The discrete method is used to simulate emissivity of one dimension of rough surface with row structure.Compared to the emissivity measured by ground radiometer

the bias between measured and simulated emissivity is less than 0.01

and this confirms that the discrete method is feasibility to simulate emissivity of rough surface with row structure.At a given row structure

the difference of emissivity between row structure and flat smooth surface changes with observed azimuth angle

and the value falls in the range of 0.02 and 0.05.This indicates that emissivity of row structure surface is anisotropic

and it should be considered in the process of modeling microwave radiation of row structure surface.In addition

the error of soil moisture inversion caused by neglecting the existence of row structure is analyzed across different soil moisture

and results show that the absolute error of soil moisture is between 0 cm 3 /cm 3 and 0.1 cm 3 /cm 3 when soil moisture changes from 0.02 cm 3 /cm 3 to 0.5 cm 3 /cm 3.This error is greater than the error tolerance limit of soil moisture inversion.Therefore

in the process of farmland parameter inversion from passive microwave remote sensing

surface row structure effect cannot be ignored.