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稻纵卷叶螟对水稻的危害很大,从我们大队来看,远超过二化螟及三化螟,已上升为水稻的主要害虫。三年来我们曾用1605、乙六粉、精制敌百虫、青虫菌和杀螟杆菌等不同农药,采用喷雾、泼浇和撒粉等不同施药方式进行防治,在良好气候情况下,效果一般尚可达百分之九十以上,但存在残效期短,难以兼顾两个盛蛾高峰的弱点。另外在天气下雨时,防治效果较差,一般只有百分之七十左右。去年我们根据广东省用杀虫脒防治害虫的经验,开始采用杀虫脒防治,稻纵卷叶螟取得了良好效果。今年我们于七月二日到三日两天内用本省建德县生产的百分之三十五杀虫脒乳剂每担水(约一百二十斤)
Rice leaf roller Caterpillar is very harmful to rice, from our brigade point of view, far more than Sesamia inferens and Borer, has risen to rice pests. In the past three years, we used different pesticides, such as 1605, B6 powder, refined trichlorfon, caterpillar fungus and bactericide, using spray, pouring and powdering to control different pesticides. Under good climatic conditions, the effect is general Still up to 90%, but there are short residual efficiency, it is difficult to take into account the peak of the two Sheng Miao weaknesses. In addition, when the weather is raining, the control effect is poor, generally only about 70%. Last year, according to the experience of prevention and control of pests by chlordimeform in Guangdong Province, we started to use chlordimeform control, and the rice leafroller has achieved good results. This year, we administered 35% of chlordimeform emulsion per day (about 120 kilograms) in Jiande County of our province between July 2 and March 3,