我省西部共十六个市县,总土地面积一亿零二百万亩。根据“三北防护林”规划,到二千年时,林地面积由现在的五百六十六万亩增加到二千万亩。这是一个伟大而艰巨的任务,为了加速这一地区的速生丰产林的营造,仅就管见所及,在技术方面提如下几点意见,供参考。 There are 16 cities and counties in the western part of our province with a total land area of ​​102 million mu. According to the “Three North Shelterbelt” plan, by the year 2000, the area of ​​forestland will increase from the current 5.66 million mu to 20 million mu. This is a great and arduous task. To speed up the construction of fast-growing and high-yield forests in this area, we will make the following observations on technical aspects for reference only.