温度对B.t杀虫剂防治马尾松毛虫效果的影响

• 作 者: 赵同海 张永安 王玉珠 严东辉 陈昌洁 王贵成
• 机 构: 中国林业科学研究院森林生态环境与保护研究所!北京100091,中国林业科学研究院森林生态环境与保护研究所!北京100091,中国林业科学研究院森林生态环境与保护研究所!北京100091,中国林业科学研
• 出 处: 林业科学研究
• 发表日期: 2000年02期
• 关键词: B.t杀虫剂 温度 马尾松毛虫 防治

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 Bt pesticide apparently. Use of Bt pesticide, the mortality of D. tuberculosis as as temperature dropped. Flash the result of 4 temperature gradient tests, it was showed that 20 ° C is the threshold that determines the effect of controlling D. unpunctat by Bt The results shows that different temperatures affect the feeding deterrence of the Bt to the D. unpunctatus larvae also, but in the all temperature treatments, the feeding deterrences are apparent consistently.