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Position: Home > Articles > Water and NO_3~--N distribution characteristics in single film hole point source fertile solution infiltration Transactions of the Chinese Society of Agricultural Engineering 2006,22 (10) 12-15

单膜孔点源肥液入渗水氮分布特性试验研究

作  者:
费良军;程东娟;朱兴华
单  位:
西安理工大学水资源研究所
关键词:
肥液;单膜孔点源入渗;水氮分布;数学模型
摘  要:
该文通过室内试验,研究了膜孔灌肥液单点源自由入渗湿润体内水分和NO3--N浓度的分布特性,提出了膜孔肥液自由入渗湿润体内水分和NO3--N浓度分布的数学模型。研究结果表明:水分和NO3--N浓度分布模型计算精度较高,并符合点源湿润体内土壤含水率和NO3--N的分布规律;根据湿润体内水分和NO3--N浓度分布模型,推求得到了湿润体中土壤含水率、NO3--N浓度和湿润半径三者之间的关系。以上成果为进一步研究膜孔肥液入渗的影响因素和灌水技术提供了理论基础。
译  名:
Water and NO_3~--N distribution characteristics in single film hole point source fertile solution infiltration
作  者:
Fei Liangjun,Cheng Dongjuan,Zhu Xinghua(Institute of Water Resources Research,Xi'an University of Technology,Xi'an 710048,China)
关键词:
fertile solution;single film hole point source infiltration; distribution of water and NO_3~--N;mathematic model
摘  要:
Based on the indoor experiment of single film hole point source fertile solution infiltration,the distribution characteristics of water content and NO_3~--N concentration in wetted-body were researched.The mathematic models of water content and NO_3~--N concentration distribution were put forward.Results show that the accuracy of these models is high and the models are consistent with the law of the water content and NO_3~--N concentration distribution.According to water content and NO_3~--N concentration distribution models,the relationships among water content,the concentration of NO_3~--N and radius of wettedbody are ascertained.These researches have laid a foundation for further study of the influence factors in film hole fertile solution infiltration.

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