棉田主要天敌在棉稻作物间相互转移扩散规律初步研究  

Primary study on transition and diffusion of main natural enemies between cotton fields and paddy fields

作　　者：黄明松[1] 何洪俊[1] 樊孝贤[1] 柯道秀[1] 夏珍芳 刘思义[1] 

机构地区：[1]湖北省农科院植保所

出　　处：《湖北农业科学》1995年第5期37-40,共4页Hubei Agricultural Sciences

摘　　要：对相邻的棉田和稻田天敌种类及数量调查结果表明，在水稻生长前期，天敌在棉、稻作物间转移处于动态平衡状态。当水稻成熟时，天敌大量由稻田转向棉田和田边杂草。因此，应合理安排作物布局，为天敌提供“桥梁田”，减少天敌损失量。Species and population of the natural enemies were investigated in cottonfields and the adjacent paddy fields.The result showed that in the early stage of rice growth,the transitions of the natural enemies between cotton. fields and rice fields maintained dynam-ic equilibrium. As the rice grows mature ,the natural enemies immigrated into cotton fieldsand weeds from rice fields. Therefore ,crop varieties should be properly arranged in order tosupply the natural enemies with transitional habitat ,which led to less population decrease ofnatural enemies.

关 键 词：天敌 转移扩散 棉花 水稻 

分 类 号：S47[农业科学—农业昆虫与害虫防治]