摘要： 采集山东济南日光温室蔬菜地表层土壤(0~20 cm)和棚外露地表层土壤,测定有机质、碱解氮、速效磷、速效钾、pH、电导率等土壤养分含量,通过分析结果表明,日光温室蔬菜土壤有机质含量平均值21.6 g/kg,碱解氮含量平均值为115.4 mg/kg,土壤速效磷含量平均值为122.4 mg/kg,速效钾含量平均值为455.5 mg/kg,pH平均值为7.90,电导率平均值为0.457 ms/cm,其中有机质、碱解氮、速效磷、速效钾、电导率显著高于露地土壤,增幅分别为77.0%,66.7%,472.0%,173.4%,60.9%;而pH低于露地土壤0.23。日光温室土壤有机质、碱解氮的积累规律不明显;速效磷、速效钾、电导率、pH与棚龄间有明显的累积规律,其相关系数分别为0.7368,0.60,0.6547,-0.7206。日光温室土壤有明显的酸化和盐渍化现象,各种养分大量累积。

关键词: 日光温室, 土壤, 累积特征

Abstract: The vegetable f ields topsiol( 0- 20 cm) of solar greenhouse and the outdoor open field topsoil were collectedin Jinan, Shandong province to measure the content of the organic C, alkal-i N, avai-l P, avai-l K, pH, electric conductiv-ity rate etc.The result showed that: the averaged content of organic C in the vegetable f ield siol of solar greenhouse was 21.6 g/ kg, higher than that in the open field soil by 77%. The soil alkal-i N content, the avai-l P content, the avai-l K contentin the greenhouse were 115.4, 122.4, 455.5 mg/ kg respectively, and the increased percentage were 66.7%,472.0%and 173.4% respect ively compared with the open field soil.The soil alkal-i N accumulation and the greenhouseage have no obvious relation,The solar greenhouse soil avail Pcontent and the solar avail K content were positive with thegreenhouse age. The solar greenhouse soil pH averaged 7.90, lower than that of the open field soil by 0??23. The electric conductivity of the siol was 0.457 ms/ cm, the soil electric conductivity rate was consumedly higher than that in the opef ield soil, increased by 60.9% than that of open field soil. The vegetable soil of the solar greenhouse were acidify and salted and the nutrient greatly accumulated.

Key words: Solar greenhouse, Soil, Nutrient accumulation

中图分类号: 

• S14