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莱阳市近几年桃发展迅速,现栽植面积已达2000hm2。由于化学药剂的不合理使用,杀伤了大量的蚧类天敌,导致往年发生轻的蚧类的为害日趋严重。1998~2000年,笔者对本市桃园主要蚧类及其天敌进行了调查与观察,并对蚧类的防治做了初步探讨。1主要蚧类及其生物
Laiyang City, peach rapid development in recent years, the planting area has now reached 2000hm2. As a result of the irrational use of chemical agents, a large number of natural enemies of scale have been killed, leading to the increasingly serious damage of light scale species in previous years. From 1998 to 2000, the author investigated and observed the main scale species and their natural enemies in Taoyuan City, and made preliminary discussions on the prevention and treatment of scale species. 1 Main Kuwana class and its biological