植物生态学报 ›› 2008, Vol. 32 ›› Issue (1): 189-196.DOI: 10.3773/j.issn.1005-264x.2008.01.022
收稿日期:
2007-05-10
接受日期:
2006-08-27
出版日期:
2008-05-10
发布日期:
2008-01-30
通讯作者:
周志春
作者简介:
* E-mail: zczhou@fy.hz.zj.cn基金资助:
MA Xue-Hong, ZHOU Zhi-Chun*(), ZHANG Yi, JIN Guo-Qing
Received:
2007-05-10
Accepted:
2006-08-27
Online:
2008-05-10
Published:
2008-01-30
Contact:
ZHOU Zhi-Chun
摘要:
构建异质和同质两种养分环境,选择3个杉木(Cunninghamia lanceolata)优良家系作试验材料,并以马尾松(Pinus massoniana)为参照,通过量化分析不同养分环境中植株生长量、干物质积累和分配、根系形态、养分吸收和利用效率等,研究杉木家系对异质养分环境的适应性反应差异。结果表明,3个杉木参试家系对不同养分环境的生长反应差异显著,‘锦屏45’家系在异质养分环境中苗高生长量大、干物质积累量多、根系发达,而‘龙15’和‘靖398’两个家系则在同质养分环境中表现较好。杉木不同家系的根系均主要在异质养分环境之贫养斑块中大量增生,根系形态可塑性与觅养精确性较低。作为参照的马尾松,对异质养分环境反应敏感,根系广布性大、觅养精确性高。在3个参试杉木家系中,‘龙15’和‘靖398’对异质养分环境的生长反应敏感度低,根系生理可塑性一般,而‘锦屏45’对异质养分环境的生长反应敏感度较高,根系生理可塑性较高。试验观测到不同杉木家系在异质养分环境中根系N、P、K吸收效率通常低于同质养分环境。在富养斑块中的根系养分吸收效率明显低于贫养斑块,这与马尾松在富养斑块中根系养分吸收效率较高有很大的差异。然而杉木家系在富养斑块中根系的养分含量却不同程度地高于贫养斑块或与之相近。‘锦屏45’家系在异质环境中生长表现显著地优于同质养分环境,除因其具有较高的根系生理可塑性外,还与较多比例的干物质和营养元素分配至地上部分、根冠比较少有关。
马雪红, 周志春, 张一, 金国庆. 杉木不同家系对异质养分环境的适应性反应差异. 植物生态学报, 2008, 32(1): 189-196. DOI: 10.3773/j.issn.1005-264x.2008.01.022
MA Xue-Hong, ZHOU Zhi-Chun, ZHANG Yi, JIN Guo-Qing. DIFFERENCES OF ADAPTABILITY AMONG CUNNINGHAMIA LANCEOLATA VARIETIES TO HETEROGENEOUS NUTRIENT ENVIRONMENT. Chinese Journal of Plant Ecology, 2008, 32(1): 189-196. DOI: 10.3773/j.issn.1005-264x.2008.01.022
养分环境 Nutrient environment | 家系 Family | 苗高 Seedling height (cm) | 干物质积累量 Dry matter accumulation (g) | 根冠比 Root-shoot ratio |
---|---|---|---|---|
异质Heterogeneity | ‘龙15’ Long15 | 20.8(2.7) | 2.809 1(0.931 3) | 0.520 0(0.144 8) |
‘锦屏45’ Jinping45 | 17.3(3.0) | 2.737 1(0.763 1) | 0.353 4(0.156 9) | |
‘靖398’ Jing398 | 14.7(3.7) | 2.699 1(0.753 3) | 0.518 5(0.178 8) | |
显著性水平Probability (p) | 0.000 3 | <0.000 1 | 0.052 7 | |
同质Homogeneity | ‘龙15’ Long15 | 24.0(3.6) | 4.107 7(0.418 0) | 0.411 7(0.086 3) |
‘锦屏45’ Jinping45 | 12.1(3.4) | 1.900 8(0.836 4) | 0.470 3(0.240 8) | |
‘靖398’ Jing398 | 15.3(3.9) | 3.459 3(0.650 2) | 0.341 6(0.119 3) | |
显著性水平Probability (p) | 0.000 2 | 0.011 8 | 0.123 9 | |
显著性水平Probability (p) | 0.655 4 | 0.655 4 | 0.001 8 | |
异质Heterogeneity | 马尾松Pinus massoniana | 19.7(4.9) | 1.713 5(0.519 9) | 0.311 6(0.127 8) |
同质Homogeneity | 12.0(2.9) | 0.744 1(0.413 5) | 0.496 0(0.267 3) |
表1 不同养分环境下杉木家系生长和干物质积累量
Table 1 Differences in growth and dry matter accumulation between the heterogeneous and homogeneous environments
