Page 179 - 《广西植物》2025年第6期
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6 期 文程敬等: 云南松幼苗生长及化学计量对遮阴和干旱互作的响应 1 1 6 5
表 1 不同遮阴和干旱处理下云南松幼苗苗高、地径和生物量及生物量分配变化情况
Table 1 Changes in seedling heightꎬ ground diameterꎬ biomass and biomass allocation of
Pinus yunnanensis seedlings under different shade and drought treatments
叶生物量 茎生物量 粗根生物量 细根生物量
地径增量
苗高增量 生物量增量 增量 增量 增量 增量
遮阴水平 干旱胁迫程度 Increment of
Increment of Increment Increment Increment of Increment Increment
Shade level Drought stress ground
seedling height of biomass of leaf stem of coarse of fine
(%) degree diameter
(cm) (g) biomass biomass root biomass root biomass
(mm)
(g) (g) (g) (g)
0 CK 3.46±0.12a 2.53±0.17b 5.70±0.23b 1.93±0.19e 0.97±0.25d 0.23±0.17b 0.13±0.09e
LD 3.29±0.12a 4.53±0.17a 6.50±0.23a 5.33±0.19b 2.73±0.25a 0.77±0.17ab 1.03±0.09a
MD 1.74±0.12c 1.31±0.17d 4.70±0.23cd 4.17±0.19c 2.3±0.25ab 0.63±0.17ab 0.40±0.09de
SD 1.67±0.12c 0.30±0.17e 4.50±0.23cd 3.13±0.19d 1.23±0.25cd 0.57±0.17ab 0.57±0.09cd
70 CK 2.58±0.12bc 1.72±0.17cd 3.10±0.23ef 5.93±0.19a 2.17±0.25ab 0.93±0.17a 0.63±0.09bcd
LD 2.85±0.12b 2.46±0.17b 4.10±0.23cd 5.97±0.19a 2.43±0.25ab 0.73±0.17ab 0.90±0.09ab
MD 2.88±0.12b 0.68±0.17e 3.40±0.23ef 5.8±0.19ab 1.87±0.25bc 1.07±0.17a 1.00±0.09a
SD 2.76±0.12b 0.53±0.17e 3.20±0.23ef 6.07±0.19a 1.80±0.25bc 0.63±0.17ab 0.37±0.09de
注: 不同字母表示同一遮阴水平下不同干旱处理间差异显著(P<0.05)ꎮ
Note: Different letters indicate significant differences between different drought treatments at the same shade level (P<0.05).
表 2 不同遮阴和干旱处理下对云南松幼苗化学计量的双因素方差分析(F 值)
Table 2 Two ̄way ANOVA of different shade and drought treatments on the
stoichiometry of Pinus yunnanensis seedlings (F value)
遮阴水平 × 干旱胁迫程度
元素 器官 遮阴水平 干旱胁迫程度
Shade level ×
Element Organ Shade level Drought stress degree
Drought stress degree
碳 C 叶 Leaf 19.092∗∗ 8.600∗ 14.830∗∗
茎 Stem 0.350 1.432 0.085
粗根 Coarse root 0.456 5.029∗ 1.678
细根 Fine root 1.584 10.510∗∗ 1.109
氮 N 叶 Leaf 23 275.278∗∗ 9 068.252∗∗ 11 857.740∗∗
茎 Stem 705 978.426∗∗ 139 767.287∗∗ 52 006.629∗∗
粗根 Coarse root 16.332∗∗ 7.757∗ 2.008
细根 Fine root 473 705.455∗∗ 1 348 876.074∗∗ 725 308.124∗∗
磷 P 叶 Leaf 85.056∗∗ 11 058.038∗∗ 23 917.182∗∗
茎 Stem 458 937.563∗∗ 1 056 672.690∗∗ 499 956.479∗∗
粗根 Coarse root 32 482.095∗∗ 59 738.465∗∗ 86 601.943∗∗
细根 Fine root 71.799∗∗ 80.279∗∗ 48.486∗∗
碳 ∶ 氮 C ∶ N 叶 Leaf 49.982∗∗ 11.865∗∗ 21.897∗∗
茎 Stem 375.472∗∗ 54.692∗∗ 19.235∗∗
粗根 Coarse root 85.585∗∗ 32.855∗∗ 86 601.943∗∗
细根 Fine root 85.290∗∗ 65.335∗∗ 66.237∗∗
碳 ∶ 磷 C ∶ P 叶 Leaf 94.434∗∗ 167.423∗∗ 323.544∗∗
茎 Stem 221.072∗∗ 374.286∗∗ 76.985∗∗
粗根 Coarse root 1.749 284.017∗∗ 388.729∗∗
细根 Fine root 0.651 3.268∗ 2.740
氮 ∶ 磷 N ∶ P 叶 Leaf 117.545∗∗ 1 206.526∗∗ 1 994.609∗∗
茎 Stem 1 010 770.986∗∗ 722 977.533∗∗ 296 797.070∗∗
粗根 Coarse root 4.529∗ 24.625∗∗ 13.716∗∗
细根 Fine root 3.138 1.578 2.747
注: 遮阴水平、干旱胁迫程度及其交互作用对云南松幼苗各器官的影响ꎮ ∗ 表示 P<0.05ꎻ∗∗表示 P<0.01.
Note: Effects of shade levelꎬ drought stress degree and their interaction on each organ of Pinus yunnanensis seedlings. ∗ indicates P<
0.05ꎻ∗∗ indicates P<0.01.

