【摘要】 在吉林西部草原生态环境调查的基础上,对草原土壤进行了理化性质、营养成分等系统测试,选择其中的有机质、全氮、全磷、全钾、水解性氮、速效磷、速效钾、碱化度、pH值等项目作为评价指标,应用主成分分析法,对吉林西部17种草地进行综合评价,将吉林西部草原土壤分为五个等级,并用灰色关联度分析方法进行了对比。结果表明,两种评价方法得出的结论基本一致。更多还原

【Abstract】 Based on the investigation of grassland environment in the western Jilin Province,the physical and chemical characteristics and nutrient components in the soil were tested. The organic matter,Total N,Total P,Total K,Available N,Available P,Available K,ESP and pH value were chosen as main indexes for value,and the principal component analysis was used to evaluate seventeen types of grassland soil in this area. The soil in the grassland of northern Jilin Province was Sub divided into five grades,and gray relative analysis was done at the same time for parallel. The results from the two ways are the same in substance.更多还原