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中国油料作物学报 ›› 2019, Vol. 41 ›› Issue (1): 120-.doi: 10.7505/j.issn.1007-9084.2019.01.016

• 土肥植保 • 上一篇    下一篇

20%氨氯·二氯·烯草酮可分散油悬浮剂防除油菜田杂草的效果

朱文达(1938-),男,江苏南通人,研究员,主要从事杂草的综合防除技术研究。E-mail:zhwda@163.com #br# #br#   

  1. 1.湖北省农业科学院,湖北武汉,430064;
    2.中国农业科学院植物保护研究所,北京,100193
  • 出版日期:2019-02-28 发布日期:2019-04-30
  • 通讯作者: 余锦平,副研究员,E-mail:nkyyujinping@163.com
  • 基金资助:
    农业部财政项目(2130108)

Effect of 20% picloram ? clopyralid ? clethodim OD on weed control in rape field #br#

  1. 1. Hubei Academy of Agricultural Science, Wuhan 430064, China;
    2. Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100094, China
  • Online:2019-02-28 Published:2019-04-30

摘要:

     为明确新型吡啶类和环己烯酮类除草剂复配制剂对油菜田杂草的防控效果,指导新型除草剂在油菜田的合理使用,通过田间试验研究了20%氨氯吡啶酸?二氯吡啶酸?烯草酮可分散油悬浮剂对油菜田主要杂草的防除效果,以及杂草防除后对田间光照和杂草氮、磷、钾及水分累积的影响。试验结果表明,施用20%氨氯吡啶酸?二氯吡啶酸?烯草酮可分散油悬浮剂防除油菜田杂草效果显著,对菵草、大巢菜、看麦娘、牛繁缕等单双子叶杂草均有良好防效,总草鲜重防效可达88.7%~98.0%,显著优于两种对照药剂。杂草防除后,显著降低了杂草对田间氮、磷、钾和水分的消耗,有效地改善了田间光照和水肥条件。20%氨氯吡啶酸?二氯吡啶酸?烯草酮可分散油悬浮剂处理的油菜产量达到2 626.26~2 836.26 kg/hm2,增产效果显著,产量较空白对照增加18.2%~27.9%,增收2 173.5~3 307.5元/hm2。研究结果表明,20%氨氯吡啶酸?二氯吡啶酸?烯草酮可分散油悬浮剂在油菜田有良好的应用前景,推荐剂量为每公顷使用有效成分225~300g。

关键词: 氨氯吡啶酸·, 二氯吡啶酸·, 烯草酮;杂草防效;光照;养分;油菜产量

Abstract:

     To evaluate the efficiency of 20% picloram ? clopyralid ? clethodim OD, a novel pyridine and cyclohexenone herbicide, and to provide guidance for rational use in rapeseed field, its weed control effect, rapeseed yield, light intensity, the content of N-P-K and water were analyzed after weed control by picloram ? clopyralid ? clethodim. The experiment results indicated that the effect of weed control was remarkable by 20% picloram ? clopyralid ? clethodim OD. Beckmannia syzigachne,Vicia sativa, Alopecurus aequalis and Malachium aquaticum were all effectively controlled with reduction of total grass fresh weight ranged from 88.7 to 98.0%, which greatly improved the light intensity, water and fertilizer effectivity for rapeseed in field, and contributed to increase of rapeseed yield of 18.2~27.9% , income increase of 1086.8~1653.8 Yuan/hm2 compared to untreated control. It concluded that 20% picloram ? clopyralid ? clethodim OD was a promising herbicide in rape field, and the recommended dose was 225 ~ 300 g/hm2.

Key words:  rapeseed field, picloram ? clopyralid ? clethodim OD, weed control effect, light intensity, nutrient content, rapeseed yield