新型除草剂精草铵膦对柑橘园杂草的田间防效

Field Efficacy of Glufosinate-P against Weeds in Citrus Orchard

[目的]为评价新型除草剂精草铵膦对柑橘园杂草的田间防效。[方法]采用定向茎叶喷雾法,分别于2018、2019年进行了10%精草铵膦钠盐可溶液剂的田间小区试验。[结果]10%精草铵膦钠盐可溶液剂570~870 g a.i./hm^2对柑橘园阔叶杂草、禾本科杂草均具有较好的防效,药后30 d,总草株防效和鲜重防效分别为94.9%~98.8%、95.0%~98.5%,与对照药剂200 g/L草铵膦水剂1400 g a.i./hm^2处理相当。[结论]精草铵膦可作为防治柑橘园或非耕地杂草的高效低用量药剂,具有较好的推广应用前景。

[Aims]This study aims to evaluate the field efficacy of a new herbicide glufosinate-P against weeds in citrus orchard.[Methods]Field trials were conducted in 2018 and 2019 by methods of directive stem foliar spraying.[Results]The glufosinate-P 10%SL had good control efficacy to the grassy weeds and the broadleaf weeds in citrus orchard at 570-870 g a.i./ha.The plant quantity effect and the fresh weight effect were 94.9-98.8 and 95.0-98.5%respectively after 30 days after treatment,it is equivalent to the efficacy of glufosinate-ammonium at 1400 g a.i./ha.[Conclusions]Glufosinate-P can be used as a high efficacy and low dosage pesticide for control of weeds in orchard or no-crop field,it has a good prospect of popularization and application.