韩城市苹果树主要病虫害变化动态分析

The Main Diseases and Pests of Apple Trees Changing and Dynamic Analysis in the City of Hancheng

根据韩城市果业发展三个阶段的病虫害发生危害情况得出韩城市苹果主要病虫害的动态变化:主要病害由苹果腐烂病(Valsa mali Miyabeet Yamada)为主逐步演变为以苹果黑红点病[Mycosphae-rella pomi(Pass.)Waltonet Orton]和早期落叶病[Marssonina mali(P. Henn)Ito]为主;主要虫害由桃小食心虫(Carposina niponensis Walsingham)为主逐步演变为以叶螨(Tetranychus viennensis Zacher)和球坚蚧(Didesmococcus koreanus Borchs)为主。

Based on the analysis of the three stages of fruit industry and the occurrence of the diseases and pests of fruit trees in Hangcheng, the trend for apple tree disease is predicted to change from the apple rotten sickness into black and red spot disease and early defoliation, and for apple tree pests from Carposina niponensis Walsingham into Tetranychus viennensis Zacher, Tetranychus urticae Koch and Didesmococcus koreanus Borchs.