| 微量元素对尾叶桉幼林生长的影响 |
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| 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. |
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| 作者姓名： | 杨曾奖 徐大平 陈俊勤 刘玉粦 |
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| 作者单位： | 中国林业科学研究院,热带林业研究所,广东,广州,510520;广东省林业局,广东,广州,510173 |
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| 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 |
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| 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．
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| 关 键 词： | 微量元素 硼 尾叶桉 缺素症状 |
| 文章编号： | 1001-411X(2005)02-0091-04 |
Effects of micronutrients on the growth of Eucalyptus urophylla |
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| YANG Zeng-jiang,XU Da-ping,CHEN Jun-qin,LIU Yu-lin.Effects of micronutrients on the growth of Eucalyptus urophylla[J].Journal of South China Agricultural University,2005,26(2):91-94. |
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| Authors: | YANG Zeng-jiang XU Da-ping CHEN Jun-qin LIU Yu-lin |
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| Institution: | YANG Zeng-jiang~1,XU Da-ping~1,CHEN Jun-qin~2,LIU Yu-lin~2 |
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| 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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| Keywords: | micronutrients boron Eucalyptus urophylla deficient symptoms |
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