| 木麻黄自身他感作用影响因素及缓解 |
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| 引用本文： | 林武星.木麻黄自身他感作用影响因素及缓解[J].防护林科技,2006(6):1-5. |
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| 作者姓名： | 林武星 |
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| 作者单位： | 福建省林业科学研究院,福建,福州,350012 |
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| 摘 要： | 通过木麻黄不同无性系对木麻黄苗木的他感作用、木麻黄不同无性系苗木对木麻黄他感作用的反应、不同密度林分木麻黄他感作用、木麻黄伴生树种对木麻黄生长的影响及施肥对木麻黄自身他感作用影响等的研究,结果表明:(1)木麻黄不同无性系自身他感作用和对木麻黄自身他感作用物的抵抗力存在差别。粤601和粤701自身他感作用较弱,自毒能力较小。粤501、粤701和惠1对木麻黄他感作用物的抑制作用表现出较强的适应性和抵抗力。选择木麻黄无性系粤501、粤601、粤701和惠1进行木麻黄二代更新造林能减轻自毒影响。(2)林分密度影响木麻黄他感物质的分泌。高密度使木麻黄自身他感作用物质分泌增强、光合作用减弱、净光合速率降低、木麻黄生长抑制加剧。通过低密度造林或及时调整林分密度能有效缓解木麻黄自我生长抑制。(3)湿地松、马占相思和大叶相思叶浸液促进木麻黄苗木生长,用这3种树种作为木麻黄伴生树种进行造林能提高木麻黄生产力,减轻木麻黄自我生长抑制;而柠檬桉与木麻黄混交却抑制木麻黄生长。(4)木麻黄苗木在木麻黄自身他感作用下,施加Ca(H2PO4)2和KC l后,苗根重量和根系活力均增加,施磷、钾肥有利于缓解木麻黄自身生长抑制,提高其更新生产力。
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| 关 键 词： | 木麻黄 自身他感作用 影响因素 缓解 |
| 文章编号： | 1005-5215（2006）06-0001-05 |
| 收稿时间： | 2006-05-22 |
| 修稿时间： | 2006年5月22日 |
Study on Effect Factors and Relief of Self-Allelopathy of Casuarina |
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| LIN Wu-xing.Study on Effect Factors and Relief of Self-Allelopathy of Casuarina[J].Protection Forest Science and Technology,2006(6):1-5. |
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| Authors: | LIN Wu-xing |
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| Institution: | Fujian Academy of Forestry, Fuzhou 350012, Fujian, China |
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| Abstract: | Allelopathy of different clones of Casuarina on Casuarina seedlings,reflection of different clonal seedlings on Casuarina allelochemicals,effect of Casuarinas allelopathy of different density stand and associated tree species on the growth of Casuarina and effect of fertilizing on Casuarina self-allelopathy were studied.The results indicated that(1) The self-allelopathy of different clones and their resistance to Casuarina allelochemicals were different.The self-allelopathy of clone Yue 601 and Yue 701 were weaker than the others,and Yue 501,Yue 701 and Hui 1 showed strong adaptability and resistance to the inhibition of Casuarina self-allelopathy.The regeneration of Casuarina can relieve self-allelopathy through selecting clone Yue 501,Yue 601,Yue 701 and Hui 1 to plant.(2) The density of Casuarina stand affected the producing of self-allelopathy.High density strengthened the producing of Casuarinas,reducing the photosynthetic efficiency and inhibited the growth of Casuarina violently.The growth inhibition of Casuarina can be effectively relieved through low-density plantation or adjusting density of stand timely.(3) Leaf extract of Pinus elliottii,Acacia mangium and Acacia auriculaeformis could accelerate the growth of Casuarina seedlings.The 3 tree species planted with Casuarina mixedly as associated tree species can improve the productivity of Casuarina and relieve the growing inhibition of Casuarina.But the mixed stand of Eucalyptus citrodora and Casuarina inhibits the growth of Casuarina.(4)Under self-allelopathy of Casuarina,the weight of roots and root activity of Casuarina seedlings were increased after application of P and K.Fertilization can relieve the growth inhibition of Casuarina and improve its productivity. |
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| Keywords: | Casuarina self-allelopathy effect factor relief |
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