马铃薯除草剂筛选试验研究

Experimental Investigation on Screening Heribicide for Potato

[目的]研究6种除草剂的除草效果及对马铃薯产量的影响。[方法]按照推荐剂量和施用方法,喷施6种马铃薯苗前及苗后除草剂,调查防效和安全性,以及对株高和产量的影响。[结果]苗后施用噁草酸和砜喹嗪草酮除草效果较好,施用15 d后的株防效分别为67.9%和62.6%,施用30 d后的株防效分别为56.6%和62.3%。人工除草、施用苗前除草剂乙草胺、施用苗后除草剂精喹禾灵、灭草松和噁草酸产量较好,较对照增产10.3%~20.6%。[结论]生产中优先推荐施用苗后除草剂噁草酸,除草效果好,产量较高,药害轻,不易造成裂薯。

[Objective]Six different herbicides were used to study the weeding effect of each herbicide and influence on potato yield.[Method]Spraying 6 kinds of herbicides before and after potato seedling according to the recommended dosage and application method and investigate the effect and safety of weed control,as well as its impact on plant height and yield.[Result]Oxalic acid and sulfoquinazinone had better weed control effects after seedling,and the plant control effects were 67.9%and 62.6%after 15 days,56.6%and 62.3%after 30 days.The yield of artificial weeding,application of acetochlor before seedling,application of quizalofop-p-ethyl,bentazone and oxalic acid after seedling was better,which increased by 10.3%-20.6%compared with the control.[Conclusion]It was recommended to apply the herbicide oxalic acid after seedling,which had good weeding effect,high yield and light chemical damage and is not easy to cause potato cracking.