sx thuoc tru sau beauveria bassiana
TRANSCRIPT
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KHA LUN TT NGHIP TI:HON THIN CNG NGH SN XUT
CH PHM NM BEAUVERIA BASSIANA NG DNGPHNG TR SU HI RAU V XUN- H 2009
Gio vin hng dn : PGS.TS PHM TH THY
Sinh vin thc hin : VN TUNLp : KSCNSH_0501
a im thc tp : Vin Bo v thc vt- T Lim- H Ni
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PHN I: M U
- Rau xanh c vai tr to ln i visc khe, i sng v nn kinh t.
- Vic thm canh cao ko theo spht sinh ca su hi rau.
- S dng thuc tr su ha hcgy nn nhng nh hng xucho mi trng v sc khe conngi.
- Thuc tr su vi nm khcphc c nhng nhc imca thuc ha hc
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PHN II: NI DUNG V PHNG PHP
* NI DUNG NGHIN CU
I. Chn chng ging nm Beauveria bassiana (Bb).
II. Hon thin mi trng sn xut ch phm nmBb.
III. Nghin cu mt s yu t nh hng ti nng sut v cht lng cach phm nmBb.
IV. nh gi hiu lc ca ch phm nm Bb i vi cc su chnh hi rau.
* PHNG PHP NGHIN CU
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PHN III: KT QU V THO LUN
I. CHN CHNG NM Bb.Chng nm Bb pht trin trn mi
trng SK sau 10 ngy nui cy.
Hnh 1:Ging nmBeauveria bassiana
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II. HON THIN MI TRNG SN XUT CH PHM NM Bb
Bng 1: nh hng ca t l (%) cm n s pht trinca nm Beauveria bassiana trong qu trnh sn xut
Cng thc th
nghim
T l (%)
cm
S lng bo t ( x109 bo t/g)
Ti Kh
I 70 5,52 8,40
II 60 6,65 10,90
III 50 5,79 8,55
IV 40 5,05 7,81
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Hnh 2: NmBeauveria bassianapht trin trn cc mi trngc t l cm khc nhau
70% 60% 50% 40%
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Bng 2: nh hng ca t l (%) ng n s pht trin
ca nm Beauveria bassiana trong qu trnh sn xut
Cng thc thnghim
T l (%) ng S lng bo t ( x109 bo t/g)
Ti Kh
I 10 5,35 7,50
II 20 6,95 10,05
III 30( 60% cm, 30% ng,
10% tru)
7,95 11,90
IV 40 6,50 8,45
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Hnh 3:Nm Beauveria bassiana pht trin trn cc mi trngc t l ng khc nhau
10% 20% 30% 40%
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Bng 3: nh hng ca t l (%) tru n s hnh thnhbo t ca nm Beauveria bassiana trong qu trnh sn xut
Cng thc thnghim
T l (%) tru S lng bo t ( x109 bo t/g)
Ti Kh
I 0 5,08 8,40
II 5 6,32 8,75
III 10 6,85 10,65IV 15 5,65 9,25
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Hnh 4:Nm Beauveria bassiana pht trin trn cc mi trngc t l tru khc nhau
0% 5% 10% 15%
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Bng 4: nh hng ca t l (%) u tng n s pht trinca nm Beauveria bassiana trong qu trnh sn xut
Cng thc thnghim
T l (%) utng
S lng bo t ( x109 bo t/g)
Ti Kh
I 0 5,95 8,85
II 10 6,10 9,25
III 20 7,90 10,15
IV 30 6,50 9,50
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Hnh 5:Nm Beauveria bassiana pht trin trn cc mi trngc t l u tng khc nhau
0% 10% 20% 30%
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III. NGHIN CU MT S YU T NH HNG N NNGSUT V CHT LNG CH PHM NM Bb.
Bng 5: nh hng ca t l nc trong mi trngsn xut n s pht trin ca nm Beauveria bassiana.
Cng thcth nghim T l nc/ mi trng(ml/g)S lng bo t ( x10
9
bo t/g)Ti Kh
I 25/ 100 (1/ 4) 5,25 8,65
II 35/ 100 (1/3) 7,82 10,70
III 50/ 100 (1/ 2) 6,94 10,15
IV 75/ 100 (2/ 3) 5,45 8,26
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Hnh 6:Nm Beauveria bassiana pht trin trn cc mi trngc t l nc khc nhau
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Bng 6: nh hng ca thi gian sy ti cht lng ca chphm nm Beauveria bassiana.
Cng thc th nghim Thi gian sy(gi)
S lng bo t sau sy(x1010 bo t/g)
I 4 0,74
II 5 0,88
III 6 1,05
IV 7 1,12
V 8 1,06
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Mt trc Mt sau
Hnh 7: Ch phm nm Beauveria bassiana.
