| 许迪.考虑土壤水力学动态参数下的田间水平衡模拟研究[J].水利学报,1990,21(6): |
| 考虑土壤水力学动态参数下的田间水平衡模拟研究 |
| Field water balance modeling with the dynamic parameters of soil hydraulic properties taken into consideration |
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| DOI： |
| 中文关键词: 水力学动态参数，时间变异，耕作方式，田间水平衡。 |
| 英文关键词: dynamic hydraulic parameters time varying tillage practices filed water balance. |
| 基金项目: |
| 许迪 |
| 中国水利水电科学研究院水利所 瑞士联邦理工学院 |
| 摘要点击次数: 2189 |
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| 中文摘要: |
| 华北平原夏玉米长期不同水文年内，考虑土壤水力学动态参数的水动力学模型用来预测传统耕作、免耕和深松耕作方式对田间水量平衡的影响，模拟不同耕作处理下土壤入渗、地表径流、深层渗漏、土壤蓄水、作物蒸腾和土面蒸发等水平衡项间的差别。深松耕作明显修改了耕层土壤水力学性能，建立在动态参数上的模拟结果与传统耕作相比具有显著差别。由于耕区土壤水力学参数的变化对免耕法并不敏感，故模拟的水平衡项与传统耕作下的相应值间基本无差异。 |
| 英文摘要: |
| A simulation model with time varying soil hydraulic parameters is use to predict the effects of conventional tillage(CT),no tillage(NT) and subsoiling tillage(ST) practices on the components of field water balance during the summer maize growth season for different hydrologic years in North China。The differences in potential for filtration, deep percolation, water storage, transpiration and evaporation of these tillage practices are to be modeled. The results show that ST changes the hydraulic behavior of the soil significantly and the simulation based on dynamic parameters is remarkably differed from that of CT. |
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