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Thermal Science - Online First

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Study on the thermodynamic function of farmland under drip irrigation

As drip irrigation is more and more beneficial to saving water resources, it has become a more popular way to irrigate farmland, so the research of drip irrigation farmland has been paid more attention to. Based on the dynamic simulation of farmland under drip irrigation and the analysis of control variables, the relationship among thermodynamic functions such as temperature, water content and soil water potential are studied by different methods in this paper and the corresponding conclusions are obtained. Under the condition of constant control temperature, the water conductivity of soil in farmland will decrease with the increase of soil water potential, that is, the conductivity of soil is inversely proportional to the water potential of soil. In the process of actual drip irrigation, it is impossible to control soil parameters such as temperature or water content and soil water potential separately. So the test in this paper is relatively ideal, but still has reference significance.
PAPER REVISED: 2019-01-30
PAPER ACCEPTED: 2019-02-10
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