近年来,随着我县水田耕作制度的变化,尤其是超级稻的大面积推广,稻田病虫害发生了较大变化,爆发更频繁,危害更严重。加上稻农长期大剂量、高频次地使用单一农药,使各类病虫产生了不同程度地抗药性,大大增加了病虫害防治难度。为提高水稻病虫害防治效果,南县农业局调查了益阳、资阳和赫山地区的用药情况,对单项技术进行配套和组合,摸索总结出了一套适用于水稻主要病虫害控害 In recent years, with the change of paddy farming system in our county, especially the large-scale popularization of super rice, there has been a great change in the paddy field pests and diseases, the outbreaks are more frequent and the harm is more serious. Coupled with long-term high-dose rice farmers, high-frequency use of a single pesticide, so that various pests and diseases have varying degrees of resistance, greatly increased the difficulty of pest control. In order to improve the prevention and control of pests and diseases in rice, Nanxian Bureau of Agriculture investigated the medication situation in Yiyang, Ziyang and Heshan areas, matched and combined the individual technologies, and explored a set of methods suitable for the control of main pests and diseases of rice