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中国农学通报

中国农学通报 ›› 2018, Vol. 34 ›› Issue (27): 130-136.doi: 10.11924/j.issn.1000-6850.casb17100026

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

延安新区(北区)道路绿地土壤肥力质量评价

赵满兴,曹阳阳,焦佳斌,白二磊,赵振祥,李玉山   

  1. 延安大学 生命科学学院,延安大学 生命科学学院,延安大学 生命科学学院,延安大学 生命科学学院,延安大学 生命科学学院,延安大学 生命科学学院
  • 收稿日期:2017-10-11 修回日期:2017-11-21 接受日期:2017-12-22 出版日期:2018-09-19 发布日期:2018-09-19
  • 通讯作者: 赵满兴
  • 基金资助:
    国家自然科学基金项目“可溶性有机氮在陕北黄土高原植被恢复中氮素转化中的作用”(41761068)；陕西省高水平大学建设专项资金资助 项目“生态学”(2012SXTS03)；延安大学引导项目“延

Soil Fertility Evaluation for Urban Greenbelt in the New District of Yan ’an

  • Received:2017-10-11 Revised:2017-11-21 Accepted:2017-12-22 Online:2018-09-19 Published:2018-09-19

摘要： 以延安新区(北区)道路绿地土壤为研究对象,测定土壤理化指标,参照全国第二次土壤普查分级标准和内梅罗指数法对研究区域土壤进行综合肥力评价,为当地道路绿化建设提供依据和建议。结果表明,土壤有机质(均值14.37 g/kg)和速效钾(均值53.00 mg/kg)均属于4级、含量低的水平；碱解氮(均值34.28 mg/kg)属于5级、含量很低的水平,速效磷(均值2.64 mg/kg)属于6级、含量极低的水平。土壤pH为8.25 ~ 9.39,土壤总体上呈碱性-强碱性。容重为1.02 ~ 1.73 g/cm3,土壤紧实度较高。总盐为0.45 ~ 1.48 g/cm3,土壤盐渍化现象较突出。内梅罗综合肥力指数分析表明延安新区(北区)行道树土壤处于四级、肥力贫瘠水平(< 0.9)。根据以上结果,可采用增施有机肥和化学肥料、种植绿肥植物、改良土壤碱性等措施来进行绿地土壤管理。

Abstract: Greenbelt soil in the new district of Yanan was studied by physicochemical indexes measurement, and the fertility was evaluated according to the classification criteria for soil nutrients inThe 2nd National Soil Survey and Nemorrow formula, to provide a basis for road greening. The results indicated that soil organic matter and available potassium were in grade 4 (low level) with the average amounts of 14.37 g/kg and 53.00 mg/kg, respectively. Available nitrogen was in grade 5 (low level) with an average amount of 34.28 mg/kg, available phosphorus was in grade 6 (very low level) with an average amount of 2.64 mg/kg. The pH value was 8.25-9.39, which was alkali to high alkali. Soil bulk density was 1.02-1.73 g/cm3, and the porosity was low. The total salt was 0.45-1.48 g/cm3, soil salinization was serious. The Nemerow analysis showed that the border tree soil in the new district was in grade 4, poor fertility level (<0.9). Based on these results, some measures were proposed, such as using organic fertilizers, planting green manure plant, improving soil alkaline, to improve the soil fertility.