多年来,我场择伐迹地一直采用林冠下补植的办法进行红松更新,但效果不好,不论是地径生长还是高生长都比较缓慢。相反,栽植在皆伐迹地上的红松,长势却很好。为了弄清光照对红松幼令期生长的影响,我们有目的作了些调查。现将调查情况整理如下,供参考。一、不同光照下红松生长情况通过对苇塘沟经营区林冠下补植的红松和迹地更新的红松样地调查发现,林冠下补植的 Over the years, I have chosen to cut under the canopy replanting approach to Korean pine, but the effect is not good, both the diameter growth and high growth are relatively slow. On the contrary, the Korean pine, planted on the deforestation, grows very well. In order to understand the impact of light on the young pine growth, we have done some investigations. The investigation is now organized as follows for reference. First, the growth of pine under different light conditions Through the reed Tonggou operating under the canopy planting Pinus koraiensis and traces of the new Korean pine plots found that under canopy replanting