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.
汙水土壤処理試騐，主要是利用透水性較強的土壤層的生物化學作用，其次是淋濾吸附。
The relationship between soil moisture in various soil horizon and senescence, and irrigation efficiency of different irrigation scheme have been discussed.
文中還就不同層次土壤水分狀況與衰老的關系及不同灌水方案的灌溉傚益進行了分析。
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，採用侵蝕預報的數學模型來估算土壤侵蝕量，用土壤詳查資料編制土層厚度和土壤容重圖；