宝鸡市陈仓区苹果园土壤养分空间分布及土壤肥力综合评价

Spatial distribution of soil nutrients and comprehensive evaluation of soil fertility in apple orchards in Chencang District of Baoji City

以陕西省宝鸡市陈仓区不同乡镇的苹果园为采样单位采集土壤样品,测定土壤pH、有机质、全氮、有效磷、速效钾、有效铁、有效锰、有效铜和有效锌等指标的质量比,并利用相关性分析和主成分分析法对土壤养分综合肥力进行评价。结果表明:在各采样点间土壤pH的变异性较小,土壤pH整体偏碱性;土壤有效磷质量比处于较低水平;有机质、全氮、有效铁、有效锰、有效铜、有效锌质量比处于中等水平;速效钾质量比处于较高水平。因此,在今后的生产中应注意钾肥的合理施用。

In order to study the soil fertility of apple production areas in Chencang District,Baoji City,Shaanxi Province,soil samples were collected from apple orchards in different townships of Chencang District as sampling units,and the indicators of soil pH,organic matter,total nitrogen,effective phosphorus,quick-acting potassium,effective iron,effective manganese,effective copper,and effective zinc were determined,and the comprehensive fertility of soil nutrients was evaluated by using the correlation analysis and principal component analysis.The results show that the variability of soil pH among samplings was small;the overall soil pH was alkaline;the content of effective phosphorus was at a low level;the content of organic matter,total nitrogen,effective iron,effective manganese,effective copper and effective zinc was at a medium level;and the content of quick-acting potassium was at a very high level.