| 苏云金芽孢杆菌液剂与杀虫双混用对稻纵卷叶螟的增效作用 |
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| 引用本文： | 顾真荣,马承铸,周爱农,王冬生,钱振官,戚大国.苏云金芽孢杆菌液剂与杀虫双混用对稻纵卷叶螟的增效作用[J].中国生物防治,1993(4). |
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| 作者姓名： | 顾真荣 马承铸 周爱农 王冬生 钱振官 戚大国 |
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| 作者单位： | 上海市农业科学院植保所，上海市农业科学院植保所，上海市农业科学院植保所，上海市农业科学院植保所，上海市农业科学院植保所，上海市松江县植保站 上海 201106，上海 201106，上海 201106，上海 201106，上海 201106，上海 20160 |
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| 摘 要： | 室内生物测定表明,Bt液剂和不同比例的25％杀虫双混用对稻纵卷叶螟都有不同程度的增效作用,其中3:1和1:1(Bt:杀虫双)混用增效作用最为明显,共毒系数分别为265和298。1:1混用的毒效为杀虫双单用的1.71倍。田间小区试验表明,1:1混用的防治效果接近于同剂量的杀虫双。
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| 关 键 词： | 稻纵卷叶螟 苏云金芽孢杆菌 杀虫双 增效作用 |
SYNERGIC EFFECT OF BACILLUS THURINGIENSIS PREPARATION AND DIMETHYPO IN CONTROLLING CNAPHALOCROCIS MEDINALIS[LEP.: PYRALIDAE] |
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| GU Zhen-rong MA Cheng-zhu ZHOU Ai-nongWANG Dpng-sheng QIAN Zhen-guan.SYNERGIC EFFECT OF BACILLUS THURINGIENSIS PREPARATION AND DIMETHYPO IN CONTROLLING CNAPHALOCROCIS MEDINALIS[LEP.: PYRALIDAE][J].Chinese Journal of Biological Control,1993(4). |
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| Authors: | GU Zhen-rong MA Cheng-zhu ZHOU Ai-nongWANG Dpng-sheng QIAN Zhen-guan |
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| Abstract: | Various degrees of synergic effects of Bacillus thuringiensis aqueous concentrate and 25% dimethypo against Cnaphalocrocis medinalis were obtained in a laboratory bioassay when the bio-pesticide was used in mixture with dimethypo at different ratios. Optimal synergistic activity occurred at 3:1 and 1:1 mixture ratios with the toxicity coefficients of 265 and 298, respectively. The toxicity of the mixture at 1:1 ratio was 1.71 times higher than that of dimethypo alone. Applying the mixture at 1:1 ratio in the field plot test gave approximately the same control effect as using dimethypo alone at the same treatment dose. |
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| Keywords: | Bacillus thuringlensis Cnaphalocrocis medinalis synergism dimetbypo |
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