【摘要】 本文对斜纹夜蛾的种群消长、性比、发育历期、发育起点温度与有效积温以及毒力测定进行了研究。结果表明：斜纹夜蛾幼虫的种群消长有两个高峰期；室内测得斜纹夜蛾的发育起点温度为１３．２６℃，全世代有效积温为４８５．５４ 日度。５ 种药剂对斜纹夜蛾四龄幼虫的毒力从大到小顺序为：敌杀死、万灵、功夫、敌敌畏和氧化乐果。更多还原

【Abstract】 Population dynamics、sex ratio、developmental duration、developmental zero、effective accumulative temperature and toxicity determination of Prodenia litura were studied in this paper. The results indicated that the population dynamics of larvae had two peaks. Its developmental zero was 13.26℃. The effictive accumulative temperature in one life cycle was 485.54DD. Toxicity of the five insecticides to the 4th instar larva of Prodenia litura from high to low was deltamethrin、lannate、cyhalothrin、dicheorvos and omethoate, respectively.更多还原