甘肃野生草地早熟禾(Poa pratensis)分布区土壤养分状况
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白小明, 张咏梅, 陈辉, 张君兰
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Soil nutrient status of Poa pratensis distribution areas in Gansu, China
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Xiaoming Bai, Yongmei Zhang, Hui Chen, Junlan Zhang
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表3 甘肃7个野生草地早熟禾分布地不同层次土壤养分含量
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Table 3 Soil nutrient contents at different soil layers in 7 Poa pratensis in Gansu Province
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样地和土层 | 土壤性质 |
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土壤pH | 有机质(OM) /(g·kg-1) | 全氮(TN) /(g·kg-1) | 速效氮(AN) /(mg·kg-1) | 全磷(TP) /(g·kg-1) | 速效磷(AP) /(mg·kg-1) | 速效钾(AK) /(mg·kg-1) |
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样地 | 张掖肃南(SN) | 7.10±0.027d | 133.14±7.872a | 7.35±0.162a | 455.85±9.083a | 1.16±0.004b | 155.72±7.350b | 20.01±0.165bc | 甘南夏河(XH) | 7.13±0.031d | 26.09±0.693c | 2.05±0.093c | 97.57±2.192d | 0.63±0.004d | 56.52±2.334d | 24.37±0.311b | 定西渭源(WY) | 7.54±0.010c | 23.84±1.805c | 1.50±0.100c | 58.68±5.054e | 0.69±0.007c | 62.03±2.134d | 30.23±1.473a | 兰州兴隆山(XLS) | 7.10±0.016d | 66.92±2.368b | 3.43±0.125b | 193.73±9.598b | 1.37±0.031a | 238.50±9.661a | 15.51±0.244c | 定西安定(AD) | 7.68±0.011b | 59.28±1.977b | 1.77±0.111c | 111.76±6.092c | 0.36±0.010f | 95.59±1.550c | 32.26±1.195a | 天水清水(QS) | 8.24±0.007a | 26.90±0.557c | 0.61±0.018d | 45.77±0.916g | 0.57±0.004e | 98.57±1.143c | 30.45±1.187a | 定西陇西(LX) | 8.27±0.001a | 31.40±1.365c | 0.97±.058d | 51.05±1.410f | 0.39±0.007f | 88.23±2.640c | 18.67±0.449c | 土层/cm | 0~10 | 7.43±0.028c | 79.24±3.093a | 3.27±0.133a | 196.77±7.878a | 0.74±0.014b | 146.10± 4.961a | 20.28±0.325b | 10~20 | 7.61±0.023b | 39.72±1.174b | 2.13±0.101b | 140.11±6.831b | 0.71±0.015c | 103.90±2.041b | 25.26±0.462a | 20~30 | 7.69±0.020a | 38.57±1.327b | 2.17±0.091b | 97.86±5.352c | 0.77±0.024a | 90.79±2.139c | 27.95±0.523a |
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