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通过对杉木主伐迹地萌芽更新、整地造林和荒山造林的杉木林前 5年生长情况及投资情况调查表明 :杉木萌芽更新林与后两种更新杉木林比较 ,高生长量分别增加 3 9和 1 1倍 ,地径生长量分别增加 2 8和 1 4倍 ,营林投资分别为后者的 53 8%和 4 8 8%。同时 ,结合生产实际对杉木萌芽更新提出了一些关键技术措施。
The investigation on the growth and investment of Chinese fir plantations during the first 5 years of afforestation and afforestation of barren hills shows that the regenerated Chinese fir plantations are increased by 39 and 1 1 respectively compared with the latter two species of regenerated Chinese fir plantations Fold and diameter growth respectively increased by 28 and 14 times. The investment in forests was 53.8% and 488% of the latter respectively. At the same time, some key technical measures are put forward based on the actual production and regeneration of Chinese fir.