摘要： 1991～1994年，在冀市粮棉混作区，采用田间调查的方法，研究棉铃虫在不同作物上的种群分布。结果表明:一代卵麦田占99.6%，二代卵棉田占84.9%；三代卵棉田占47.6%，玉米田占44.9%，大豆、花生、谷、甘薯田等占7.5%；四代卵棉田占53.6%，玉米田占34.6%，大豆、花生、谷、甘薯田等占11.8%。棉铃虫幼虫在不同作物上分布与卵分布比率有所不同，玉米田幼虫分布比率明显减少。人为防治影响幼虫分布，防治后棉田分布比率下降。

关键词: 棉铃虫, 寄主作物, 种群分布

Abstract: The population distribution of cotton bollworm (Helio this armigera) in south area of Hebei province was observated from 1991 to 1994.The results showed that 99.6% of amount of egg of the first generation was distributed in wheat field, 84.9% of that of the second generation, in cotton field.The distribution of egg of the third generation was that,47.6%,in cotton field,44.9%, in corn field, and 7.5%, in bean, peanut and sweet potato fields.The distribution of egg of the fourth generation was that, 3.6%, in cotton field, 34.6%, in corn field, and 11.8%, in bean, peanut and sweet potato fields.The distribution percentage of larvae in these crops was different from that of egg.In the corn field the distribution of larvae population was obviously less than distribution of egg.The distribution ratio of larvae population has reduced in the cotrolled cotton field.

Key words: Heliothis armigera, Host crops, Population distribution

中图分类号: 

• S435.622