梨园茶翅蝽防治适期的研究周志芳，褚凤杰（河北省农林科学院石家在果树研究所０５００６１）八十年代以来，由于耕作条件的变化和广谱性农药的大量使用，导致了茶翅蝽的严重发生和为害。据调查，一般防治园害果率达１８．２３－３８．９％，严重的高达９９．３６％，给生... Pear Orchard tea leaf bugs prevention and control of the appropriate period Zhou Zhifang, Chu Fengjie (Hebei Academy of Agriculture and Forestry Shijia Institute of Fruit 050061) since the eighties, due to changes in farming conditions and extensive use of broad-spectrum pesticides, The serious occurrence and damage. According to the survey, the general prevention and cure fruit rate reached 18.23-38.9%, as high as 99.36%, to give birth to ...