| 水分胁迫下外生菌根对马尾松幼苗养分吸收的影响 |
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| 引用本文： | 王艺,丁贵杰.水分胁迫下外生菌根对马尾松幼苗养分吸收的影响[J].林业科学研究,2013,26(2):227-233. |
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| 作者姓名： | 王艺 丁贵杰 |
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| 作者单位： | 贵州大学造林生态研究所,贵州贵阳,550025 |
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| 基金项目： | 国家863项目(2011AA10020301);贵州省人才基地建设项目(黔人颁发[2009]9号);贵州省创新团队建设项目(黔科合人才团队2011)及贵州大学研究生创新基金(省研农2009002) |
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| 摘 要： | 利用接种褐环乳牛肝菌、鸡油菌、彩色豆马勃、土生空团菌的马尾松苗,在温室采用盆栽方法,研究水分胁迫下,不同菌根化苗对养分的吸收情况.结果表明:在水分胁迫下,外生菌根能显著提高马尾松幼苗对N、P、K的吸收.随胁迫加剧,菌根化苗N、P含量和磷酸酶活性均呈先增后降趋势,在中度胁迫时达最大,其中,接种褐环乳牛肝菌l的苗对N、P吸收效果最好,分别比对照增加56.65％和44.32％；接种彩色豆马勃和褐环乳牛肝菌1的马尾松苗的K含量随胁迫的加剧先增后降,在轻度胁迫时达最大,分别比对照增加221.99％和200.00％.N和K主要分布在叶中,而P在根、茎、叶中分布较均匀,菌根的形成有利于马尾松幼苗N、K的上行运输.在轻度和中度胁迫下,接种褐环乳牛肝菌1对提高马尾松苗N、P、K的吸收和含量效果最好,同时也促进了马毛松幼苗生长和抗旱能力的增强.
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| 关 键 词： | 马尾松 水分胁迫 外生菌根 幼苗养分 |
| 收稿时间： | 2/5/2012 12:00:00 AM |
Influence of Ectomycorrhiza on Nutrient Absorption of Pinus massoniana Seedlings Under Water Stress |
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| WANG Yi and DING Gui-jie.Influence of Ectomycorrhiza on Nutrient Absorption of Pinus massoniana Seedlings Under Water Stress[J].Forest Research,2013,26(2):227-233. |
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| Authors: | WANG Yi and DING Gui-jie |
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| Institution: | Institute of Forestation and Ecology, Guizhou University, Guiyang 550025, Guizhou, China;Institute of Forestation and Ecology, Guizhou University, Guiyang 550025, Guizhou, China |
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| Abstract: | The effect of ectomycorrhiza on nutrient absorption of potted seedlings of Pinus massoniana under water stress was studied in greenhouse, by inoculating Pisolithus tinctorius, Cenococcum geophilum, Cantharellus cibarius Fr., Suillus luteus(L.:Fr.) Gray respectively. The results showed that ectomycorrhiza could significantly improve the absorption of content of N, P and K in drought stress. The contents of N, P and phosphatase activities of mycorrhizal seedling increased at first and then decreased with the water stress increase, and reached the maximum in moderate stress. The seedling of inoculation Suillus luteus1 had the best absorption to N, P, and increased 56.65% and 44.32% respectively compared to control group. The content of K in mycorrhizal seedling inoculating Pisolithus tinctorius and Suillus luteus1 increased at first and then decreased with the increase of water stress, and reached the maximum in the light stress. They increased by 222% and 119% respectively compared to the control group. N and K mainly distributed in the leaf, while P equally distributed in root, stem and leaf. The formation of mycorrhizal benefited the transportation of N and K upward. Inoculating Suillus luteus1 in mild and moderate stress had the best comprehensive effect in absorption and content of N, P and K, and at the same time it could promote seedling growth and enhance seedling drought resistance. |
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| Keywords: | Pinus massoniana water stress ectomycorrhiza seedling nutrient |
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