nudi, 2011 [16])
hue an xanh die biet la cd ddng vai trd quan gng ddi vdi gia siic nhai Igi [2], [5], [8]. Nd thuc an chu ylu chiem 70 - 100% khau tin ciia trau bd [6]. Thuc an xanh cd die em li chua nhieu nudc (60 - 85 %), tham 5on, gia siic thich an, de tieu hoi [2]. Thinh lin xa trong thuc an xanh rit cd y nghTa ddi ri gia siic nhai lgi vi nd khdng chi la nguon ng cap ning Iugng, cic chat dinh dudng,
\ cdn Ii nhan to dim bao he sd choan dg cd jp dg cd hogt dgng binh thudng vi tao udn phan trong rugt gii sau nay (Nguyin ien, 2003) [6]. N I U gia siic dugc an cd nh diy dii thi chiing se sinh trudng, phat In nhanh, chat lugng thit v i siia tot, san
Iugng thit va siJa cao (Doan An, Vo Vin Tri, 1976) [ij, [9.
Cay CO hoa trang {Spilanthes acmella Murr) li loai cay than bui thugc hg Chrysanthemum [10]. Logi cay nay mgc tu nhien quanh nam dgc theo ven dudng qudc Id, dudng tau hoa, soi bai va cac bai dat trdng d ca viing ddng bing cung nhu mien trung du vi mien niii nudc ta [4]. Cd cd nang suit chit xanh tucmg ddi cao, dgc biet Ii vao mua mua (td thing 5 din thing 9), cd khi nang tai sinh nhanh, mdi nim cho khoang 4 - 5 Ida cat [4]. Theo nghien cuu ciia Nguyin Qudc Toan va cs, 2006) [12] cay cd hoa tring cd the cho nang suit chit xanh tu 14 - 17 tin/ha/nam. Cay cd hoa tring cd gia tri dinh dudng tuong ddi cao, theo tic gia Hongthong Phimmasan va Inger Ledin, 2005 [15]; Nguyen Qudc Toan vi cs, 2006 [12] ham Iugng vat chat khd ciia cd 15 - 16 %, protein thd 18 - 18,7 %. Loai cay nay ciing da dugc bd sung trong khiu phan an cho thd cung nhu cac dgng vat an cd khic va cd kit qua sinh trudng tdt [12]. Lugng thdc an logi cd niy su dung den muc 15 % nhu cau vat chat khd cua de sira khdng cd inh hudng xiu din sy tieu hoi v i sue khoe cua de (Ly Thi Luyin va cs, 2010) [4].
31
Nguyen Hung Qiiana vd Dig Tgp chf K! lOA HQC & CONG NGH$
Muc tieu cua nghien ciru
• Xac djnh ning suit va chat lugng ciia cfiy cd hoa tring tgi cic thi nghiffm nghien cdu yeu to anh hudng.
- Tim ra mgt logi thuc in mdi, gdp phan xay dyng giai phip ve thuc in cho gia sue trong miia ddng.
- Lim da dgng ca cau ciy thdc in. gdp phan
\ i o cdng cugc phat triin nginh chin nudi gia siic nhai lgi.
DOI TUQNG, NQI DUNG vA PHUONG P H A P NGHIEN CUU
Doi tugng va pham vi nghien cuu - Xic djnh dugc mat dg, miirc bdn phan hdu ca va khoing each cit cho ning suat cao nhat,
- Xic djnh dugc thanh phan dinh dudng cCia cor dudi tac dgng ciia mat dg, muc bdn phan vi khoing each cat.
Dja diem, thdi gian tien hanh nghien ciru - Dia diem tien hanh nghien cuu: Trung tam Nghien cuu va Phit trien Chan nudi mien niii - thi xa Sdng Cdng - tinh Thii Nguyen.
- Thdi gian nghien cdu: ti' / ^'^^
den ngiy 8/2011.
