徐州市城区公园绿地土壤养分状况

Soil nutrient status of park greenery plot in Xuzhou city zone

以徐州市三环路内4个城区的公园绿地土壤为研究对象,通过对其土壤的养分状况及化学性质取样分析,结果表明有机质含量为(1.05±0.41)%、全氮含量(0.071±0.045)%、全磷含量(0.053±0.051)%、全钾含量(1.860±1.449)%、碱解氮(47.7±29.9)mg?kg-1、速效磷(3.5±0.9)mg?kg-1、速效钾(121.7±53.5)mg?kg-1、PH值(8.31±1.55)。有机质及全量养分低于该地区自然褐土的平均值,有效养分不均衡,PH值有升高的趋势;有机质与全氮、全氮与碱解氮、PH值与速效钾有一定的相关性,其它指标间的相关性较差。

The park greenery plot soil in Xuzhou the third ring＇s city zone is studied in this paper. Sampling and analysis for soil nutrient status and chemical property, the content of organic matter is （ 1.05±0.41 ） %, the content of all quantity of nutrient is （0.071±0.045） %, the content of total phosphorus is （0.053±0.051） %, the content of total potassium is （1.860±1.449） %, the content of alkali-hydrolyzable nitrogen is （47.7±29.9） mg·kg^-1, the content of rapidly available phosphorus is （3.5±0.9） mg/kg, the content of rapidly available Potassium is （ 121.7±53.5 ） mg·kg^-1. and the PH value is （8.31±1.55）. The results show that the content of organic matter less than the average quantity of nature cinnamon soil of that area; available nutrient isn＇t equilibrium; the trend of PH will rise; organic matter, total nitrogen and alkali-hydrolyzable nitrogen, PH value and quick result Potassium have certain correlation,but the correlation among other index is poor.