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对不同年份定点设施土壤及7年以上设施土壤不同深度土层进行有机质、全氮、速效磷、速效钾、pH值、可溶性盐等理化指标的测定分析,结果表明:随着栽培年限的上升,耕作层理化指标呈现“三高、两低、一平”的趋势,即速效钾、速效磷、盐分显著升高;有机质、pH值下降;全氮持平。因此,对设施土壤应进行测土配方施肥,以促进设施农业的可持续发展。
The physical and chemical indexes such as organic matter, total nitrogen, available phosphorus, available potassium, pH value and soluble salt of soil in fixed facilities and soil with different depths for more than 7 years in different years were measured and analyzed. The results showed that with the increase of cultivation years, Tillage layer physical and chemical indicators showed “three high, two low, one flat ” trend, namely available potassium, available phosphorus, salt increased significantly; organic matter, pH decreased; Therefore, soil testing and fertilization should be carried out on the soil of facilities to promote the sustainable development of facility agriculture.