南方水稻黑条矮缩病防控措施防效比较及效益分析

目的]比较南方水稻黑条矮缩病不同防控措施的防效及效益,为生产上提供经济有效的防控技术参考。方法]通过大田试验比较南方水稻黑条矮缩病不同防控措施的防效及效益。结果]不同防控措施试验表明,秧田期全程覆盖防虫网育秧,本田关键期及时防控白背飞虱,对南方水稻黑条矮缩病的防效高达94.13%,防控效果和稻谷产量与其他防控措施相比差异显著,可提高种粮效益,减少农药使用量,保护农田生态,是有效防控南方水稻黑条矮缩病发生危害经济有效的防控措施组合。结论]在南方水稻黑条矮缩病防控措施上要秧田和本田防控并重,应采取"治虫防病,防前控后,治秧田保大田"的防控对策。

Comparison of Control Effect and Benefits of Prevention and Control Measures for Southern Rice Black-streaked Dwarf Disease

Objective] The aim was to compare control effect and benefits of prevention and control measures for southern rice black-streaked dwarf disease and provide reference for the production.Method] We compared control effect and benefits of prevention and control measures for southern rice black-streaked dwarf disease through field trials.Result] The prevention and control measures test showed as followed: when the seedlings was covered by net all the way at seedling bed period, and Sogatella furcifera(Horváth)was controlled in time at prime field period, the control effect on southern rice black-streaked dwarf disease reached 94.13%, and its control effect and grain yield had significant difference with other prevention and control measures.The measure could improve grain benefit, reduce pesticide application, and protect farmland ecosystem, so it was an economic and efficient prevention and control measure to control southern rice black-streaked dwarf disease.Conclusion] To control southern rice black-streaked dwarf disease should combine seedling field controlling with prime field controlling, and the prevention and control countermeasures include controlling insects and preventing diseases, prevention before and controlling after, controlling seedlings field and protecting field.