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在沿黄区域—陕西省韩城市下峪口段共采样化验分析土样108个,测定了土样的有机质、全氮、有效磷、速效钾、有效硼和有效硅含量,采用域法识别特征值,得到韩城市下峪口段易地占补平衡项目土体养分含量基本情况。结合韩城市下峪口段地形、气候及种植特征,并充分利用区域内丰富的水土资源,将区域内滩涂地、盐碱地通过土体有机重构工程及配套建设,建成莲藕、水稻水田种植兼湿地区域的规划,制定出相应的土壤养分丰缺指标。结果表明,该区域的有机质含量基本可以满足莲藕和水稻的生长需求,但整体水平仍然不高,部分地区仍低于作物的生长需求水平;全氮、有效磷和速效钾含量低,微量元素含量分布不均。
A total of 108 soil samples were sampled and analyzed in the area along the Yellow River - Hanyukou, Hancheng, Shaanxi Province. Soil organic matter, total nitrogen, available phosphorus, available potassium, available boron and available silicon were measured. Value, get under the section of Hancheng City, Meiyukou dredge balance of soil nutrient content of the basic situation. Combined with the topography, climate and planting characteristics of the Lower Meiyukou section in Hancheng, and making full use of the abundant water and soil resources in the area, the land reclamation land and saline-alkali land in the area are built through soil organic reconstructive engineering and supporting construction, Regional planning, develop a corresponding abundance of soil nutrients indicators. The results showed that the organic matter content in this area could basically meet the growth needs of lotus root and rice, but the overall level was still not high, and the growth rate was still lower than that of crops in some areas. The contents of total nitrogen, available phosphorus and available potassium were low, and the contents of trace elements uneven distribution.