棉田玉米螟虫量分布与取食为害关系的研究  

STUDY OF THE RELATIONSHIPS BETWEEN THE DISTRIBUTION OF LARVAE AND INJURY ON ASIAN CORN BORER IN COTTON FIELD

作　　者：杨益众[1,2] 戴志一[1,2] 黄东林[1,2] 王春安[1,2] 王庆林[1,2] 高泰东[1,2] 王生元[1,2] 张银贵[1,2] 高联义[1,2] 

机构地区：[1]江苏农学院植保系 [2]江苏省姜堰市植保站

出　　处：《江苏农学院学报》1996年第3期75-78,共4页Jiangsu Agricultural Research

摘　　要：亚洲玉米螟已成为棉花上一种重要的钻蛀性害虫。该虫在棉田落卵量大，幼虫孵化率高，幼虫可为害棉花嫩头、叶柄、蕾、铃、茎杆等多种器官。根据同龄幼虫在棉花不同器官之间的分布，计算出１头幼虫一生破坏棉花器官二代为３．３７３个，三代为２．２０２个。通过各龄幼虫存活情况，估算出１块卵孵出的幼虫二代可为害棉花蕾７．４６个、嫩头７．１２个、棉桃３．３２个、钻蛀茎杆３．３２次，三代破坏棉铃９．９７个、嫩头２．４４个、茎杆１．２６次。Asian corn borer Ostrinia furnacalis has been a important pest in the cotton field. It lays on the cotton and the larvae can feed on some organs of cotton, such as the growing points, squares, bolls, main stems. There is a very significant difference on the distribution between the same instar and different cotton organs. One larva damages 3.373 units of the cotton organs on the 2nd generation and 2.202 units on the 3rd generation during the lifetime of larva. The larvae of a mass of egg can gamage 7.46 squares, 7.12 growing points, 3.32 bolls and 3.32 main stems on the 2nd generation and 9.97 bolls, 2.44 groqing points and 1.26 main stems of cotton on the 3rd generation according to the liferate of different instar.

关 键 词：玉米螟 棉花 分布 危害 

分 类 号：S435.622.9[农业科学—农业昆虫与害虫防治] S435.132[农业科学—植物保护]