【摘要】 对河南省新乡市1991~2006年间106个土壤养分监测网点的有机质、全氮、P2O5和K2O 4项指标的监测数据进行了多元统计分析。结果表明:新乡市土壤养分4项指标存在显著差异,根据聚类分析,全市所辖9县市区划分为4大土壤养分类型区。并根据调查结果分析,提出了保持土壤肥力、实行农业可持续发展的建议。更多还原

【Abstract】 The organic matter,whole nitrogen,phosphorus pentoxide and potassium oxide of 106 soil samples were statistic analyzed in Xinxiang City from 1991 to 2006.The result showed that there was significant difference among the four statistic indexes.Nine Counties were divided into four types by cluster analysis.On the basis of investigation results,some suggestions of keeping soil fertilizer and practicing sustainable development were put forward.更多还原