Nutrient Content in Soils and Adaptability of Corn in Yuanzhou District,Guyuan City

[Objective] The aim was to research rational fertilization of corn in Yuanzhou District, Guyuan, Ningxia Hui Autonomous Region. [Method] Nutrient con- tents in soils in Yuanzhou District were measured with conventional analysis method and the suitable fertilization scheme of corn growth was proposed based on fertiliz- er-application rule of corn growth and nutrient balance. [Result] Soil in farmlands in Yuanzhou District was of alkalinity; organic matter, N, P and Zn were shortage; S was extremely insufficient; Fe and Mn were moderate; K was abundant; Cu would satisfy crop growth, [Conclusion] The research provides references for yield increase, reduction of chemical fertilizer and related pollution for corn growth.

固原市原州区土壤养分现状及变化趋势研究

目的:对固原市原州区耕地土壤养分变化趋势进行研究。方法:利用土壤养分常规分析方法,测定了原州区耕地土壤养分,并将测量结果与全国二次土壤普查结果进行了比较。结果:发现土壤有机质平均含量达14.44g/kg,增加了24.38%;全氮平均含量为0.998g/kg,增加了23.36%;碱解氮平均值68.83mg/kg,增加了96.04%;有效磷平均含量5.82 mg/k,增加了30.49%。结论:固原市原州区耕地土壤有机质、全氮、碱解氮、有效磷含量呈现出增加趋势,有效钾含量变化不大,土壤总体养分仍然属于低下水平。