摘要
管氏肿腿蜂 Scleroderma guani Xiao et Wu防治双条杉天牛在北京地区最适放蜂时间为 5月下旬至 6月上旬 ,虫蜂数量比为 1∶ 3～ 1∶ 6。
The optimum time for releasing Scleroderma guani against Semanotus bifasciatus is from the last ten days of May to the first ten days of June.The ratio of the longicorn to wasp is 1∶3～1∶6 .Chemical pesticides are more toxic to wasps than botanical ones.
出处
《中国森林病虫》
北大核心
2001年第S1期44-,共1页
Forest Pest and Disease
关键词
管氏肿腿蜂
双条杉天牛
园林
Scleroderma guani
Semanotus bifasciatus
garden
