Fei Liangjun
Publications 15
#2Fei LiangjunH-Index: 2
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#1Nie WeiboH-Index: 2
#2Fei LiangjunH-Index: 2
Last.Ma XiaoyiH-Index: 3
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Based on the volume balance (VB) equation, the surface water profile was shown to be a power function and Philip equation equal to the Kostiakov–Lewis equation when the infiltration parameter a = 0.5. With this assumption, an equation was proposed for estimating infiltration parameters together with Manning roughness. The method requires only multi-point water advance data of border irrigation. Solving the equation requires use of the nonlinear least-squares fitting technique by Matlab software....
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Based on the indoor experiments,the influences of soil bulk density on distribution and uniformity of soil moisture,NO3--N and NH4+-N under film hole irrigation with fertilizer liquid free infiltration were studied.The results showed that soil moisture and NH4+-N decreased around the film hole;NO3--N first increased and then decreased around the film hole;the lager the soil bulk density was,the smaller the distribution distance of soil moisture,NO3--N and NH4+-N in horizontal and vertical direct...
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