摘要
苏云金杆菌H3 111菌株摇瓶培养液 ,室内测定 4 8h对黄刺蛾幼虫的毒力回归方程为Y =4 2 90 0 +1 9898X ,r=0 95 4 2 ,与标准品比较其生物效价为 330 0 6 2IU/mg ;大田测试结果表明BtH3 111菌株防治黄刺蛾高峰期在药后 72～ 96h ,稀释 5 0 0～ 10 0 0倍的防治效果达 85 71%～ 89 10 % ,略高于DDVP。
A new Bacillus thuringiensis Mutant strain H3 111 is touched upon in the paper.Toxic regression equation for BtH3 111 on Cnidocampa flavescens (Walker)in laboratory test as follows:Y=4 290 0+1 989 8 X,r=0 954 2,and compared with standard sample(HD 1 S 1982),potency is 3 300 62 IU/mg;It is shown in field test that control peak of BtH3 111 on Cnidocampa flavescens is within 72～96 h of post spraying with 85 71%～89 10% of mortality in dilution of 500～1 000 fold aqueous,slightly higher that of DDVP.
出处
《江苏林业科技》
2002年第3期19-20,共2页
Journal of Jiangsu Forestry Science & Technology
