| 密度对乐昌含笑幼苗养分积累的影响 |
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| 引用本文： | 列志旸,李洁,周彤彤,薛立.密度对乐昌含笑幼苗养分积累的影响[J].湖南林业科技,2016(1). |
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| 作者姓名： | 列志旸 李洁 周彤彤 薛立 |
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| 作者单位： | 华南农业大学林学与风景园林学院,广东 广州,510642 |
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| 基金项目： | 中央财政林业科技推广示范项目“广东省生态公益林培育技术推广”((2015)GDTK -07) |
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| 摘 要： | 以1年生乐昌含笑(Michelia chapensis)实生苗为试验材料,采用盆栽法,在美植袋中分别种植1、2、4、8株幼苗(密度Ⅰ、Ⅱ、Ⅲ和Ⅳ),研究密度对乐昌含笑幼苗N、P和K养分含量和贮量的影响。结果表明:不同密度乐昌含笑各器官对养分富集的能力均为KNP。乐昌含笑幼苗的N含量在各器官为叶根枝干的规律;P和K含量在密度Ⅳ下分别为枝根干叶和根叶枝干,其余密度为叶根枝干。乐昌含笑幼苗的N、P和K贮量随密度增大而增加,且根的养分贮量最大,枝的最小。
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| 关 键 词： | 乐昌含笑 密度 养分 |
Density effect on nutrient content and accumulation of Michelia chapensis plantations |
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| Abstract: | Density effect on nutrient content and accumulation of Michelia chapensis seedlings was studied using potted method.Seedlings were planted with four different densities:1,2,4 and 8 seedlings per bag (density Ⅰ,density Ⅱ, density Ⅲ and density Ⅳ).The results showed that N content decreased in the order of leaves >roots >branches >stem for M.chapensis seedlings.The P and K contents decreased in the order of branches >roots >stem >leaves and roots >leaves >branches >stem in different organs of density Ⅳ seedlings,respectively,and decreased in the order of leaves >roots >branches >stem in other density seedlings.Nutrient accumulation increased with increasing density.Generally, the nutrient accumulation was maximum in roots and minimum in branches among all organs. |
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| Keywords: | Michelia chapensis density nutrient |
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