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Genetic Improvement of Tropical Eucalypts in China

机译:热带桉树的遗传改进

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摘要

About 1.54 million ha of Eucalyptus plantations have been set up in Guangdong, Hainan, Yunnan and Fujian provinces and in the Guangxi region. Their productivity has been about 5-10 m~3 ha~(-1) yr~(-1), much lower than in some other countries such as Brazil where growth rates as high as 100 m~3 ha~(-1) yr~(-1) have been recorded. One reason is that superior species, provenances, families and clones of Eucalyptus have not been planted on a large scale. This paper briefly outlines the steps taken for introduction of new lines of Eucalyptus and genetic improvement in several internationally supported projects. As a result, the general productivity of plantations has increased significantly in the past 10 years to about 20-25 m~3 ha~(-1) yr~(-1), and has reached as high as 60 m~3 ha~(-1) yr~(-1).
机译:广东,海南,云南和福建省和广西地区,已建立约15.4万公顷桉树种植园。它们的生产率大约是5-10米〜3 ha〜(-1)Yr〜(-1),远低于其他其他国家,如巴西,其中增长率高达100米〜3 ha〜(-1)已记录YR〜(-1)。一个原因是桉树的优越物种,繁殖,家庭和克隆尚未在大规模上种植。本文简要概述了在几个国际支持的项目中引入新的桉树和遗传改进所采取的步骤。结果,过去10年来,种植园的一般生产率在大约20-25米〜3 ha〜(-1)Yr〜(-1)中增加,并且已达到60米〜3 HA〜 (-1)Yr〜(-1)。

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