摘要
研究了棉铃虫卵在棉株的垂直方向上及在不同器官上的分布规律，结果表明：（１）各代分布以上部４～６ 层果枝为主，而且在空间格局上都是聚集的；（２）２ 代时以嫩叶、顶心及边心为主，淮北３、４ 代，沿江３、４、５ 代顶心及边心、嫩叶、老叶处卵量分布比例减小而繁殖器官上比率明显增大；（３）适时摘除顶心、边心及无效花蕾是减轻棉铃虫为害的有效手段。
The distribution regulations of the cotton bollworm's eggs in cotton field were studied.The results showed that:(1)Most of the eggs were mainly on the upper 4～6 layers of cotton plant branch. The vertical pattern was aggregative;(2)The tender,top and side leaves were the main parts of the oviposition of the second generation.The distribution of eggs on nutritious organs decreased while those on reproductive organs increased as the generations went on ;(3)Cutting off the top and side leaves,useless flowers at the right time were an effective method of controlling the cotton bollworm.
出处
《安徽农业科学》
CAS
1999年第4期380-382,385,共4页
Journal of Anhui Agricultural Sciences
关键词
棉铃虫
垂直分布
棉田
Cotton Bollworm,Distribution Pattern
