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以陕西省泾阳县云阳镇不同蔬菜种植年限日光温室的重壤质土壤为对象,以相邻露地菜田土壤为对照进行系统采样,测定了日光温室土壤的主要物理性状,研究了土壤物理质量的演变趋势.结果表明:日光温室蔬菜栽培对0～30cm土层容重的影响较大,使0～10cm土层容重增加,10～30cm土层容重减小,对30～40cm土层容重的影响甚微.日光温室土壤中<0.01mm物理性粘粒含量和<0.001mm粘粒含量在0～40cm剖面呈现“上低下高”的特征,两种粘粒均发生下移现象,这种现象随日光温室蔬菜栽培时间的延长而加强.日光温室蔬菜栽培的最初5年内土壤的田间持水量下降明显,降幅达13.8%,之后变化较小,相对稳定.
Taking the heavy-loamy soils of sunlight greenhouse in Yunyang Town, Jingyang County, Shaanxi Province as object, the soil in adjacent greenhouse was sampled for systematic sampling. The main physical properties of soils in solar greenhouse were determined. The effects of soil physical quality The results showed that the cultivation of vegetables in solar greenhouse had a great influence on the bulk density of 0 ~ 30cm soil layer, which increased the bulk density of 0 ~ 10cm soil layer and decreased the bulk density of soil layer of 10 ~ 30cm soil layer, Slightly less than 0.01mm physical clay content in the soil in the greenhouse and <0.001mm clay content in the 0 ~ 40cm profile showed “low on the high ” characteristics, the two kinds of clay particles are down phenomenon, this The phenomenon intensified with the time of vegetable cultivation in sunlight greenhouse.The field water holding capacity of soil in greenhouse decreased significantly by 13.8% in the first 5 years of cultivation, and then changed little and relatively stable.