Irrigation and drainage development of sandy deserts in China

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This research is composed of the following three subjects of study. (1) Water resources utilization for development of sandy deserts: in the experimental field at Shapotou Desert Experiment and Research Station, evapotranspiration from soybeans was estimated by the water balance method and the heat balance method under the condition of drip irrigation, and a possibility of agricultural utilization of treated wastewater from a rural settlement was discussed by the experiment of soybeans culture.2) Soil management for cultivation of sandy deserts: the physical and chemical properties of soil at Shapotou Station and at Naiman Desertification Rehabilitation Experiment and Research Station were investigated. The salt accumulation of sandy field by the surface irrigation of the yellow river water was not recognized. 3) Prevention of desertification for soil conservation of sandy deserts: In order to investigate desertification of the Horgin Sandy Land, the vegetation environment near the Naiman Station was monitored by utilization of remote sensing. The counterplan of prevention of desertification was discussed and the trend of desertification was forecasted by the analysis of the remote sensing data.