养分环境 Nutrient environment | 家系 Family | 苗高 Seedling height (cm) | 干物质积累量 Dry matter accumulation (g) | 根冠比 Root-shoot ratio |
---|---|---|---|---|
异质Heterogeneity | ‘龙15’ Long15 | 20.8(2.7) | 2.809 1(0.931 3) | 0.520 0(0.144 8) |
‘锦屏45’ Jinping45 | 17.3(3.0) | 2.737 1(0.763 1) | 0.353 4(0.156 9) | |
‘靖398’ Jing398 | 14.7(3.7) | 2.699 1(0.753 3) | 0.518 5(0.178 8) | |
显著性水平Probability (p) | 0.000 3 | <0.000 1 | 0.052 7 | |
同质Homogeneity | ‘龙15’ Long15 | 24.0(3.6) | 4.107 7(0.418 0) | 0.411 7(0.086 3) |
‘锦屏45’ Jinping45 | 12.1(3.4) | 1.900 8(0.836 4) | 0.470 3(0.240 8) | |
‘靖398’ Jing398 | 15.3(3.9) | 3.459 3(0.650 2) | 0.341 6(0.119 3) | |
显著性水平Probability (p) | 0.000 2 | 0.011 8 | 0.123 9 | |
显著性水平Probability (p) | 0.655 4 | 0.655 4 | 0.001 8 | |
异质Heterogeneity | 马尾松Pinus massoniana | 19.7(4.9) | 1.713 5(0.519 9) | 0.311 6(0.127 8) |
同质Homogeneity | 12.0(2.9) | 0.744 1(0.413 5) | 0.496 0(0.267 3) |
养分环境 Nutrient environment | 家系 Family | 总根长 Total length (cm) | 表面积 Surface area (cm2) | 平均直径 Average diameter (cm) | 根体积 Root volume (cm3) | 根系干物质量 Root dry matter accumulation (g) |
---|---|---|---|---|---|---|
异质 Heterogeneity | ‘龙15’ Long15 | 1 673.20 (354.936 2) | 312.571 7 (65.766 2) | 1.50 (1.06) | 4.695 4 (0.278 6) | 0.791 8 (0.278 4) |
‘锦屏45’ Jinping45 | 1 154.89 (515.600 5) | 194.760 7 (93.606 0) | 1.03 (1.39) | 2.658 9 (0.343 4) | 0.452 7 (0.213 9) | |
‘靖398’ Jing398 | 1 476.04 (584.437 1) | 245.034 5 (92.949 5) | 1.32 (1.20) | 3.282 4 (0.242 1) | 0.563 8 (0.233 5) | |
显著性水平 Probability (p) | 0.054 0 | 0.011 0 | 0.017 6 | 0.002 2 | 0.008 8 | |
同质 Homogeneity | ‘龙15’ Long15 | 1 609.83 (563.496 5) | 303.971 9 (106.859 3) | 1.39 (1.73) | 4.617 9 (0.438 6) | 0.816 8 (0.407 2) |
‘锦屏45’ Jinping45 | 794.80 (266.191 1) | 114.700 3 (44.808 9) | 0.89 (0.60) | 1.329 2 (0.078 8) | 0.399 8 (0.174 0) | |
‘靖398’ Jing398 | 1 278.68 (641.315 6) | 244.680 3 (106.859 3) | 1.32 (1.73) | 3.759 8 (0.293 5) | 0.599 5 (0.407 2) | |
显著性水平 Probability (p) | 0.013 5 | 0.003 4 | 0.005 6 | 0.001 7 | 0.008 8 | |
显著性水平Probability Probability (p) | 0.113 4 | 0.113 4 | 0.219 9 | 0.319 0 | 0.411 2 | |
异质 Heterogeneity | 马尾松Pinus massoniana | 614.80 (9.833 8) | 98.135 2 (0.041 8) | 1.02 (0.35) | 0.793 4 (1.542 1) | 0.407 1 (0.141 1) |
同质 Homorogeneity | 478.95 (7.220 1) | 69.927 8 (167.722 1) | 0.93 (0.40) | 0.815 6 (0.557 8) | 0.246 7 (0.143 1) |
