Through some investigation found that, although the soil conditions at Long Bien is not narrow but most breeding facilities are located in residential areas, the pig farm fields outside residential areas is still far less. Most were using biogas, but the situation for livestock waste discharged directly into the environment is still a lot, accounting for 50.32%. farmers often take advantage of the land and demographic, but not a farmer, so that the excess amount of waste by processing biogas not all been discharged directly into drains General
đang được dịch, vui lòng đợi..