我省长防林工程区约有30万亩坡耕地,虽只占治理区内水土流失面积的4.8%,但土壤侵蚀量却占18%,平均侵蚀模数达8000T/km~2·A。混农造林是坡耕地改造中投入低、见效快、收益高而深受群众欢迎的主要方式。适合本治理区发展的混农造林模式主要有:板栗 About 30 million mu of slope farmland in the project area of ​​governor’s forest protection in our governorate, though only accounting for 4.8% of the area of ​​water and soil loss in the area under management, accounts for 18% of the total amount of soil erosion, with an average erosion modulus of 8000T / km ~ 2 · A. Agroforestry and afforestation is the main method of low input, quick returns, high returns and welcomed by the masses in slope farmland rebuilding. Suitable for the development of this management area agro-forestry model are: chestnut