| 李益农,许迪,李福祥.田面平整精度对畦灌性能和作物产量影响的试验研究[J].水利学报,2000,31(12):0082-0088 |
| 田面平整精度对畦灌性能和作物产量影响的试验研究 |
| Study on influences of field leveling precision on border irrigation quality and crop yield |
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| DOI： |
| 中文关键词: 平整精度 作物产量 灌溉效率 灌水均匀度 用水效率 |
| 英文关键词: leveling precision crop yield application efficiency distribution uniformity water use efficiency |
| 基金项目: |
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| 摘要点击次数: 3068 |
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| 中文摘要: |
| 采用田面平整精度Sd作为定量指标评价土地平整程度，根据不同田面平整精度处理得到的作物畦灌试验资料，确定畦田平整精度对灌溉效率、灌水均匀度、用水效率和作物产量的影响。结果表明畦灌系统性能和作物产量随田面平整状况的改善而明显提高。为达到改进畦田灌水质量、节水增产的目的，Sd值以不大于2cm最佳，为此需采用激光控制下的土地精细平整技术实现这个地面平整标准。 |
| 英文摘要: |
| The standard deviation of the surface elevation is used to evaluate the precision of the land leveling after the combined application of conventional and Laser-controlled land leveling technology. Field investigation has been carried out to assess quantitatively the effect of land leveling quality on application efficiency, distribution uniformity, water-use efficiency and crop yield. The result shows that irrigation application, distribution, water-use efficiency and wheat grain yield are appreciably reduced with increase in standard deviation. It can be inferred that to obtain reasonable high yield and judicious use of water the field leveling precision should not greater than 2cm. For this reason the Laser-controlled land leveling technology should be used in an effort to achieve the leveling precision needed. |
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