表2 不同养分环境下杉木家系根系形态参数
Table 2 Difference of root morphological parameters between the heterogeneous and homogeneous environments
养分环境 Nutrient environment | 家系 Family | 总根长 Total length (cm) | 表面积 Surface area (cm2) | 平均直径 Average diameter (cm) | 根体积 Root volume (cm3) | 根系干物质量 Root dry matter accumulation (g) |
---|---|---|---|---|---|---|
异质 Heterogeneity | ‘龙15’ Long15 | 1 673.20 (354.936 2) | 312.571 7 (65.766 2) | 1.50 (1.06) | 4.695 4 (0.278 6) | 0.791 8 (0.278 4) |
‘锦屏45’ Jinping45 | 1 154.89 (515.600 5) | 194.760 7 (93.606 0) | 1.03 (1.39) | 2.658 9 (0.343 4) | 0.452 7 (0.213 9) | |
‘靖398’ Jing398 | 1 476.04 (584.437 1) | 245.034 5 (92.949 5) | 1.32 (1.20) | 3.282 4 (0.242 1) | 0.563 8 (0.233 5) | |
显著性水平 Probability (p) | 0.054 0 | 0.011 0 | 0.017 6 | 0.002 2 | 0.008 8 | |
同质 Homogeneity | ‘龙15’ Long15 | 1 609.83 (563.496 5) | 303.971 9 (106.859 3) | 1.39 (1.73) | 4.617 9 (0.438 6) | 0.816 8 (0.407 2) |
‘锦屏45’ Jinping45 | 794.80 (266.191 1) | 114.700 3 (44.808 9) | 0.89 (0.60) | 1.329 2 (0.078 8) | 0.399 8 (0.174 0) | |
‘靖398’ Jing398 | 1 278.68 (641.315 6) | 244.680 3 (106.859 3) | 1.32 (1.73) | 3.759 8 (0.293 5) | 0.599 5 (0.407 2) | |
显著性水平 Probability (p) | 0.013 5 | 0.003 4 | 0.005 6 | 0.001 7 | 0.008 8 | |
显著性水平Probability Probability (p) | 0.113 4 | 0.113 4 | 0.219 9 | 0.319 0 | 0.411 2 | |
异质 Heterogeneity | 马尾松Pinus massoniana | 614.80 (9.833 8) | 98.135 2 (0.041 8) | 1.02 (0.35) | 0.793 4 (1.542 1) | 0.407 1 (0.141 1) |
同质 Homorogeneity | 478.95 (7.220 1) | 69.927 8 (167.722 1) | 0.93 (0.40) | 0.815 6 (0.557 8) | 0.246 7 (0.143 1) |
养分斑块 Nutrient patch | 家系 Family | 总根长 Total length (cm) | 表面积 Surface area (cm2) | 根体积 Root volume (cm3) | 根系干物质量 Root dry matter accumulation (g) |
---|---|---|---|---|---|
富养斑块Rich patch | ‘龙15’ Long15 | 673.72(250.425 3) | 132.422 8(38.278 4) | 2.093 5(0.548 9) | 0.373 4(0.153 9) |
‘锦屏45’ Jinping45 | 415.47(110.930 6) | 28.395 4(26.788 2) | 0.456 0(0.500 6) | 0.148 6(0.145 7) | |
‘靖398’ Jing398 | 447.44(231.954 6) | 85.645 4(42.307 6) | 1.314 0(0.635 5) | 0.193 6(0.099 2) | |
马尾松Pinus massoniana | 403.25(154.480 9) | 64.373 9(22.593 0) | 0.823 1(0.338 8) | 0.204 6(0.045 2) | |
贫养斑块Poor patch | ‘龙15’ Long15 | 999.49(415.386 2) | 180.148 9(77.174 5) | 2.601 9(1.174 4) | 0.418 5(1.174 4) |
‘锦屏45’ Jinping45 | 804.72(389.615 3) | 130.325 9(65.975 7) | 1.694 9(0.912 6) | 0.283 7(0.159 2) | |
