摘要
在二点委夜蛾重发地,小麦收获后立即用玉米秸秆还田机将麦残体分别粉碎1遍和2遍后还田,以小麦收获后麦秸直接散落在田间为对照(CK),研究了粉碎麦秸对夏玉米田二点委夜蛾的防治效果。结果表明:粉碎麦秸人为破坏了二点委夜蛾成虫的活动和产卵环境,能明显降低田间幼虫数量,对二点委夜蛾的防治效果达到85%以上,是1项防治二点委夜蛾简便、易行、省工、节时、有效的农业措施,且利于秸秆腐烂和农事操作。麦秸粉碎1遍对二点委夜蛾就有较好的防治效果(87.85%),粉碎2遍效果(90.38%)更佳。
The experiment site was selected in P. lepigone seriously-occurance area. Wheat residue crushing machines were used to crush wheat residue one and two times instantly after wheat harvesting. The objectives of this study were to investigating the control effect of crushing wheat residue on P. lepigone, compared with straw directly return to fields （CK） . The results showed that crushing wheat residue could disturb spawning environment of P. lepigone and also declined the number of larvas in the fileds, the control effect could reach 85% or higher. Residue crushing was an easy, labor-saving, time-saving and effective agricultural measurement, crushing one time could reach a good control effect（87.85%） and crushing two times could reach higher （90.38%）.
出处
《河北农业科学》
2013年第1期9-11,18,共4页
Journal of Hebei Agricultural Sciences
基金
河北省科技厅项目(11220301D)
关键词
粉碎麦秸
二点委夜蛾
防治效果
玉米田
Crushing wheat residue
Proxenus lepigone
Control effect
Wheat fields
