不同覆盖条件下春玉米田耗水特征及提高水分利用率研究

With conventional cultivation model as comparison, water consumption characteristics of spring maize under different mulching pattern was studied. The study results show that water consumption law of various kinds of mulching pattern was according with that without mulching. The straw mulching and plastic film mulching，on some degree，all can reduce the water evaporation from soil surface and reduce the total water consumption，too，but it was not obvious. The straw mulching and plastic film mulching with seeding in furrow can improve water use efficiency，in this sense，mulching was water-saving. The plastic film mulching with seeding in ridge although can maintain soil water，but the soil water supplying of ridge was so shortage that the yield forming was influenced，so it is not adapt to the local condition.