【摘要】 为探讨不同配比的城市堆肥污泥基质对高羊茅和紫花苜蓿2种草本植物生长的促进作用,用盆栽对比试验,将其与砂质土壤按不同比例混合,作为高羊茅和紫花苜蓿的生长基质,比较不同配比城市堆肥污泥对高羊茅和紫花苜蓿生长的影响。结果表明:堆肥污泥的添加改善了土壤的理化性质,显著提高了高羊茅和紫花苜蓿的出苗率、株高、生物量以及氮肥、钾肥的表观利用率。20%比例的污泥对高羊茅生长的促进效果最佳,30%比例的污泥对紫花苜蓿促进效果最佳。将污泥堆肥化后以一定比例添加入矿区土壤可促进当地植被的恢复,建议堆肥污泥的添加比例以20%~30%为宜。更多还原

【Abstract】 In order to explore the effect of different proportions of sludge treatment on the growth of Festuca arundinacea and Medicago sativa,pot incubation test with the different proportions of the sewage sludge and sandy soil was used to compare the growth of the two herbs. The results showed that the application of sewage sludge ameliorates the soil physical and chemical properties and improves the seedling emergence rates,height growth,biomass and the appearance utilization rate of nitrogen and potassium. 20 percent of the sewage sludge compost has the best promoting effect of the growth of Festuca arundinacea,30 percent of the sewage sludge compost is best for the growth of Medicago sativa. This study illustrates the feasibility of adding sewage sludge compost with a certain proportion to ameliorate the mine soil,and the proportion of the sewage sludge compost should be 20%-30% for restoring vegetation effectively.更多还原