本研究拟选用蛭石、珍珠岩和泥炭土为改良剂,以适宜黑麦草生长为目标,对赤泥进行土壤化,以期解决赤泥难以利用的问题.选用泥炭土,珍珠岩,蛭石改良剂混配进行黑麦草种植实验.结果表明:泥炭土,珍珠岩,蛭石均改善赤泥基质粒径组成;蛭石和珍珠岩明显改善物理机械结构,且混配物理改良效果要优于单独添加泥炭土;添加泥炭土能够显著降低赤泥本身的强碱性,并明显提升黑麦草的7d发芽率.实验结论:经泥炭土与蛭石或珍珠岩混配改良后的拜尔法赤泥可满足黑麦草的生长需求.%This study intends to modify Bayer red mud to be suitable for plant growing with the mixture of perlite, peat and vermiculite,In order to solve the problem of red mud stockpiling difficult to use.The peat soil, perlite, vermiculite modifier mixed red mud soil improvement and ryegrass planting experiment.Results showed that peat, perlite and vermiculite can improve the particle size composition of red mud matrix.Vermiculite and perlite can obviously improve the porosity and water holding rate of red mud.Moreover, the mixture of vermiculite and peat or perlite and peat had the better effects on the physical properties improvement of red mud than peat soil alone.Adding peat can significantly reduce the alkalinity of red mud.So it could concluded that the modified red mud with peat and vermiculite or perlite mixture is suitable to growth of lolium perenne.
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