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III. HON THIN QUY TRNH CNG NGH SN XUT NM Bb
Chng ging Bb phn lptrn su rm thng
Nhn ging cp 1 trn mi trng SK
Hon thin mi trng sn xut(60% cm, 30% ng, 10% tru)
Ri ra khay hnh thnh bo t
Sy 450C c thng gi trong 7 gi
Nghin bi
4- 5 ngy (25o
C, 80%)
2- 3 ngy
ng gi, bo qun Th hiu lc sinh hc
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IV. HIU LC CA CH PHM NM Bb I VI 3 LOI SUCHNH HI RAU
t th nghim Nng phun(x108 bt/ml)
T l (%) su cht sau th nghim Ttb(oC)
Htb(%)
3 5 7 10 12 ngy
I9/3- 21/3/09 2 10,0 10,0 15,7 26,3 26,3 22,0 82,94 5,0 10,0 26,3 31,6 51,6
6 15,0 15,0 47,4 52,6 67,9
II24/3- 5/4/09
4 10,0 16,7 33,3 36,7 40,022,9 83,0
6 13,3 23,3 56,7 63,3 63,38 13,3 30,0 50,0 66,7 76,0
III31/3- 12/4
4 3,3 15,7 21,4 35,7 45,724,2 83,96 6,7 13,8 50,0 37,1 66,7
8 6,7 24,1 67,9 75,0 82,6
Bng 7: Hiu lc ca ch phm nm Beauveria bassianai vi su t (Plutella xylostella) hi bp ci, su ho.
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Hnh 8: Su t cht do nhim nm Beauveria bassiana.
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Bng 8: Hiu lc ca ch phm nm Beauveria bassianai vi su xanh bm trng (Pieris rapae) hi rau ci.
t th nghim Nng phun(x108 bt/ml)
T l (%) su cht sau th nghim Ttb(oC)
Htb(%)
3 5 7 9 12 15ngy
I11/2- 26/2/09 2 10,3 17,2 27,6 31,0 31,0 35,0 22,1 81,04 13,7 17,2 17,2 24,1 41,4 49,5
6 34,4 41,3 44,8 61,3 61,3 62,0
II25/2- 12/3/09
3 13,3 23,3 26,7 33,3 36,7 36,722,3 81,66 20,0 36,7 43,3 43,3 46,7 56,7
9 26,7 36,7 50,0 66,7 66,7 73,3
III10/4- 25/4/09
3 7,5 13,2 21,1 31,6 36,7 40,025,6 83,76 15,0 21,1 36,8 50,0 55,3 67,5
9 12,5 26,3 44,7 57,9 78,9 80,2
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Hnh 9: Su xanh bm trng cht do nhim nmBeauveria bassiana.
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Bng 8: Hiu lc ca ch phm nm Beauveria bassianai vi su khoang (Spodoptera litura) hi bp ci, su ho, sp l.
t th nghim Nng phun(x108 bt/ml)
T l (%) su cht sau th nghim Ttb(oC)
Htb(%)3 5 7 9 12 15
ngy
I13/4- 28/4/09
3 10,5 10,5 15,8 36,8 47,4 47,424,5 83,76 21,0 36,8 47,3 47,4 57,9 57,9
9 21,0 42,1 57,9 68,4 73,7 78,9
II27/4- 12/5/09
3 6,7 17,2 18,5 29,6 48,1 58,127,1 84,26 6,7 24,1 25,9 44,4 51,8 65,6
9 10,0 37,9 51,8 59,2 77,8 81,6
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Hnh 10: Su khoang cht do nhim nm Beauveria bassiana
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PHN IV: KT LUN V NGH
I. KT LUN
1. Hon thin mi trng sn xut ch phm nm Bb: T l cm trong mi trng sn xut thch hp nht l 60%, s bo t
t 1,09x1010 bo t/g. Mi trng c t l ng l 30% l thch hp, s lng bo t nm t
1,19x1010 bo t/g.
T l tru ph hp nht l 10%, s lng bo t hnh thnh 1,065x1010 bo t/g. T l u tng trong mi trng l 20% l thch hp, s lng bo t
t 1,05 x1010 bo t/g.2. Mt s yu t nh hng ti nng sut v cht lng ch phm
nm Bb T l nc/ mi trng l 1/ 3 cho s lng bo t nm 1,07 x1010
bo t/g. Thi gian sy thch hp nht l 7 gi 450C, s lng bo t t
1,12x1010 bo t/g.
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2. Hiu lc ca ch phm nm Bb i vi 3 loi su chnh hi rau: Ch phm nm Bb phun nng 8x 108 bo t/ml c hiu lc
dit su t (Plutella xylostella) t 82,6% sau 12 ngy th nghim. Vi su xanh bm trng (Pieris rapae), nng 9 x108 bo
t/ml hiu lc ca ch phm nm Bb t 80,2% sau 15 ngy thnghim.
Vi su khoang (Spodoptera litura), ch phm Bb khi phun nng
9 x108 bo t/ml, hiu lc sau 15 ngy t 81,6% .
II. D NGH Cn tip tc hon thin cng ngh sn xut ch phm nm
Beauveria bassiana trn quy m cng nghip v ng dng rng ri
trong sn xut rau an ton nc ta.
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