人参叶面积预测模型建立

Establishment of Forecasting Model of Leaves Area on Panax ginseng

以5年生人参成熟叶片为研究材料,采用人参小叶长、宽数据,结合统计软件进行人参小叶面积、复叶面积和总叶面积回归分析,建立回归方程。结果表明,采用人参小叶长宽之积(L·W)估测小叶面积、复叶面积和全株总叶面积结果比较好,回归方程分别为:y=-0.0009x2+0.7033x+0.0295,相关系数R^2=0.9908;y=0.0001x2+0.5934x+16.694,相关系数R2=0.9764;y=-0.000 065 3x^2+0.5154x+58.5838,相关系数R^2=0.9889。研究表明,用人参小叶长宽之积(L·W)估测小叶面积、复叶面积和全株总叶面积是可行的,相关系数在0.97以上。同时研究发现利用人参掌状复叶对称性,测量第1、2、3小叶长、宽数据即可估算复叶面积。该研究提供了一个更简便、快速有效的检测人参叶面积的方法,明显降低了田间调查工作量,具有较好的应用价值。

In order to investigate the determination of ginseng leaf area simply and quickly climax leaves of 5-year- old Panax ginseng were used to measure leaf length, leaf width and leaf area. Through the regression equation optimization, a mathematical model to predict leaf area was set up. The results indicated that the regression effect of regression equation model was satisfactory, that the simple leaf area, compound leaf area and the total leaf area of plant were agreed well with the product of length and width of ginseng leaf （L· W）. The regression equation were as follows： y=-0.0009x^2＋0.7033x＋0.0295, y=0.0001x^2＋0.5934x＋ 16.694 and y=-0.000 065 3x^2＋ 0.5154x＋58.5838, respectively, the coefficients were 0.9908, 0.9764 and 0.9889, respectively. It was also discovered that compound leaf area could be estimated by determining length and width of the first, the second and the third single leaf as the palm-like compound leaf was symmetrical. This model had a high prediction accuracy quickly and simply, which could be applied to scientific research and production.