褛裳夜蛾生物学特性与防治研究

褛裳夜蛾是危害胡杨的一种食叶害虫,以幼虫取食嫩芽、嫩叶为害。该虫在额济纳旗天然胡杨林区一年发生一代,幼虫越冬,翌年4月中旬开始孵化,孵化不整齐,幼虫3龄,危害期45 d左右,成虫趋光性强、飞翔能力强、寿命长,虫态重叠明显。该虫发生受温度、林相、立地条件等环境影响。防治试验表明：在幼虫期机动喷雾进行无公害防治,效果较好;频振式杀虫灯诱杀成虫,捕虫量可观。

Biological Characteristics and Control of Catocala remissa Staudinge

As a defoliator harming Populus diversifolia Schrenk,Catocala remissa Staudinger has one generation a year in natural forest of Populus diversifolia Schrenk in Ejina,overwinters as larvae,begins to hatch in next mid-April with irregular hatching.The larvae has 3 instars with 45 days of harm stage.The adult has strong phototaxis,good flying ability,long life and obvious overlapping of insect state.Occurrance of Catocala remissa Staudinger can be affected by temperature,phase,site conditions,and so on.The controlling test shows that in larvae stage,it has good effect of harmless control with machine spraying.The frenquency trembler grid lamp can lure and kill the adult insects in considerable quantity.