保护性耕作条件下播后苗前除草剂防除玉米田杂草试验
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S451.22+2

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国家“粮食丰产科技工程”资助项目,合同编号:2004BA520A09-5-4


Experiments on Control Effects of Pre-emergence Spraying of Herbicides on Maize of Conservation Tillage
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    摘要:

    田间试验结果表明,保护性耕作条件下,除草剂在玉米播后苗前施用,38%莠去津乳油5.25kg/hm2、90%乙草胺乳油2.1kg/hm2、72%异丙草胺乳油2.25kg/hm2、72%2,4D-丁酯1.05kg/hm2,药后45d的总株防效分别为81.40%、80.69%、79.23%和50.47%。而50%滴丁.乙乳油4.2kg/hm2、40%乙.莠悬乳剂5.7kg/hm2、50%滴丁.莠悬浮剂4.2kg/hm2和42%滴丁.异丙草.莠悬乳剂5.7kg/hm2对单、双子叶杂草除草效果均有增效作用,药后45d株防效分别为84.94%、86.33%、89.53%和85.47%。药后混土2~3cm,可提高防治效果,38%莠去津乳油5.25kg/hm2、90%乙草胺乳油2.1kg/hm2、72%异丙草胺乳油2.25kg/hm2、72%2,4D-丁酯1.05kg/hm2、50%滴丁.乙乳油4.2kg/hm2、40%乙.莠悬乳剂5.7kg/hm2、50%滴丁.莠悬浮剂4.2kg/hm2和42%滴丁.异丙草.莠悬乳剂5.7kg/hm2,药后45d的总株防效分别为87.42%、85.61%、84.02%、52.41%、92.74%、91.30%、91.92%和89.42%。

    Abstract:

    Experiments on control effects of pre-emergence herbicides on maize of conservation tillage were carried out in field.The results showed that the quantity control effects of weeds of 38% atrazine 150 ml/667m2,90% acetochlor 140 ml/667m2,72% propisochlor 150ml/667m2,2,4-D-butyl 70 ml/667m2 45 days after spraying were 81.40%,80.69%,79.23% and 50.47% respectively;But 50% 2,4-D-butyl+acetochlor,40% acetochlor+atrazine,50%2,4-D-butyl+atrazine and 42%2,4-D-butyl+propisochlor+atrazine have improved the control effects and the quantity control effects of weed 45 days after spraying were 84.94%,86.33%,89.53% and 85.47% respectively.It could improve the control effect if soil of 2-3cm was mixed up.The quantity control effects of weeds of 38% atrazine 150 ml/667m2,90% acetochlor 140 ml/667m2,72% propisochlor 150 ml/667m2,72% 2,4-D-butyl 70 ml/667m2,50% 2,4-D-butyl+acetochlor,40% acetochlor+atrazine,50% 2,4-D-butyl+atrazine and 42%2,4-D-butyl+propisochlor+atrazine were 87.42%,85.61%,84.02%,52.41%,92.74%,91.30%,91.92% and 89.42%.

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沙洪林,纪明山,刘宇眉.保护性耕作条件下播后苗前除草剂防除玉米田杂草试验[J].东北农业科学,2007,32(2):36-39.

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  • 收稿日期:2006-11-22
  • 最后修改日期:2007-02-06
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  • 在线发布日期: 2025-03-11
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