Ngi dung nghien ciiru
- Xic djnh ning suit, ch/n lugng, kha ni sinh trudng phit triin ciia ciy cd hoa trin 3 mgtdg khic nhau.
- Xac djnh nang suit, chit lugng, kha ni sinh trudng phit trien ciia cay cd hoa trin]
3 muc bdn phan hiJu ca khic nhau.
- Xic dinh ning suit, chat lugng, khi ni sinh trudng phit triin ciia cay cd hoa trin|
3 khoing cich cit khic nhau.
Phirgng p h i p nghien ciru
Cic thi nghiem su dyng phuang phap bl thi nghi?m dong rugng. Trong mgt thi nghii thi moi d trong cimg mgt cong thuc cd d;
tich bing nhau dam bao dg dong deu vl ( yeu to nhu: dieu kien dat dai, khi hgu, ky thi chim sdc, theo ddi, thu cit, dyng cy thi nghip - Thi nghiem 1 - Anh hudng ciia cac n dg: Di?n tich thi nghigm la 72 m^ dugc cl la 9 d. mdi d cd di?n tich 8 m^ va vdi 3 mJt dugc trong thu nghiem tren di^n tich 9 d, n mgt dg trdng dugc lip Igi 3 Ian. Mgt dg tra 20 X 30, 30 \ 30 va 30 x 40 (cm)
Co v^nh
dai
Co vinh dai I
ri III
II III
111 1 1 1 II Co vinh dai
C6 v4nh
dai
- Thi nghiem 2 - Anh hudng ciia cic mdc phan bon hiru co: Di^n tich thi nghiem 90 m du chia ra lam 9 d, mdi d cd di^n tich 10 m^ va 3 cdng thuc bon phan dugc thd nghigm tren di?nti 9 d nay, mdi cdng thuc bdn phan dugc Ijp Igi 3 lin. Vdi ba muc phan bdn: 10, 20 va 30 tin/ha.
C6 vinh
dai
C6 vinh dai A
B C
B C A C6 vinh dai
C A B
C6 vinh '
- Thi nghiem 3 - Anh hudng ciia cic khoang cich cac lira cat: Di?n tich tiif nghiem dugc chia ra lam 9 d, mdi d cd di?n tich 8 m^ vdi 3 khoing each cit khic nhau vi tuac nhicl?
lan. Khoang each cit d 40, 50 va 60 ngay 32
NguySn Hung Quang vd Dig Tap chf KHOA HQC & CONG NOHE 92(04): 3 1 - 3 7
40 50 60
50 60 40
60 40 50
- C i c chi tieu t h e o doi, danh g i i : Chieu cao tham cd (cm); toe dg sinh t r u d n g (cm/ ngay); toe dg tai sinh (cm/ngay); c u d n g dg sinh t r u d n g (kg/ha/ngiy); c u d n g dg tai sinh (kg VCK/ha/ngay);
n a n g s u i t c h i t xanh (kg/m^ hoac tin/ha/Iua); n i n g s u i t V C K (kg/m^ hoac tan/ha); s i n lugng c h i t xanh (tan/ha/nam)
P h m m g p h a p xu- ly so lif u
Sd lieu d u g c t h d n g k e theo p h u a n g p h i p thong ke sinh vgt hgc ciia N g u y i n V i n Thi?n va cs, 2002 [7].
