耕地自然质量等级与土壤主要肥力指标的关系

    The relationships between the natural quality grade of arable land and main soil fertility indicators

    • 摘要: 【目的】研究耕地自然质量等级与土壤肥力指标间的关系.【方法】基于化州市耕地质量等级监测工作,将化州市耕地分为4个监测分区,布设38个采样点,调查测定耕地质量监测指标和主要土壤肥力指标,并对其关系进行研究.【结果和结论】耕地自然质量等级指数(y)与土壤主要肥力指标[pH(x1)、碱解氮含量(x2)]间存在如下数学关系式:y =1 300.15+630.33 x1+3.24x2. pH、碱解氮含量与耕地自然质量等级的10个原始监测指标均具有显著相关性,与自然质量等指数也具有显著的线性关系.

       

      Abstract: 【Objective】The relationships between arable land natural quality grade and main soil fertility indicators were studied. 【Method】Arable land quality monitoring indicators and the soil fertility indicators were investigated after the study area was divided into four monitoring partitions and 38 sampling points were laid, based on the work of Huazhou arable land quality grade monitoring. 【Result and conclusion】The results showed that the mathematical relationship between the arable land quality level(y) and the main soil fertility indicators[pH(x1); available nitrogen content(x2)] was y =1 300.15+630.33 x1+3.24x2. pH and available nitrogen significantly are correlated with ten original monitoring indicators of arable land, and the two fertility indicators and the natural quality grade index also have a significant linear relationship.

       

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