富源县光皮桦天然实生苗造林试验

Experiment on Afforesting with Natural Seedlings of Betula luminifera in Fuyan County

通过天然实生苗造林试验证明,光皮桦适应性强,是优良速生的乡土树种。在玄武岩山地、石灰岩山地均能生长,年均地径生长1.16 cm,年均高生长0.8m。在土层深厚、土壤疏松、水肥条件较好的土地上生长极其显著,年均地径生长2 cm,年均高生长1.5m。经方差分析,栽植在退耕地内的光皮桦与栽植在玄武岩山地、石灰岩山地、对照地的光皮桦差异极显著。而栽植在玄武岩山地、石灰岩山地的光皮桦与对照地的光皮桦没有显著差异。

The experiment with natural seedlings proves that Betula luminifera with strong adaptability is excellent fast-growing indigenous tree species, which can grow in mountain areas of both basalt and limestone, in detail, 1.16 cm of annual average diameter growth and 0.8 m of average height growth. It shows remarkable growth which is expressed by 2 cm of annual average diameter growth and 1.5 m of annual average height growth under the favorable conditions of deep and soft soil, sufficient water and fertilizer. The variance analysis reveals that there are remarkable differences of Betula luminiferag growing in plot of returning grain and in basalt and limestone mountain areas, compared with Betula luminifera in contrast, but there is little difference of Betula luminifera in basalt and limestone mountain areas with the contrast.