Comparison on the Substrate and Container Size of Container Nursery of Schima superba

MA Xue-hong; HU Gen-chang; FENG Jian-guo; ZHOU Zhi-chun

An experiment with factorial design was conducted to investigate the effects of substrate composition, slow release fertilizers, and container size on seedling growth and quality of Schima superba. The seedling height and ground diameter were promoted by high peat percent in substrate, whereas the root:shoot ratio (RSR) was reduced. The application of 2.5 kg·m-3 slow release fertilizers had little effect on the above-ground part of plants and the RSR. In contrast, the root growth was inhibited with the increased amount of slow release fertilizers. The plant height and ground diameter were promoted and the RSR decreased by larger container size. Based on the seedlings quality and cost, the optimal regime may be substrate composition with peat∶ bran=7∶ 3, 2.5 kg·m-3 of slow release fertilizers, combined with container of 5.5 cm×10 cm dimensions. The statistical analysis revealed that quality of container seedlings was affected by substrate composition, slow release fertilizers, as well as container size. The interactions were also found among the three main effects, thus it is possible to properly adjust the application of slow release fertilizers and container size according to the substrate composition so as to produce low cost and high quality container seedlings.

1. Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Fuyang 311400, Zhejiang, China

2. Longquan Institute of Forestry, Longquan 323700, Zhejiang, China)

Abstract: An experiment with factorial design was conducted to investigate the effects of substrate composition, slow release fertilizers, and container size on seedling growth and quality of Schima superba. The seedling height and ground diameter were promoted by high peat percent in substrate, whereas the root:shoot ratio (RSR) was reduced. The application of 2.5 kg·m-3 slow release fertilizers had little effect on the above-ground part of plants and the RSR. In contrast, the root growth was inhibited with the increased amount of slow release fertilizers. The plant height and ground diameter were promoted and the RSR decreased by larger container size. Based on the seedlings quality and cost, the optimal regime may be substrate composition with peat∶ bran=7∶ 3, 2.5 kg·m-3 of slow release fertilizers, combined with container of 5.5 cm×10 cm dimensions. The statistical analysis revealed that quality of container seedlings was affected by substrate composition, slow release fertilizers, as well as container size. The interactions were also found among the three main effects, thus it is possible to properly adjust the application of slow release fertilizers and container size according to the substrate composition so as to produce low cost and high quality container seedlings.

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Reference (13)

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Comparison on the Substrate and Container Size of Container Nursery of Schima superba

Abstract

References

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通讯作者: 陈斌, bchen63@163.com

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