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微量元素对尾叶桉幼林生长的影响

杨曾奖 徐大平 陈俊勤 刘玉粦

杨曾奖 徐大平 陈俊勤 刘玉粦. 微量元素对尾叶桉幼林生长的影响[J]. 华南农业大学学报, 2005, 26(2): 91-94. DOI: 10.7671/j.issn.1001-411X.2005.02.023
引用本文: 杨曾奖 徐大平 陈俊勤 刘玉粦. 微量元素对尾叶桉幼林生长的影响[J]. 华南农业大学学报, 2005, 26(2): 91-94. DOI: 10.7671/j.issn.1001-411X.2005.02.023
YANG Zeng-jiang~1,XU Da-ping~1,CHEN Jun-qin~2,LIU Yu-lin~2. Effects of micronutrients on the growth of Eucalyptus urophylla[J]. Journal of South China Agricultural University, 2005, 26(2): 91-94. DOI: 10.7671/j.issn.1001-411X.2005.02.023
Citation: YANG Zeng-jiang~1,XU Da-ping~1,CHEN Jun-qin~2,LIU Yu-lin~2. Effects of micronutrients on the growth of Eucalyptus urophylla[J]. Journal of South China Agricultural University, 2005, 26(2): 91-94. DOI: 10.7671/j.issn.1001-411X.2005.02.023

微量元素对尾叶桉幼林生长的影响

基金项目: 国家自然科学基金资助项目 (396 30 2 4 ),广东省水利厅科研项目“高效水土保持林营建及植被恢复技术的研究”的内容之一

Effects of micronutrients on the growth of Eucalyptus urophylla

  • 摘要: 为研究桉树的微营养,在花岗岩发育的严重水土流失立地上开展了尾叶桉施肥试验.结果表明:微量元素的缺乏不同程度地影响了尾叶桉的生长,特别是硼素的缺乏.在施用大量元素肥料的同时,硼的添加使得尾叶桉生长显著加快;4.5年生时,全素肥料处理的尾叶桉胸径、树高生长是缺硼处理的230.2%和173.5%.在不添加硼素的情况下,不仅严重影响了生长,同时表现出典型的硼素缺乏症状:枝条组织坏死成肿瘤状,叶腋间可见丛状腋芽,枝条和干型畸形生长.
    Abstract: A fertilizer experiment was carried out to study the effects of micronutrients on the growth of Eucalyptus urophylla on a seriously eroded hilly land where soils are developed from granite. Results showed that deficiency of micronutrients had a negative effect on tree growth of E. urophylla incoordinately, especially while boron (B) was absent. Tree height and DBH growth under all nutrients treatment had 73.5% and 130.2% higher than those in the B deficient treatment at 4.5 years after planting, respectively. Without B application, tree grew very slowly and had very typical B deficient symptoms, such as bad tissue of young branches, emergence of multiple buds in axillary, and unusual growth of stems and branches.
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  • 刊出日期:  2005-04-09

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