| 刘永霞.基于生物量的香蕉叶片主要几何属性研究[J].中国南方果树,2021,50(3): |
| 基于生物量的香蕉叶片主要几何属性研究 |
| Study on main geometric properties of banana leaves based on biomass |
| 投稿时间：2020-12-29 修订日期：2021-03-10 |
| DOI： |
| 中文关键词: 巴西蕉 香蕉叶 干重 几何属性 |
| 英文关键词:Brazil Banana Banana leaf dry weight geometric properties |
| 基金项目: |
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| 摘要点击次数: 1765 |
| 全文下载次数: 336 |
| 中文摘要: |
| [目的]构建基于生物量的香蕉叶片主要几何属性模型,为香蕉株型设计与调控提供理论依据.[方法]以巴西蕉为材料,设置不同N肥田间试验,并借鉴已有的巴西蕉叶面积建成模型，通过测量香蕉主茎不同叶位叶片长度和宽度及其对应的叶片干重, 分析了巴西蕉比叶重与叶位、主茎不同叶位最大叶片长与生物量、最大叶长与最大叶宽的关系，构建基于生物量的香蕉叶片主要几何属性模型.[结果] 比叶重与叶位的关系可用线性关系，叶长与叶重、叶宽与叶长的关系可用二次曲线方程表达.采用独立的试验资料检验模型, 比叶重与叶位的模拟值与实测值的根均方差(RMSE)分别为18.97和12.32g?m-2；叶长与叶重、叶宽与叶长的模拟值与实测值的根均方差(RMSE)分别为11.162和5.365cm；各模型的dap<15%，模型精度较高。 [结论]基于生物量的巴西蕉叶片主要几何属性模型可较好地模拟不同氮肥条件下香蕉主茎不同叶位叶片的主要几何属性,为生长模型与形态结构模型的结合奠定了基础. |
| 英文摘要: |
| [Objective] To provide a theoretical basis for banana plant type design and regulation, this text has built a biomass-based model of the main geometric attributes of banana leaves.
[Method] Using Brazilian banana as the material, this text has set up field trials with different level of nitrogen fertilizers, and learn from the existing leaf area model of Brazilian banana. This text has measured the leaf length and width at different leaf positions of the main stem of banana and the corresponding leaf dry weight, and has analyzed the relationship among the specific leaf weight and leaf position, the maximum length of leaf blade at different leaf positions of the main stem and biomass, the maximum leaf length and the maximum leaf weight, and has built a biomass-based model of the main geometric attributes of banana leaves.
[Result] The relationship between specific leaf weight and leaf position is linear, and the relationship between leaf length and leaf weight, leaf width and leaf length could be expressed as quadratic curve equation. Using independent test data to test the model, the root mean square error (RMSE) of the simulated and measured values of specific leaf weight and leaf position are respectively 18.97 and 12.32, and the RMSE of leaf length and leaf weight are respectively 11.162 cm and 5.365 cm; the dap of each model is less than 15%, and the model accuracy is very high.
[Conclusion] The model of Brazilian banana leaves based on biomass can better simulate the main geometric attributes of banana leaves at different leaf positions under different level of nitrogen fertilizers, and lay a foundation for the combination of growth model and morphological structure model. |
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