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2007—2009年在隆德县13个乡镇采集土样3 950个,并对样品进行了测试、分析。结果表明,隆德县土壤养分现状为:有机质、全氮、碱解氮和速效钾含量高于宁夏平均含量,其含量分别为15.77 g/kg、1.03 g/kg、74.39 mg/kg和176.60mg/kg;有效磷含量22.29 mg/kg,低于全区平均含量。自1984年第二次土壤普查以来,土壤养分变化趋势为:有机质变化不明显,全氮、有效磷和速效钾含量呈增加趋势,碱解氮呈下降趋势;耕地土壤养分总体评价为土壤有机质、全氮、碱解氮、有效磷总体属于一般,速效钾总体属于高。
In 2007-2009, 3 950 soil samples were collected from 13 townships in Lund County, and the samples were tested and analyzed. The results showed that the content of soil organic matter, total nitrogen, available nitrogen and available potassium in Lude County were higher than that in Ningxia with the contents of 15.77 g / kg, 1.03 g / kg, 74.39 mg / kg and 176.60 mg / kg; available phosphorus content 22.29 mg / kg, lower than the average content of the region. Since the second soil census in 1984, the change trend of soil nutrients was as follows: the change of organic matter was not obvious, the content of total nitrogen, available phosphorus and available potassium increased, while the content of soluble nitrogen decreased; soil nutrients were evaluated as soil organic matter, Total nitrogen, alkaline hydrolysis of nitrogen, phosphorus is generally an effective general, total available potassium is high.