土、肥、水是经济林木赖以生存的基础,建立好“三保地”,满足经济林木生长发育过程中对水、肥的需要,是取得持续高产稳产的根本保证。经济林栽培与用材林等的培育有一定差异,它有其固有特点,如果经营不当,不仅产量低,还容易出现士壤侵蚀现象,严重影响经济效益和生态效益,发展经济林引起的水土流失一 Soil, fertilizer and water are the basis for the economic forest to survive. Establishing the “three guarantees” to meet the needs of water and fertilizer in the process of economic forest growth and development is the fundamental guarantee for sustained high and stable production. Economic forest cultivation and timber forest cultivation have some differences, it has its inherent characteristics, if not properly managed, not only low yield, but also prone to erosion of soil erosion, serious impact on economic and ecological benefits, the development of economic forest caused by soil erosion