采煤沉陷地新型复垦基质上种植三叶草的试验研究

[目的]为采用粉煤灰-酒糟复合基质填充塌陷区种植三叶草恢复矿区生态提供科学依据。[方法]盆栽试验中,采用不同比例粉煤灰-酒糟复合基质种植三叶草,观察测定三叶草的出苗率、相对出苗率、外观、株高等生长指标,并分析种植三叶草后基质的养分变化。[结果]粉煤灰(60%～95%)与酒糟(5%～40%)按照不同比例混配的基质,基本能够满足三叶草生长的需要。酒糟含量为20%时,三叶草出苗率较好,成活率较高,生长状况良好,而纯粉煤灰种植三叶草的效果差。[结论]粉煤灰-酒糟复合基质提供了植物生长所需的养分,有利于植物根系的生长发育。从技术和经济的综合效益来看,在粉煤灰-酒糟复合基质中酒糟含量20%为适宜种植三叶草的最佳配比。

Experimental Study on Planting Shamrock on the Newly Reclaimed Medium in Coal Mining Subsidence Land

[Objective] The aim was to supply scientific basis for restoring the ecology of mining areas by planting shamrock in subsidence area filled with fly ash-lees compound media. [Method] In pot experiment, shamrocks were planted on the compound media with different fly ash-lees ratios to observe and determine their growth indices such as seedling rate, relative seedling rate, appearance and plant height and analyze the nutrient change of media planted shamrocks. [Result] The compound media with different ratio of fly ash (60%-96%) to lees (5%-40%) could basically satisfy the growth demand of shamrock. When the lees content was 20%, the shamrock had better seedling rate, higher survival rate and good growth status, but the effect of planting shamrock on pure fly ash was bad. [Conclusion] The fly ash-lees compound medium supplied nutrients needed for plant growth and was in favor of the growth and development of plant roots. According to the comprehensive benefit of technology and economy, the lees content of 20% in the fly ash-lees compound media was the optimum proportion for planting shamrock.