Soil water movement is studied by building mathematical model and by the finite element analysis under two-dimensional rainfall infiltration and evaporation for the machine-building terrace in this thesis.

Study on the effect of fertilizing on newly-built terrace in dryland area of mid-Gansu

The effect of auxiliary irrigation on yield of maize in terraced field;

We take the sector of Helong,Jinghe River,northern Luohe River and the Weihe drainage area as an example,and analyze the effect of preventing and controlling of soil erosion by afforestation,planting of grass,the terraced field and dam of silt.