Water Retention, Porosity and Density of Field Soils
Water Retention, Porosity and Density of Field Soils
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发表时间：
1977-08
期刊：
影响因子：
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通讯作者：
D. Hall;M. Reeve;A. Thomasson;V. Wright
中科院分区：
文献类型：
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作者：
D. Hall;M. Reeve;A. Thomasson;V. Wright
这份报告记录了从英格兰各地261个有充分记录的土壤剖面中采集的土壤样品的物理性质。它描述了取样技术和样品储存的安排，以及水分释放测量的程序、仪器和计算。讨论了土壤参数的实验室测量方法。通过对试验结果的分析，揭示了粘粒含量与持水性的关系，以及各种土壤性质对有效水和空气容量变化的影响。包括颗粒大小分类的分析，并讨论了土壤剖面的图解表示法用于土壤分类。最后，考虑到土地利用对土壤特性的影响，以及利用剖面可用水和气候数据来评估草地和可耕地作物的干旱风险。/TRRL/
This report records the physical properties of soil samples taken from 261 fully documented soil profiles throughout England. It describes sampling techniques and arrangements for sample storage, with procedures, apparatus and calculations for moisture release measurements. Laboratory methods for the measurement of soil parameters are discussed. An analysis of test results shows the relation between clay content and water retention, and the effect of various soil properties on the variations in available water and air capacity. An analysis by particle-size classification is included, and the use of diagrammatic presentation of soil profiles for soil classification is discussed. Finally, consideration is given to the effect of land use on soil properties and the use of profile available water together with climatic data to assess drought risk for grassland and arable crops. /TRRL/