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无纺布覆盖和施肥对云南松人工幼林生长的影响

Effects on non-woven mulching and fertilization to tree growth of a Juvenile Pinus yunnanensis plantation

  • 摘要: 为优化云南松人工林培育技术,助力高效造林生产与相关技术研究,本研究以昆明市宜良县禄丰村林场尖山林区云南松幼林为对象,采用L16(45)正交试验,在1 m×2 m×4 m非均匀造林密度下,探究无纺布覆盖、施肥措施对幼林生长及杂草防控的影响。结果表明:造林12、16个月,各处理地径分别为13.0~17.1 mm、14.9~21.4 mm,造林3、12、16个月树高分别为4.0~6.4 cm、16.2~26.1 cm、17.4~31.0 cm,各生长指标处理间差异均达极显著水平(P<0.01)。施肥量是地径生长的主要影响因子,肥料种类与施肥量主导树高生长,各生长阶段最优处理组合不同,幼林地径与树高协同生长。结论:无纺布覆盖结合施肥可显著促进云南松幼林生长,可作为其人工幼林高效培育的关键技术措施。

     

    Abstract: To optimize the cultivation techniques of Yunnan pine artificial forests and facilitate efficient afforestation production and related technical research, This study took the young forests of Pinus yunnanensis in Jianshan Forest Area, Lufeng Village Forest Farm, Yiliang County, as the research object. An L16(45) orthogonal test was adopted. Under a non-uniform afforestation density of 1 m×2 m×4 m, the effects of non-woven fabric covering and fertilization measures on the growth of young forests and weed control were explored.The results show that After 12 and 16 months of afforestation, the ground diameters of each treatment were 13.0-17.1 mm and 14.9-21.4 mm respectively, and the tree heights at 3, 12 and 16 months of afforestation were 4.0-6.4 cm, 16.2-26.1 cm and 17.4-31.0 cm respectively. The differences among each growth index treatment reached an extremely significant level(P<0.01). The amount of fertilizer applied is the main influencing factor for ground diameter growth. The type of fertilizer and the amount of fertilizer applied dominate tree height growth. The optimal treatment combinations vary at different growth stages. In young forest land, ground diameter and tree height grow in coordination. Conclusion: non-woven fabric covering combined with fertilization can significantly promote the growth of young Yunnan pine forests and can be used as a key technical measure for the efficient cultivation of its artificial young forests.

     

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