耕地土壤养分现状研究——基于陕西省渭南市临渭区耕地
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摘要
通过对渭南市临渭区耕地中301个样地土壤养分进行取样分析发现:pH呈中性偏碱,有机质总体水平较高,碱解氮含量整体较缺乏,有效磷中等水平和丰富等级的比例大,且空间差异大,速效钾含量很丰富;各养分变异程度为pH<速效钾<有机质<碱解氮<有效磷。与全国第二次土壤普查临渭区耕地土壤养分含量比较,全区pH变化很小;有机质增幅较大,并还有一定上升空间;碱解氮增幅明显;有效磷增幅超200%,土壤中磷元素累积显著,速效钾为负增长。
The soil nutrients in 302 plots of farmland in Linwei District was analyzed that the p H was moderately alkaline,the overall level of organic matter was relatively high,the content of available nitrogen was lack,the ratio of available phosphorus was big,the space difference was big,the content of available potassium was very rich,and the variation degree of each nutrient is p H
The soil nutrients in 302 plots of farmland in Linwei District was analyzed that the p H was moderately alkaline,the overall level of organic matter was relatively high,the content of available nitrogen was lack,the ratio of available phosphorus was big,the space difference was big,the content of available potassium was very rich,and the variation degree of each nutrient is p H
引文
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[3]吴琼,邹国元,史振鹏,等.北京东南郊农田土壤养分状况及空间分布特征[J].北方园艺,2015(23):173-178.
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[8]阮松,方圆,温翠平,等.三亚耕地养分肥力状况及其时间变异[J].热带农业科学,2012,32(5):26-30.
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