有机硅助剂对草甘膦增效作用研究

进行了不同有机硅助剂对草甘膦防除非耕地杂草的增效试验。结果表明,有机硅Fairland 2625、Fairland 2626和Silwet 625可提高草甘膦防除非耕地杂草的速效性,杂草出现受害症状比未添加有机硅助剂的处理提前2～3 d;三种有机硅助剂对禾本科杂草的株防效与鲜重防效以及对阔叶杂草的株防效无显著影响,但均可显著增加对阔叶杂草的鲜重防效。在以草甘膦防除非耕地杂草时,建议将95%草甘膦铵盐可溶性粒剂与有机硅助剂Fairland 2625、Fairland 2626和Silwet 625按每40 g制剂添加5 ml助剂的比例推广使用。

Study on Enhancement Effect of Organic Silicon Adjuvants on Glyphosate

The enhancement effect of organic silicon adjuvants on glyphosate for controlling weeds in non-crop land was performed in field. The results shown that the damage symptom of weeds treated by the glyphosate with the addition of organic silicon adjuvants, Fairland 2625, Fairland 2626 and Siiwet 625, emerged more earlier than the treatments without organic silicon adjuvants by 2 to 3 days. It also indicated that the three kinds of organic silicon adjuvants had no obvious effect on the control efficacy to individual plant and fresh weight for gramineous weeds and no effect on the control efficacy to individual plant for broad-leafed weeds, but could significantly improved the control efficacy to fresh weight for broad-leafed weeds. Therefore, it was recommended that the 95% glyphosate-ammonium soluble granule and the organic silicon adjuvants as above could be mixed application at the ratio of 40g preparation to 5ml adjuvant, when using glyphosate to control weeds in non-crop land.