30%五氟·丙·吡嘧可分散油悬浮剂水稻田除草药效试验  

Research on Penoxsulam·Pretilachlor·Pyrazosulfruon-ethyl 30%OD Controlling Weeds in Rice Fields of Direct Seeding Cultivation

作　　者：王征宇 葛亮亮 贾增坡[1] WANG Zhengyu;GE Liangliang;JIA Zengpo(Anhui Fengle Agrochemical Co.,Ltd.,Hefei 230031,China)

机构地区：[1]安徽丰乐农化有限责任公司,合肥230031

出　　处：《世界农药》2020年第3期46-50,62,共6页World Pesticide

摘　　要：随着近年水稻直播田面积不断增加,水稻直播田中杂草防除存在诸多问题,如一季稻多次用药才能有效防除杂草,杂草抗性逐年增加,除草剂用量及费用不断增多。为了缓解以上问题,开发了30%五氟·丙·吡嘧可分散油悬浮剂(OD),并进行了对水稻直播田中杂草防效的研究。试验表明,30%五氟·丙·吡嘧OD用药量为360~900 g a.i./hm^2时在水稻直播田苗后早期封闭施用对一年生单、双子叶杂草防除效果优异:封闭效果好,持效期长,药后25 d,株和鲜重防效均在90%以上;对水稻安全性好。从多方面考虑,推荐30%五氟·丙·吡嘧OD施用剂量为360~540g a.i./hm^2,此制剂是水稻直播田杂草防除的有发展前景的产品。With increasing growth of planting area of direct seeding rice,there are many problems about the weeds control in rice fields of direct seeding cultivation,for example,effectively controlling weeds with more than a use of herbicides,the increase of weed resistant year by year,constant growth of herbicides volume and cost.Under this situation,penoxsulam·pretilachlor·pyrazosulfruon-ethyl 30%OD was developed and tested for controlling weeds in rice fields of direct seeding cultivation.The results showed that penoxsulam·pretilachlor·pyrazosulfruon-ethyl 30%OD at dosage of 360~900 g a.i./hm^2 had excellent control for annual monocotyledonous and dicotyledonous weeds when used after rice emerged and a long persistent with more than 90%control 25 days after use,and was safe to rice.Penoxsulam·pretilachlor·pyrazosulfruon-ethyl 30%OD was recommended to use at dosage 360~540 g a.i./hm^2 and considered to have a good prospect.

关 键 词：直播水稻 杂草 五氟·丙·吡嘧30%OD 防效 

分 类 号：TQ457[化学工程—农药化工]