不同除草剂及其复配剂对加拿大一枝黄花防除效果评价

Evaluation of the Control Effect of Different Herbicides and Compounds on Solidago canadensis

为探索可替代甲磺隆的加拿大一枝黄花除草剂及配方浓度,连续2年,共筛选15种不同浓度及配方的单剂及复配药剂。结果表明,总体上复配药剂防效优于单剂,其中35%氯吡嘧磺隆WG 1000倍液+30%草甘膦铵盐AS 100倍液在控制加拿大一枝黄花生长的速效性和长效性上最为突出。44%丁噻隆SC 100倍液+30%草甘膦铵盐AS 100倍液与48%麦草畏AS 500倍液+30%草甘膦铵盐AS 100倍液药后30 d防效显著,但药后45和60 d防效明显下降。单剂中,44%丁噻隆SC 200倍液的效果最显著。

In order to explore and select the herbicide and formula concentration that could replace metsulfuron-methyl,15 kinds of single and compound herbicides with different concentration and formula were screened in this experiment for two years.The results showed that the control effect of compound herbicides was better than that of single herbicides in general.Among them,35%halosulfuron-methyl WG 1000-fold solution+at 30%glyphosate ammonium salt AS 100-fold solution was the most prominent in controlling the growth of Solidago canadensis.44%tebuthiuron SC 100-fold solution+30%glyphosate ammonium salt AS 100-fold solution and 48%dicamba AS 500-fold solution+30%glyphosate ammonium salt AS 100-fold solution had significant control effect at 30 days after the treatment,but decreased significantly at 45 days and 60 days after the treatment.Among the single herbicides,44%tebuthiuron SC 200-fold solution had the most significant effect.