KET QUA NGHIEN CUU VA T H A O LUAN
K e t q u a t h e o d o i c h i e u c a o v a t o e d g s i n h t r i r d n g c u a cd h o a t r a n g d c a c m a t d g t r o n g k h a c n h a u
Bing 1: Chiiu cao, loc dg sinh trudng cua cd hoa Irdng a cdc mat do (cm)
\ Mat d9
!iai doaiN, inh tririhig \ ^ igdy luoi) \
O-IO 1 1 - 2 0 2 1 - 3 0 3 1 - 4 0 4 1 - 5 0 5 1 - 6 0 6 1 - 7 0
L 6 T N I
Bg cao cdy (cm)
17,45'±0.263 25,48"±0,267 35,20'±0,372 54,07"±0,365 60,25'±0,417 66,11'±0,313 69,37'±0,433
T6C dd sinh trirdng (cm/ngdy) 0,72'±0.003 0,69'±0,009 1,02"±0,007 1,8I"±0,004 0,72'±0,006 0,59"±0,007 0,39"iO,007
L6 TN 11
Bg cao cdy (cm)
17,45"±0,263 27,09'±0,237 38,44'±0,287 59,59''±0,484 72,47'±0,395 80,05'±0,403 85,10**0,334
T6C dp sinh trudng (cm/ngdy) 0,72"±0,006 0,92'±0,013 1,15'±0,016 2,06'±0,OI6 1,39*±0,014 0,7l'±0,004 0,52'±0,008
L6 TN 111
Bp cao cdy (cm)
17,58'±0,274 28,56'±0.214 41,28'±0,379 64,28'±0.246 80,05'±0,410 90,27'±0,469 97,36'±0,316
Tdc dg sinh trudng (cm/ngdy) 0,72"±0,004 1,08'±0,015 1,29'±0,017 2,32'±0,014 1.55'±0,007 1,01'±0,015 0.73'±0,007 'neo hdng ngang cung chi lieu cdc sd cd chir cdi khdc nhau thi su sai khdc giira chung Id lit rd ret h<0,05) denrdtrorit (P<0,001)
i^hieu cao tang Ien khi thdi gian tang Ien t u 10 - 70 n g i y . T o e do sinh t r u d n g ciia cd hoa trang d ac giai dogn la k h i c nhau rd. T d c dg sinh t r u d n g cao nhat d Id III, thap nhat d Id I. T d c dg sinh rudng ciia cd cao nhat giai 31 - 4 0 n g i y 1,81 c m / n g i y (Id I), 2,06 c m / n g i y (Id II), 2,32 c m / n g i y ' I d III), Tuy nhien, toe dg phat trien ciia cd hoa trang ciing gidng q u y luat ciia cd hda t h i o khac
'ugc chia thanh 3 giai doan, phu h g p vdi quy lugt sinh t r u d n g ciia David (1993) [14].
ajZet q u a t h e o d d i c h i e u c a o v a t o e d o tai s i n h c u a cd h o a t r a n g
-^ B i n g 2: Chieu cao, tdc do tdi sinh cda co hoa trdng a cdc mat do (cm)
TSC dp sinh trudng (cm/ngdy)
Toe dg sinh 3iai doan t i i sinh Dp cao cay
(ngdy ludi) (cm) Toe dp sinh
tru&ng (cm/ngdy)
Dp cao c&y (cm)
Dp cao cay (cm)
(cm/ngay) 0 - 1 0 15,38'±0,326 0,79"±0,033 16,35'±0,224 0,94''±0,022
11 - 20 25,95'±0,241 1,06'±0,0]9 29,68''±0,227 LSB^iCOOS 2 1 - 3 0 48,07*±0,226 2,2l'±0,018 54,13''±0,206 2,45''±0,011 31 - 40 60,78'iO,248 1,27'±0,014 70,64''±0,238 1,65''±0,009 4 1 - 5 0 68,38°±Q,204 0,76'±0,014 80,17''±0,236 0,95^±Q,013
17,53''±0,146 1,00'±0,015 32,53°±0,223 1,50'±0,012 59,58°±0,241 2,70=±0,009 77,79'±0,332 1,82'=±0,020 89,47'±Q,341 1,17°±Q,015 jjleo hdng ngang cung chi tiiu cdc so co chu- cdi khdc nhau thi stf sai khdc giita chung Id tu ro r^t (P<
15) dinrdtr5rit(P<0,001)
Nguy!n Hung Quang va Dig T?p chl KHOA HQC & C 6 N G N G H $ •' Ket qua cho thay 6 cdc mgt dp khdc nhau thi chieu cao tdi sinh ciing Ichic nh;i 'le: 6
dogn 10 ngiy tuoi, chieu cao tii .sinh cua c6 d m|t dp {I, 2, 3) tirong i>ng li 15,' , '6,35 1 7 , 5 3 c m v 4 A g i a i d o j n 3 0 n g i y t u 6 i 4 8 , 0 7 - 5 4 , 1 3 - 59,58 cm. Chieu cao tai -cuac6<
mgt dQ khic nhau li khic nhau, ket qui phan tich thong ke cho thay s\r sai kha^. ve chieu ca sinh va toe do tai sinh 6 cic mgt dp khic nhau thi khic nhau li khi r9 ret (P<0,01), den rat r (P<0,001). Theo Ly Thj Luyen, 2010 [4] c6 hoa trSng e6 khi ning tai sinh cao, mSi nira khoing 4 - 5 lijra cSt.
