HUANG Chun-yan,CHEN Tie-bao,WANG Yu,et al.Influence of Soil Temperature and Rainfall on Effect and Injury of Acetochlor[J].HEILONGJIANG AGRICULTURAL SCIENCES,2004,(01):13-15.[doi:10.11942/j.issn1002-2767.2004.01.0013]
土壤温度和降水量对乙草胺药效及药害的影响
- Title:
- Influence of Soil Temperature and Rainfall on Effect and Injury of Acetochlor
- 文章编号:
- 1002 -2767(2004)01 -0013 -03
- Keywords:
- soil temperature ; rainfall ; acetochlor ; effect ; injury
- 分类号:
- S482 .4
- 文献标志码:
- A
- 摘要:
- 田间小区试验结果表明, 土壤温度对乙草胺药效和药害影响没有明显规律, 降水量及除草剂用量对乙草胺的药效和药害均有一定的影响。乙草胺的药效和药害并不是随着土壤温度的升高呈现逐步增高的趋势, 而是随着乙草胺用药量的增加及施药前降水量的增高而提高。如果施药前7d没有降水会显著降低乙草胺的除草效果和对大豆的药害程度。乙草胺药害可使大豆苗期株高、鲜重和叶片数有所降低, 成株期株荚数、株粒数减少, 导致大豆减产0 %～ 50 .6 %。药害严重时可使大豆晚熟。
- Abstract:
- The plot experiment results show ed that rainfall and herbicide dosage are facto rs w hich influence obviously the ef fect and injury of acetochlo r .The ef fect and injury of acetochlo r w eren’ t inf luencedobviously by soil temperature .The cont rol ef fect and injury of acetochlor increased w ith acetochlordosage raising and rainfall increasing before 7d using acetochlor .Soybean g row th w as inhibitedlightly , the plant height , f resh weight , leaves , pods and grains w ere reduced and the rate of yield lossw as 0 %～ 50 .6 % due to the injury of acetochlor .Ripeming date could be delayed w hen the injury wasserious
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备注/Memo
收稿日期:2003 -06 -10