煤矸石充填复垦土壤水分含量与作物有效性的研究

Moisture Content of Reclaimed Soil Filled with Coal Gaugue and Its Validation of Crops

通过室内煤矸石充填复垦土壤盆栽试验,监测有无地下水补给和不同覆土厚度处理的表层土壤含水量、小麦出芽率与地上部生物量等指标,研究煤矸石充填复垦土壤水分的作物有效性。结果表明:表层土壤含水量在有地下水补给时相对较高,且覆土厚度影响小麦出芽率;当无地下水补给时,表土含水量受覆土厚度的影响较明显,3种处理中覆土厚度为10 cm时表土含水量最高,小麦出芽率受土壤含水量的影响较小。在拔节前期,地上部小麦生物量与出芽率呈显著地正相关关系。

Topsoil moisture content,bud ratio and aboveground biomass of wheat were measured by the pot experiments of reclaimed soils filled coal gaugue,setting different groundwater table and topsoil thickness to study the crop validation of water content.The results show that soil moisture content is relatively high under the groundwater table,and bud ratio of wheat is affected on topsoil thiokness.Under no groundwater,topsoil thickness will affect on soil moisture content,and moisture content of topsoil thickness 10 cm is highest form three different experimental treatments,which bud ratio of wheat is less affected on topsoil water contents.At the early stage of wheat growth,the correlation between aboveground biomass and bud ratio of wheat is positively remarkable.