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一、造林密度和配置方式所谓造林密度是指单位面积上造林的株数或穴数;所谓配置方式即一定密度的种植点在造林地上的排列形式。采用合理的造林密度,设计巧妙的配置方式,对提高林业生产之经济效益,加速绿化进程具有极其重要的意义。造林密度是一个比较复杂的问题,相同课题的试验研究,可以得出完全相反的结论。以其对树高生长的影响为例,汉密尔顿(G. J. Hamilton)等人总结了英国从1935年开始,统一安排的6个树种134个系列的造林密度试验,认为有“越密越高的趋势”。1967年丹麦人分析了除中国、苏联和日本以外的各个国家针叶树造林的结果,认为在一定范围内多数情况下树高生长随密度
I. Afforestation density and allocation methods The so-called afforestation density refers to the number of afforestation units per unit area or number of holes; the so-called distribution of the planting point that is a certain density in the afforestation site arrangement. Adopting reasonable afforestation density and cleverly designed arrangement is extremely important for improving the economic benefits of forestry production and accelerating the greening process. Afforestation density is a more complex issue, the same subject of experimental study, can be drawn to the opposite conclusion. Taking its effect on the growth of tree height as an example, GJ Hamilton et al. Summarized the afforestation density test of 134 series of six tree species that were uniformly arranged in the United Kingdom since 1935, and considered that there was “a trend of increasing density and higher density” . In 1967, the Danish analyzed the results of coniferous afforestation in various countries except China, the Soviet Union and Japan. In most of the cases, the growth of tree height with the density