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[目的]缓和稻田杂草群落恶性演替、使稻田杂草防除规范化,高效防治稻田难治杂草。明确50%嘧苯胺磺隆水分散粒剂、5%嘧啶肟草醚乳油对水田恶性杂草防治效果及其安全性。[方法]试验在水稻插秧前、插秧后分期施药,采用毒土法、茎叶喷雾施药,进行田间药效试验。[结果]50%丙草胺乳油+50%嘧苯胺磺隆水分散粒剂混用,总草防效达97.6%;水稻插秧前施用50%丙草胺乳油,封闭除草,插秧后施用5%嘧啶肟草醚乳油,总草防效达95.7%。[结论]50%嘧苯胺磺隆水分散粒剂、5%嘧啶肟草醚乳油在推荐使用剂量内对水稻安全,可有效控制水田恶性杂草。
[Objective] The research aimed to alleviate the vicious succession of weed community in paddy field, standardize weed control in paddy field, and control refractory weeds in paddy field efficiently. To clarify the effect of 50% pyrimidine sulfonated water dispersible granules and 5% saflufenacil EC on the control of weeds in paddy field and its safety. [Method] The experiment was conducted before rice transplanting and after rice transplanting. The soil was sprayed with poisonous soil and stems and leaves, and the field efficacy test was conducted. [Result] 50% acetochlor EC + 50% pyrimidine sulfonamide water dispersible granule was mixed with 97.6% of the total herbicide. The rice was pre-transplanting with 50% Simethrin EC, total herb control effect of 95.7%. [Conclusion] 50% pyrimidine sulfonated water dispersible granule and 5% saflufenacil EC were safe to rice in the recommended dosage and could effectively control the weeds in the paddy field.