摘要
为明确26%苯磺隆·唑草酮WP防除春小麦田一年生杂草田间药效及对春小麦的安全性,采用茎叶喷雾法,对26%苯磺隆·唑草酮WP有效成分含量为23.4、31.2、39.0、62.4 g/hm^2共4个浓度下的除草效果进行测定。结果表明:在春小麦3叶至5叶期施药,26%苯磺隆·唑草酮WP有效成分用量为31.2~39.0 g/hm^2时,对野芥菜、密花香薷和藜等阔叶杂草株防效果达79%以上,鲜重防效80%以上。不同剂量的26%苯磺隆·唑草酮WP使各处理区小麦增产7.88%以上,该药剂对春小麦田一年生阔叶杂草防除效果显著且对作物安全。
In order to clarify the field efficacy of 26% Benzenesulfuron azoxone WP as well as the safety of spring weed in spring wheat field,the herbicidal efficacy of 26% Benzenesulfuron azoxone WP was determined by spraying 23.4,31.2,39.0 and 62.4 g/hm^2.The results showed that when the effective amount of 26% Benzenesulfuron azoxone WP was 31.2-39.0 g/hm^2,the control effect on broad-leaved weeds such as Brassica juncea(L)Czern et coss Lepidium obtosum Basin,Elsholtzia densa Benth,and Chenopodium album L.was more than 79%,and the fresh weight control effect was more than 80%.The yield of wheat in each treatment area increased by more than 7.88% with different dosages of 26% Benzenesulfuron azoxone WP.This agent has a significant effect on controlling annual broad-leaved weeds in spring wheat fields and is safe for crops.
作者
朱海霞
ZHU Haixia(Academy of Agriculture and Forestry,Qinghai University,Scientific Observing and Experimental Station of Crop Pest in Xining in Ministry of Agriculture,Key Laboratory of Agricultural Integrated Pest Management in Qinghai Province,Xining 810016,China)
出处
《青海大学学报》
2020年第4期7-11,共5页
Journal of Qinghai University
基金
国家重点研发计划项目(2018YFD020040511)。
