伊犁河谷苹果绵蚜生物学特性及防治

2004年苹果绵蚜Eriosoma lanigerum Hausm入侵新疆,主要分布于伊犁地区的新源、霍城、巩留、伊宁等四个县和兵团的61和62团.初步摸清了生物学.苹果绵蚜在新疆伊犁河谷1年发生12～15代,自然条件下能安全越冬.以若虫在树干、主枝、侧枝的剪锯口、节疤、老树皮下、树缝、新梢的叶腋、短果枝的端部和树基的萌蘖枝处、枯枝落叶下,根茎外围0～7 cm土层中均能越冬.树下和树皮裂缝越冬存活率较树上为高.不同苹果品种被害率不同,秦冠被害轻.提出了以严格加强检疫,采用园内园外、树上树下、农业防治和化学防治相结合的综合防治措施.

Bionomics and Control of Woolly Apple Aphid (Eriosoma lanigerum) in Ili River Valley

In this article,distribution,damage and techniques for controlling of the woolly apple aphid Eriosoma lanigerum in Xinjiang,especially in Ili are studied.To this day harm of Eriosoma lanigerum happens in Ining,Xinyuan,Gongliu,four counties in Xinjiang and Regimental Farms 61,62 of Xinjiang Production and Construction Corps.Woolly apple aphid has 12 or 15 generations in a year,with generation overlapping.It is able to overwinter as nymphs in natural condition.The nymphs of wooly apple aphid are able to overwinter in different places such as in tree trunk,in main branches,in side shoots,node,old bark,under dead twigs and withered leaves,under soil layer of 0-7 cm etc.The survival rate of nymphs living in crack of tree bark and under the tree was higher than that on the tree.