施用钢渣对红壤旱地土壤理化性质和大豆产量的影响
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“十三五”国家重点研发计划项目(2017YFD0301601);校企合作项目(9131205720)


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    摘要:

    2015—2017年,通过田间定位试验,在等量氮、磷、钾施用水平下,研究不同用量(0、900、1 200、1 500 kg/hm2)钢渣对大豆产量及其构成,土壤的容重、总孔隙度、pH、CEC、碱解氮、有效磷、速效钾、有效硅和重金属含量的影响。结果表明:与常规施肥相比,增施钢渣有利于提高大豆产量,3年产量平均增长7.89%,且钢渣用量1 200 kg/hm2的处理的增产效果最好;显著提高红壤旱地土壤总孔隙度、pH、CEC和碱解氮、有效磷、速效钾、有效硅含量;土壤和大豆籽粒中重金属Hg、Pb、Cr、Cd、As含量均未超出土壤环境质量标准(GB 15618—1995)和国家食品卫生标准(GB 2762—2012)。

    Abstract:

    In 2015–2017, with an aim to understand effects of steel slag application to field on soybean yield and soil properties, we used four groups steel slag, 0(CK), 900, 1 200, 1 500 kg/hm2, to fields, which were applied the same amount of nitrogen, phosphorus and potassium. The measured indexes included soybean yield and its components, soil bulk density, total porosity, pH, CEC and the contents of alkali–hydrolysis nitrogen, available phosphorus, available potassium, available silicon and heavy metals in the red soil upland. The results showed that application of steel slag was in favor of soybean yield, with increment by 7.89% at average and the treatment of 1 200 kg/hm2 steel slag obtaining the highest yield. Meanwhile, soil total porosity, pH, CEC, and the contents of alkali–hydrolysis nitrogen, available phosphorus, available potassium and available silicon in upland red soil were significantly increased. The contents of heavy metals Hg, Pb, Cr, Cd and As in soil and soybean were still in the range of the soil environmental quality standards (GB 15618–1995) and national food hygiene standards (GB 2762–2012).

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吴建富,杨小华,高绘文,范呈根.施用钢渣对红壤旱地土壤理化性质和大豆产量的影响[J].湖南农业大学学报:自然科学版,2018,44(6):.

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  • 在线发布日期: 2018-12-25
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