氰氟草酯施用技术对直播稻田稗草防除效果的影响  

Effect of Cyhalofop-Butyl Against Weeds in Direct-Seeded Rice

作　　者：马洪文[1] 贺奇[1] 冯伟东[1] Ma Hongwen;He Qi;Feng Weidong(Crops Institute,Ningxia Academy of Agriculture and Forestry Sciences,Yongning,Ningxia 750105)

机构地区：[1]宁夏农林科学院农作物研究所,宁夏永宁750105

出　　处：《宁夏农林科技》2020年第5期54-55,共2页Journal of Ningxia Agriculture and Forestry Science and Technology

基　　金：宁夏回族自治区重点研发计划项目(2019BBF02026)。

摘　　要：为明确氰氟草酯施用技术对直播稻田稗草的防除效果,采用田间试验的方法,研究氰氟草酯不同施用时期、施用量对直播稻田稗草防除效果的影响。结果表明,同一施用时期不同施用量处理间对稗草的防除效果没有显著差异,相同施用量不同施用时期处理间对稗草的防除效果有极显著差异;在稗草3.0~4.0叶时用25%氰氟草酯250~300 mL/667 m^2喷雾防除,即可取得较好的除草效果。In order to test effect of cyhalofop-butyl against weeds in direct-seeded rice,field trials were used to clarify the effect of different stages and application amount of cyhalofop-butyl against weeds in direct-seeded rice.The results showed that the effect of cyhalofop-butyl at the stage with different amounts against weeds had no significant differences;while the effect of cyhalofop-butyl at different stages with the same amount against weeds had extremely significant differences.At the stage of weeds with 3.0~4.0 leafs,the effect of 25%cyhalofop-butyl with amount of 250~300 mL/667 m2 against weeds was better.

关 键 词：直播稻 稗草 氰氟草酯 防除效果 

分 类 号：S451.21[农业科学—植物保护]