摘要
为明确旱直播稻田杂草对除草剂的敏感性,分别选择5种土壤处理除草剂和5种茎叶处理除草剂在山东省临沂市河东区进行田间药效试验。结果表明,直播田土壤处理防除杂草宜选用33%二甲戊灵乳油3000 g/hm^2、38%噁草酮·丙草胺乳油1500 g/hm^2、40%苄嘧·丙草胺可湿性粉剂1500 g/hm^2、60%丁·噁乳油1500 g/hm^2,对总草的株防效分别为94.09%、92.81%、92.20%、91.88%,鲜质量防效分别为96.32%、94.66%、94.84%、95.14%;茎叶处理宜选用60 g/L五氟·氰氟草酯可分散油悬浮剂2250 g/hm^2、9%嘧肟·氰氟草微乳剂1500 g/hm^2、20%噁唑·灭草松微乳剂3300 g/hm^2,对总草的株防效分别为96.25%、95.79%、93.77%,鲜质量防效分别为97.41%、96.73%、94.96%。以上处理对杂草持效期均长达30 d。综上,采用土壤处理和茎叶处理相结合的方式,因地制宜,轮换用药,可有效控制旱直播稻田杂草。
With the purpose of determining the sensitivity of weeds to herbicides in dry direct seeding paddy fields,we conducted a field trial to evaluate the control efficacy of five herbicides for soil treatment and another five herbicides for stem and leaf treatment.The trial was carried out in Hedong District,Linyi City,Shandong Province.In the dry direct seeding paddy field,soil treatments with 33%pendimethalin EC applied at the rate of 3000 g/hm^2,38%oxadiazon·pretilachlor EC applied at 1500 g/hm^2,40%bensulfuron·pretilachlor WP applied at 1500 g/hm^2,and 60%butachlor·oxadiazon EC applied at 1500 g/hm^2 achieved the control efficacy of94.09%,92.81%,92.20%,and 91.88%respectively,which was based on the total number of all kinds of weeds in each treatment;the corresponding control efficacy based on the fresh weight of all kinds of weeds reached 96.32%,94.66%,94.84%,and 95.14%,respectively.On the other hand,the treatments of stems and leaves with 60 g/L penoxsulam·cyhalofop-butyl dispersible oil emulsion applied at 2250 g/hm^2,9%pyribenzoxim·cyhalofop-butyl ME applied at 1500 g/hm^2,20%metamifop·bentazone ME applied at3300 g/hm^2 showed the control efficacy of 96.25%,95.79%,and 93.77%,respectively,which was based on the the total number of all kinds of weeds in each treatment,while the corresponding control efficacy based on the fresh weight of all kinds of weeds was 97.41%,96.73%,and 94.96%,respectively.Moreover,the control efficacy of the above treatments lasted more than 30 days.All in all,weeds in the dry direct seeding paddy field can be effectively controlled by combining soil treatment with stem and leaf treatment;the treatments should be applied according to local conditions,and different herbicides should be used in rotation.
作者
马惠
信彩云
赵庆雷
陈博聪
张璘
林香青
MA Hui;XIN Cai-yun;ZHAO Qing-lei;CHEN Bo-cong;ZHANG Lin;LIN Xiang-qing(Shandong Rice Research Institute,Jinan 250100,China)
出处
《大麦与谷类科学》
2019年第6期38-43,共6页
Barley and Cereal Sciences
基金
国家重点研发计划（2018YFD0200209）
山东省农业科学院科技创新工程（CXGC2018E16）
关键词
水稻
旱直播
除草剂
杂草
防效
Rice
Dry direct seeding
Herbicide
Weed: Control efficacy
