土壤表面粗糙度检测方法研究

摘要

Soil surface roughness is a important indicator to descript soil surface micro-topography , which affects infiltra-tion rate, runoff and soil erosion.Soil surface roughness has a direct impact crop planting , irrigation, harvest, and is one of the key issues need to be resolved in the current agricultural development .Fine and level paddy field can signifi-cantly help save irrigation water , raise fertilizer utilization , and suppress weeds so as to get good harvest with low cost . Soil surface roughness measurement is the first task we need to solve .This research begin with far and wide reading at home and abroad related literatures , then introduce five main different soil surface roughness measurement-methods with its application currently .Through compare with the detection of data acquisition , resolution , precision andsiol micro-to-pography characterizes , we find out the current status and insufficient between different methods .In the end , we sum-marize its trend in development , and give the basis for further study in this area .%土壤表面粗糙度是表征土壤表面微地貌的一项重要指标，与土壤本身水分入渗速率、地表径流及土壤侵蚀等密切相关。土壤表面粗糙度直接影响农作物种植、灌溉、收成等，是当前农业发展急需解决的关键问题之一。精细平整的土地，能大幅地节约灌溉用水，提高肥料的利用率和抑制杂草的生长，达到低成本、高收益的目的。为此，在广泛阅读国内外相关文献的基础，主要介绍5种当前主流的土壤表面粗糙度检测方法及其应用情况。通过对检测数据获取、检测时间、检测分辨率、检测精度和土壤微地形的表征情况等指标进行对比，得出当前各种土壤表面粗糙度检测方法的研究现状与存在问题。最后总结其未来发展方向，为对该领域的进一步研究提供参考依据。