Under two different types of climate in loess hilly and gully region

following three aspects were studied

namely(1) four general land preparation methods applied to different scale

(2)Soil water moving patern nearby tree plantinghole when different scale of rainwater runoff collecting method adapted

and (3)effect of the technique on both youngand old aforestation tree species growth. Results supplied both the suit size or scalp for land preparation to collect rain-water runoff and required areas to collect in case of different purpose. The results also provided scientificinformation todrought-resisting aforestation in the region.