月份	不同深度土壤消退系数												垂线平均
	10 cm			20 cm			50 cm			80 cm
	上旬	中旬	下旬	上旬	中旬	下旬	上旬	中旬	下旬	上旬	中旬	下旬
3	0.983	0.982	0.975	0.988	0.984	0.980	0.993	0.989	0.985	0.998	0.994	0.990	0.987
4	0.968	0.961	0.959	0.976	0.971	0.969	0.981	0.977	0.976	0.986	0.983	0.982	0.974
5	0.957	0.955	0.957	0.967	0.964	0.965	0.975	0.975	0.974	0.980	0.979	0.979	0.969
6	0.959	0.960	0.960	0.967	0.968	0.967	0.973	0.972	0.972	0.979	0.979	0.978	0.970
7	0.959	0.959	0.961	0.966	0.965	0.967	0.973	0.973	0.973	0.977	0.977	0.977	0.969
8	0.963	0.966	0.968	0.968	0.969	0.972	0.974	0.974	0.976	0.978	0.979	0.980	0.972
9	0.970	0.972	0.973	0.974	0.977	0.977	0.977	0.980	0.981	0.982	0.983	0.984	0.978
10	0.974	0.975	0.979	0.978	0.978	0.982	0.982	0.982	0.985	0.985	0.985	0.987	0.981
11	0.983	0.987	0.990	0.985	0.989	0.993	0.988	0.990	0.993	0.989	0.991	0.993	0.989