‘靖398’ Jing398 | 1 028.60(539.067 0) | 159.389 1(80.568 5) | 1.968 4(0.961 7) | 0.370 2(0.205 7) | |
马尾松P. massoniana | 211.56(54.043 4) | 33.761 3(7.948 0) | 0.430 8(0.100 2) | 0.101 0(0.090 9) |
表3 异质养分环境中富养和贫养斑块间根系形态参数差异
Table 3 Root morphological parameter differences between rich- and poor-patch of the heterogeneous environment
养分斑块 Nutrient patch | 家系 Family | 总根长 Total length (cm) | 表面积 Surface area (cm2) | 根体积 Root volume (cm3) | 根系干物质量 Root dry matter accumulation (g) |
---|---|---|---|---|---|
富养斑块Rich patch | ‘龙15’ Long15 | 673.72(250.425 3) | 132.422 8(38.278 4) | 2.093 5(0.548 9) | 0.373 4(0.153 9) |
‘锦屏45’ Jinping45 | 415.47(110.930 6) | 28.395 4(26.788 2) | 0.456 0(0.500 6) | 0.148 6(0.145 7) | |
‘靖398’ Jing398 | 447.44(231.954 6) | 85.645 4(42.307 6) | 1.314 0(0.635 5) | 0.193 6(0.099 2) | |
马尾松Pinus massoniana | 403.25(154.480 9) | 64.373 9(22.593 0) | 0.823 1(0.338 8) | 0.204 6(0.045 2) | |
贫养斑块Poor patch | ‘龙15’ Long15 | 999.49(415.386 2) | 180.148 9(77.174 5) | 2.601 9(1.174 4) | 0.418 5(1.174 4) |
‘锦屏45’ Jinping45 | 804.72(389.615 3) | 130.325 9(65.975 7) | 1.694 9(0.912 6) | 0.283 7(0.159 2) | |
‘靖398’ Jing398 | 1 028.60(539.067 0) | 159.389 1(80.568 5) | 1.968 4(0.961 7) | 0.370 2(0.205 7) | |
马尾松P. massoniana | 211.56(54.043 4) | 33.761 3(7.948 0) | 0.430 8(0.100 2) | 0.101 0(0.090 9) |
养分斑块 Nutrient patch | 家系 Family | 0 mm<D≤0.5 mm | 0.5 mm<D≤1 mm | D>1 mm | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
总根长 Total length (cm) | 表面积 Surface area (cm2) | 根体积 Root volume (cm3) | 总根长 Total length (cm) | 表面积 Surface area (cm2) | 根体积 Root volume (cm3) | 总根长 Total length (cm) | 表面积 Surface area (cm2) | 根体积 Root volume (cm3) | ||||
富养斑块 Rich-patch | ‘龙15’ Long15 | 489.53 | 445.289 7 | 56.122 3 | 46.86 | 85.809 0 | 19.901 4 | 0.39 | 1.373 1 | 0.568 5 | ||
‘锦屏45’ Jinping45 | 496.16 | 272.936 7 | 30.994 9 | 45.09 | 52.307 5 | 10.872 0 | 0.36 | 0.831 9 | 0.306 6 | |||
‘靖398’ Jing398 | 668.57 | 331.906 6 | 23.231 7 | 62.37 | 62.159 5 | 8.155 9 | 0.50 | 0.963 8 | 0.230 4 | |||
马尾松Pinus massoniana | 138.67 | 65.273 6 | 5.442 5 | 11.76 | 12.372 7 | 1.915 8 | 0.09 | 0.194 5 | 0.054 3 | |||
贫养斑块 Poor-patch | ‘龙15’ Long15 | 268.84 | 345.209 4 | 50.360 8 | 25.11 | 68.657 7 | 17.956 9 | 0.21 | 1.133 0 | 0.515 7 | ||
