苦刺、鞍叶羊蹄甲和华西小石积是喀斯特山地的适生灌木树种,以咖啡壳、甘蔗渣、草碳、森林土等为基质原料配制成4种育苗基质,开展育苗对比试验,通过测定苗高、地径、主根长、根幅、一级侧根数、地上生物量、地下生物量共7个性状指,分析不同育苗基质对其苗木生长的影响。结果表明:不同育苗基质对3个树种苗木质量的影响不同,不同树种适应不同的育苗基质;不同育苗基质苗木生长的差异是树种生长特性、苗期生长规律及基质理化性状综合作用的结果;基于单一性状指标的表现及7个苗木生长指标隶属函数值计算结果,以有机废弃物咖啡壳为主要原料配制的1^#基质更适宜用作苦刺和鞍叶羊蹄甲的育苗基质,以甘蔗渣为主要原料配制的2^#基质则适宜用作华西小石积的育苗基质,同时2^#,3^#基质也可满足苦刺苗木生长的需求。

Solanum davidii,Bauhinia brachycarpa and Osteomeles schwerinae are shrub species adapted to karst mountainous area.Taking rotten coffee shell,rotten bagasse,peat and forest soil as components,four kinds of growing substrates were prepared and conducted in the seedling raising experiments on these three species.Seven parameters of tested seedlings including height,basal diameter,length of main root,width of root system,number of primary lateral roots,aboveground biomass and underground biomass were monitored and examined to analyze the effects of different growing substrates.It was found the effects of different substrates varied,and each species had its preferable growing substrate.The performance of seedling growing was the comprehensive results of plant species characteristics,seedling growing regular,physical and chemical aspects of growing substrate.Based on growing performance,and the calculation results of membership function of seven parameters,it was concluded that the growing substrate coded No.1 with rotten coffee shell as the main component was suitable for Solanum davidii,Bauhinia brachycarpa,the substrate coded No.2 with the rotten bagasse as the main component was suitable for Osteomeles schwerinae,and No.2 and No.3 (peat) were suitable for seedling raising of Solanum davidii.