红壤坡地果园不同耕作措施的水土保持效应研究

Study on Soil and Water Conservation Effect under Different Tillages for Orchards on Red Soil Slopeland

针对南方广大红壤坡地果园因耕作不当而导致的水土流失,开展了系列研究。通过翔实的观测数据认真分析了不同耕作措施差异,找出了多种措施的优劣,分别是横坡耕作、顺坡耕作、果园清耕和裸露对照,得出了增加植被、改进耕作有明显的保持水土作用,单纯的耕作措施仍不能杜绝水土流失,欲要从根本上控制,还应与其他措施配合的结论。

This paper described the series of research, we'd conducted to solve various red soil sloping land erosion problems caused by inappropriate cultivations in south China. Based on analyses of the accurate observations on various of tilages and the relevant meteorological data, the results showed that contour cultivation was the most effective measure for soil and water conservation, other different measures were in the order from downslope cultivation, clean tillage to no planting (CK). It was also proved that denser vegetation and cultivation improvement were conspicuous effectively. However, cultivation practice alone cannot eliminate runoff on the steep slopes absolutely, and it was suggested that cultivation should be carried out to provide protection to land surface against erosion with other conservation practices.