旱作农田秸秆覆盖综合效应的研究

通过玉米、棉花旱作物农田秸秆覆盖试验,总结出秸秆覆盖具有明显的保墒效应,可以增加土壤的有机质和氮、磷、钾等养分含量,降低土壤的含盐量及pH值,同时改善土壤的物理性状,并减轻杂草危害和环境污染。农田覆盖秸秆后玉米、棉花的产量分别提高了7.9%和11.4%。旱作农田秸秆覆盖的综合效应十分明显。

Study on Synthetic Effect of Stalk Cover on Dry Cropland

Through the stalk cover test in corn and cotton cropland,it was summed up that stalk cover had significant effects of maintaining the soil moisture,increasing the content of organic matter,nitrogen,phosphorus,potassium and other nutrients in the soil,reducing soil salinity and pH-value,improving soil physical properties and reducing the occurrence of weeds and environmental pollution.After covering corn and cotton fields with corn stalk,the yield of corn and cotton was increased by 7.9% and 11.4% respectively.Thus the synthetic effect of stalk cover on dry cropland is very obvious.