| This paper analyzed effect of mulching on the growth of winter wheat and the soil water dynamics with plastic film,straw mulching and black liquid film.The results indicated that the significant effect of the plastic film on yield factors in these film,increased 8.32%.Plastic film and liquid film could increase temperature and soil moisture in returning green stage,0～20 cm soil water content increased 4.4% and 3.0% respectively.Straw mulching increase soil moisture in key growth stage,0～100 cm soil water storage increased 15.2 mm and 9.8 mm in returning green stage and heading stage,as the inhabited for winter wheat by low temperature efficiency in early stage,but shows better in late stage.Different mulching could increase the water use efficiency.The best choice is straw mulching,which is good for soil fertilizer and soil sustainable use. |