Scientia Silvae Sinicae ›› 2020, Vol. 56 ›› Issue (7): 175-184.doi: 10.11707/j.1001-7488.20200718
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Jundong Rong1,Lili Fan1,Liguang Chen1,Yinghui Zhang2,Tianyou He3,Lingyan Chen3,Kunpeng Song1,Yushan Zheng1,*
Received:
2018-12-17
Online:
2020-07-25
Published:
2020-08-11
Contact:
Yushan Zheng
CLC Number:
Jundong Rong,Lili Fan,Liguang Chen,Yinghui Zhang,Tianyou He,Lingyan Chen,Kunpeng Song,Yushan Zheng. Impacts on Biomass Allocation and Root Growth of Fokienia hodginsii Seedlings of Different Patterns and Quantities of Nitrogen Application[J]. Scientia Silvae Sinicae, 2020, 56(7): 175-184.
Table 1
Exponential nitrogen fertilization for each treatment of single plant mg"
施肥次数 Fertilizer time | 处理Treatment | ||||
E1 | E2 | E3 | E4 | E5 | |
1 | 5.21 | 7.25 | 8.57 | 9.56 | 10.36 |
2 | 5.98 | 8.75 | 10.67 | 12.17 | 13.42 |
3 | 6.88 | 10.56 | 13.28 | 15.50 | 17.39 |
4 | 7.90 | 12.75 | 16.54 | 19.73 | 22.54 |
5 | 9.07 | 15.39 | 20.59 | 25.12 | 29.21 |
6 | 10.42 | 18.58 | 25.63 | 31.99 | 37.85 |
7 | 11.98 | 22.43 | 31.91 | 40.73 | 49.04 |
8 | 13.76 | 27.07 | 39.72 | 51.85 | 63.56 |
9 | 15.81 | 32.68 | 49.45 | 66.02 | 82.36 |
10 | 18.16 | 39.45 | 61.57 | 84.05 | 106.73 |
11 | 20.86 | 47.62 | 76.64 | 107.02 | 138.31 |
12 | 23.97 | 57.48 | 95.41 | 136.25 | 179.24 |
总计Total | 150 | 300 | 450 | 600 | 750 |
Table 2
Effects of different fertilization modes and nitrogen application amount on the biomass allocation of single seedling of F. hodginsii"
处理 Treatments | 根Root | 茎Stem | 叶Leaf | 根冠比 | 总生物量 Total biomass/g | |||||
生物量 Biomass/g | 占总生物量比例 Proportion (%) | 生物量 Biomass/g | 占总生物量比例 Proportion (%) | 生物量 Biomass/g | 占总生物量比例 Proportion (%) | |||||
CK | 0.67±0.17c | 20.76 | 0.79±0.11c | 24.46 | 1.74±0.05f | 53.87 | 0.26±0.05b | 3.23±0.09f | ||
A1 | 0.69±0.09c | 20.32 | 0.86±0.16bc | 25.52 | 1.82±0.18ef | 54.01 | 0.26±0.01b | 3.37±0.18f | ||
A2 | 0.80±0.08bc | 20.49 | 0.90±0.19bc | 22.96 | 2.23±0.21cde | 56.89 | 0.26±0.04b | 3.92±0.05de | ||
A3 | 0.96±0.14abc | 22.71 | 0.93±0.08bc | 22.20 | 2.31±0.19bcd | 55.07 | 0.30±0.02b | 4.19±0.01c | ||
A4 | 1.08±0.15ab | 22.45 | 1.24±0.16bc | 25.78 | 2.48±0.21ab | 51.56 | 0.29±0.02ab | 4.81±0.20b | ||
A5 | 1.02±0.31abc | 21.82 | 1.10±0.29bc | 23.38 | 2.57±0.21abc | 54.80 | 0.28±0.12ab | 4.69±0.20b | ||
E1 | 0.78±0.05bc | 20.96 | 0.89±0.04bc | 23.80 | 2.06±0.11def | 55.08 | 0.26±0.02b | 3.74±0.10e | ||
E2 | 0.90±0.25bc | 22.40 | 0.93±0.20bc | 22.26 | 2.17±0.18bcde | 55.35 | 0.29±0.03b | 4.00±0.11cd | ||
E3 | 1.05±0.19ab | 22.87 | 1.28±0.20bc | 27.00 | 2.41±0.17ab | 50.84 | 0.28±0.04ab | 4.74±0.22b | ||
E4 | 1.17±0.23a | 23.14 | 1.39±0.11a | 27.42 | 2.51±0.19a | 50.51 | 0.30±0.05ab | 5.07±0.14a | ||
E5 | 1.05±0.05ab | 22.26 | 1.22±0.20ab | 25.79 | 2.46±0.26abc | 52.01 | 0.29±0.02b | 4.73±0.03b |
Table 3
Effects of different fertilization modes and nitrogen application amount on the root morphological traits of single seedling of F.hodginsii"
处理 Treatments | 总根长 Total root length/cm | 总根表面积 Total surface area/cm2 | 总根体积 Total volume of root/cm3 | 根平均直径 Root average diameter/cm | 比根长 Specific root length/(m·g-1) |
CK | 482.32±7.98g | 105.13±0.72g | 1.93±0.11f | 0.58±0.02e | 7.20±0.08cd |
A1 | 524.27±15.67fg | 113.04±4.25fg | 2.07±0.21f | 0.64±0.01d | 7.60±0.11cd |
A2 | 572.59±18.95f | 131.82±4.20e | 2.19±0.06ef | 0.66±0.02cd | 7.16±0.24bc |
A3 | 774.67±16.63d | 141.70±5.94 | 2.42±0.17e | 0.69±0.03bc | 8.07±0.05bc |
A4 | 903.65±43.46bc | 186.78±7.33b | 3.30±0.14ab | 0.72±0.03b | 8.37±0.35ab |
A5 | 788.22±12.27d | 161.80±6.87c | 2.72±0.05d | 0.68±0.01bcd | 7.73±0.12d |
