论文部分内容阅读
为了“贯彻预防为主,综合防治”的植保方针,探讨安全、有效、经济、简便的稻虫综合防治措施,近几年来,我们在一个大队约4,500亩稻田面积上开展了以保护和利用天敌为主要内容的稻虫综合防治研究,收到了明显的经济效益。综防区全年农药投资平均每亩为1.65元,较对照区(邻近大队)2.71元,降低39.1%;综防区亩产稻谷985.5斤,较对照区928.3斤,增产6.2%。同时,由于农药用量、次数减少,对稻田生态系的稳定,有益生物群落的增长;害虫抗药性的延缓,农药污染环境的减轻都有十分重要的意义。本文着重从天敌在稻虫综合防治中控制叶蝉、飞虱的效果以及贯彻综合
In order to conduct a comprehensive, preventative and comprehensive prevention and control policy and explore a safe, effective, economical and simple integrated pest and pest management plan, in recent years we have conducted a project to protect and utilize natural enemies on an area of about 4,500 mu of paddy fields. As the main content of rice pest integrated control research, received significant economic benefits. In the comprehensive prevention area, the average pesticide investment per mu for the whole year was 1.65 yuan, a decrease of 39.1% from the comparative area (nearby brigade) of 2.71 yuan. The area for mu yielding rice in the comprehensive prevention area was 985.5 kg, 928.3 kg more than the control area, an increase of 6.2%. At the same time, due to the decrease of pesticide dosage and times, the stability of paddy field ecosystem and the growth of beneficial biological communities, the delay of pest resistance and the alleviation of pesticide-polluted environment are of great significance. This article focuses on the control of leafhoppers and planthoppers from natural enemies in the integrated control of rice pests and implement the comprehensive