通过对雷州半岛桉树人工林大面积土壤调查，揭示了桉树人工林地力退化的现状和特征。

This paper reveals the current status and characteristics of land capacity degeneration of eucalyptus plantation in Leizhou Peninsula through investigation.

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特别是关于人工林是否导致地力退化，针叶林是否引起土壤酸化，一直是国际上争论的焦点。

If the plantation leaded to soil degradation and if conifers cause soil acidification had been the focuses debated in the world.

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通过对雷州半岛桉树人工林大面积土壤调查研究和多点田间试验，揭示了桉树人工林地力退化的成因，提出了可行的防治措施。

By investigation and field trial, this paper reveals the causes of land capacity degeneration of eucalyptus plantations in Leizhou Peninsula, and put forward the control measures.

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