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本文对磁性改良剂(磁化铁尾矿和磁化粉煤灰)与红壤的生物、物理、化学性质以及苏丹草生长的影响作了初步研究.施用磁性改良剂可促进红壤的呼吸作用和转化酶、酸性磷酸酶活性,从而有利于土壤中各种生化反应的进行;促进红壤的微团聚化,0.05-0.25mm级微团聚体明显增加,大于5mm的大团聚体数量减少,红壤结构状况得到改善,土壤坚实度下降;降低红壤酸度及交换性氢和铝.施用磁性改良剂同时可促进种子萌发,提高出苗率,促进苏丹草生长和增产.在各种磁场处理的改良剂中,分别以0.35T(磁场强度特斯拉)尾矿和0.55T粉煤灰的改土增产效果为佳.
In this paper, the effects of magnetic modifiers (magnetized iron tailings and magnetized fly ash) and the biological, physical and chemical properties of red soil and the growth of sudangrass were preliminarily studied. The application of magnetic modifiers can promote the respiration and invertase, Acid phosphatase activity, which is conducive to a variety of soil biochemical reactions; promote red soil micro-agglomeration, 0.05-0.25mm microaggregates increased significantly, more than 5mm large aggregates decreased, the structure of red soil conditions have been improved, Soil solidity decreased; Red soil acidity and exchangeability of hydrogen and aluminum.Application of magnetic modifier can also promote seed germination, increase the emergence rate and promote Sudan grass growth and yield.In all kinds of magnetic treatment modifiers, respectively, 0.35T (Magnetic field intensity Tesla) tailings and 0.55T fly ash soil improvement effect is better.