Abstract: A 2-year located field plot experiment was conducted to study the influences of different tillage methods and crop residues incorporation on the yield of spring maize and physical and chemical properties of soil.The results showed that no matter under what kind of way of crop residues incorporation, the yield of maize with crop residues incorporation was higher than that of without.It was best to improve the physical properties of soil, the contents of soil nutrient and organic matter under crop residues incorporation every year, the increasing rang of maize yield was highest of all.The physical and chemical properties of soil under crop residues incorporation with urea and crop residues incorporation once every two years were not better than that of without crop residues incorporation.Compared with the tillage method of normal plowing, it can decrease the soil bulk density remarkable in deep soil layer, increase soil porosity, field capacity, soil organic matter content, N, P and K content in the soil, the yield of spring maize under the tillage methods of subsoiling and subsoiling with mixing the soil in different layer.Subsoiling with mixing the soil in different layer can get more good effects on improving soil physical and chemical properties and maize yield than subsoiling in addition, the effects would be best with crop residues incorporation every year.

Key words: Tillage methods, Subsoiling, Subsoiling with mixing the soil in different layer, Crop residues incorporation, Yield, Physical and chemical properties of soil

CLC Number: 

• S344

• S153.01