The sewage soil disposal experiment is made mainly by using biochemical process of looser permeablesoil 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。
2
After cutting around the cuttings to soil compaction and then pouring a permeable so that the lower part of cuttings and soil paste it.
扦插后要把插穗周围的土壤压实并随即浇一次透水，使插穗下部与土壤贴实。
3
The target porosity and thickness of pavement of the permeable asphalt mixture on the basis of the factors such as reducing the runoff, the filter ability of soil base and pavement overflow.