晋西北丘陵风沙区不同种植年限柠条( Caragana korshinskii )种子更新早期过程对干旱胁迫的响应机制
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张宇, 缑倩倩, 高敏, 张妍, 郭文婷, 王国华
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The response mechanism of early seed regeneration process of Caragana korshinskii bushes with different plantation ages in sandy-hilly region of northwest Shanxi Province
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Yu Zhang, Qianqian Gou, Min Gao, Yan Zhang, Wentin Guo, Guohua Wang
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表2 干旱胁迫下不同年限柠条幼苗的生物量
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Table 2 Biomass characteristics of Caragana korshinskii of different ages under different drought stress
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年限/a | 指标 | 土壤相对含水量 |
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70%~75%(适宜) | 55%~60%(轻旱) | 40%~45%(中旱) | 30%~35%(重旱) |
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7 | 地上生物量/g | 1.31+0.02a | 0.71+0.04b | 0.39+0.03c | 0.22+0.01c | 地下生物量/g | 0.92+0.02a | 0.51+0.02b | 0.38+0.02c | 0.28+0.04c | 总生物量/g | 2.23+0.05a | 1.22+0.05b | 0.77+0.04c | 0.50+0.05c | 13 | 地上生物量/g | 1.33+0.04a | 0.73+0.03b | 0.41+0.04c | 0.24+0.01d | 地下生物量/g | 0.94+0.01a | 0.58+0.03b | 0.40+0.03bc | 0.33+0.02c | 总生物量/g | 2.27+0.03a | 1.31+0.02b | 0.81+0.07bc | 0.57+0.01c | 19 | 地上生物量/g | 1.31+0.04a | 0.71+0.02b | 0.42+0.00c | 0.23+0.01c | 地下生物量/g | 0.92+0.01a | 0.52+0.03b | 0.39+0.03c | 0.32+0.01c | 总生物量/g | 2.23+0.03a | 1.23+0.03b | 0.81+0.03c | 0.55+0.00c | 51 | 地上生物量/g | 1.30+0.02a | 0.68+0.03b | 0.38+0.03c | 0.19+0.00c | 地下生物量/g | 0.90+0.00a | 0.48+0.03b | 0.35+0.02b | 0.25+0.03b | 总生物量/g | 2.20+0.02a | 1.17+0.06b | 0.74+0.04c | 0.44+0.03d |
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