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对宁夏灵武市7个‘灵武长枣’种植基地土壤进行取样,测定分析土壤N、P、K、有机质含量等指标,比较其土壤养分状况。结果表明:7个基地土壤pH值在7.86~8.54之间,为微碱性土壤;全盐含量在0.13~1.04 g/kg,属于非盐渍化土壤;土壤有机质含量0.15%~1.47%,全氮、碱解氮含量分别为0.28~1.01 g/kg、24.99~88.60 mg/kg,速效磷含量1.33~32.93 mg/kg,速效钾含量在73.33~190.00 mg/kg。7个‘灵武长枣’种植基地的土壤养分差异较大,其中灵武市大泉林场、临河镇种植基地土壤肥力较好,绿源恒、银湖公司、郝家桥镇种植基地土壤肥力较差。‘灵武长枣’种植基地在土肥管理中,应多施用有机质和氮肥,适时补充磷肥,减少钾肥的施用量。
Soil samples from 7 Lingwu long jujube growing bases in Lingwu city, Ningxia were sampled and their N, P, K and organic matter contents were determined and analyzed. The soil nutrient status was compared. The results showed that the soil pH value of the seven bases was between 7.86 and 8.54, which was slightly alkaline soil. The total salt content was 0.13-1.04 g / kg, belonging to the non-salinization soil. The content of soil organic matter was 0.15% -1.47% Nitrogen content and alkaline hydrolysis nitrogen content were 0.28-1.01 g / kg, 24.99-88.60 mg / kg, available phosphorus content 1.33-32.93 mg / kg and available potassium content 73.33-190.00 mg / kg, respectively. The soil nutrients of seven Lingwuzaozao planting bases differed greatly. Among them, the soil fertility of the planting base of Daquan Forest Farm and Linhe Town in Lingwu City was good, and that of Luyuan County, Yinhu Company and Haojiaqiao Town was poor. ’Lingwu long jujube’ planting base in soil and fertilizer management, should be applied more organic matter and nitrogen fertilizer, timely phosphate fertilizer to reduce the amount of potassium fertilizer.