黄河淤区土壤质量及土地适宜性分析

Analysis of Soil Quality and Adaptability of Huanghe Silt Land

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。

To efficiently utilize the Huanghe silt land,the soil quality and adaptability of Huanghe silt land on the south bank from Zhengzhou to Kaifeng were analyzed.The results showed that the agricultural productivity was very low,the capacity of retaining water and fertilizer was poor,and it could easily cause eutrophication of surface and underground water because of the poor nutrient supplying capacity of the silt soil,the sandy soil texture,the undesirable soil body configuration,and lack of clay and organic matter.Forestry is suitable for the region,which can prevent soil erosion,soil degradation and pollution of underground water.Furthermore,it can better perform the function of ecosystem service.