建土坝树坪于下坡面树冠投影内筑半圆形土埂,从上坡面取土,土埂高度约40厘米,并在上侧边缘留溢洪口,水过多时从溢洪口流出,以免冲坏埂沿。闸沟生长在沟谷中的栗树因连年雨水冲刷,往往根系裸露、树势衰弱。在沟中每隔10米左右垒一道坝,垒前要清好坝基,并在沟中央砌好泄水涵洞,或 Construction of the earth dam dams on the downslope canopy project built semi-circular soil ridge, borrowed from the upper slopes, soil 埂 height of about 40 cm, and in the upper edge of overflow spill, excessive water from the spillway Outflow, so as not to spoil 埂 along. Gully growing in the valleys of chestnut trees due to successive years of rain erosion, often exposed roots, tree weakness. In the ditch every 10 meters base barrier at the base, a good foundation before the dam foundation, and ditch in the ditch to build drainage culvert, or