土壤相对含水量对棉铃虫化蛹、羽化和生殖力的影响

作     者：苏战平 翟保平 张孝羲 Su Zhanping;Zhai Baoping;Zhang Xiaoxi

作者机构：南京210095 南京农业大学植物保护系!农业部病虫监测与治理重点开放实验室 

出 版 物：《中国农业科学》 (Scientia Agricultura Sinica)

年 卷 期：2000年第33卷第6期

页      面：104-106页

核心收录：

学科分类：09[农学] 0904[农学-植物保护] 090401[农学-植物病理学] 090402[农学-农业昆虫与害虫防治] 

基　　金：江苏省“九五”重大攻关项目!“棉铃虫控制技术”( BG-9651 3-3)的部分内容 

主　　题：棉铃虫 土壤含水量 生殖力 

摘      要：Sixth instar larvae of Helicoverpa armigera (Hbner) was allowed to pupate in smashed clay soil with different moisture levels and 3 simulated rainfall periods. The results of the experiment in the laboratory show that the soil moisture not only influenced the emergence of pupa , but also caused the declining of female’s fecundity. If rainfall happens just 3 days after the larvae tunneled into the soil and the soil relative moisture reaches 20%~80%, the female fecundity will be reduced by 44.2%~56.9%. While it happens before tunneling and the soil moisture is raised to the levels of 40%~80%, the reduction will range from 40.8% to 57.0%. But if it happens 5 days after tunneling, rainfall will have no significant effect on female fecundity.