摘要
毒力测定结果表明 ,与 1994年相比 ,1998年棉红铃虫对溴氰菊酯、氰戊菊酯的抗性分别上升 72 .6倍和6 8.4倍 ,而对甲基对硫磷的敏感性则增加了近 10 0倍。由于防治棉铃虫、棉红铃虫过量使用菊酯类农药 ,溴氰菊酯等菊酯类杀虫剂防治红铃虫的田间效果近年呈迅速下降的趋势 ,而甲基对硫磷对红铃虫仍然有效。适当使用甲基对硫磷或开发其它杀虫剂替代菊酯类农药应作为防治红铃虫的主要对策。
Control effect of pyrethrins insecticides and methylparathion on pink bollworm (Platyedra gosspiella Saunders)were evaluated in this experiment.The results of the toxicity tests in 1998 showed that the resistance of pink bollworm to pyrethrins insecticides had exceeded 72.6- and 68.4-fold respectively,while its susceptibility to methylparathion had gone up nearly to 100-fold,compared with those in 1994.As pyrethrins insecticides were overused to control the insects in the cotton fields,effects on pink bollworm decreased rapidly.However,methylparathion was still effective.So applying methylparathion properly and developing other insecticides instead of pyrethrins insecticides should be served as the main management methods in chemical control.
出处
《江苏农业学报》
CSCD
北大核心
2000年第2期92-96,共5页
Jiangsu Journal of Agricultural Sciences
基金
江苏省重点攻关项目! (BE96 370 )
关键词
棉红铃虫
菊酯类杀虫剂
防治效果
年度变化
Platyedra gosspiella Saunders
pyrethrins insecticide
control effect
