Chin J Plant Ecol ›› 2020, Vol. 44 ›› Issue (3): 248-256.DOI: 10.17521/cjpe.2019.0157
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FENG Yin-Ping1,2,SHEN Hai-Hua1,2,LUO Yong-Kai1,2,XU Long-Chao1,2,LIU Shang-Shi1,2,ZHU Yan-Kun1,2,ZHAO Meng-Ying1,2,XING Ai-Jun1,2,FANG Jing-Yun1,2,3,*()
Received:
2019-06-25
Accepted:
2020-02-20
Online:
2020-03-20
Published:
2020-07-31
Contact:
Jing-Yun FANG
Supported by:
FENG Yin-Ping, SHEN Hai-Hua, LUO Yong-Kai, XU Long-Chao, LIU Shang-Shi, ZHU Yan-Kun, ZHAO Meng-Ying, XING Ai-Jun, FANG Jing-Yun. Effects of planting density on growth and biomass of Medicago sativa[J]. Chin J Plant Ecol, 2020, 44(3): 248-256.
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URL: https://www.plant-ecology.com/EN/10.17521/cjpe.2019.0157
Fig. 1 Quantity change of Medicago sativa population under different planting densities (mean ± SE). A, B, C, D, E, F represents 25, 100, 400, 800, 1 500, 2 000 plants·m-2 planting densities.
Fig. 2 Average death rate of Medicago sativa population under different planting densities in the first and second harvests (mean ± SE). A, B, C, D, E, F represents 25, 100, 400, 800, 1 500, 2 000 plants·m-2 planting densities.
Fig. 4 Relationships between individual biomass and density of survivors for Medicago sativa. The horizontal and vertical axes are both logarithmic scale.
处理 Treatment | 单位面积干草生物量 Dry matter biomass (g·m-2) | 单位面积鲜草生物量 Fresh matter biomass (g·m-2) | 单位面积地下生物量 Below-ground biomass (g·m-2) |
---|---|---|---|
A | 236.9 ± 41.9a | 924.7 ± 62.2a | 100.0 ± 23.6a |
B | 256.5 ± 26.4a | 902.9 ± 97.6a | 125.8 ± 12.9ab |
C | 243.7 ± 8.0a | 886.1 ± 81.9a | 146.7 ± 16.4b |
D | 246.8 ± 10.1a | 968.0 ± 70.2ab | 144.5 ± 14.2b |
E | 255.0 ± 19.0a | 1 074.3 ± 139.9ab | 129.6 ± 7.5ab |
F | 248.4 ± 16.4a | 1 139.5 ± 65.8b | 133.2 ± 21.6ab |
Table 1 Effect of planting density on biomass for Medicago sativa (mean ± SE)
处理 Treatment | 单位面积干草生物量 Dry matter biomass (g·m-2) | 单位面积鲜草生物量 Fresh matter biomass (g·m-2) | 单位面积地下生物量 Below-ground biomass (g·m-2) |
---|---|---|---|
A | 236.9 ± 41.9a | 924.7 ± 62.2a | 100.0 ± 23.6a |
B | 256.5 ± 26.4a | 902.9 ± 97.6a | 125.8 ± 12.9ab |
C | 243.7 ± 8.0a | 886.1 ± 81.9a | 146.7 ± 16.4b |
D | 246.8 ± 10.1a | 968.0 ± 70.2ab | 144.5 ± 14.2b |
E | 255.0 ± 19.0a | 1 074.3 ± 139.9ab | 129.6 ± 7.5ab |
F | 248.4 ± 16.4a | 1 139.5 ± 65.8b | 133.2 ± 21.6ab |
处理 Treatment | 根冠比 Root-shoot ratio | 叶茎比 Leaf-stem ratio |
---|---|---|
A | 0.45 ± 0.20 | 0.82 ± 0.05 |
B | 0.49 ± 0.10 | 0.95 ± 0.12 |
C | 0.60 ± 0.08 | 0.97 ± 0.13 |
D | 0.58 ± 0.04 | 0.77 ± 0.05 |
E | 0.53 ± 0.10 | 0.74 ± 0.07 |
F | 0.53 ± 0.06 | 0.88 ± 0.11 |
Table 2 Effect of planting density on biomass allocation for Medicago sativa (mean ± SE)
处理 Treatment | 根冠比 Root-shoot ratio | 叶茎比 Leaf-stem ratio |
---|---|---|
A | 0.45 ± 0.20 | 0.82 ± 0.05 |
B | 0.49 ± 0.10 | 0.95 ± 0.12 |
C | 0.60 ± 0.08 | 0.97 ± 0.13 |
D | 0.58 ± 0.04 | 0.77 ± 0.05 |
E | 0.53 ± 0.10 | 0.74 ± 0.07 |
F | 0.53 ± 0.06 | 0.88 ± 0.11 |
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