Taipusi County

Inner Mongolia

was selected as the study area. During the period of crop growth

eight tillage modes were disposed in the field

including no-till

subsoil tillage

conventional tillage

plowing with stalk mulch

surface tillage

ridge tillage A

ridge tillage B

and ridge tillage C. In the period of fallow farmland

five tillage modes were disposed including comparing stalk returning farmland and plowing

subsoil tillage

conventional tillage

low stubble of wheat and high stubble of wheat. During the growth period of rape

soil moisture from 0 to 70 cm depth of ridge tillage is the highest in the eight tillage modes

that of no-till and surface tillage are the lowest

and that of plowing with stalk mulch

subsoil tillage and conventional tillage was moderate. After harvesting of crop

content of soil moisture of high stubble of wheat is highest from 0 to 30 cm

those of subsoil tillage and conventional tillage are placed in the middle

and those of stalk returning farmland and plowing and low stubble of wheat are lowest.