冻融循环作用下植被混凝土团聚结构变化对养分固持能力的影响
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刘大翔, 刘德玉, 童标, 杨悦舒, 丁瑜, 许文年
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Effect of aggregate structure change in vegetation concrete on nutrient retention ability under freeze-thaw cycles
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Daxiang LIU, Deyu LIU, Biao TONG, Yueshu YANG, Yu DING, Wennian XU
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表4 不同初始含水率与冻融循环次数下植被混凝土的主要养分淋溶流失率
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Table 4 Leaching loss rates of major nutrient substances in vegetation concrete under different initial water contents and freeze-thaw cycles
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初始含水率/% | 冻融循环次数 | 主要养分淋溶流失率/% |
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有机质 | 铵态氮 | 硝态氮 | 有效磷 | 速效钾 |
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18 | 0 | 8.94±0.18a | 14.53±0.13a | 13.47±0.16a | 14.67±0.21a | 15.29±0.13a | 1 | 9.12±0.21a | 15.24±0.19b | 15.76±0.11b | 14.85±0.14a | 23.42±0.19b | 2 | 10.11±0.16b | 15.98±0.11c | 16.92±0.23c | 15.76±0.17b | 23.56±0.20b | 4 | 11.24±0.22c | 17.21±0.23d | 17.18±0.16c | 16.14±0.16c | 24.11±0.16c | 8 | 13.85±0.23d | 18.14±0.12e | 18.37±0.17d | 16.69±0.14d | 24.73±0.24d | 16 | 15.36±0.14e | 19.32±0.24f | 21.26±0.21e | 17.73±0.11e | 25.22±0.15e | 32 | 16.93±0.16f | 19.78±0.32g | 22.53±0.13f | 18.29±0.22f | 25.81±0.13f | 64 | 17.08±0.31f | 20.47±0.18h | 25.94±0.42g | 20.07±0.18g | 25.63±0.14f | 对数拟合 y=alnx+b | a | 0.3286 | 0.2413 | 0.4324 | 0.1773 | 0.5190 | b | 12.8930 | 17.6310 | 19.0130 | 16.8100 | 23.5730 | R2 | 0.4035 | 0.5193 | 0.4938 | 0.4033 | 0.9945 | 24 | 0 | 7.94±0.19a | 13.63±0.14a | 12.51±0.16a | 12.64±0.20a | 13.31±0.17a | 1 | 8.23±0.12a | 13.25±0.16a | 14.03±0.22b | 13.11±0.13b | 22.63±0.18c | 2 | 9.06±0.13b | 14.34±0.11b | 15.52±0.18c | 15.39±0.17c | 20.90±0.27b | 4 | 11.15±0.18c | 14.75±0.28c | 18.72±0.15d | 14.03±0.12c | 23.55±0.23d | 8 | 12.27±0.23d | 15.57±0.24d | 17.29±0.16e | 13.87±0.26d | 26.00±0.17f | 16 | 13.02±0.17e | 15.76±0.16d | 20.12±0.23f | 16.05±0.17e | 26.25±0.14f | 32 | 16.04±0.16f | 17.35±0.17e | 21.50±0.17g | 17.93±0.11f | 25.92±0.11f | 64 | 16.42±0.21g | 19.89±0.25f | 25.78±0.34h | 19.50±0.14g | 24.53±0.25e | 对数拟合 y=alnx+b | a | 0.3220 | 0.1779 | 0.4516 | 0.2206 | 0.6169 | b | 11.8290 | 15.6020 | 18.2720 | 15.3580 | 23.0070 | R2 | 0.4104 | 0.2890 | 0.4755 | 0.3629 | 0.8940 |
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