无柄小叶榕等3种优良树种容器育苗方案优选

为筛选出适宜无柄小叶榕、浙江樟及木荷生长发育的容器育苗方案,本文采用析因设计进行了基质、容器袋规格及缓释肥用量对2年生无柄小叶榕、浙江樟和木荷容器苗生长影响的研究。研究表明基质配比对3种树种2年生容器苗的生长影响不明显,但无柄小叶榕和浙江樟2年生容器苗生长对基质配比较木荷敏感；容器规格对3种2年生容器苗生长影响显著,均以18cm*18cm的无纺布容器袋最佳；2年生无柄小叶榕容器苗苗高和地径随着缓释肥施用量的增加而显著增加,浙江樟和木荷在缓释肥2.0kg.m-3时苗高或地径生长量最大,超过这一施肥量时生长有所下降；各因素间的交互效应基本上都达到显著水平,综合各因素对生长的主效应和互作效应,为3个优良造林树种各选出3-5种优化的容器育苗方案。

Scheme Optimization of Containerized Seedlings of Ficus concinna var. subsessilis,Cinnamomum japonicum and Schima superba

To screen out the containerized seedling scheme suitable for the growth and development of Ficus concinna var. subsessilis, Cinnamomum japonicum and Schima superba, the factorial design was used to study the effects of the matrix, container specs and slow release fertilizer dosage on the growth of 2- year- old container seedlings of Ficus concinna var. subsessilis, Cinnamomum japonicum and Schima superba. Studies showed that the matrix ratio had no obvious effect on the growth of the 2-year-old container seedlings of the three tree species, but the growth of the container seedlings of Ficus concinna var. subsessilis and Cinnamomum japonicum was sensitive to the matrix. The container spec had a significant effect on the growth of the container seedlings, and the best effect was achieved by 18 cm× 18 cm non-woven container bag. The seedling height and ground diameter of the Ficus concinna var. subsessilis container seedlings increased significantly with the increase of slow-release fertilizer application. Cinnamomum japonicum and Schima superba had the highest seedling height and ground diameter growth when the slow-release fertilizer was 2.0 kg/m3 and the growth decreased when the slow release fertilizer dosage exceeded 2.0 kg/m3. The interaction between various factors basically reached significant level. Comprehensively considering the main effect and interaction effect of all factors, three to five kinds of optimization scheme for containerized seedlings were selected for afforestation of the tree species.