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研究了34%丙溴磷.氟啶脲乳油防治水稻稻纵卷叶螟的适宜用药剂量、用水量和用药时间,结果表明:34%丙溴磷.氟啶脲乳油适宜用量在600 m l/hm2左右,药后35 d对稻纵卷叶螟的防效在85%以上;防治适期为稻纵卷叶螟幼虫初孵高峰期前4 d至幼虫3龄初期;用水量不低于150 kg/hm2,最好在300 kg/hm2以上,以保证防治效果。
The suitable dosages, water consumption and medication time of 34% profenofos-chlorpheniramine EC for control of rice leaf roller were studied. The results showed that the optimum dosage of 34% profenofos-150 was 600 ml / hm2 , The control effect on Cnaphalocrocis medinalis was over 85% after 35 days of treatment; the control period was the first 4 days before the first larvae of Larvae of Cnaphalocrocis medinalis were larvae; the water consumption was not less than 150 kg / hm2, preferably above 300 kg / hm2, in order to guarantee the prevention and cure effect.