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林木的速生丰产是受树种、生长地环境条件和各项技术措施等因素的综合影响,只有在比较对照不同树种、不同环境条件和不同技术措施下所收到的速生丰产效果,并综合地分析研究产生速生丰产的原因,才能迅速的摸清林木速生丰产的规律。为此,林木速生丰产的研究工作有必要组成一个整体,对培育速生丰产试验林设计的主要依据以及观察事项和方法,也必须有较为一致的原则。现把中国林业科学研究院在林木速生丰产试验上所考虑到的原则摘要提出如下:
The fast-growing and high-yielding forest is affected by the comprehensive effects of tree species, growing environment conditions and various technical measures and other factors. Only the fast-growing and high-yield effects received under different tree species, different environmental conditions and different technical measures are compared and comprehensively analyzed To study the causes of fast-growing and high yield can we quickly find out the law of fast-growing and high-yielding trees. Therefore, it is necessary to make a research on fast-growing and high-yielding forest. The main basis for cultivating fast-growing and high yielding experimental forest and the observation items and methods must also have a more consistent principle. The summary of the principles considered by the Chinese Academy of Forestry in the experiment of fast-growing and high-yielding trees is as follows: