以含钛高炉渣为原料,采用加热法制备肥料,以提高其溶解性能,使其中的营养元素转化为易被植物吸收利用的形式,并通过盆栽实验研究了肥料对大豆生长状况、性状、产量和营养成分的影响.结果表明,炉渣中Mg,Ti,Fe的溶出率分别为88%,84%和75%,该肥料可以使大豆的株高、节数、主根长、叶干重和叶绿素含量明显增加;使大豆的单株枇荚数和荚皮重/粒重明显减少,单株荚数、单株荚重、单株粒数和单株粒重显著增加,对百粒重、蛋白质和淀粉含量影响不大.说明该肥料对大豆植株和根系的生长均有促进作用,对大豆有增产作用且增产作用是通过增加单株荚数、单株荚重和单株粒数来实现的.
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