Scientia Silvae Sinicae ›› 2021, Vol. 57 ›› Issue (3): 152-160.doi: 10.11707/j.1001-7488.20210316
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Minghui Sun1,2,Yong Liu1,*,Changwei Wang1,Guolei Li1,Miaomiao Wang1,Xiehai Song1,Xiaochao Chang1,Fangfang Wan1,Huaishan Song3
Received:
2020-01-02
Online:
2021-03-25
Published:
2021-04-07
Contact:
Yong Liu
CLC Number:
Minghui Sun,Yong Liu,Changwei Wang,Guolei Li,Miaomiao Wang,Xiehai Song,Xiaochao Chang,Fangfang Wan,Huaishan Song. Effects of Density and Row Spacing on the Quality of Populus tomentosa Seedling[J]. Scientia Silvae Sinicae, 2021, 57(3): 152-160.
Table 1
Different treatments of density and row spacing"
处理编号 No. | 密度 Density/(seedling·hm-2) | 栽植模式 Planting pattern | 处理 Treatments | 株距 Plant spacing/m | 行距 Row spacing /m |
1 | 50 000(A1) | 行状配置B1 Uniform row B1 | A1B1 | 0.25 | 0.8+0.8 |
2 | 带状配置B2 Narrow-wide rows B2 | A1B2 | 0.25 | 0.6+1.0 | |
3 | 带状配置B3 Narrow-wide rows B3 | A1B3 | 0.25 | 0.4+1.2 | |
4 | 41 667(A2) | 行状配置B1 Uniform row B1 | A 2B1 | 0.3 | 0.8+0.8 |
5 | 带状配置B2 Narrow-wide rows B2 | A2B2 | 0.3 | 0.6+1.0 | |
6 | 带状配置B3 Narrow-wide rows B3 | A2B3 | 0.3 | 0.4+1.2 | |
7 | 31 250(A3) | 行状配置B1 Uniform row B1 | A3B1 | 0.4 | 0.8+0.8 |
8 | 带状配置B2 Narrow-wide rows B2 | A3B2 | 0.4 | 0.6+1.0 | |
9 | 带状配置B3 Narrow-wide rows B3 | A3B3 | 0.4 | 0.4+1.2 |
Table 2
P value derived from ANOVA of main effects of density (A) and row spacing (B) and their interaction on growth indexes attributes of P. tomentosa seedlings"
变异来源 Variance source | df | 苗高 Seedling height | 地径 Collar diameter | 叶生物量 Leaf biomass | 茎生物量 Stem biomass | 根生物量 Root biomass | 总生物量 Total biomass | 茎根比 Stem to root |
密度 Density(A) | 2 | <0.001** | 0.013* | 0.652 | <0.001** | 0.039* | 0.001** | 0.021* |
行距配置 Row spacing(B) | 2 | <0.001** | 0.045* | 0.012* | 0.002** | <0.001** | <0.001** | <0.001** |
密度×行距配置 Density × row spacing | 4 | 0.036* | 0.423 | 0.072 | 0.566 | 0.025* | 0.026* | 0.055 |
Table 3
Main effects of density(A) and row spacing(B) on collar diameter, leaf biomass, stem biomass and stem to root of P. tomentosa seedlings (mean ± SD)"
项目 Item | 处理 Treatment | 地径 Collar diameter /mm | 叶生物量 Leaf biomass/g | 茎生物量 Stem biomass/g | 茎根比 Stem to root |
密度 Density | A1 | 19.55±0.81b | 43.67±2.30a | 105.77±9.14b | 1.25±0.28a |
A2 | 20.38±0.90a | 43.54±5.91a | 121.40±7.95a | 1.29±0.21a | |
A3 | 19.56±0.63b | 44.72±3.12a | 107.18±4.94b | 1.09±0.17a | |
行距配置 Row spacing | B1 | 19.40±0.86b | 41.43±4.65a | 105.97±8.64b | 1.38±0.27a |
B2 | 19.94±0.72ab | 44.76±2.68a | 111.97±8.05ab | 1.14±0.15b | |
B3 | 20.16±0.87a | 45.74±3.31a | 116.42±11.62a | 1.10±0.16b |
Table 4
P values derived from ANOVA of main effects of density (A) and row spacing (B) and their interaction on nutrient attributes of P. tomentosa seedlings"
变异来源 Variance source | df | 氮N | 磷P | 钾K | ||||||||
叶Leaf | 茎Stem | 根Root | 叶Leaf | 茎Stem | 根Root | 叶Leaf | 茎Stem | 根Root | ||||
密度Density | 22 | <0.001** | <0.001** | 0.009** | 3.178 | 3.321 | 1.286 | 0.182 | 0.321 | 0.191 | ||
行距配置Row spacing | 22 | <0.001** | <0.001** | <0.001** | 0.356 | 0.735 | 3.033 | 0.770 | 0.674 | 0.063 | ||
密度×行距配置 Density × row spacing | 24 | 0.049* | 0.933 | 0.935 | 1.026 | 0.903 | 0.673 | 1.245 | 1.243 | 1.320 |
Table 5
P values derived from ANOVA of main effects of density (A) and row spacing (B) and their interaction on LI and LAI of P. tomentosa seedlings"
变异来源 Variance source | df | 光截获 Light interception(LI) | 叶面积指数 Leaf area index(LAI) |
密度 Density | 2 | 0.178 | 0.160 |
行距配置 Row spacing | 2 | <0.001** | 0.010** |
密度×行距配置 Density×row spacing | 4 | 0.814 | 0.755 |
Table 6
Relationship of the effects of light interception and seedling height, collar diameter stem to root and biomass of P. tomentosa seedlings"
项目Item | 苗高 Seedling height/cm | 地径 Collar diameter/cm | 地上生物量 Aboveground biomass/g | 地下生物量 Underground biomass/g | 茎根比 Stem to root | 生物量 Biomass/g |
关系式 Relational expression | y=157.16x+132.63 | y=5.43x +15.35 | y=93.56x+78.17 | y=172.63x-9.72 | y=-1.22x+2.21 | y=266.19x+68.45 |
决定系数Coefficient of determination(R2) | 0.27 | 0.21 | 0.350 | 0.273 | 0.145 | 0.408 |
P | 0.001** | 0.005** | <0.001** | 0.001** | 0.022 | <0.001** |
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