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研究旱作改水旱轮作对砂姜黑土中微量元素含量、有效性和赋存形态等的影响结果表明,砂姜黑土旱作改水旱轮作后,微量元素的总含量除Mo外,均呈贫化趋势且达显著水平;Cu、Fe、Mn和Mo的有效性明显提高,Zn的有效性降低,严重缺Zn可能限制作物产量提高;残留态、晶形铁态和碳酸盐态微量元素含量随旱作改水旱轮作时间的延续而降低,有机态和无定形铁态微量元素的含量则不断增加,代换态微量元素含量变化与有效态微量元素相似,呈两极分化,Cu和Ni增加,而Zn和Mn降低。
The results showed that the total content of trace elements in soil changed from dry to wet rotation of Shajiang black soil except for Mo, The availability of Cu, Fe, Mn and Mo significantly increased, while the availability of Zn decreased. The serious lack of Zn may limit the increase of crop yield. The contents of residual, crystalline iron and carbonate trace elements The content of trace and trace elements in organic and amorphous iron increased with the extension of time from drought to drought and rotations. The content of substituted trace elements was similar to that of available trace elements, with polarization and Cu and Ni increasing , While Zn and Mn decrease.