40%三甲苯草酮水分散粒剂对稻茬麦田杂草的防效及小麦的安全性  

Efficacy of Tralkoxydim 40% WDG and Its Selectivity to Wheat in Fields with Rice Stubble

作　　者：张伟星 刘永忠[2] 徐建伟 王红春[3] ZHANG Wei-xing;IU Yong-zhong;XU Jian-wei;WANG Hong-chun(Jiangsu Agrochem Laboratory Co.,Ltd,Changzhou 213022,China;Plant Protection and Quarantine Station of Jingjiang City,Taizhou 214500,China;Institute of Plant Protection,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China)

机构地区：[1]江苏省农用激素工程技术研究中心有限公司,江苏常州213022 [2]江苏省靖江市植保植检站,江苏靖江213022 [3]江苏省农业科学院植物保护研究所,江苏南京210014

出　　处：《杂草学报》2017年第4期30-35,共6页Journal of Weed Science

基　　金：江苏省农业三新工程(编号:SXGC[2016]256)

摘　　要：田间小区试验验证40%三甲苯草酮水分散粒剂(water dispersible granule,简称WDG)对稻茬麦田杂草的防效及其对小麦的安全性。结果表明,在越冬前期(禾本科杂草2叶期)施用40%三甲苯草酮水分散粒剂100~200 g/667m2或在早春(禾本科杂草4叶期)施用40%三甲苯草酮水分散粒剂150~200 g/667 m2,宁麦13的株高、茎蘖数、理论产量与人工除草处理无显著差异,对小麦安全;越冬前期施用40%三甲苯草酮水分散粒剂100~200 g/667 m2对禾本科杂草的防效均高于92%,早春施用40%三甲苯草酮水分散粒剂150~200 g/667 m2对禾本科杂草防效均高于93%。相同剂量条件下,在越冬前期施用40%三甲苯草酮WDG对禾本科杂草的防效高于年后早春施药。The efficacy and selectivity of tralkoxydim 40%WDG in wheat with rice stubble was investigated.Tralkoxydim 40%WDG sprayed at 100~200 g/667 m 2 during early winter(2 leaves stage of grassy weeds)or at 150~200 g/667 m 2 in early spring(4 leaves stage of grassy weeds)did not affect plant height,tiller number,effective panicle number,grain number per panicle and theoretical whear grain yield(Ningmai 13)compared to manual weeding,therefore being safe to wheat.At 100~200 g/667 m 2 tralkoxydim applied before winter provided higher than 92%control of grass weeds and above 93%when sprayed at 150~200 g/667 m 2 during early spring.The efficacy of tralkoxydim 40%WDG against grassy weeds applied before winter was higher than when applied during early spring at the same doses.

关 键 词：40%三甲苯草酮 水分散粒剂 悬浮剂 稻茬小麦 防效 安全性 杂草 

分 类 号：S451[农业科学—植物保护]