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通过对2006年采集的1 466个土壤样品分析化验,发现姜堰市土壤有机质、全氮、速效磷、速效钾分别达到了18.19 g/kg、1.17 g/kg、15 mg/kg、80 mg/kg,与1982年第二次土壤普查结果相比,土壤有机质、全氮、有效磷、有效钾等主要肥力指标有了较大幅度的提高。但仍有部分耕地有效磷、有效钾较低,达不到高产土壤的要求,从可持续发展角度出发,仍应施用磷、钾元素肥料,以保持土壤中磷、钾元素的动态平衡和增磷补钾工程的成果。
Through the analysis of 1 466 soil samples collected in 2006, it was found that soil organic matter, total nitrogen, available phosphorus and available potassium in Jiangyan reached 18.19 g / kg, 1.17 g / kg, 15 mg / kg and 80 mg / kg. Compared with the result of the second soil survey in 1982, the main fertility indexes such as soil organic matter, total nitrogen, available phosphorus and available potassium have been greatly improved. However, there are still some cultivated land available phosphorus, the available potassium is low and can not meet the requirements of high-yielding soils. From the perspective of sustainable development, phosphorus and potassium fertilizers should still be applied to keep the dynamic balance and increase of phosphorus and potassium in the soil P potassium project results.