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为了实现黄河淤区土地的合理有效使用,采用抽样调查方法对河南黄河南岸郑州至兰考段的放淤区进行了土地适宜性分析。结果表明:淤区土壤养分供应能力极差,并且土壤质地偏砂,土体构型不良,黏粒及有机质含量很低,其中,10个样点有机质含量为2.06～6.96g/kg,土壤速效氮含量为13.97～27.94mg/kg,也处于极低水平,使得农业生产力低、土壤保水保肥性差,而且容易引起周边地下和地表水体富营养化。该区土地适宜发展林业,可防止水土流失、土壤退化和地下水污染,而且能更好地发挥其生态系统服务功能。
In order to realize the rational and effective use of the silt land in the Yellow River, the land suitability analysis was carried out by using the sample survey method in the wilting area of Zhengzhou-Lanzhou section on the south bank of the Yellow River in Henan Province. The results showed that the nutrient supply capacity of soil in the siltation area was very poor, and the soil texture was sanding, the soil configuration was poor, and the content of clay and organic matter was very low. The content of organic matter in the 10 samples was 2.06 ~ 6.96g / kg, Nitrogen content of 13.97 ~ 27.94mg / kg, is also at a very low level, making agricultural productivity, soil water and fertilizer poor, and easily lead to the surrounding underground and surface water eutrophication. The area is suitable for the development of forestry, soil erosion, soil erosion and groundwater pollution prevention, but also to better play its ecosystem services.