Biomass materials have been rapidly used in generating power, heating, and other industrial applications; the remains from the combustion of biomass materials, biomass ash, are being produced in large quantities rapidly. Accordingly, a method of consuming biomass ash, expanding new applications, and achieving resource utilization is urgently required. This research studies the basic properties of adding biomass ash in soils by examining the effects of water evaporation and the development of shrinkage cracks in soils. Laboratory evaporation tests have been carried out on soil samples with different quantities of biomass ash. The loss of mass is recorded to evaluate the effect of biomass ash on the behavior of water evaporation in the soil. Image processing technology and fractal theory are used to quantitatively analyze the development of shrinkage cracks on the soil surface. The results show that biomass ash can effectively reduce evaporation and crack development in soil. With increases in the biomass ash content, although the difference of residual water content is small, the evaporation time is increased with decreasing crack ratio. The addition of biomass ash greater than 5% has a significant impact (p ≤ 0.05) on soil evaporation, and the addition greater than 2.5% has a significant impact (p ≤ 0.05) on soil cracking. The time of evaporation with biomass ash addition amount of 2.5%, 5%, 10%, 15%, and 20% increased by 10%, 22%, 32%, 43%, and 49% in turn, the crack ratio of which decreased by 12%, 42%, 65%, 72%, and 74%, respectively, over control samples.

生物质材料已被迅速用于发电，供暖和其他工业应用中。生物质材料燃烧产生的残余物，生物质灰分正在迅速大量生产。因此，迫切需要一种消耗生物质灰分，扩展新用途以及实现资源利用的方法。本研究通过研究水分蒸发的影响以及土壤收缩裂缝的发展，研究了在土壤中添加生物质灰分的基本特性。已经对具有不同量生物质灰分的土壤样品进行了实验室蒸发测试。记录质量损失，以评估生物质灰分对土壤水分蒸发行为的影响。利用图像处理技术和分形理论对土壤表面收缩裂缝的发展进行了定量分析。结果表明，生物质灰分可以有效减少土壤中的蒸发和裂缝的发展。随着生物质灰分含量的增加，尽管残留水含量的差异很小，但是蒸发时间随着裂纹率的降低而增加。添加超过5％的生物质灰分会产生重大影响（p 对土壤蒸发，并加入大于2.5％≤0.05）具有显著影响（p 对土壤裂化≤0.05）。添加了2.5％，5％，10％，15％和20％的生物质灰分的蒸发时间依次增加了10％，22％，32％，43％和49％，其中裂纹率与对照样品相比，分别降低了12％，42％，65％，72％和74％。