‘锦屏45’ Jinping45 | 219.55 | 182.229 2 | 30.563 6 | 20.12 | 35.842 4 | 10.957 8 | 0.16 | 0.585 9 | 0.316 5 | |||
‘靖398’ Jing398 | 193.61 | 215.711 0 | 32.839 9 | 17.76 | 43.227 8 | 11.728 0 | 0.14 | 0.719 4 | 0.337 6 | |||
马尾松P. massoniana | 249.23 | 142.477 9 | 7.917 1 | 21.83 | 26.891 4 | 2.792 3 | 0.17 | 0.419 8 | 0.079 3 |
表4 异质营养环境中富养和贫养斑块间根系不同径级的形态参数差异
Table 4 Differences of root morphological parameters between rich- and poor-patch of the heterogeneous environment
养分斑块 Nutrient patch | 家系 Family | 0 mm<D≤0.5 mm | 0.5 mm<D≤1 mm | D>1 mm | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
总根长 Total length (cm) | 表面积 Surface area (cm2) | 根体积 Root volume (cm3) | 总根长 Total length (cm) | 表面积 Surface area (cm2) | 根体积 Root volume (cm3) | 总根长 Total length (cm) | 表面积 Surface area (cm2) | 根体积 Root volume (cm3) | ||||
富养斑块 Rich-patch | ‘龙15’ Long15 | 489.53 | 445.289 7 | 56.122 3 | 46.86 | 85.809 0 | 19.901 4 | 0.39 | 1.373 1 | 0.568 5 | ||
‘锦屏45’ Jinping45 | 496.16 | 272.936 7 | 30.994 9 | 45.09 | 52.307 5 | 10.872 0 | 0.36 | 0.831 9 | 0.306 6 | |||
‘靖398’ Jing398 | 668.57 | 331.906 6 | 23.231 7 | 62.37 | 62.159 5 | 8.155 9 | 0.50 | 0.963 8 | 0.230 4 | |||
马尾松Pinus massoniana | 138.67 | 65.273 6 | 5.442 5 | 11.76 | 12.372 7 | 1.915 8 | 0.09 | 0.194 5 | 0.054 3 | |||
贫养斑块 Poor-patch | ‘龙15’ Long15 | 268.84 | 345.209 4 | 50.360 8 | 25.11 | 68.657 7 | 17.956 9 | 0.21 | 1.133 0 | 0.515 7 | ||
‘锦屏45’ Jinping45 | 219.55 | 182.229 2 | 30.563 6 | 20.12 | 35.842 4 | 10.957 8 | 0.16 | 0.585 9 | 0.316 5 | |||
‘靖398’ Jing398 | 193.61 | 215.711 0 | 32.839 9 | 17.76 | 43.227 8 | 11.728 0 | 0.14 | 0.719 4 | 0.337 6 | |||
马尾松P. massoniana | 249.23 | 142.477 9 | 7.917 1 | 21.83 | 26.891 4 | 2.792 3 | 0.17 | 0.419 8 | 0.079 3 |
家系 Family | 反应敏感度 Sensitivity (S) | 觅养精确性 Precision (RFRMD) |
---|---|---|
‘龙15’ Long15 | 0.683 9 | -0.035 7 |
‘锦屏45’ Jinping45 | 1.440 0 | -0.051 7 |
‘靖398’ Jing398 | 0.780 2 | -0.290 5 |
马尾松Pinus massoniana | 2.302 8 | 0.254 6 |
表5 杉木家系和马尾松根系觅养精确性及对异质养分环境敏感度
Table 5 Differences of sensitivity to heterogeneous nutrient environments
家系 Family | 反应敏感度 Sensitivity (S) | 觅养精确性 Precision (RFRMD) |
---|---|---|
‘龙15’ Long15 | 0.683 9 | -0.035 7 |
‘锦屏45’ Jinping45 | 1.440 0 | -0.051 7 |
‘靖398’ Jing398 | 0.780 2 | -0.290 5 |
马尾松Pinus massoniana | 2.302 8 | 0.254 6 |
家系 Family | 异质 Heterogeneity | 同质 Homogeneity | |||||
---|---|---|---|---|---|---|---|
N | P | K | N | P | K | ||
