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通过采集大棚土壤样品研究合肥地区大棚土壤肥力状况,结果表明,该地区大棚土壤有效磷提高较快,而有机质、有效钾含量上升较慢,土壤有酸化的趋势,0~10 cm土层硝酸盐比露地提高5.9倍,水溶性盐含量增加54.8%,硝酸盐和水溶性盐表层积累作用最大,随着大棚种植年限延长次生盐渍化程度加重。解决这一问题需要从土壤管理、施肥、灌溉、耕作、政策等多方面采取措施。
The soil fertility of greenhouse in Hefei area was studied by collecting greenhouse soil samples. The results showed that available phosphorus in greenhouses increased rapidly in this area, while the content of organic matter and available potassium increased slowly, the soil was acidified, and nitrate in 0 ~ 10 cm soil layer 5.9 times higher than the open field, water-soluble salt content increased 54.8%, nitrate and water-soluble salt accumulation of the role of the surface maximum, with the extension of greenhouse planting secondary salinization increased. To solve this problem, we must take measures from the aspects of soil management, fertilization, irrigation, farming and policies.