石嘴山市郊区上营子大队,地势平坦低洼,坡度为三千分之一,南高北低。灌水期地下水平均埋深0.5米左右。土壤盐碱重,井排前耕作土壤含盐量0.2％左右,生荒地0.8～1.59％。春灌后地下水位最高期与强烈蒸发期5、6、7三个月一致,冬灌后的水位最高期与冬春季大风一致,因而促使潜水蒸发,大量盐份累积地表,导致土壤盐渍化。地表为淤积粘壤土,20～40米间为黑色 Shizuishan suburb on the camp sub-brigade, flat low-lying, slope of one in 3000, South High North low. Groundwater irrigation during the average depth of about 0.5 meters. Soil salinity and heavy, row well before farming soil salt content of about 0.2%, habitat 0.8 ~ 1.59%. After spring irrigation, the highest groundwater level is consistent with the intense evaporation period of 5,6,7 for three months. The highest water level after winter irrigation is in line with the strong winds in winter and spring, thus contributing to the evaporation of the submersion and accumulation of salt in large quantities, which leads to soil salinization. Surface silt clay loam, 20 to 40 meters between the black