摘要
狼毒大戟(Euphorbia fischeriana)在草原上的大量分布严重影响草原生态和草地生产力,为筛选出最适宜防除狼毒大戟的除草剂、探索最佳防治时间和最佳施药量,通过对5种化学除草剂设置不同的施药量,在不同的施药时间对狼毒大戟进行防治试验。结果表明,48%三氯吡氧乙酸乳油防治效果最佳,防效可达99%,最佳施药时间为盛花期,最佳施药量为4.2 L/hm2。20%氯氟吡氧乙酸乳油、72%2,4-滴二甲胺盐水剂、48%麦草畏水剂、75%二氯吡啶酸可溶性粒剂防效均在30%左右,不适用于狼毒大戟的防治。
Euphorbia fischerianaiswidely distributed in grasslands thereby seriously affectinggrassland ecology and productivity. In order to select the most suitable herbicides to control E. fischeriana,explore the best control time and dose,five types of chemical herbicides were compared. The best control at 99% was obtained with trichloro pyridine oxygen ethanoic 48% EC with an optimal dose of 4. 2 L/hm2 at the peak of flowering. Fluroxypyr 20% EC,2,4-D dimethyl amine salt 72% AS,dicamba 48% AS and clopyralid 75% SG were unable to prevent E. fischeriana,having only about 30% efficacy.
作者
迟晓雪
马崇勇
邹志和
王伟共
蒋立宏
魏红
高海滨
CHI Xiao -xue;MA Chong -y on g;ZHOU Z h i-h e;W A N G We i-g on g;JIANG L i-h on g;WE I Hon g;G AO H a i-b in(Inner Mongolia HulunBuir Grassland Station, HulunBuir 021008 , China;Inner Mongolia Grassland Station, Hohhot 0 1 0 0 2 0 ,China;Hailar Grassland Administration, Hailar 021008 , China;Inner Mongolia HulunBuirEwenk Grassland Station,Ewenk 0 2 1 0 0 8 ,China)
出处
《杂草学报》
2017年第2期55-60,共6页
Journal of Weed Science
关键词
狼毒大戟
化学除草剂
药效
生态环境
可持续发展
Euphorbia fischeriana
chemical herbicides
efficacy
ecological environment
sustainable development
