青海省贵德县耕层土壤农化指标分析

目的]评价贵德县耕层土壤养分状况。方法]采用常规方法,分析贵德县499个耕层土壤8项农化指标。结果]贵德县耕层土壤平均有机质19.71 g/kg,全氮1.54 g/kg,全磷1.70 g/kg,碱解氮111 mg/kg,有效磷41 mg/kg,速效钾249 mg/kg,缓效钾1 029 mg/kg,pH 7.97。碱解氮、速效钾、缓效钾总体含量水平高;有效磷、有机质含量与丰缺指标比较,结果为中等水平。结论]该研究可为耕地地力评价和测土配方施肥提供基础数据。

Eight Agrochemical Indexes of Soil Content Analysis of Guide County in Qinghai Province

Objective]The objective is to evaluate soil nutrient situation.Method]Eight agrochemical indexes of top layer soil content analysis of 499 samples were analyzed by conventional method.Result]Top layer soil nutrient was as follows in Guide County: organic matter 19.71 g/kg,total nitrogen 1.54 g/kg, total phosphorus 1.70 g/kg, available nitrogen 111 mg/kg, effective phosphorus 41 mg/kg, available potassium 249 mg/kg, slowly available potassium 1 029 mg/kg,pH 7.97.On the whole,nutrient level of available nitrogen,available potassium, and slowly available potassium of Guide County soil was high.Content of effective phosphorus, organic matter was at medium level compared with abundance and deficiency index.Conclusion]The research can offer based data for the cultivated land fertility evaluation and soil testing and fertilizer recommendation.