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以八一镇设施大棚为对象,研究了不同种植年限设施菜地土壤养分变化以及对硝酸盐累积、不同种类蔬菜硝酸盐含量的影响。结果表明:随着大棚使用年限的增加,土壤基础养分均出现了累积,硝态氮累积较为明显,3年棚龄的大棚中叶菜类蔬菜已出现重度硝酸盐污染,茄果类蔬菜硝酸盐污染较低。
Taking the greenhouses of Bayi town as an example, the changes of soil nutrients, nitrate accumulation and the nitrate content of different kinds of vegetables in different planting years were studied. The results showed that with the increase of the service life of greenhouses, the accumulation of soil basic nutrients and the accumulation of nitrate nitrogen were obvious. The heavy nitrate pollution of vegetable vegetables in the middle of the three-year-old greenhouses appeared. The nitrate pollution of eggplant vegetables Lower.