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苹小卷叶蛾(Adoxophyes congruana Walker)是为害苹果、梨、杏、桃等的主要卷叶虫害,近年来在吉县山楂产区普遍发生,为害嫩叶、嫩梢、花蕾及幼果,直接影响山楂的产量与质量。一、生活规律苹小卷叶蛾在吉县山楂产区每年发生三代,一般以2龄幼虫于山楂老翘皮、伤口、绳草等缝隙内结白色薄丝茧越冬。在山楂嫩芽开绽时(一般在4月下旬至5月上旬),越冬幼虫开始陆续出蛰活动,顺枝爬行,钻进幼芽内吐丝缠缀为害,特别在山楂花芽分离时为害最盛,幼虫转入花丛中,逐个为害花蕾,使花蕾呈大小不同的残孔,所害花
Adipophyes congruana Walker is a major leaf-roll insect that damages apple, pear, apricot, peach and so on. In recent years, it has occurred in hawthorn producing area of Ji County, affecting young leaves, tender shoots, buds and young fruits directly, Yield and quality. First, the law of life Apple leaf roller moths Hawthorn area in Ji County occur three generations each year, generally 2 instar larvae in the Hawthorn old Alice skin, wounds, rope and other cracks in the gap knot white cocoon wintering. In the hawthorn bud bloom (usually in late April to early May), overwintering larvae began to sting activities, shuibian crawling, drilling into the sprouting of silkworm sting poisoning, especially when the Hawthorn flower damage most Sheng , Larvae into the flowers, one by one harm buds, so that buds were different sizes of residual holes, the flowers