| 预测木薯茎叶生物量的数学模型 |
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| 引用本文： | 邓权权,左应梅,唐建,辛阳,罗海伟,杨重法.预测木薯茎叶生物量的数学模型[J].中国农学通报,2012,28(3):143-147. |
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| 作者姓名： | 邓权权 左应梅 唐建 辛阳 罗海伟 杨重法 |
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| 作者单位： | 海南大学农学院,海南儋州,571737 |
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| 基金项目： | 海南省重点学科建设项目“木薯干物质生产与分配的生理生态研究”（Xkxm0811-09） |
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| 摘 要： | 为了构建预测木薯茎叶生物量的数学模型。调查了5个木薯品种茎秆的基部、中部、上部茎粗及茎秆长度和各个分枝的基部粗度、长度等形态学指标,并将生物量分为茎秆和分枝两部分,分别探讨这两部分生物量与相关形态指标的关系。通过多种模型的反复拟合比较,结果以主茎复合幂函数与分枝集合函数的统合方程的拟合效果较好,均方根误差RMSE为104.2,相关系数r为0.9110,拟合优度较高。并且本模型的拟合效果明显优于前人提出的预测木薯茎叶生物量的数学模型。
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| 关 键 词： | 木薯 茎叶生物量 形态学指标 数学模型 |
| 收稿时间： | 2011/6/27 0:00:00 |
| 修稿时间： | 2011/10/24 0:00:00 |
A Mathematical Model on Estimating Stem-Leaf Biomass of Cassava |
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| Deng Quanquan
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Zuo Yingmei
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Tang Jian
,
Xin Yang
,
Luo Haiwei
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Yang Zhongfa.A Mathematical Model on Estimating Stem-Leaf Biomass of Cassava[J].Chinese Agricultural Science Bulletin,2012,28(3):143-147. |
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| Authors: | Deng Quanquan Zuo Yingmei Tang Jian Xin Yang Luo Haiwei Yang Zhongfa |
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| Institution: | (College of Agronomy, Hainan University , Danzhou Hainan 571737) |
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| Abstract: | In order to establish a mathematical model that can forecast the stem and leaf biomass of cassava, several morphological indexes of five cassava varieties were investigated, which included the stem length, the stem diameter in upper, middle and lower parts of cassava, and the length and diameter of each branch. The biomass of stem and branches were studied, and the relationship was analyzed between the two parts and relevant morphological indexes. By comparing a variety of models, it concluded that the integration equation which combined composite power functions on stem and set functions on branches was the best. The RMSE was 104.2, correlation coefficient was 0.9110, and the fitting effect was quite good. And this model was definitely much better than those previously-mentioned mathematical models on forecasting the stem and leaf biomass of cassava. |
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| Keywords: | cassava stem-leaf biomass morphological index mathematical model |
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