桐城市耕地主要养分变化分析

为掌握桐城市耕地主要养分状况,提升耕地潜在生产力,促进农业绿色可持续发展,该研究将桐城市2008年与2010年两期耕地采样点pH(酸碱度)和主要养分数据进行整合分析,结果表明：2018年桐城市耕地土壤pH平均值为5.3,平均属于酸性土壤；耕地土壤有机质平均值为25.1g/kg,平均属于中等水平；耕地土壤有效磷平均值为10.8mg/kg,平均属于中等水平；耕地土壤速效钾平均值为94.9mg/kg,平均属于中等水平,2008年至2018年间,桐城市耕地土壤pH、有机质、有效磷和速效钾含量均发生较大变化,其中有机质含量呈下降趋势,平均降低6.2g/kg,土壤pH少量提升,平均提高0.2个单位,有效磷和速效钾呈上升趋势,平均值分别提高2.6mg/kg、15.0mg/kg,需加强耕地土壤培肥,提高养分投入力度。

Analysis of Main Nutrient Changes of Cultivated Land in Tongcheng City

In order to grasp the main nutrients status of the cultivated land in Tongcheng, increase the potential productivity of cultivated land, and promote the sustainable development of green agriculture, this study integrated the pH and main nutrients data of the cultivated land sampling points in Tongcheng in the past ten years. The results show that: 2018 In Tongcheng City, the average soil pH of cultivated land is 5.3, which is acidic soil on average; the average organic matter of cultivated land is 25.1g/kg, which is medium level on average; the average available phosphorus of cultivated soil is 10.8mg/kg, which is medium level on average; The average soil available potassium is 94.9 mg/kg, which is a medium level on average. During the ten years from 2008 to 2018, the soil pH, organic matter, available phosphorus and available potassium content of the cultivated land in Tongcheng all changed greatly, and the organic matter content showed a downward trend, An average decrease of 6.2g/kg, a small increase in soil pH, an average increase of 0.2 units, available phosphorus and available potassium are on the rise, and the average values ??are increased by 2.6mg/kg and 15.0mg/kg respectively. It is necessary to strengthen cultivated soil fertility and increase nutrient input intensity.