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以黄泛平原壤质潮土不同年限的设施栽培土壤为研究对象,探讨了设施栽培条件对土壤养分及土壤有机质组成的影响。结果表明,设施栽培土壤碱解氮、速效磷、速效钾、盐分含量均明显高于大田,其含量主要取决于施用化学肥料的种类和数量,随栽培年限的增加而增加;土壤有机质、腐殖酸、胡敏酸含量随种植年限有升高趋势;HA/FA与栽培年限显著相关,表示设施栽培条件下,土壤熟化程度随有机肥料的逐年施用而有所提高,但HA/FA变化幅度不大,这可能与设施栽培形成的高温高湿条件及施用有机肥料中难分解物质的含量有关。
Taking cultivation soil of different ages in the Yellow River plain loamy soil as research object, the effects of planting cultivation on soil nutrient and soil organic matter composition were discussed. The results showed that the contents of available nitrogen, available phosphorus, available potassium and salt in the soils were significantly higher than those in the field. The content of chemical fertilizers mainly increased with the increase of planting years. The content of soil organic matter, humus The contents of acid and humic acid increased with the growing years. HA / FA was significantly correlated with the years of cultivation, indicating that under the conditions of cultivation, the degree of soil ripening increased with the annual application of organic fertilizers, but the HA / FA range Large, which may be related to the cultivation of high temperature and humidity conditions and the application of organic fertilizers in the content of refractory substances.