草铵膦、百草枯、草甘膦对非耕地杂草的防效比较

Comparison of Control Effect on Non-arable Land Weeds of Glufosinate-ammonium, Paraquat and Glyphosate

【目的】探索50％草铵膦AS替代百草枯和草甘膦防除非耕地杂草的可行性。【方法】通过田间茎叶喷雾处理试验，比较草铵膦、百草枯和草甘膦对非耕地主要杂草的除草效果。【结果】50％草铵膦AS900ga．i．／hm2、900ga．i．／hm2（加喷雾助剂坎b理药后15d对各类杂草的株防效分别为92．20％、100％，与41％草甘膦AS1722ga．i．／hm2、25％百草枯sG900ga．i．／hm2处理药后15d的株防效（88．80％-92．35％、95．78％-96．15％）差异不显著；药后30d的株防效f94．56％～100％）与草甘膦的株防效（94．7％-100％）差异不显著，但显著高于百草枯的株防效（82．58％～84．59％），药后30d的鲜质量防效（95．13％-100％）与草甘膦（92．33％-100％）、百草枯（90．26％-94．94％）差异不显著。【结论】草铵膦可以替代百草枯和草甘膦，防除非耕地杂草，添加喷雾助剂效果更好。

[Aims] This study aims to explore the feasibility of controlling non-arable land weeds by using glufosinate- ammonium 50% AS rather than paraquat and glyphosate. [Methods] The effects in weeding of glufosinate-ammonium, paraquat and glyphosate on non-arable land were compared by filed foliage spray test. [Results] After 15 days after using glufosinate-ammonium 50% AS 900 g a.i./haand glufosinate-ammonium 50% AS 900 g a.i./ha（with spray adjuvant）, the controlling effect on various strains of weeds are 92.20-100% respectively. The difference of controlling effects on various weeds after using glyphosate 41% AS 1722 g a.i./ha and paraquat 25% SG 900 g a.i./ha （88.80-92.35%, 95.78-96.15%） for 15 days is insignificant. Controlling effect of using glufosinate-ammonium 50% AS 900 g a.i./ha and glufosinate- ammonium AS 900 g a.i./ha（with spray adjuvant） differs insignificantly from using glyphosate after 30 days, the former is 94.56-100% and the later is 94.7-100%. However, the percentage is much higher than paraquat （82.58-84.59%）, but the controlling effects of glufosinate-ammonium 50% AS （95.13-100%） after 30 days differs insignificantly from glyphosate （92.33-100%） and paraquat （90.26-94.94%）. [Conclusions] Glufosinate-ammonium can control weeds of non-arable land instead ofparaquat and glyphosate, and the effect is better if adding spray adjuvant.