论文部分内容阅读
日本方头甲广泛分布于我国各柑桔产区,是盾蚧科害虫的重要天敌。本文报道1978～1980年的调查研究结果。在重庆年发生3～5代,世代重叠。田间观察表明,一年中幼虫出现达7个月左右;成虫周年可见。捕食盾蚧科害虫9种,粉蚧科害虫1种,叶螨科害虫1种,并具有嗜食矢尖蚧雄虫的习性。成虫日取食矢尖蚧一龄末期雄虫70.3头。三氯杀螨醇、石硫合剂、溴氰菊酯和机油乳剂对本种天敌的成虫和幼虫都较安全。
Japan square head armor widely distributed in various citrus producing areas in China, is an important natural enemies of pest insects. This article reports the results of the survey from 1978 to 1980. Occurred in Chongqing 3 to 5 generations, generations overlap. Field observations show that larvae occur for up to seven months in a year; adults can be seen annually. 9 species prey on insects of Sarcophyta, 1 species of Melastomataceae, 1 species of Spider mites, and habit of male Agrimony. Adult feeding on Agkistrodon elegans at the end of the first 70.3 male. Dicofol, lime sulfur, deltamethrin and oil emulsions are safer for adults and larvae of this natural enemy.