华安县耕地土壤氮磷钾含量及丰缺状况研究

N, P, K Contents in Cultivation Soil of Hua'an County and Abundance and Deficiency Status

采用野外调查与室内分析相结合的方法研究华安县不同耕地土壤类型土壤氮磷钾含量及丰缺状况。结果表明:(1)土壤有机质含量为(23.74±5.06)g/kg,总体上处于较丰富水平。(2)全氮含量为(1.20±0.17)g/kg,总体处于较高水平;碱解氮为(46.57±11.19)mg/kg,属于缺乏水平。(3)全磷量(0.72±0.17)mg/kg,总体处于中等水平;有效磷含量(22.48±14.23)mg/kg,总体处于中等水平,且不同土壤类型之间有效磷差异明显。(4)全钾量(15.12±7.06)g/kg,处于缺乏水平;速效钾含量为(57.00±27.98)mg/kg,处于缺乏水平。

N,P,K contents and abundant and deficiency status of different kinds of cultivated soil of Hua＇an County were investigated by the way of field investigation and laboratory analysis.The results showed that：（1）Organic matter content in the soil is（23.74±5.06）g/kg at a rich level in general;（2）Total nitrogen content in the soil is（1.20±0.17）g/kg at a higher level in general,available n content is（46.57± 11.19）mg/kg at a lack of level;（3）Amount of total phosphorus and effective phosphorus content in the soil is（0.72 ±0.17）mg/kg,（22.48 ±14.23）mg/kg at a medium level in general.The different soil kinds effective phosphorus content have differences in apparent;（4）Amount of total potassium and soil available potassium content in the soil is（15.12±7.06）g/kg and（57.00±27.98）mg/kg at a lack level.