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造林是一种复杂的系统工程。除组织、发动等属于管理性质的问题以外,还涉及许多复杂的科学技术问题。基本要求是根据不同的条件确定不同的林种和选用不同的树种,采取不同的技术措施。所以,为了保证造林工作取得好的成效,在造林前必须搞好规划设计工作,並按规划设计施工。我国自五十年代初开始,造林规模不断扩大。但几次调查证实,三十年来的造林保存面积不超过造林统计面积的20—30%。而且在保存下来的人工林当中,还有相当部分生长不
Afforestation is a complex system engineering. In addition to organizing and mobilizing issues of a managerial nature, there are many complicated scientific and technological issues involved. The basic requirement is to determine different forest species and choose different tree species according to different conditions and adopt different technical measures. Therefore, in order to ensure good achievements in afforestation work, we must do a good job in planning and designing before afforestation and design and construct according to the plan. Since the early 1950s in our country, the scale of afforestation has been continuously expanded. However, several investigations confirmed that the area for reforestation in the past 30 years does not exceed 20-30% of the total afforestation area. And in the preserved plantations, there is still a considerable part of the growth is not