‘龙15’ Long15 | 2.151 8 | 0.180 6 | 2.119 2 | 2.277 4 | 0.394 4 | 1.676 4 | |
‘锦屏45’ Jinping45 | 0.881 6 | 0.074 3 | 0.973 2 | 1.134 7 | 0.086 7 | 1.011 0 | |
‘靖398’ Jing398 | 1.462 1 | 0.115 8 | 1.798 6 | 2.133 1 | 0.122 2 | 1.211 5 | |
马尾松Pinus massoniana | 1.020 2 | 0.015 8 | 0.151 5 | 0.837 8 | 0.024 6 | 0.165 1 |
表6 不同养分环境中杉木家系根系N、P、K吸收效率(mg·株-1)
Table 6 Absorption efficiency for N, P, K of root in the heterogeneous and homogeneous environments (mg·ind.-1)
家系 Family | 异质 Heterogeneity | 同质 Homogeneity | |||||
---|---|---|---|---|---|---|---|
N | P | K | N | P | K | ||
‘龙15’ Long15 | 2.151 8 | 0.180 6 | 2.119 2 | 2.277 4 | 0.394 4 | 1.676 4 | |
‘锦屏45’ Jinping45 | 0.881 6 | 0.074 3 | 0.973 2 | 1.134 7 | 0.086 7 | 1.011 0 | |
‘靖398’ Jing398 | 1.462 1 | 0.115 8 | 1.798 6 | 2.133 1 | 0.122 2 | 1.211 5 | |
马尾松Pinus massoniana | 1.020 2 | 0.015 8 | 0.151 5 | 0.837 8 | 0.024 6 | 0.165 1 |
家系 Family | 富养斑块Rich patch | 贫养斑块Poor patch | |||||
---|---|---|---|---|---|---|---|
N | P | K | N | P | K | ||
‘龙15’ Long15 | 2.837 2 | 0.215 3 | 2.189 2 | 2.303 2 | 0.179 3 | 2.218 5 | |
‘锦屏45’ Jinping45 | 3.187 0 | 0.203 3 | 2.253 6 | 2.304 0 | 0.197 5 | 2.386 8 | |
‘靖398’ Jing398 | 3.527 8 | 0.249 1 | 2.572 3 | 3.612 1 | 0.211 2 | 1.971 9 | |
马尾松Pinus massoniana | 2.835 4 | 0.080 0 | 0.560 4 | 2.782 4 | 0.089 0 | 0.560 2 |
表7 异质养分环境之富养和贫养斑块中根系养分含量(mg·g-1)
Table 7 Content of N, P, K of root in rich- and poor-patch of the heterogeneous environment (mg·g-1)
家系 Family | 富养斑块Rich patch | 贫养斑块Poor patch | |||||
---|---|---|---|---|---|---|---|
N | P | K | N | P | K | ||
‘龙15’ Long15 | 2.837 2 | 0.215 3 | 2.189 2 | 2.303 2 | 0.179 3 | 2.218 5 | |
‘锦屏45’ Jinping45 | 3.187 0 | 0.203 3 | 2.253 6 | 2.304 0 | 0.197 5 | 2.386 8 | |
‘靖398’ Jing398 | 3.527 8 | 0.249 1 | 2.572 3 | 3.612 1 | 0.211 2 | 1.971 9 | |
马尾松Pinus massoniana | 2.835 4 | 0.080 0 | 0.560 4 | 2.782 4 | 0.089 0 | 0.560 2 |
家系 Family | 异质 Heterogeneity | 同质 Homogeneity | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
富养斑块Rich-patch | 贫养斑块Poor-patch | A侧 A side | B侧 B side | |||||||||||||||||
N | P | K | N | P | K | N | P | K | N | P | K | |||||||||
‘龙15’ Long15 | 1.053 0 | 0.081 4 | 0.870 2 | 1.224 4 | 0.313 0 | 0.806 2 | 1.022 6 | 0.080 2 | 0.916 8 | 1.129 2 | 0.100 4 | 1.202 4 | ||||||||
‘锦屏45’ Jinping45 | 0.443 8 | 0.029 9 | 0.342 8 | 0.690 9 | 0.056 8 | 0.668 2 | 0.438 8 | 0.034 6 | 0.449 4 | 0.442 8 | 0.039 8 | 0.523 7 | ||||||||
