摘要
用能量观点对陕北黄土10个土样进行了水分特性研究,找出了陕北黄土基质吸力——含水量关系线,推算了它们的换算公式,并对陕北黄土的持水性的定量变化进行了计算分析。结果表明,以洛川黄土高原区持水量最多,安塞丘陵区次之,子洲丘陵、榆林高原边原区均较少。
10 loessal soil samples were analysed to sutdy the miosture behaviors in view ofenergy thereby to find out the relation curve between substrate suction and moisturecontents in loess in North shaanxi and to deduce their conversion formula.Also,thecalculation analysis was made of quantitative variations in moisture retention.The re-sults showed that water retention ability is the greatest in Locbuan loess plateau area,next in Anzai hilly and gully area,smaller in Zichou hills and the remote area of Yulingplateau.
出处
《干旱地区农业研究》
CSCD
北大核心
1992年第3期67-73,共7页
Agricultural Research in the Arid Areas
