许昌市休闲绿地土壤肥力特征研究

以许昌市休闲绿地表层土壤为研究对象,在野外采样和室内分析的基础上,对其土壤肥力特征进行研究,以期为城市绿地土壤养分研究及管理提供参考。结果表明,许昌市休闲绿地表层土壤速效氮含量为12.55～176.44mg/kg,均值54.74mg/kg,整体上属于土壤养分分级的5～6级;速效磷含量为4.61～76.86mg/kg,均值32.18mg/kg,整体上为3级及其以上;速效钾含量为177.36～477.54mg/kg,均值324.23mg/kg,整体上属于1级;土壤有机质含量为16.48～78.87g/kg,均值40.67g/kg,整体上为2级及其以上;土壤综合肥力指数为1.29,属于三等土壤,肥力水平一般。因此建议,许昌市休闲绿地应多栽植绿肥植物;增施氮肥以均衡养分提高土壤肥力水平,增施有机肥以平衡土壤酸碱度改善土壤质量。

Soil Fertility Characteristics of Recreation Green Land in Xuchang

The soil fertility characteristics of recreation green land were analyzed in Xuchang,so as to provide theoretical reference for research on soil nutrients and management of soil in urban green land.The conclusions were as follows:the content of available nitrogen ranged from 12.55 mg/kg to 176.44 mg/kg,with the mean of 54.74 mg/kg and the overall level was between the fifth and the sixth;the content of available phosphorus ranged from 4.61 mg/kg to 76.86 mg/kg,with the mean of 32.18 mg/kg and the overall level was at least the third;the content of available potassium ranged from 177.36 mg/kg to 477.54 mg/kg,with the mean of 324.23 mg/kg and the overall level was at least the first;the content of organic matter ranged from 16.48 g/kg to 78.87 g/kg,with the mean of 40.67 g/kg and the overall level was at least the second.The soil fertility composite index was 1.29 and the level was the third,indicating a common soil fertility.The advices for the management of recreation green land were planting green manure plants,increasing the nitrogen and manure application to improve the soil fertility and quality.