基于环境容量的再生水安全灌溉制度研究

天津农业节水研究中心的农田水循环试验基地开展了3年的再生水灌溉试验，灌溉水源采用再生水、清水、清水一再生水混灌3种处理，种植作物为首着和棉花。试验获得了在地面灌溉条件下土壤中稍态氮沿剖面分布及随时间变化的数据，模拟了稍态氮溶质运移转化情况。建立了以土壤稍态氮环境容量为控制条件的再生水灌溉制度和清水一再生水混灌和轮灌灌溉制度。

Study on environmental capacity based reclaimed water irrigation system

A reclaimed water irrigation experiment is carried out in the Farmland Water Cycle Experimental Base of Tianjin Agricultural Water Saving Research Center for three years.During the experiment,three kinds of waters are used for the irrigation;i.e.the reclaimed water,the clear water,the water mixed with both the clear and the reclaimed and cotton and clover are taken as the study crops for the irrigation experiment.From the experiment,the distribution of the soil nitrate nitrogen along the soil profile and it...