抗性二化螟综合治理研究初报

通过一系列田间试验 ,明确了二化螟发生与水稻播、栽期及品种间的关系 ,发现在常熟地区将水稻播、栽期分别推迟到 5月 2 0日和 6月 2 0日后 ,可以有效地减轻螟害的发生。在目前使用的和推荐使用的 10种治螟药剂中 ,防治抗性二化螟的单剂以三唑磷、乐斯本和锐劲特防效 (>85 % )较好 ,复配剂以三唑磷与其它有机磷或阿维菌素的复配制剂防效为最好 ,防效均在 90 %以上 ,其中稻虫胺 ,克螟劲的防效达 10 0 %。频振诱杀灯对二化螟成虫也有一定的诱杀作用。在此基础上 ,制定并验证了一套治理抗性二化螟的综防技术

Primary report on integrate control of resistant rice stem borer, Chilo suppressalis (Walker)

The effect of rice planting date on the occurrence of rice stem borer was revealed by experiments.In Changshu area,if rice was sowed after 20th May and transplanted after 20th June,there would be fewer eggs laid by moths of 1st generation on the seedlings.And the damadge would be less.In the conventionally used and recommended insecticides,triazophos,chlorpyrifos and fipronil showed good control effect (relative control rate>85%).And the mixtures of triazophos with some other organophosphates or avermectin displayed best control(relative control rate>90%).However,nereistonxin insecticide,monosultap and its mixture with Bt had lost their effect to control this pest.High frequency lights also had good attract effect to the moths.Based on these,an integrated management for controlling resistant rice stem borer was designed and tested.