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保护地处于半封闭状态下,与露地土壤相比,具有复种指数大,常年温、湿度大,肥料投入多等特点。多年的保护地土壤理化性质发生显著变化,出现土壤疲劳症状。土壤疲劳不仅影响保护地土壤的可持续利用,还对作物的食用安全构成威胁。合理施用有机肥料对科学利用和调配土壤、保持地力,具有显著效果。
The protected area is in a semi-closed state and has the characteristics of multiple cropping index, perennial temperature, high humidity and more input of fertilizers compared with open soil. The physical and chemical properties of soils in protected areas have changed significantly for many years, and soil fatigue symptoms appear. Soil fatigue not only affects the sustainable use of soil in protected areas, but also threatens the food safety of crops. Rational use of organic fertilizer on the scientific utilization and deployment of soil, maintain fertility, with significant results.