西安市城乡边缘区不同类型土壤性质对比分析

摘要

以西安市城乡边缘区7类土壤为研究对象，对比了不同类型土壤的性质差异，包括粒度、磁化率、速效N、P、K和重金属舍量。结果表明：西安市城乡边缘区土壤以粉粒和黏粒为主；频率磁化率的范围在8．53％～9．97％，除典型菜地和生态林地外，不同区域变异较小；土壤中速效N、P、K的平均含量在0—5cm、10～15cm土层中相对较高，且速效K的含量远高出速效N、P。%Taking seven utilization types of rural-urban fringe soil in Xi＇an City as the object, the research compared soil properties of utilization different types,including particle size ,magnetic susceptibility, contents of available N, P, K and heavy metals. The results showed that, rural-urban fringe soil in Xi＇an City was mainly made up of silt and clay;frequency magnetic susceptibility ranged between 8.53% and 9.97% ,different regional variation was small except for typical vegetable soil and ecological forestland ;average content of available N,P and K in soil was relatively higher of 0~5 cm and 10-15 cm soil layer, and the content of available K was far higher than available N, P.