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甘肃河西走廊为封闭型内陆区,地形南高北低,内陆河流向北部汇集,受岩层顶托,地下水位接近地表,盐分在土层上部积累,形成分散的内陆盐碱区。酒泉县集泉村,地下水矿化度3.05—5.26克/升,耕地87%为盐碱化土壤,全盐量0.279—0.639%,耕地13%为盐碱地,全盐量0.923—1.429%。灌溉水矿化度0.73克/升。盐碱地经综合治理,采取整体规划、挖排水渠,整修灌溉、竖井排灌、建水平条田、深水泡地淋盐、植树造林、种稻、种植绿肥等措施,使全村4686亩粮田平均单产由370斤上升到733斤。
Gansu Hexi Corridor is a closed inland area with low altitude in the south, high in the north and low inland. The inland rivers converge to the north. Under the rock support, the groundwater table is close to the ground surface and salt accumulates in the upper part of the soil layer, forming a scattered inland saline-alkali zone. Jiuquan County Jiuquan County, groundwater salinity 3.05-5.26 grams / liter, 87% of arable land for the salinization of soil, the whole salt 0.279-0.639%, 13% of arable land for saline soil, the full amount of salt 0.923-1.429%. Irrigation water salinity 0.73 g / l. Comprehensive treatment of saline-alkali land, to take the overall planning, dig drainage, renovation irrigation, shaft drainage and irrigation, the construction of horizontal strip fields, deep blisters leaching salt, afforestation, planting rice, planting green manures and other measures to make the village 4686 acres of grain yield average yield From 370 pounds up to 733 pounds.