吉林省主要土壤类型固定态铵含量及其影响因素研究

通过野外调查取样和分析测定,研究了吉林省主要土壤类型固定态铵含量及其影响因素。结果表明:吉林省主要土壤固定态铵含量最高为336.72mg/kg,最低为57.87mg/kg,平均为187.62mg/kg;固定态铵在不同土壤类型中含量顺序为黑土黑钙土白浆土暗棕壤风砂土;土壤中固定态铵与0.01mm粘粒含量呈P0.01水平的极显著正相关,与0.001mm粘粒含量相关性不显著;与阳离子交换量呈P0.01水平的极显著正相关;与有机质呈P0.05水平的显著正相关;与pH值无相关关系。

Study on Fixed Ammonium Content of Main Soil Types and Its Affecting Factors in Jilin Province

By the method of field sampling and analysis to investigate, this paper researched fixed ammonium content of main soils in Jilin province and its affecting factors. The result showed that fixed ammonium content was from 57.87 mg/kg to 336.72 mg/kg, mean was 187.62 mg/kg, and black soil> black calcium soil > white bentonite soil > dark brown soil>wind sandy soil. Fixed ammonium content was positively correlated to clay(<0.01 mm) in 0.01 level, but was no correlated to clay(<0.001 mm). The other, fixed ammonium content was positively correlated to CEC in 0.01 level and was positively correlated to O.M. in 0.05 level, and was no correlated to pH.