Abstract: The benefit of water and soil conservation oforange orchard covered with grass in Zhexi Reservoir Areawas analyzed. The results show that the method of tillage caneffectively control water loss and soil erosion,improve soiIphysical and chemical properties and achieve the goal of preserving moisture,soil and fertilizer, Mean while,it can regulatethe climate of orange orchard and provide sound eco-environment for orange growth AlI these are essential for stable andhigh yield of orange. 

Key words: Zhexi Reservior, ecological benefit, soil andwater conservation, orange orchard, cleaning method of tillage