| 作物根区局部控水无压灌溉的土壤水动力学机理 |
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| 引用本文： | 陈新明,蔡焕杰,单志杰,赵伟霞.作物根区局部控水无压灌溉的土壤水动力学机理[J].农业机械学报,2006,37(11):80-83. |
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| 作者姓名： | 陈新明 蔡焕杰 单志杰 赵伟霞 |
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| 作者单位： | 西北农林科技大学水利与建筑工程学院,712100,陕西省杨凌 |
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| 基金项目： | 国家自然科学基金;国家农业科技成果转化基金 |
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| 摘 要： | 土壤吸力是土壤中水分运动的驱动力。依据土壤水动力学原理提出的根区局部控水无压地下灌溉技术是利用土壤毛管吸力或基质吸力作用,使水分通过输水毛管上的出水孔口进入作物根系层,以满足作物需水,灌溉时不需外加压力。试验表明这种灌水方法是可行的,无压灌溉系统不需任何动力设备为其提供压力,节约了能源。
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| 关 键 词： | 土壤吸力 无压灌溉 湿润体 入渗率 |
| 修稿时间： | 2005年7月8日 |
Experiment Using Soil Water Dynamics for Non-pressure Subsurface Irrigation in Crop Root |
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| Chen Xinming,Cai Huanjie,Shan Zhijie,Zhao Weixia.Experiment Using Soil Water Dynamics for Non-pressure Subsurface Irrigation in Crop Root[J].Transactions of the Chinese Society of Agricultural Machinery,2006,37(11):80-83. |
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| Authors: | Chen Xinming Cai Huanjie Shan Zhijie Zhao Weixia |
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| Institution: | Northwest A & F University |
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| Abstract: | The soil suction can be used as driving force for water movement in soil profile. Based on soil water dynamics a new irrigation technology of non-pressure subsurface irrigation (NSDI), which works under soil capillary suction or matrix suction was put forward. The new irrigation technology is designed that soil suction and crop evaporation can cause water entering crop roots from pipe aperture. Irrigation needs no power, and it can save cost and energy sources. The results indicate the feasibility of the method. |
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| Keywords: | Soil suction force Non-pressure irrigation Wetted body Infiltration rate |
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