摘要
Different temperatures affect the effect of controlling pine caterpillars, Dendrolimus punctatus, by B.t pesticide apparently.While using B.t pesticide,the mortality of D.punctatus decreased as the temperature dropped.From the result of 4 temperature gradient tests,it was showed that 20 ℃ is the threshold that determine the effect of controlling D.punctatus by B.t. The results shows that different temperatures affect the feeding deterrence of the B.t to the D.punctatus larvae also,but in the all temperature treatments,the feeding deterrences are apparent consistently.
Different temperatures affect the effect of controlling pine caterpillars, Dendrolimus punctatus, by B.t pesticide apparently.While using B.t pesticide,the mortality of D.punctatus decreased as the temperature dropped.From the result of 4 temperature gradient tests,it was showed that 20 ℃ is the threshold that determine the effect of controlling D.punctatus by B.t. The results shows that different temperatures affect the feeding deterrence of the B.t to the D.punctatus larvae also,but in the all temperature treatments,the feeding deterrences are apparent consistently.
出处
《林业科学研究》
CSCD
北大核心
2000年第2期213-216,共4页
Forest Research
基金
国家"九五"攻关项目!"松毛虫灾害持续控制技术研究"部分内容