Ket qui theo (151 ndng suat v i cu^ng dp sinh trirfrng ciia cfly cd hoa trdng d cfic ma khic nhau
Bing 3: Ndng sual chai xanh, cudng dd sinh trudng. cudng dg Idi sinh cita co hoa trdng
a cdc mgi dg khdc nhau , Luu cfil ThM gian
NSX CDST.CDTS NSX CBST;CDTS NSX CDST:CB (kg/m') (kg/ha/nRiy) (kg/m') (ks/ha/ngiy) (kg/m') (kg4ia/ngi Lita 1 70 l,65'±0,OI8 220,95'±2,542 1,85'±0,0II 263.8|''±I,543 2,08'±0,025 297.62'±3, Lihi2 50 l.84'±0,OI5 368,67"±2,944 2,06**0,025 452,00'±5,099 2,4S'±0,043 496,67**8^
Lira3 50 l,64'±0,011 328,67'±2,160 ],96''±0,0I8 411,33'±3,559 2,3I'±0,029 462,6/45^
Theo hdng ngang ciing chi lieu cdc sd cd cha cdi khdc nhau thi sif sai khdc giita chiing Id tir ro r^
O.OS) tin rat rd rfl (P<0,OOI)
Cuong dp sinh truong, tai sinh binh quan ciia co hoa tring tuan theo quy lugt: Khi mgt cangt thi cucmg dp sinh trucmg va tai sinh cing ting. Dieu nay chung to sv inh huong eiia mat dptr CO den nang suat eiia eo. Ket qua nay cung phii hpp voi thong bio ciia cae nghien cuu chunj cic gidng CO 6 Vift Nam vatren the gioi [1], [2], [4], [11].
Ket qua theo doi toe do va nang suat ciia co hoa trdng if giai doan sinh truvng va tii I
voi lirprng phan bon hihi cff khdc nhau ' Bing 4: Tdc tg vd ndng sudt ciia cd hoa trdng a giai dogn smh truang va tdi sinh
vdi lugng phdn bdn huy co khdc nhau.
