摘要
采用浸叶法测定了丙溴磷与溴虫腈混配对稻纵卷叶螟的增效作用。结果表明,当m(丙溴磷)∶m(溴虫腈)为5∶1和7∶1时增效作用较强,此时的共毒系数分别为156.10、164.49。田间试验结果表明,按m(丙溴磷)∶m(溴虫腈)为7∶1进行混配并以600g/hm2喷雾使用后,在15d时对稻纵卷叶螟的防治效果达91.77%。
The synergism of binary combinations of profenofos and chlorfenapyr against Cnaphalocrocis medinalis （Gunenée） was determined using leaf-immersing method. The results showed that the mixture of profenofos and chlorfenapyr at the ratio of 5：1 and 7：1 had a significant synergistic action against the rice roller borer, and its cotoxicity coefficient （CTC） was 156.10 and 164.49 respectively. The efficacy of the 7：1 mixture against the rice roller borer reached 91.77%, 15 days after application at the rate of 600 g/hm2 in the field.
出处
《农药研究与应用》
2008年第6期28-30,共3页
Agrochemicals Research & Application
关键词
丙溴磷
溴虫腈
稻纵卷叶螟
毒力测定
防治效果
profenofos
chlorfenapyr
Cnaphalocrocis medinalis （Gunenée）
toxicity
efficacy
