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[目的]明确31%苯·吡·甲草胺泡腾颗粒剂防除早晚两造水稻移栽田一年生杂草的防除效果、使用剂量、使用适期及其安全性。[方法]采用田间小区试验方法。[结果]该药剂在水稻移栽返青期,推荐剂量186.0~372.0 g a.i./hm2,能够有效防除一年生禾本科杂草、阔叶杂草和莎草科杂草,重点防除稗草、丁香蓼、水花生、碎米莎草和水虱草等杂草。[结论]在推荐使用剂量内对水稻安全,但高剂量会产生一定的药害,是一种方便高效经济安全的水稻移栽田除草剂。
[Objective] The study aimed to clarify the control effect, dosage, usage duration and safety of 31% benzenepyridium alachlor effervescent granules for controlling annual weeds in rice fields transplanted in fields of morning and night. [Method] The field plot test method was adopted. [Result] The recommended dosage of 186.0 ~ 372.0 g ai / hm2 during the transplanting and rejuvenation of rice could effectively control annual grass weeds, broadleaf weeds and sedge weeds, with emphasis on the control of barnyardgrass, Water peanut, broken beech and water weeds and other weeds. [Conclusion] The rice was safe in the recommended dose, but high doses would produce certain phytotoxicity. It is a herbicide for rice transplanting field which is convenient, efficient and safe.