摘要
分析了洛阳市主要粮田土壤247个土壤样品的养分状况。结果表明，土壤有机质、全氮、速效磷和速效钾的平均含量分别为1．25％、0．91g／kg、10．88mg／kg和128．7mg／kg；总体而言，有机质和全氮含量处于低水平（1％～296和0．8～1．0g N／kg），速效磷处于中低水平（5～20mg P／kg），速效钾处于中等水平（100～150mg K／kg）；有机质、全氮和速效磷含量的次数分布曲线呈高峰偏左的正偏峰，速效钾呈近似为高峰稍微偏右的正态峰；速效磷的变异程度（CV％）最大，有机质和全氮的次之，速效钾的最小。
247 soil samples selected from grain crop fields in Luoyang were examined. The results showed that the average contents of organic matter, total nitrogen, available phosphorus and available potassium were 1.25 %, 0.91 g/kg, 10.88 mg/kg, and 128.7 mg/kg, respectively. As a whole, the contents of organic matter and total N were low, the available P medium to low level, and the available K medium level. Frequency distribution of the contents of soil organic matter, total N, and available P appeared curves of deviating from normal distribution, which has left-deviating peaks, and the available K appeared an approximate normal distribution curve. The order of coefficient of variation （ CV % ） is available P 〉 organic matter, total N 〉 available K.
出处
《干旱地区农业研究》
CSCD
北大核心
2007年第1期82-87,共6页
Agricultural Research in the Arid Areas
基金
河南省科学技术厅科技攻关项目(0324060029)
河南科技大学青年基金(2004QN027)
关键词
粮田
土壤养分
洛阳市
grain crop fields
soil nutrient
status
