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为促进煤炭洗选加工废弃物尾煤泥在农业生产中的科学利用，以裸燕麦品种草莜1号和蒙农大燕1号为研究对象，尾煤泥基施量0 （CK）、7 500、15 000、22 500 kg·hm^-2 ，在砂壤土田间进行随机试验，并对尾煤泥、土壤、燕麦茎叶的重金属和矿质营养成分进行了分析。结果表明，尾煤泥中的重金属镍（Ni）、铜（Cu）、锌（Zn）、铅（Pb）、铬（Cr）、镉（Cd）、汞（Hg）、砷（As）含量低于《城镇污水处理厂污泥处置：农用泥质》标准（CJ/T 309-2009）中的规定限量；尾煤泥显著（P＜0.01）提高了土壤与燕麦的氮（N）、钾（K）、钙（Ca）、镁（Mg）等养分含量及燕麦产量；两个燕麦品种对尾煤泥效应趋势一致；燕麦茎叶K含量与干草产量和籽粒产量的相关性最大，相关系数分别为0.446 8和0.571 1。综上所述，工业废弃物尾煤泥营养成分较高，可在土壤中安全施用，在燕麦种植中以15 000 kg·hm^-2直接基施为宜，可提高砂壤土的容重10.48%，提高保水性（含水量提高16.84%），燕麦干草产量和籽粒产量两年平均提高42.79%和17.63%。

英文摘要:

In order to promote the application of coal tailing, a waste of coal processing, in agricultural soils, two varieties(Caoyou 1 and MNDY 1) with strong adaptability were selected as materials. A field trail was conducted on sandy soil with different application of coal tailing of 7 500 kg·hm^-2, 15 000 kg·hm^-2, and 22 500 kg·hm^-2, with no application as control. The heavy metals and nutritional composition in coal tailing, soil and oat stem and leaf were analysed. The results showed that, the contents of heavy metals, such as Ni, Cu, Zn, Pb, Cr, Cd,Hg and As, in coal tailing were lower than the limit amount listed in the standard of “Urban sewage treatment plant sludge disposal:Agricultural muddy”(CJ/T309-2009). The coal tailing significantly(P<0.01) improved the nutritional composition of the soil and oats. The influence of coal trailing on the two oat varieties showed consistent trend. The K content in oat stem and leaf was highly correlated with hay yield and grain yield, with the correlation coefficients of 0.446 8 and 0.571 1, respectively. To conclude, the industrial waste coal tailing has great nutrients and could be safely used in soil. The optimum application amount was suggested as 15 000 kg·hm^-2 for oat planting, which could increase bulk density of sandy loam soil and water content by 10.48% and 16.84%, and increase yield of oat hay and grain by 42.79% and 17.63% in two years.

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