3种乡土地被植物的营养繁殖研究

Vegetative propagation of three nativeground cover plants

摘要:

研究了酢浆草、链荚豆、丁癸草3种乡土地被植物的嫩枝和匍匐茎在3种不同基质上的扦插和撒植繁殖效果。结果表明:相同茎质下3种植物采用嫩枝扦插的成活率均高于匍匐茎撒植,采用嫩枝扦插与匍匐茎撒植的成活率高低规律一致,且酢浆草成活率最高,链荚豆成活率最低;不同基质酢浆草、链荚豆在纯沙中营养体繁殖的成活率较高,根系生长状况较好;丁癸草在珍珠岩+蛭石1∶2的混合基质中营养体繁殖的成活率较高,根系生长状况较好;但3种植物营养体材料在砖红壤中繁殖成活率均较低。试验表明3种植物可通过营养体繁殖快速育苗。

Abstract:

In order to find out the low maintenance cost ornamental ground cover plants,the performance of3 native ground cover plants (Oxalis corniculata,Zornia gibbosa and Alysicarpus vaginalis) sowing in 3 typesof substrate (sand,mixed substrate of perlite and vermiculite with 1∶2 volume ratio,and laterite) by shoot cuttingand stem were studied.The result showed that the survival rate of all species propagated by shoot cuttingwas higher than that by stolon sowing,with the highest ratio of O.corniculata and lowest of A .vaginalis.Three species had different performance in three substrate.O.corniculata and A .vaginalis had greater survivalrate and better root growth in sand while Z.gibbosa had better performance in mixed substrate.But all 3 specieshad the lowest survival rates in laterite.The seedling of 3 species could be rapidly obtained through vegetativepropagation technique