苹梢鹰夜蛾生物学特性及防治

Studies on the Biological Characteristics and Control Method of Hypocala subsatura Guenee

柿(Diospyros kaki L.f.)是我国重要的果树之一。近几年来国艺工作者从日本引进甜柿不同品种,已见成效,在我国南力栽培面积日益扩大。随着甜柿生产基地的相继建立,发现苹梢鹰夜蛾(Hypocala subsatura Guenee)的危害日趋严重。幼虫吐丝粘连苗木和幼树叶片成苞,取食苞中嫩芽和叶,致使枝秃梢枯,严重影响苗木和幼树的生长。

Hypocala subsatura Guenee is a major pest damaging young plant of non-astringent type of Persimmon. Studies on its biology and control were carried out in Fuyang County, Zhejiang Province in 1990~ 1992. The paper describes the life history, law of distribution of eggs and feeding habit of larvae. This insect has 2 to 3 generations a year, overwintering with pupa in soil. The relationship between seedlings of different combinations of stock and scion of non-astringent type of Persimmon has been studied. Experimental result showed that to kill the larvae, spray of 1:1500 Fenvalerate was effective.