The organic matter and available potassium increased by a big margin will were vital question in the course of the fertility restoration of degeneratedsoil.
大幅度提高土壤有机质含量及供钾水平是退化土壤肥力恢复过程中面临的重要问题。
2
Soil erosion and soildegenerated by erosion is a main environmental problem in the world.
土壤侵蚀及其导致的土壤质量退化是世界性的重大环境问题之一。
3
Meanwhile, it shows that the reason of soildegenerated by erosion is the unreasonable use of land by comparing present situation of land utilization and its adaptability.