摘要
以小菜蛾、棉铃虫为生物测定昆虫 ,通过测定 5种无机盐 (Na2 CO3,K2 CO3,CaCl2 ,MgSO4 ,和MgCl2 )对苏云金芽胞杆菌油剂的增效作用进行增效因子的筛选。结果表明 ,以小菜蛾为供试昆虫 ,除CaCl2 外 ,其余 4种无机盐对苏云金芽胞杆菌油剂均表现增效作用 ,0 .0 10 %MgCl2 效果最好 ,增效比为 1.5 6。以棉铃虫为供试昆虫 ,5种无机盐对苏云金芽胞杆菌油剂均表现增效作用 ,0 .0 12 5 %MgSO4 效果最好 ,增效比为 1.6 9,0 .0 2 5 %的Na2 CO3 次之 ,增效比为 1.5
Effects of five chemical synergistic factors (inorganic salts) on the toxicity of Bt oil formulation to Plutella xylostella and Heliothis armigera were tested. The results showed that four inorganic salts (CaCl 2 excluded) had synergistic effect on Bt oil for mation agaist P. xylostella and a marked increase in the potency of Bt oil formulation against Plutella xylostella was obtained in the presence of 0.01% MgCl 2 with 1.56 synergistic ratio. All five inorganic salts had synergistic effect on Bt oil formation against Heliothis armigera and 0.0125% MgSO 4 and 0.025% Na 2CO 3 had obvious synergism to Bt oil formulation against H. armigera with 1.69 and 1.59 synergistic ratio,respectively.
出处
《华中农业大学学报》
CAS
CSCD
北大核心
2000年第2期134-137,共4页
Journal of Huazhong Agricultural University
基金
国家"九五"攻关项目
关键词
苏云金芽胞杆菌
油剂
增效作用
增效因子
Bacillus thuringiensis , oil formulation, Plutella xylostella, Heliothis armigera , synergism
