冬小麦污水灌溉条件下土壤中氮素转化试验研究  

Field Experimental Study of Nitrogen Transport in Sewage Irrigation during the Growth of Winter Wheat

作　　者：王丽影[1] 杨金忠[1] 黄凯[1] 杨丽[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072

出　　处：《灌溉排水学报》2006年第6期1-4,14,共5页Journal of Irrigation and Drainage

基　　金：国家自然科学基金资助项目(50279039);国家自然科学基金资助项目(50239090)

摘　　要：取生活污水进行冬小麦污水灌溉实验。在田间4个2m×2m×2．5m蒸渗仪进行观测。结果表明，短期污水灌溉不会显著影响土壤剖面全氮的含量和分布，但会使氨态氮的含量下降。一季污水灌溉使土壤0～50cm土层中的硝态氮浓度降低，而使其在50-100cm土层中增加。污水灌溉基本不会影响小麦干物质的产量。The saturated irrigation tests were carried out in four lysimeters built in the field. The results obtained are summarized as follows： The distribution and quantity of total nitrogen in soil profile will not change much by short-term sewage irrigation, but the concentration of ammonium will decrease in large scale during the treatment. The concentration of nitrate will decrease in 0~ 50 cm depths, and increase rapidly in 50~100 cm depths. Compare with tap water irrigation treatment, sewage irrigation treatment has no influence on the yield of dry materials, but it will increase the nitrogen concentration in the dry materials in the early days.

关 键 词：污水灌溉 氮平衡 土壤 冬小麦 

分 类 号：S512.1[农业科学—作物学]