E1 | 622.53±21.19e | 119.65±5.17f | 2.15±0.18f | 0.66±0.02cd | 7.98±0.16bc |
E2 | 770.27±4.37d | 164.92±10.65c | 2.77±0.11d | 0.67±0.03cd | 8.56±0.05bc |
E3 | 937.34±34.07b | 181.66±4.88b | 2.94±0.21d | 0.70±0.03b | 8.93±0.24bc |
E4 | 1 083.43±69.19a | 196.92±1.20a | 3.37±0.08a | 0.80±0.01a | 9.26±0.31ab |
E5 | 856.21±4.84c | 182.20±2.98b | 3.08±0.16bc | 0.71±0.02b | 8.15±0.09a |
Table 4
Correlation analysis of biomass and root morphological indexes of single seedling of F. hodginsii"
指标 Index | 根生物量 Root biomass | 地上生物量 Above ground biomass | 总生物量 Total biomass | 根冠比 Root shoot ratio | 总根长 Total root length | 总根表面积 Total surface area | 总根体积 Total volume of root | 根平均直径 Root average diameter | 比根长 Specific root length |
根生物量Root biomass | 1 | ||||||||
地上生物量 Above ground biomass | 0.977** | 1 | |||||||
总生物量Total biomass | 0.987** | 0.998** | 1 | ||||||
根冠比Root shoot ratio | 0.840** | 0.706* | 0.744** | 1 | |||||
总根长Total root length | 0.974** | 0.928** | 0.945** | 0.867** | 1 | ||||
总根表面积Total surface area | 0.960** | 0.940** | 0.951** | 0.800** | 0.957** | 1 | |||
总根体积Total volume of root | 0.948** | 0.918** | 0.932** | 0.806** | 0.950** | 0.987** | 1 | ||
根系平均直径 Root average diameter | 0.901** | 0.877** | 0.887** | 0.740** | 0.924** | 0.863** | 0.872** | 1 | |
比根长Specific root length | 0.778** | 0.692* | 0.721* | 0.807** | 0.896** | 0.811** | 0.809** | 0.812** | 1 |
Table 5
Lorentzian model and Paraboloid model to fit the growth relationship between roots biomass, height and basal diameter of single seedling of F. hodginsii"
处理 Treatment | 拟合模型 Fitting model | R2 | RSS | |
洛伦兹模型 Lorentzian model | CK | 0.844 | 0.818 | |
A1 | 0.790 | 0.840 | ||
A2 | 0.836 | 1.522 | ||
A3 | 0.845 | 1.384 | ||
A4 | 0.828 | 1.657 | ||
A5 | 0.809 | 1.318 | ||
E1 | 0.805 | 1.126 | ||
E2 | 0.808 | 1.707 | ||
E3 | 0.844 | 2.231 | ||
E4 | 0.861 | 2.446 | ||
E5 | 0.869 | 1.965 | ||
抛物面模型 Paraboloid model | CK | M= -9.296-0.775D + 0.424H-0.057D2 + 0.016H2 | 0.965 | 0.819 |
A1 | M= -14.268-0.207D + 7.937H-1.325D2 + 0.003H2 | 0.922 | 0.841 | |
A2 | M= -5.12-0.090D + 2.753H-0.444D2 + 0.001H2 | 0.964 | 0.597 | |
A3 | M= 11.384-0.586D-1.923H + 0.285D2 + 0.012H2 | 0.979 | 0.749 | |
A4 | M= 1.243-0.378D + 2.944H-0.474D2 + 0.007H2 | 0.947 | 0.658 | |
A5 | M= -11.156 + 0.973D-1.365H + 0.158D2-0.016H2 | 0.950 | 0.322 | |
E1 | M= -3.425-0.143D + 3.637H-0.574D2 + 0.003H2 | 0.935 | 0.127 | |
E2 | M= -4.291 + 0.528D-1.532H + 0.264D2-0.009H2 | 0.946 | 0.708 | |
E3 | M= 8.37-0.476D-0.802H + 0.143D2 + 0.009H2 | 0.978 | 0.234 | |
E4 | M= 5.912-0.267D-0.719H + 0.114D2 + 0.005H2 | 0.970 | 0.449 | |
E5 | M= -10.551 + 0.086D + 5.908H-0.902D2-0.001H2 | 0.962 | 0.465 |
Table 6
Principal component analysis of biomass and root morphology indexes of single seedlings of F. hodginsii under different nitrogen application modes and rates"
成分 Composition | 根生物量 Root biomass | 地上生物量 Above ground biomass | 总生物量 Total biomass | 根冠比 Root shoot ratio | 总根长 Total root length | 总根表面积 Total surface area | 总根体积 Total volume of root | 根平均直径 Root average diameter | 比根长 Specific root length | 特征值 Eigenvalue | 方差贡献率 Variance contribution rate(%) | 累积方差贡献率 Cumulative variance contribution rate(%) |
1 | 0.987 | 0.950 | 0.965 | 0.858 | 0.994 | 0.976 | 0.970 | 0.928 | 0.859 | 8.022 | 89.133 | 89.133 |
2 | -0.110 | -0.298 | -0.248 | 0.377 | 0.070 | -0.075 | -0.047 | -0.014 | 0.431 | 0.503 | 5.589 | 94.721 |
3 | -0.090 | -0.009 | -0.029 | -0.325 | 0.033 | -0.038 | -0.031 | 0.258 | 0.232 | 0.239 | 2.653 | 97.374 |
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