【摘要】 为了解不同品种辣木氮的动态变化规律,对西双版纳不同树龄的多油辣木、狭瓣辣木和‘PKM1’辣木叶、茎、枝中全氮含量及氮的生物累积量年动态变化特征进行比较研究。结果表明,辣木氮含量及氮生物累积量随品种、树龄、时间而变化。辣木全氮含量呈现:叶>茎>枝,14年树龄>3年树龄,随时间变化逐渐降低。叶中全氮含量呈现:多油辣木>‘PKM1’辣木>狭瓣辣木;茎中全氮含量呈现:‘PKM1’辣木和狭瓣辣木高于多油辣木;枝中辣木氮含量受品种、树龄的影响而呈现不同差异。辣木全氮累积量呈现:枝>叶>茎,狭瓣辣木和多油辣木最高,‘PKM1’辣木最低。更多还原

【Abstract】 In order to understand the nitrogen dynamic change rules of different moringa cultivars,a study was conducted to compare the annual variation of content and biological accumulation of total nitrogen in leaves,stems and branchs from Moringa oleifera,moringa stenopetala and moringa ‘PKM1’ with different tree ages in Xishuangbanna. The results showed that the content and biological accumulation of total nitrogen varied with seasons,tree age and cultivars. Content of total nitrogen showed a trend of leaf>stem>branch,14 year tree age>3 year tree age,and decreased gradually with time. The total nitrogen content was as follows:moringa oleifera>moringa ‘PKM1’>moringa stenopetala in leaves,‘PKM1’ moringa and moringa stenopetala>moringa stenopetala in stems,but the nitrogen content of moringa oleifera was different by influence of cultivars and age. The total nitrogen accumulation was in the order of branch>leaf>stem,and presented the highest in moringa stenopetala and moringa oleifera,but the lowest in ‘PKM1’ moringa.更多还原