利用煤炭燃烧废弃物的绿化基质试验

Experiment of growing medium in using combustion wastes of coal

为了给废弃地的生态治理提供优质、价廉的植生基质,促进废弃物的再利用,应用正交试验设计方法,将粉碎后的炉渣、秸秆及未经处理的粉煤灰作为基质组成的3因素,选用L9(34)正交表安排各因素的配比,得到9种基质,测定各基质的物理化学特性,并分别在各基质中播种高羊茅,观测分析高羊茅的出苗率、成活率和生物量,得到最优化的基质类型为A2B2C3,粉煤灰、炉渣、秸秆体积配比为2∶2∶3,各因素的主次关系依次为B(炉渣)—A(粉煤灰)—C(秸秆)。

In order to provide high-quality, cheaper growing medium for the ecological management of waste land, and promote the reuse of waste, orthogonal design methods were used. The crushed slag, straw, and non-treated fly ash were used as three factors of growing medium composes. According to the L9（3^4） orthogonal tab, nine different ratios of growing medium were obtained. The physics-chemical character of growing mediums were measured, then the Festuca arundinacea seeds were planted in the growing medium. Emergence rate, survival rate, and biomass of Festuca arundinacea were observed and analysed. The most optimized growing medium type was A2B2C3,The volume ratio of fly ash, slag, and straw were 2 to 2 to 3. The order of the primary and secondary factors were B （slag）, A （fly ash）, and C （straw）.