防治果树介壳虫的好方法——枝干涂环甘肃省庆阳林校（西峰７４５０００）唐治锋中图资料分类号Ｓ４８在果树生产中因用药不当，大量杀伤天敌，常诱发介壳虫严重发生，影响果树的正常生长和果品产量、质量的提高。笔者在坚持农业措施和生物措施防治果树介壳虫的实践中，利... Prevention and control of fruit tree scale insects good method - Branch stem ring Gansu Province Qingyang Lin School (Xifeng 745000) Tang Zhi-feng Chinese Library Catalog S48 In the production of fruit trees due to improper use of drugs, killing a large number of natural enemies, often induced scale insects often occur, the impact The normal growth of fruit trees and fruit yield, quality improvement. I adhere to the agricultural measures and biological measures to prevent and control fruit tree scale insects in practice, Lee ...