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本文介绍前东非农林业研究组织集团,现肯尼亚农业研究所于1955—1977年完成的一项试验。试验的目的在于以肯尼亚种源的柳桉(EuealypTus saligna)与澳大利亚种源的柳桉和巨桉(E.grandis)进行薪材生产能力的长期比较。整个试验是由轮伐期俱为5年的一代实生林,两代萌芽林以及另一代轮伐期为七年又八个月的萌芽材终伐所组成。四次轮伐综合结果表明,巨桉所收获的层积材积分别比肯尼亚柳桉和澳大利亚柳桉多2％和19％。终伐时,肯尼亚柳桉产量却分别比澳大利亚柳桉和巨桉多9％和15％。就长期的轮伐来说,本试验表明,肯尼亚柳桉还是比巨桉更为可靠。
This article describes an experiment completed by the former East African Agroforestry Research Group in 1955-1977 by the Kenya Institute of Agricultural Research. The purpose of the experiment was to compare long-term fuelwood productivity with Eucalyptus tus saligna, a provenance of Kenya, and E. grandis and E. grandis provenance from Australia. The entire experiment consisted of a 5-year-old live forest, two generations of sprouting forest and another end of the sprouted material with a rotation of seven years and eight months. The results of the four rounds of rounding showed that the accumulated volume of Eucalyptus grandis accumulated more than 2% and 19% more than that of A. canola and A. canaria. At the end of the cut, Kenyan eucalyptus production was 9% and 15% more than that of Australian willow and giant eucalyptus, respectively. For long-term rotations, this experiment shows that Kenya willow is more reliable than Eucalyptus grandis.