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杏球坚蚧又名杏虱子 ,是杏树上普遍发生的 1种害虫。近几年来 ,成为宣化县杏生产的严重障碍因素。1 999年调查 ,深井镇杏受害株率 1 0 0 %,减产减收 3 0 %以上。造成杏树叶片大量脱落 ,杏芽不发、枝干枯死。严重者整株杏树枯死。1 发生规律经调查明确 ,杏球坚蚧在宣化县 1ａ发
Apricot ball pike, also known as apricot lice, is a common occurrence of apricot trees pests. In recent years, Xuanhua County has become a serious obstacle to the production of apricot. In the survey of 1999, the rate of apricot-affected plants in Shajing Town was 100% and the yield was reduced by 30% or more. Caused a large number of apricot leaves off, apricot buds do not send, dead branches. Serious apricot trees dead. An occurrence of the law identified by the investigation, apricot ball Kenyan in Xuanhua County made 1a