危害沙棘的围连环夜蛾生物学特性及防治

A Study on Biological Characteristics of Perigrapha Circumducta Moth Damaged Seabuckthorn Trees

围连环夜蛾在我国多有分布,但看见其幼虫的还是很少,因资料中寄主不祥,笔者经室内外观察。发现其危害多种植物的叶片,更喜欢危害沙棘树的叶片,笔者经2a的室内外观察得知。其生物学特性在辽宁西部每年1代,以蛹越夏及冬。对沙棘树危害较重,对栽植的大果沙棘危害尤为严重,在5a生的沙棘树上有100多头幼虫危害,成虫善飞翔。

Perigrapha circumdueta moth distribute the most part of China, but its larvae is rarely found, due to the authoritative data its host hash＇ t detailed recordation. Through two years for indoor and outdoor was observed by the author found that harmed many of plants leaves, preferring harm seabuckthorn leaves. The biological characteristics are one generation annually in the western Liaoning, summer and winter in form of the pupa. Heavy damage for seabuckthorn trees, damage the seahuckthorn tree of the Big-fruit is particularly serious, there are more than 100 larvae for 5 years of seabuckthorn trees. The imago is good at fly on wing.