【作者】 蒋静； 冯绍元； 霍再林； 王永胜； 贾斌；

【Author】 Jiang Jing,Feng Shaoyuan,Huo Zailin,Wang Yongsheng,Jia Bin (Centre for Agricultural Water Research in China,China Agricultural University,Beijing 100083,China)

【机构】 中国农业大学中国农业水问题研究中心；

【摘要】 通过春玉米节水灌溉试验,研究了不同灌溉条件对土壤水分、盐分、温度分布的影响。结果表明:土壤含水量随深度的增加而增大,非充分灌溉下深层土壤水分能够得到更充分利用,相同水质下重度缺水处理的土壤含水量显著低于充分灌溉和中度缺水处理,相同灌溉水量下微咸水处理的土壤含水量略高于淡水处理。灌溉对土壤溶液电导率的影响随灌水量的减少而减弱,各处理灌溉后表层电导率增大,重度缺水下各土层深度的土壤溶液电导率均显著低于充分灌溉和中度缺水处理。相同灌溉水量下微咸水处理的土壤温度略高于淡水处理,灌溉水量对土壤温度没有显著影响。更多还原

【Abstract】 Field experiments were conducted to study soil water,salt and temperature distribution under different irrigation regime.The results demonstrated that soil water content increased with soil depth.Deep soil moisture can be used sufficiently under deficit irrigation.At the same water quality,soil water content of severe water deficit treatment was significant lower than that of sufficient and moderate water deficit treatment.At the same water quantity,soil water content of saline treatment was higher than fresh water treatment.The effect of irrigation on electric conductivity of soil solution reduced with decreasing irrigation quantity.The electric conductivity of surface soil layer of all treatment increased significantly after irrigation.That of severe water deficit treatment was significant lower than that of sufficient and moderate water deficit treatment.Soil temperature of saline treatment was higher than fresh water treatment. There was unobvious effect of irrigation quantity on soil temperature.更多还原