32%苯噻酰苄乙防除稻田杂草的效果

目的]探索新型、高效除草剂的有效、安全使用技术。方法]进行了多种除草剂对沿江圩区稻田杂草防除的药效试验。结果]32%苯噻酰苄乙WP是苯噻酰草胺、苄磺隆、乙草胺的复配剂,比乙草胺安全,比53%苯噻酰苄价格低,具有杀草谱广、作用时间长、施用方便、对水稻安全的特点。结论]在水稻移栽(活棵)后,用32%苯噻酰苄乙WP 750~900 g/hm2拌毒土或尿素撒施,对稻田主要杂草稗草、千金子、多花水苋、碎米莎草的防除效果可稳定在85%以上,对水稻安全。

Effects of Controlling Weed in Rice Field with 32% Mefenacet·Bensulfurou-mthyl Acetochlor

Objective] The study aimed to explore the effective and safe using techniques for new high efficient herbicides.Method] The effect experiment of many kinds of herbicides on controlling weed in rice field along the Yangtze River region was conducted.Result] 32% mefenacet·Bensulfurou-mthyl acetochlor WP was the complex agent of mefenacet,bensulfuron-methyl and acetochlor.It was safer than acetochlor,cheaper than 53% mefenacef bensulfuron methyl and was a broad spectrum herbicide with long effect time,convenient application and safe to rice.Conclusion] After the rice transplanting,the control effects of broadcasting 32% mefenacet·Bensulfurou-mthyl acetochlor WP 750～900 ?g/hm2 mixed with toxic soil or urea on the main weeds of Barnyard grass,Leptochloa chinensis,Ammamiamultiflora and Rice galingale were steady over 85%,with safety to rice.