soil horizon

基本解释

The sewage soil disposal experiment is made mainly by using biochemical process of looser permeable soil horizon, and secondly by leaching and adsorption.
污水土壤处理试验，主要是利用透水性较强的土壤层的生物化学作用，其次是淋滤吸附。
The relationship between soil moisture in various soil horizon and senescence, and irrigation efficiency of different irrigation scheme have been discussed.
文中还就不同层次土壤水分状况与衰老的关系及不同灌水方案的灌溉效益进行了分析。
First, soil erosion modulus can be estimated by using water erosion model, and the maps of soil density and soil horizon thickness can be derived from soil detailed survey data.
首先，采用侵蚀预报的数学模型来估算土壤侵蚀量，用土壤详查资料编制土层厚度和土壤容重图；