福建省侵蚀坡地的可持续利用

Sustainable Utilization of Eroded Hillside Fields in Fujian Province

福建省25°以下的未开垦利用的侵蚀坡地，通过多年的开发与整治，不仅有效地控制了水土流失，且建立了水果生产基地。然而，在侵蚀坡地，尤其是在中、强度侵蚀坡地上开垦的果园，土壤肥力尚未得到改善，坡地生态系统仍然较脆弱。因此，在侵蚀坡地果园上必须通过套种绿肥（牧草），以增加园面覆盖和生物归还量，促使土壤肥力的提高和环境条件的改善。研究证明，这是保证侵蚀坡地持续利用的一条根本出路。

Through the research on exploitation and harness of the eroded hillside fields, whichless than 25° in Fujian province, are unreclaimed and unutilizated, the soil and water loss hasbeen controlled effectively, and the fruit productive base has been founded at the same time.However,there are some problems existing in ploughed fruit orchard on eroded hillside fields,especially the medium and serious eroded hillside fields, such as the soil fertility is unimprovedand ecosystem of hillside fields is still very fragile. Hence,we must using the method of inter-planting pasture to mcrease cover degree in the orchard and the quantity of organic materials,which can improve the soil fertility and environmental conditions. The result shows that it isthe fundmental way to keep the sustainable utilization of the eroded hillside fields.