摘要
选取辽宁省不同地区与土地利用方式下土样100个,进行土壤养分变异特征及相关性分析。结果表明,有机质属中等水平,全氮属中等稍丰富水平,全磷总体水平稍丰富,全钾属中等稍高水平,碱解氮属稍缺水平,速效磷和速效钾达丰富水平,土壤总体呈中性。全磷、速效磷、速效钾有较大变异性,CV在80.04%～99.92%,碱解氮、全氮、有机质、全钾有中等变异性,CV在28.21%～36.85%,pH值有弱变异性,CV为5.60%。碱解氮和有机质、碱解氮和全氮呈极显著正相关,全氮和有机质、全氮和速效磷呈显著正相关。
Selected 100 soil samples in Liaoning province in different districts and under different application methods, conducted a study on spatial variability and correlation of soil nutrients. The results showed： Organic matter was moderate, total N was moderate and comparatively high, total P was comparatively rich, total K was moderate and comparatively high, available N was comparatively low, available P and available K were rich, the soils were neutral. Total P,available P, available K had comparatively high variability, CV was 80.04% ～99.92% ,available N,total N,organic matter,total K had intermediate variability, CV was 28.21%～36.85%,pH had lower variability, CV was 5.60%. Available N and organic matter, available N and total N showed extremely significantly positive correlation, total N and organic matter,total N and available P showed significantly positive correlation.
出处
《湖北农业科学》
北大核心
2010年第6期1338-1340,共3页
Hubei Agricultural Sciences
关键词
土壤养分
空间变异
相关性
soil nutrient
spatial variability
correlation
