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选取生长状况良好、3年生的3种灌木八角金盘(Fatsia japonica)、杜鹃(Rhododendron simsii)和金边黄杨(Euonymus Japonicus)进行氮磷养分动态及其相关性研究,结果表明:(1)叶片中氮养分浓度变动在9.83~29.07 mg.g-1之间,而磷养分浓度变动在0.71~3.30 mg.g-1之间;茎干中的氮养分浓度为4.96~12.51 mg.g-1,而磷养分浓度为0.40~2.14 mg.g-1;根中氮养分浓度变动在2.55~17.09 mg.g-1之间,而磷养分浓度变动在0.29~2.62 mg.g-1之间。(2)不同栽植类型下灌木N与P养分浓度相关性不同:林缘>空旷>林内。(3)在不同栽植类型下各器官间N、P养分浓度相关性不同,栽植于空旷和林内条件下灌木各器官间的磷相关性比林缘条件下的灌木各器官间的磷相关性高。
Fatsia japonica, Rhododendron simsii and Euonymus Japonicus were selected to study the dynamics of nitrogen and phosphorus nutrition and their correlation in three growth years. The results showed that: (1) The variation of nitrogen nutrient concentration ranged from 9.83 to 29.07 mg.g-1, while the variation of phosphorus nutrient concentration ranged from 0.71 to 3.30 mg.g-1. The nitrogen concentration in stems ranged from 4.96 to 12.51 mg.g-1, While the phosphorus nutrient concentration was 0.40 ~ 2.14 mg.g-1. The variation of nitrogen nutrient concentration in roots was between 2.55 and 17.09 mg.g-1 while the phosphorus nutrient concentration varied between 0.29 and 2.62 mg.g-1. (2) The correlation of N and P nutrient concentration in shrubs under different planting types was different: forest margin> open space> forest. (3) The correlations of N, P nutrient concentration of different organs under different planting types were different. Phosphorus correlation among shrubs planted under open and in-forest conditions was higher than that among shrubs under forest edge condition .