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鲁北平原包括山东省聊城、德州、惠民三个专区,总面积约3.9万平方公里.本区土壤盐渍化的威胁甚大,这是由下列内在因素和客观环境决定的:(1)土壤母质为近代河流沉积物,含有较多的可溶性盐类;(2)土壤质地以砂壤质为主,毛细管内水、盐运行迅速;(3)蒸发强烈,降雨较少且分配不均,以致旱、涝交错;(4)地下水位较高且地下径流微弱,地下水主要靠蒸发来达到均衡.由此种种,使得本地区盐渍化土壤有着相当广泛的分布,但是除滨海盐土区外,大多是呈斑块状零星散布于耕地中.
The Lubei Plain includes three prefectures of Liaocheng, Dezhou and Huimin in Shandong Province, with a total area of about 39,000 km2. The threat of soil salinization in this area is very high, which is determined by the following intrinsic factors and the objective environment: (1) Soil The parent material is modern river sediment, which contains more soluble salts. (2) Soil texture is dominated by sandy loam, and the water and salt in the capillary tube run rapidly. (3) Strong evaporation, less rainfall and uneven distribution result in Drought and waterlogging staggered; (4) high groundwater level and low groundwater runoff, groundwater mainly by evaporation to achieve an equilibrium, which makes the region has a very wide distribution of salinized soils, except the coastal saline soil area, most Is a patchwork scattered in the arable land.