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安融乐对2种除草剂防除冬小麦田禾本科杂草的增效作用

2019-10-21程文超李光宁相世刚强胜宋小玲张瑞萍夏爱萍

杂草学报 2019年1期

程文超 李光宁 相世刚 强胜 宋小玲 张瑞萍 夏爱萍

摘要:安融乐(3%卵磷脂·维生素E悬乳剂)是从大豆中提取的新型生物助剂,已经广泛应用于农药特别是除草剂的增效。为明晰安融乐作为助剂与麦田除草剂混用后是否能提高除草剂对杂草的防除效果,于2017年12月至2018年6月开展了安融乐对不同浓度麦田除草剂50%异丙隆可湿性粉剂(1.800、2.250、3.375 kg/hm2)和5%唑啉草酯乳油(840、1 050、1 575 mL/hm2)的增效效果以及对小麦安全性的田间药效试验。结果表明,45 mL/hm2 安融乐与3个剂量下2种供试除草剂混用都能显著提高对看麦娘的防除效果,且中剂量下效果最为明显。安融乐与2种中剂量供试除草剂混用后45 d对看麦娘的株防效、鲜重防效分别提高20.03、17.25百分点及15.44、19.79百分点。安融乐与3个剂量下2种供试除草剂混用均对小麦安全。另外,中剂量下2种供试除草剂与45 mL/hm2安融乐和45 g/hm2碧护(0.136%赤·吲乙·芸苔可湿性粉剂)混用对看麦娘的防治效果与不加碧护的效果相当,但显著促进了小麦生长。

关键词:安融乐;增效剂;异丙隆;唑啉草酯;小麦田;杂草防除

中图分类号:S451.22+1  文献标志码:A  文章编号:1003-935X(2019)01-0064-07

Abstract:AnnGro (3% lecithin and vitamin E suspension concentrate) is a new type of biological spray synergistic adjuvant obtained from soybeans and widely applied together with pesticides,in particular,herbicides. To determine whether AnnGro as an adjuvant can improve herbicide control efficacy to weeds in wheat,field experiments of the possible synergistic effect of AnnGro on 50% isoproturon WP (1.8,2.25,3.375 kg/hm2)and 5% Pinoxaden EC (840,1050,1 575 mL/hm2) in winter wheat were conducted during Dec.,2017 to June,2018. Weed control efficacy of both herbicides at the doses used was improved significantly by tank mixing with AnnGro,especially the intermediate dosage. Weed mortality and efficacy based on fresh weight of the experimental herbicides at intermediate dosages tank-mixed with 45mL/hm2 AnnGro were improved by 20%,17%,and 15%,20%,respectively,compared with the herbicides alone. Both herbicidesat intermediate dosages tank-mixed with either 45 mL/hm2 AnnGro or 45 g/hm2 VitCat(0.136% GA·IAA·BR WP)similarly controlled grassy weeds compared to that without VitCat,and the growth of the wheat was also improved.

Key words:AnnGro;synergistic adjuvant;isoproturon;pinoxaden;wheat field;weed control efficacy

安融乐是由南非西北大学发明的从大豆中提取的新型生物增效助剂,在1947年南非第36号法案中作为农药助剂注册,主要成分为卵磷脂和维生素E(www.AnnGro.com)。研究表明,安融乐添加到种子肥料中使用可以促进玉米根和胚芽鞘的生长,提高玉米产量[1]。我国学者对安融乐也有许多研究和报道,安融乐添加在水溶肥料中可以起到增加肥料润湿性能的效果……

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