50%吡蚜酮水分散粒剂防治水稻白背飞虱效果研究

Effects of 50% Pymetrozine Water Dispersible Granule on Sogatella furcifera of Rice

为合理防治水稻白背飞虱,进行50%吡蚜酮水分散粒剂防治水稻白背飞虱(Sogatell furcifera)的田间药效试验。结果表明:50%吡蚜酮水分散粒剂对稻飞虱具有较好的防治效果,且持效期较长。使用50%吡蚜酮水分散粒剂14g/667m2、16g/667m2处理,药后7d的防效达94.3%、97.10%。经调查分析,吡蚜酮水分散粒剂对水稻生产安全,可在生产中推广应用。

In order to control Sogatella furcifera efficiently,50% Pymetrozine water dispersible granule application on Sogatella furcifera of rice was tested in paddy field.The results showed that 50% Pymetrozine water dispersible granule has a good control effect on Sogatella furcifera of rice,and effective duration is longer.Application 14g/667m^2,16g/667m^2 of 50% Pymetrozine water dispersible granule on rice after 7ds the control effect reached 94.3%,97.10%,respectively.Pymetrozine water dispersible granule is not harmful for production of rice in test,and it＇s appropriate to extend on rice cultivation.