Abstract: In order to develop a new soilless sod medium, six treatments were designed using the abandoned bedding of piggery and sand (T1: 90% sand+10% abandoned bedding; T2: 70% sand+30% abandoned bedding; T3: 50% sand+50% abandoned bedding; T4: 30% sand+70% abandoned bedding; T5: 90% sand+10% abandoned bedding; T6: 100% abandoned bedding; CK: soil) (volume ratio, the same as blow). The influences of abandoned bedding on the growth and drought resistance of tall fescue and perennial ryegrass were studied. Results indicated that the leaf breadth, chlorophyll and soluble protein contents of both lawn grasses grown in the medium added abandoned bedding are apparently higher than CK. The abandoned bedding could promote the growth of both lawn grasses. And the heavy metals of abandoned bedding did not hurt both lawn grasses. Drought resistance test showed that the water and nutritive element contents of abandoned bedding were higher than that of soil. So the abandoned bedding could reduce the effect of drought stress on turf grasses.

Key words: Abandoned bedding, Soilless medium, Heavy metals, Tall fescue, Perennial ryegrass, Drought resistance

摘要： 为开发利用猪舍废弃垫料使其成为无土草皮基质,试验以猪舍废弃垫料为原料,以体积比配制基质,设置6个处理:T1:90%纯沙+10%废弃垫料;T2:70%纯沙+30%废弃垫料;T3:50%纯沙+50%废弃垫料;T4:30%纯沙+70%废弃垫料;T5:10%纯沙+90%废弃垫料;T6:100%废弃垫料;以大田土壤为对照,以高羊茅(Festuca arundinace)和多年生黑麦草(Lolium perenne)为试验草种,研究废弃垫料对草坪草生长和抗旱性的影响。结果表明:添加废弃垫料的各基质,草坪草叶宽、叶绿素含量和可溶性蛋白均明显高于对照;废弃垫料明显促进草坪草生长,其在基质中所占比例越高,草坪草生长态势越好;废弃垫料中含有的重金属并未对草坪草产生毒害。抗旱试验表明,废弃垫料较大田土壤具有较高的持水能力和营养元素含量,在同等干旱水平下能维持草坪草正常生理代谢,缓解干旱胁迫对草坪草的影响。

关键词: 废弃垫料, 无土基质, 重金属, 高羊茅, 多年生黑麦草, 抗旱性