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混配除草剂对燕麦田杂草的防效及燕麦产量的影响

Effect of herbicides mixture on weed control efficacy and oat yield

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【作者】 苟智强赵桂琴刘欢柴继宽曾亮许兴泽闫车太黎蓉

【Author】 GOU Zhiqiang;ZHAO Guiqin;LIU Huan;CHAI Jikuan;ZENG Liang;XU Xingze;YAN Chetai;LI Rong;College of Pratacultural Science, Gansu Agricultural University/Key Laboratory of Grassland Ecosystem,Ministry of Education/Pratacultural Engineering Laboratory of Gansu Province/Sino-U.S.Centers for Grazing land Ecosystem Sustainability;

【通讯作者】 赵桂琴;

【机构】 甘肃农业大学草业学院/草业生态系统教育部重点实验室/甘肃省草业工程实验室/中-美草地畜牧业可持续发展研究中心

【摘要】 为了筛选适宜燕麦(Avena sativa)田使用的安全、高效的混配除草剂组合,选用96%精异丙甲草胺乳油和10%苄嘧磺隆可湿性粉剂、57%2,4-D丁酯乳油和10%乙羧氟草醚乳油按照不同比例两两组合,混配后施于燕麦田,研究其对燕麦田杂草的防除效果以及对燕麦安全性和产量的影响。结果表明,不同除草剂处理对杂草的防效差异显著(P <0.05),混配处理的防效普遍高于各单剂处理。T5和T9对杂草的防效最好,但后者对燕麦有药害。综合安全性、除草效果及对燕麦的增产作用,筛选出综合效应最佳的混配组合,即57%2,4-D丁酯乳油438.5 mL·hm–2+10%乙羧氟草醚乳油300 mL·hm–2(T12);其药后30 d的鲜重防效达87.99%,燕麦干草产量为9 875.3 kg·hm–2,燕麦种子产量为4 314.3 kg·hm–2

【Abstract】 In order to select suitable combinations of herbicides for oat fields,96% S-metolachlor in combination with 10%bensulfuron methyl and 57% 2,4-D butyl ester with 10% fluoroglycofen were evaluated in different ratios and concentrations for their weed control efficacy,oat yield,and safety.The results showed that there were significant differences among the treatments(P < 0.05).The average control effect of mixed herbicides was higher than that of the single agents: T5 and T9 had the highest weed control efficacy,but the latter injured oat plants.For a safe combination,weed control efficacy,and oat yield improvement,the best combination was 57% 2,4-D butyl ester(438.5 mL·ha–1) and 10% fluoroglycofen(300 mL·ha–1)(T12),which resulted in 87.99% weed control efficacy,9 875.3 kg·ha–1 oat hay yield,and 4 314.3 kg·ha–1 grain yield.

【关键词】 燕麦除草剂混配药害安全性杂草防效产量
【Key words】 oatherbicideweed control efficacymixedherbicides injurysafetyyield
【基金】 国家燕麦荞麦产业体系(CARS-7-C)
  • 【文献出处】 草业科学 ,Pratacultural Science , 编辑部邮箱 ,2019年01期
  • 【分类号】S451.221
  • 【被引频次】4
  • 【下载频次】157
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