水土保持是国土整治的重要组成部分,是造福子孙后代的根本大计。我省水土流失面积有七千五百万亩,耕地流失面积有六千万亩,占现有耕地面积的二分之一,耕地中严重流失的有三千万亩,占现有耕地的四分之一,给当地的农牧业生产和人民生活带来严重危害,迫切需要治理。据此,1963年4月省林业科学院下达了《水土保持林的研究》课题。1964年到 Soil and water conservation is an important part of land remediation and is the fundamental plan for the benefit of future generations. The area of ​​soil erosion in our province is 75 million mu and the area of ​​arable land loss is 60 million mu, accounting for one-half of the existing cultivated land. There are 30 million mu of serious loss in cultivated land, accounting for four As a result, it has brought serious harm to local agricultural and livestock production and people’s livelihood, and it urgently needs treatment. Accordingly, in April 1963 the provincial Academy of Forestry issued a “study of soil and water conservation forest” project. To 1964