摘要
用修改后的内梅罗公式作为土壤肥力的评价模型,将传统的统计方法与地统计学方法及GIS技术相结合,研究了郑州市土壤肥力的空间变异规律,对郑州市土壤质量进行了定量化的评价。结果表明,郑州市土壤速效磷以差级水平为主,全氮含量中等之外,pH、速效钾、CEC和有机质均以中等级以上水平为主;相对来说,速效磷含量总体较低是郑州市土壤肥力的主要限制因子郑州市土壤综合肥力系数的空间分布总体上具有以下特征:在东北西南方向上,土壤的综合肥力系数很较低,大面积处在差的水平,其中少面积具较高肥力。东南和西北方向的肥力较高,大部分处在良和中的水平。
Spatial distribution and comprehensive evaluation on fertility index in suburb of ZhengZhou, have been studied through combinating the methods of statistics, geostatistics and GIS with the changed Nemoro formula as evaluation model .The results showed a low level of soil available phosphorus, a middle level of soil total nitrogen and a high level of soil pH ,available potassium, CEC and organic matter. The low available phosphorus content may be comparative limiting factors of soil fertility in some area of ZhengZhou suburb. As for the spatial distribution of soil fertility in suburb of ZhengZhou, it also showed that In the southwest and Northeast direction, the comprehensive fertility coefficient of the soil is very relatively low, in the low level by a large scale, among them some higher fertility of the area. Southeast and northwest of direction have the high fertility relatively, in majority good and middle level.
出处
《中国农学通报》
CSCD
2006年第1期166-168,共3页
Chinese Agricultural Science Bulletin
基金
国家自然科学基金项目(40471060)。
关键词
土壤肥力
空间分布
评价
郑州市
Soil fertility, Spatial distribution, Evaluate, Suburb of ZhenghZhou