Toe as sinh tru*ng (cm/ngiy) O,S5"±0.189 I,07''±0,2I6 1,24'±0.Z|
Toe d§ til sinh (cm/ngiy) 1,17'±0.297 l,39''±0.302 1,66'±0J^
Ning suSt chSt xanh sinh trirfrng (kg/mVliia) 1,67'±0,014 l,94''±0,018 2,29'±0,0fl NSng su^t chat xanh til sinh (kg/m'/liia) l,85'±0,036 2,24''±0,033 2,45'±0,05i TTieo hang ngang cdc chi lieu mang cha cdi khdc nhau Ihi su sai khdc giita chung Id lic rd ret (P< 0, dinrdtrdr4l(P<0,00l)
So li?u bang 4 eho thay chi tieu ve nang suat cua cd hoa trSng o eac mirc phan hihi CO khici li khic nhau ra ret CP<0,05). Cdc cong thire bon nhieu phan hIJu eo cho nSng suat chat xani|
truong vi tdi sinh eao. Nang suat chat xanh cao nhat 6 cong thdc C bon 3( in phan hihi M voi nang suit sinh mrong (2,29 kg/mVlira) va ning suat tai sinh (2,45 kg/m' ,). oj^y ^ d,(
to su anh huong cua cic mirc phan bdn h&u co rit Idn tdi ning suat eiia c.,v od hoa trdng i phan huu co cang tang thi nang suit cing tang vi miic phan v6 co cing giam thi nang suat cJl cQng giim. Ket qua niy phii hpp vdi cae kSt qua trudc diy cua nhieu tie gii „„), • , ^^
giong cd khac [1], [2], [4]. [13].
Nguyin Hung Quang vd Dtg Tgp chi KHOA HQC & CONG NGHE 92(04): 31-37 Ket qua theo doi cirdng d$ sinh tnrdng, tdi sinh va chieu cao tham ciia 2 giong cd thi nghiem
Bing 5: Cudng dp vd chiiu cao thdm ciia co hoa trdng a giai dogn sinh Iruang vd tdi sinh vdi lutpig phdn bdn huu ca khdc nhau
L6TNA L6TNB L6TNC
Cirdng dO sinh trudng (kg/ha/ngiy) 238,57'±2,020 277,62''±2,542 326,67'±2,542 Cudng d9 tii sinh (kg/ha/ngiy) 369,3 r±7,145 448,67''±6,591 489,28'± 11.187 Chilu cao thim sinh trirdng (cm) 52,80'±0,278 61,4l''±0,I33 70,98'=±0,202 Chik cao thim tii sinh (cm) 44,07'±0,190 51,33^±0,136 60.41°±0,084 Theo hdng ngang cdc so mang chir cdi khdc nhau ihi sy sai khdc giira chiing Id lit ro rit (P< 0.05) din rdi rdr4t (P<0,001)
Cudng dg tai sinh binh quan d cic cdng thdc A; B; C Ii 369,31; 448,67; 489,28 (kg/ha/ngiy). Ta cung thay cdng thuc C cd cudng dg cao nhat sau dd Ii cdng thuc B va thap nhat Ii cdng thuc A vdi sy sai khic thong ke Ii rat ro r$t (P<0,001).
Ket qua theo doi chieu cao va toe dg sinh trirdng, tai sinh ciia cay cd hoa trang qua cic khoang cich cSt khic nhau
, Bing 6: Chiiu cao cdy, tdc dg sinh Irudng vd tdi sinh cua cd hoa Irdng a cdc khodng cdch cdt khdc nhau Thdi dilm cSt
L6 TN 40 L6 TN 50 L6 TN 60
~1 Chi^u cao sinh trudng (cm) 57,91'±0,285 71,02''±0,513 82,60=±0,331 2 T6C dO sinh trudng (cm/ngiy) 1,19'±0,350 1,21 "±0,264 1,20''±0,340 3 Chieu cao tii sinh (cm) 58,05'±0,238 74,9l''±0,380 94,93'±0,361 4 T6C d$ tii sinh (cm/ngay) 1,27°±0,313 1,34°±0,307 1,34°±0,306 'leo hdng ngang cdc so mang chir cdi khdc nhau thi
•'r4t (P<0,001)
cac khoing cich cat khic nhau thi chieu 10, toe dd sinh trudng v i tii sinh la khac lau. Sy chdnh l?ch gida chidu cao tai sinh cd t chenh I6ch rit Idn giiJa cic thdi diem cit lac nhau. So sinh thdng ke cho thay sy sai tic niy Ii rit ro r?t vdi (P<0,01- 0,001). CJ loing each cit 40 ngay cd chidu cao trung nh dat 57,91cm tuong ung d khing each cit ); 60 ngay thi chidu cao sinh trudng 71,02 i 82,60cm. Th8 hign sy sai khac ro r?t qua lan tich phap th6ng ke (P<0,01- 0,001).
