The affect factors of the radiation in balance soil surface 1. Solar radiation capacity 2. Albedo in soil surface 3 Available radiation in soil surface (1) Cloud, fog water vapor and wind etc (2) Elevation and inclination of angle of surface toward the sun (3)Soil surface roughness (4) Mulches of soil surface（二） The affect factors of the radiation in balance soil surface 1、Solar radiation capacity 2、Albedo in soil surface 3、Available radiation in soil surface （1）Cloud, fog、water vapor and wind etc. (2) Elevation and inclination of angle of surface toward the sun (3) Soil surface roughness (4) Mulches of soil surface