| 高会议,王益权.泥炭配合基质水分特征曲线的特性研究[J].干旱地区农业研究,2009,27(4):60~64 |
| 泥炭配合基质水分特征曲线的特性研究 |
| The study on characteristics of water characteristic curve of mixed stroma of the peat and soil |
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| DOI：10.7606/j.issn.1000-7601.2009.04.12 |
| 中文关键词: 泥炭 水分特征曲线 高速离心机 拟合 |
| 英文关键词:peat water characteristic curve high speed centrifuge fitting |
| 基金项目:陕西省科技厅科技计划（2005K01-G16） |
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| 中文摘要: |
| 泥炭和粘土不同比例配合土按同一容重装填到环刀中，采用高速离心机法和大气平衡法测定配合土的不同吸力下土壤的含水量，并利用Van Gennuchten数学模型对水分特征曲线进行拟合，进而来分析泥炭与粘土配合土的持水能力。研究结果表明：①泥炭和粘土（＜1 mm）比例为3∶1时的持水能力较强，优于其它配比。②泥炭和粘土（3～5 mm）比例为3∶1和4∶1时的持水性较好。 |
| 英文摘要: |
| The mixed soil made from the peat and clay with a certain amount of density according to different proportion was loaded into central knife. Then soil moisture content was measured and analyzed and the water characteristic curve was imitated with Van Gennuchten mathematical model under different suction using high-speed centrifuges and atmospheric balance mensurate, so as to analyze the difference of water-holding capacity of the mixed soil with various ratios of peat and clay. The results show that: ①If the ratio of peat and clay (less than 1 mm) is 3∶1, the water-holding capacity is stronger than other ratio. ②If the ratio of peat and clay (3～5 mm) is 3∶1 and 4∶1, the water-holding capacity is better. |
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