DC do tai sinh ciia cd d cic khoang cich eat lie nhau thi khdng cd sy sai khac (P>0,05).
khoang each cit la 40 ngay cay cd chidu LO sinh trudng 57,91cm va chidu cao tii sinh (,05cm la thap nhit. Tuong ung d khoing ich cit 50 ngay cay cd chieu cao sinh trudng ',02 cm vi chieu cao tai sinh 74,91cm, d ioang each cit 60 ngiy thi cay cd chieu cao 'o nhit chieu cao sinh tnrdng 82,60cm va
idu cao tii sinh 94,93 cm.
SM- sal khdc giiia chung la tic ro ret (P< 0,05) den rdt Ket qua sinh trirdng, tai sinh va nang suat chkt xanh d cac khoang each cit khdc nhau 0 cac khoing cich cat khac nhau thi chieu cao sinh trudng cung nhu tii sinh khic nhau theo xu hudng thdi gian ting Ien. Ta cd the nhan thay chieu cao tang dan tu Ida cat 1 den Ida 2 vi giam din d Ida cat 3 va 4. Nguyen nhan gay nen hien tugng niy chii yeu do dieu ki?n thdi tidt va dac diem sinh trudng ciia cay.
CJ khoing each cit 50 ngiy thi chidu cao tii sinh vi sinh trudng d cac Ida cung khic nhau tang dan tu Ida 1 ddn Ida 3. Tuong ty nhu vay d khoang cich cat 60 ngay thi ngiy thi chieu eao tai sinh v i sinh trudng d cic Ida 1 ddn Ida 2 tang tu 263,25 ddn 389,11 (cm). Dieu niy cflng dung nhu theo quy luat dg cao tham cao nhat d 60 ngiy thi nang suat khi thu cit d thdi dilm 60 ngay Ii cao nhit (chieu cao thim 54,76 - 63,60 cm thi nang suit tang 1,75 - 2,33 kg/m^).
35
NguySn Hmg Quang vii Dtg Tap chf KHOA HQC & C 6 N G N 0 H $
Bing 7; Chieu cao smh Irirdng. Idi sinh vd ndng suat chiit xanh a cdc khodng c Thi-i dicm c3t
(ngiy)
Ctiiciicao sinh tririVng
_ ( c m ] _
Chicucao tii sinh
(em)
Chi^u cao thim (cm) 40
50
258,13± 1,94 260,67±2,94
38,71 47,39
nhau lg sual it xanh .g/mVlua 1,03±0,00f l,45±0,0l;
2 3 4 Ketqi
60 40 50 60 40 50 60 40 50 60
263,25*1,54 342,50±2,47
-
347,33±2,I6 389,11±2,54 396,33±2,48 306,67±2,I6 267,50*1,77
54,76 38,70 49,94 63,60
lii ve thinh phan hda hpc ciia cd thi nghiem d cdc thi nghiem khac nhau Bing 8: Thdnh phdn hda hgc ciia co hoa trdng
^ ^ ^ Chititu Ten mau ^ ^ ^
VCK
(%)
Protein Ih6/VCK
(%)
Protein , . ..
