| 樊引琴,蔡焕杰.单作物系数法和双作物系数法计算作物需水量的比较研究[J].水利学报,2002,33(3):0050-0054 |
| 单作物系数法和双作物系数法计算作物需水量的比较研究 |
| Comparison of crop water requirements computed by single crop coefficient approach and dual crop coefficient approach |
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| DOI： |
| 中文关键词: 作物需水量 蒸渗仪 作物系数 |
| 英文关键词: crop water requirement,lysimeter,single,dual,crop coefficient |
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| 摘要点击次数: 4245 |
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| 中文摘要: |
| 本文采用FA0-56推荐的计算作物需水量的单作物系数和双作物系数方法，应用陕西杨凌地区的资料，分别计算了作物需水量，并和蒸渗仪的实测值进行了对比，分析了其差异及原因。结果表明，在地面部分覆盖的情况下，双作物系数法比单作物系数法更接近实测值，而在地面完全覆盖情况下，两者差别不大。 |
| 英文摘要: |
| This study is to evaluate the water requirement of crop(ET) using single coefficient approach and dual crop coefficient approach under the condition of Shannxi Province and to compare ET estimation with observation data measured by lysimeter.The differences are analyzed.The result shows that dual crop coefficient approach is better than single crop coefficient approach in case the field is partly covered.However,the difference is insignificant if the field is fully covered. |
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