‘靖398’ Jing398 | 0.721 3 | 0.046 1 | 0.509 1 | 1.411 8 | 0.076 1 | 0.702 4 | 0.692 5 | 0.053 7 | 0.873 2 | 0.769 6 | 0.062 1 | 0.925 4 | ||||||||
马尾松Pinus massoniana | 0.561 2 | 0.015 6 | 0.107 4 | 0.276 6 | 0.009 1 | 0.057 7 | 0.592 5 | 0.006 4 | 0.066 8 | 0.427 7 | 0.009 5 | 0.084 7 |
表8 在异质养分环境之富养和贫养斑块以及同质养分环境两侧根系养分吸收效率(mg·株-1)
Table 8 Absorption efficiency of N, P, K of root in rich- and poor-patch of the heterogeneous environment (mg·ind.-1)
家系 Family | 异质 Heterogeneity | 同质 Homogeneity | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
富养斑块Rich-patch | 贫养斑块Poor-patch | A侧 A side | B侧 B side | |||||||||||||||||
N | P | K | N | P | K | N | P | K | N | P | K | |||||||||
‘龙15’ Long15 | 1.053 0 | 0.081 4 | 0.870 2 | 1.224 4 | 0.313 0 | 0.806 2 | 1.022 6 | 0.080 2 | 0.916 8 | 1.129 2 | 0.100 4 | 1.202 4 | ||||||||
‘锦屏45’ Jinping45 | 0.443 8 | 0.029 9 | 0.342 8 | 0.690 9 | 0.056 8 | 0.668 2 | 0.438 8 | 0.034 6 | 0.449 4 | 0.442 8 | 0.039 8 | 0.523 7 | ||||||||
‘靖398’ Jing398 | 0.721 3 | 0.046 1 | 0.509 1 | 1.411 8 | 0.076 1 | 0.702 4 | 0.692 5 | 0.053 7 | 0.873 2 | 0.769 6 | 0.062 1 | 0.925 4 | ||||||||
马尾松Pinus massoniana | 0.561 2 | 0.015 6 | 0.107 4 | 0.276 6 | 0.009 1 | 0.057 7 | 0.592 5 | 0.006 4 | 0.066 8 | 0.427 7 | 0.009 5 | 0.084 7 |
家系 Family | 异质 Heterogeneity | 同质 Homogeneity | |||||
---|---|---|---|---|---|---|---|
N | P | K | N | P | K | ||
‘龙15’ Long15 | 2.188 6 | 0.251 8 | 1.577 2 | 3.719 4 | 0.228 1 | 1.343 7 | |
‘锦屏45’ Jinping45 | 3.385 2 | 0.254 7 | 1.462 0 | 2.044 3 | 0.269 1 | 2.047 7 | |
‘靖398’ Jing398 | 3.228 3 | 0.286 6 | 2.050 3 | 3.860 5 | 0.233 1 | 1.811 1 | |
马尾松Pinus massoniana | 3.306 4 | 0.133 1 | 1.361 8 | 3.140 6 | 0.093 2 | 1.059 8 |
表9 不同养分环境中杉木家系针叶N、P、K含量 (mg·g-1)
Table 9 Content of N, P, K in leaf of the heterogeneous and homogeneous environments (mg·g-1)
家系 Family | 异质 Heterogeneity | 同质 Homogeneity | |||||
---|---|---|---|---|---|---|---|
N | P | K | N | P | K | ||
‘龙15’ Long15 | 2.188 6 | 0.251 8 | 1.577 2 | 3.719 4 | 0.228 1 | 1.343 7 | |
‘锦屏45’ Jinping45 | 3.385 2 | 0.254 7 | 1.462 0 | 2.044 3 | 0.269 1 | 2.047 7 | |
‘靖398’ Jing398 | 3.228 3 | 0.286 6 | 2.050 3 | 3.860 5 | 0.233 1 | 1.811 1 | |
马尾松Pinus massoniana | 3.306 4 | 0.133 1 | 1.361 8 | 3.140 6 | 0.093 2 | 1.059 8 |
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