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嘧啶氧磷是高效广谱性有机磷杀虫剂,具有触杀、胃毒和渗透作用,药效期较长。据报道用于水稻,可有效地防治稻瘿蚊、稻纵卷叶螟和水稻螟虫。我们在湖北600多亩稻田中,亩用50%嘧啶氧磷乳油125～150克,即有效成分为63～75克,以地面常量、地面低量和飞机低量三种方式喷雾防治稻飞虱,取得很好的防治效果。地面常量喷雾,用工农16型手动喷雾器,亩用50%乳油150克,亩喷液量60公斤,在水稻乳熟期施药。三天后防治稻飞虱的效果:卵孵化高峰期,1～2龄幼虫占90%的处理区为85.2%;卵孵化高峰期后,3～4龄幼虫占74%的处理区为92.7%。
Pyrimidine phosphorus is a highly efficient broad-spectrum organophosphate insecticide, with contact kill, stomach poisoning and infiltration, longer duration of efficacy. It has been reported that for rice, it is effective in controlling rice gall midge, leafroller and rice stem borer. We in 600 acres of paddy fields in Hubei, mu with 50% pyrimidine phosphorus 125-150 grams of cream, that is, the active ingredient of 63 to 75 grams, with ground constant, low ground and the aircraft three ways to spray control of planthopper , Made a very good control effect. Floor constant spray, with a worker-peasant type 16 manual sprayer, 150 grams of mu with 50% EC, mu amount of spray 60 kg, rice millet ripening application. Three days after the planthopper control effect: the peak of egg hatching, 1 ~ 2 instar larvae accounted for 90% of the treated area was 85.2%; 3 ~ 4 larvae after the peak period of hatching 74% of the treated area was 92.7%.