,. , Lipid . . " ' % t6ngs6 tOngsS = (%) " " • '
Khoing tdng so
(%)
l,75±0,011 l,37±0,0IC l,74±0,0ll 2,33±0,015 1.59±0,010 1,5310,011 1.07±0,007
Xo l6ng
s6 DXKI
(%)
L6TNI Lo TN II Lo TN III L6TN A L6TNB LoTNC Lo TN 60 L6 TN SO Lo TN 40
15,68 15,71 15,76 15,67 15,72 15,83 15,73 15,51 15,34
15,56 15,73 16,15 15,61 15,82 16,31 15,41 15,84 16,35
13,12 13,26 13,60 13,16 13,33 13,73 12,99 13,38 13,84
0,71 0,78 0,85 0,73 0,82 0,89 0,84 0.88 1.03
3,54 3,65 3,78 3,71 3,62 3,54 3,89 3,66 3,23
5.96 5,02 4,32 5,67 4,93 4,21 5.42 5.26 4,11
9,38 9,41 9,65 9,56 9,59 9,63 9,48 9,64 9,97 Ket qua phan tich thanh phan hda hgc cua cd
hoa trang trong cac thi nghi?m cho thay: (!) mat dg 30 x 40 ham lirgng v^t chat khd cao hoTi cac m|t dg khic. 6 thi nghi?m cic thdi didm cit khic nhau thi thdi diem 60 ngiy cav hoa tring cd ham lugng v^t chat khd cao nhit 15,73%.
0 cic miic phan bdn khic nhau thi protein cung CO sy thay ddi. Him lugng protein d^t cao nhat d cic thi nghi?m vdi muc phan bdn va khoing each tuong ung la 30 x 40 va mite phin hdu co 30 tan. Khi protein ting thi ham lugng xa giam tuong ung. Ty I? xo cd xu hudng giam dan khi tang din lugng phan bdn.
So sinh thanh phan hda hgc ciia cd hoa tring ciia nghien cdu niy vdi kdt qua cua Ly Thi Luyen va cs (2010) [4] thi ket qua nay cao hon (VCK trung binh la 15,34 - 15,83% so vdi 15-16% va protein thd 15,41 -16,35)%).
KET LUAN
d cic m^t dg trdng khic nhau, cay cd tring vin sinh trudng \ i phit trien tot va nhat d khoang cich 30 x 40 cm. Vdi cic c phan bon khac nhau ciing anh hudng rat tdi ning sukt \k chat Iugng ciia cd hoa tri Muc phan bdn hiiu co tot nhat trong nghi?m I la 30 tan/ ha.
Chieu cao sinh trudng, til sinh ciia cd d' m^t dg, muc phan, khoing each cit khicri cd y nghia thdng ke. Chi u cao cay tang khi thdi gian tang len tu - it - 70 ngay.
6 eac mdc phan bdn kl ,hau thi chi6u sinh trudng va cudng d, ^ tnrdng va n suit khac nhau. Cay co ho. tring phat t t6t nhat d muc 30 tan/ha, gi^..^ ^.^ ^ ^r^
tan/ ha va 10 tan/ha.
36
Nguyen Hung Quang vd Dig Tap chi KHOA HQC & CONG N G H £ 92(04): 3 1 - 3 7
K-hoang each c i t k h i c nhau da cd i n h h u d n g Idn den k h a n i n g tai sinh cua cd. Chi^u c a o t h i m ciia cd c u n g t a n g d i n t h e o k h o i n g c i c h : i t t d 4 0 ddn 60 ngay.
Cd h o a trang cd ty Ie vat c h i t khd va protein thd k h i c a o . Vi viiy, cay cd hoa t r i n g cd tJEOI^T thdc an cho dai gia sue r i t tot.
T A I L I E U T H A M K H A O [1]. Doan An, V6 Van Tri (1976), Gdy irSng vd sir dung mgt sd giong cd ndng sudt cao, Nxb Ndng Nghiep, H i Ndi.
[2]. Til Quang Hiln, Nguyin Khinh Quic, Trin Trang Nhung (2002), Ddng cd vd cdy thuc dn, Nxb Nong Nghiep H i Ngi.
[3]. Di€n Yin Hung (1974), Cdy thuc dn gia sdc miin Bac Viet Nam, Nxb Ndng Thdn.
