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为给水稻直播田草害的化学防控提供依据,通过2年田间试验研究了10%氰氟.精噁唑EC(乳油)对水稻直播田千金子的控制效果和应用安全性。结果表明,氰氟.精噁唑对直播稻田6~7叶期的千金子具有良好的防除效果,有效成分用量75~90 g/hm2药后10 d的密度防效可达85%,药后20 d的密度防效可达90%以上、鲜重防效可达98%;相同用药量的密度防效显著优于对照药剂氰氟草酯。施用氰氟.精噁唑能显著提高水稻产量,增产效果达19.18%～27.41%。氰氟.精噁唑可作为水稻直播田防除大龄千金子的优良备选药剂。
In order to provide a basis for the chemical control of direct seeding weeds in rice field, the control effect and application safety of 10% cyanofluoroacetic acid (EC) EC on the direct seeding of rice by two years of field experiments were studied. The results showed that cyanofenoxazole had a good effect on the removal of cadmium in direct seeding rice fields from 6 to 7 leaves. The effective dose of 75 ~ 90 g / hm2 was 85% The control effect of density on the 20th day was over 90% and the control effect on fresh weight was 98%. The density control effect of the same dosage was better than the control drug cyhalofop. Application of cyanuric fluoride. Foxazole can significantly increase the yield of rice, increased yield of 19.18% ~ 27.41%. Cyanuride, which can be used as an excellent candidate for the prevention and control of the golden age of rice in direct seeding fields.