| 摘要: |
| 为总结岗梅 Ilex asprella 林下套种技术, 在海拔 325 ~ 405 m 的林地上, 对不同林冠层郁闭度、
坡位的杉木 Cunninghamia lanceolata 和马尾松 Pinus massoniana 林下套种 2 a 生岗梅进行了生长调查和对
比分析。 结果表明, 林冠层郁闭度对林下套种的岗梅生长具有极显著影响 (P<0. 01), 杉木和马尾松林下
套种岗梅生长最佳郁闭度均为 0. 30~0. 49, 在郁闭度为 0. 30~ 0. 70 时, 随着郁闭度的上升, 岗梅的地径、
树高、 冠幅、 萌枝数、 主根长、 侧根长、 根幅逐渐降低。 岗梅生物量随着郁闭度的增大而显著减小 (P<
0. 01), 根比重随着郁闭度的增加而增加, 枝杆比重随着郁闭度的增加而减少。 在海拔大于 300 m, 坡度
大于 20°时, 不同坡位对林下套种岗梅地上部分和地下部分的生长也具有极显著影响 (P<0. 01), 下坡位
种植的岗梅生长最好, 上坡位最差。 生物量从高到低为下坡、 中坡、 上坡。 根的整株占比为下坡最小,
上坡最大; 枝杆的整株占比下坡最大, 上坡最小; 叶的整株占比变化不明显。 不同郁闭度和坡位的杉木
和马尾松林下套种岗梅, 其根、 茎、 叶鲜质量分别占单株鲜质量的 24% ~ 30%、 60% ~ 65%和 9% ~ 11%。
在杉木和马尾松林下选择郁闭度小于 0. 5 的中下坡套种岗梅可获得较高的收成。 |
| 关键词: 杉木 马尾松 套种 岗梅 |
| DOI： |
| 分类号: |
| 基金项目:三明市林业局科技项目 (明林函 【2024】 48 号), 福建省林业科技项目 (闽林科便函 【2025】 14 号)。 |
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| Effects of Different Canopy Closure Degrees and Slope Positions on Ilex asprella Interplanted Under Cunninghamia lanceolata and Pinus massoniana Forests |
|
Zhang Fayou
|
|
Fujian Qingliu State-owned Forest Farm,Qingliu
|
| Abstract: |
| To summarize the understory interplanting technology of Ilex asprella, the growth indicators of
2-year-old I. asprella interplanted under Cunninghamia lanceolata and Pinus massoniana forests with different
canopy closure degrees and slope positions were investigated and comparatively analyzed in forest lands at an altitude of 325- 405 m. The results showed that the canopy closure degree had a highly significant effect ( P <
0. 01) on the growth of I. asprella interplanted under the forest. The optimal closure degrees for the growth of
I. asprella interplanted under C. lanceolata and P. massoniana forests were both 0. 30-0. 49. within the closure
degree of 0. 3-0. 7, the ground diameter, tree height, crown width, number of sprouting branches, main root
length, lateral root length, and root width of I. asprella gradually decreased with increasing closure. At an altitude of more than 300 m and a slope greater than 20°, different slope positions also had a very significant impact
(P<0. 01) on the growth of aboveground and underground parts of I. asprella interplanted under the forest. I. asprella planted at the lower slope position grew best, and the upper slope position was the worst. The biomass of I. asprella from high to low was lower slope, middle slope, and upper slope. The root proportion was
the smallest on the lower slope and the largest on the upper slope, and the smallest on the upper slope. The proportion of leaves did not change significantly. The average fresh weight of roots, stems and leaves of I. asprella
accounted for 24%-30%, 60%-65% and 9%-11% of the total fresh mass of plants, respectively. Interplanting
I. asprella on the middle and lower slopes with a closure degree less than 0. 5 under C. lanceolata and
P. massoniana forests can obtain higher yields. |
| Key words: Ilex asprella interplanting mode growth characteristics |