[4]. Ly Thi Luyen, Nguyin Ngoc Anh va Khuc r h i Hue (2010), Nghiin cuu su dung cdy hoa trdng ldm thuc dn bd sung cho de sua.
[5]. Hoing Toin Thing, Cao Y i n (2005), Gido trinh sinh ly hgc dgng vgt nuoi, Nxb Nong nghiep.
Ha Npi.
,6]. Nguyen Thien (2003), 7>-d«g cd nuoi bd siia, Nxb Ndng nhiep. Ha Npi.
7 ] Nguyen V i n Thi^n, Nguyin Khanh QuSc,
>]guyln Duy Hoan (2002), Phuang phdp nghiin 'UU trong chdn nuoi, Nxb Ndng nghiep, Ha Noi.
[8], Nguyin Dure Tran, Le Sinh Tin^, Nguyen Chfnh (1997), Phuangphdp du trit, che bien Ihiic dn gia sue, Nxb Nong nghiep. H i Ndi.
[9]. Vi^n Chin nudi qudc gia (2001), Thdnh phdn vd gid tr} dinh dudng ihtic dn gia stic. gia cdm, Nxb Ndng nghifp. H i Npi.
[10]. Trjnh Xuin Yu v i cs (1976), Gido trinh sinh ly thyc vgl, Nxb Ndng thdn.
[11], Hamphray L. R (1980), Hudng ddn thdm canh ddng co nhiil dai vd a nhiil ddi. Nxb Ndng nghiep. H i Ndi.
[12]. Nguyen Quoc Toan, Tran Quoc Tuan, Hoang Thi Lang and Dao Due Bien (2006), "Study on Spilanthes acmella Mur as feed for cow", Magazine of science and technologies of Nation institute of animal husbandry, Vietnam, June, 2007).
[13]. Bogdan A. (1977), Tropical pasture and fodder plants, Longman London and NewYork.
[14]. David W. Pratt, U. C. C. E. Farm Advior (1993), Principles of conUolled grazing, Liverstock & range report No. 932 Spring.
[15]. Hongthong Phimmasan and Inger Ledin (2005), Effect of supplementing a diet based on maize, ricebran and cassava chip wilh three different improved forages on feed intake, digestibility and growth in rabbits.
[16]. Cue Chan nuoi (2011), Tinh hinh san xuit thurc i n tho xanh.
Http://www.Cucchannuoi.gov vn
S U M M A R Y
S T U D Y O N T H E I N F L U E N C E O F S O M E F A C T O R S A F F E C T I N G T H E A B I L I T Y O F G R O W T H , P R O D U C T I V I T Y A N D Q U A L I T Y O F W H I T E F L O W E R G R A S S (SPILANTHES ACMELLA M U R R )
Nguyen Hung Quang', Nguyen Due Truong College of Apiculture and Forestry - TNU The study was conducted to determine the yield and quality of white flower grass under the influence of factors such as planting density, fertilizer and cutting periods. Three experiments were conducted by method of experimental in the field Experiment 1 studied the effect of three planting densities (20 x 30, 30 X 30 and 30 x 40 cm). Experiment 2 studied the effects of three levels of organic fertilizers (10, 20 and 30 tons/ha). Experiment 3 studied the effect of cutting period (40, 50 and 60 days).
Results indicate that at different planting densities, white flowers grass was growing and developing well. The highest yield was found at treatment with density of 30x40 cm. Experiment with different levels of fertilizer is also a strong influence to the yield and quality of grass. The best treatment in experiment 2 was 30 tons organic fertilizer/ha. Different cutting period has great influence on regeneration ofthe grass. The height ofthe grass mats also increases with cutting period from 40 to 60 days. Dry matter and crude protein of white flower grass are high.
1 Keywords: While flowers grass, planting density, culling period, productivity, regeneration capacity.
^dy nhdn. 7/11/2011, Ngdy phdn biin-15/12/2011, Ngdy duyel ddng: 14/5/2012
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