几种草本植物对污泥堆肥的生长响应

The Growth Response of Some Kinds of Herbs to Sludge Compost

３种花卉（旱荷花、美人蕉及龟背竹）和５种草坪草（黑麦草、紫羊茅、葡枝翦股颖、马尼拉草及白三叶）施用污泥堆肥后，花卉的开花时间提前、花期延长，开花量增加；草坪草的生物量增大，绿色期延长等；土壤理化性质有明显改善。长期施用该污泥堆肥，不会造成Ｃｄ、Ｈｇ对园林植物的毒害；当污泥堆肥施用量小于９ｋｇ／ｍ￣２时，无ＮＯ￣3－Ｎ淋溶及地面径流造成的环境问题。

After the application of sludge compost,signifieant increment in bloom-ing period,blooming date and flower number was observed in such flowers as nasturtium(Tropaeolum majus L.),Canna(C,india L.)and Ceriman(Monstera deliciosa Liebm)and remarkable improvement in bioinass,green period and soil physical-chemical behav-ior was detected in such lawn grasses as euphorbia(P.quinquefolia Planch),ryegrass(Lolium perenne L,), fescue(Festuca rubra L.),bentgrass(Agrostis stolonifera L.),white clover(Trifolium repens L.)and Manila grass(Zoysia japonia Steud).Both Cdand Hg in the sludge compost had little toxicity to plants.When the sludge compost ap-plication rates did not exceed 9.0 kg/m￣2,there vvas no nitrate leaching and runoff-in-duced pollution problems.