论文部分内容阅读
苹果爪绵蚜 (ＡｐｈｉｄｏｕｎｇｕｉｓｐｏｍｉｒａｄｉｃｉｃｏｌａＺｈａｎｇｅｔＨｕ ,1 999)是鱼台县苹果园新发生的一种检疫性害虫 ,吸食苹果树汁液 ,如不及时防治 ,3～ 5ａ全株枯死。笔者对其为害症状、形态特征、发生规律进行了观察和研究。1 分布及为害苹果根爪绵蚜
AphidounguispomiradicicolaZhangetHu, 1 999 is a newly emerged quarantine pest in apple orchard in Yutai County. It takes apple juice and takes 3 to 5 years to die if it is not controlled in time. The author of its harmful symptoms, morphological characteristics, the occurrence of the law were observed and studied. 1 distribution and damage apple root claw cotton aphids