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土壤凋萎含水量的大小,除受土壤性质的影响外,还决定于所测植物种类的抗旱性能。土壤凋萎系数一般用布里格斯-尚茨公式(凋萎系数=最大吸湿系数/(0.68±0.012))计算,或用小麦等农作物直接测定,其结果是否具有普遍性?是否适用于林木? 至今还没有足够的资料能对上述问题作出圆满的回答。我们于1984年,在位于北京西郊的九龙山试验林场,进行了有关这方面的初步研究。
Soil wilting water content, in addition to the nature of the soil, but also depends on the tested plant species of drought resistance. The soil wilting coefficient is generally calculated by the Briggs-Schauen formula (wilting coefficient = maximum moisture absorption coefficient / (0.68 ± 0.012)) or directly measured by crops such as wheat, and is the result universal and suitable for forest trees There is not enough information to answer the above questions satisfactorily. We conducted a preliminary study in 1984 in Jiulongshan Experimental Forest Farm in the western suburbs of Beijing.