球坚蚧,俗称“杏虱子”,在我县杏树上发生面广,危害严重,造成树势衰弱,枝枯叶萎,产量明显下降。为防治球坚蚧对杏树危害,我们经过反复调查,利用黑缘红瓢虫防治球坚蚧效果好,灭虫率高,树势恢复快,经济效益显著。其效果调查如下: 一、球坚蚧对杏树的危害:1985年7月我们在法库县丁家房乡余家卜村对154株成令杏树的调 Ball Chickweed, commonly known as “apricot louse,” occurred in my county a wide range of almond trees, causing serious damage, resulting in weak bark, withered branches withered, the output decreased significantly. In order to prevent Goldeneye against the apricot tree, we conducted repeated investigations and made good use of the black ladybug to prevent and control the ball columbarium. The pest-killing rate was high, the tree vigor recovered quickly, and the economic benefits were remarkable. The effect of the survey are as follows: First, the ball of cadmium on the apricot tree hazards: In July 1985 we were in Dachang County, Faku County, Yu Jia Bu Village 154 into the apricot tree into the tune