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检测了我国主要烤烟产区的396份云烟87品种的C3F等级烟叶样品,分析了我国烤烟淀粉与物理指标的关系,并构建了二者的多元回归方程.结果表明:烤烟淀粉与叶面密度关系可用复合比级数曲线模型y=e(0.524 7+0.012 4x)描述,与平衡含水率关系可用指数模型y=1 873.971 7e-2.193x描述,与叶片厚度关系可用二次函数模型y=15.195 5-260.422 8x+1 494.051 2x2描述,与拉力关系可用对数模型y=6.111 8-2.673 7 lnx描述,与填充值关系可用逆矩阵模型y=-1.354 2+25.511 2/x描述,与单叶重关系可用幂函数曲线模型y=1.851x0.091 6描述,与含梗率关系可用混合曲线模型y=14.846 7×0.961 4x描述,与出丝率关系可用S模型y=e(4.862 6-306.049/x)描述,曲线回归方程相关性均达到极显著水平;烤烟淀粉含量与单叶重、叶面密度、叶片厚度和出丝率等指标呈极显著正相关关系,与填充值、平衡含水率、拉力和含梗率呈极显著负相关关系;通径分析表明单叶重、叶面密度、拉力、平衡含水率等物理指标对烤烟淀粉含量的直接作用绝对值较大.
The C3F grade tobacco samples from 396 Yunfu 87 cultivars in the main tobacco producing areas of China were detected and the relationship between the starch and the physical indexes of the tobacco in our country was analyzed and the multiple regression equations were constructed.The results showed that the relationship between starch and leaf density It can be described by the composite ratio series curve model y = e (0.524 7 + 0.012 4x), and its relation with the equilibrium moisture content can be described by the exponential model y = 1 873.971 7e-2.193x, and the relationship with the blade thickness can be expressed by the quadratic function model y = 15.195 5 -260.422 8x + 1 494.051 2x2 Description, the relationship between the available tension and the available logarithmic model y = 6.111 8-2.673 7 lnx description, the relationship between the filling value and the inverse matrix model can be used y = -1.354 2 +25.511 2 / x description, and single leaf weight Relationship can be described by the power curve model y = 1.851x0.091 6, and the relationship between the rate of containing the pedunculated mixed curve model can be used y = 14.846 7 × 0.961 4x description and the relationship between the rate of available silk S model y = e (4.862 6-306.049 / x), the regression equation of the curve reached the extremely significant level. The starch content of flue-cured tobacco had a significant positive correlation with single leaf weight, leaf density, Tensile and peduncle rates were significantly negative correlation Path analysis showed that the direct effect of physical indexes such as single leaf weight, leaf density, tensile force and equilibrium moisture content on the starch content of flue-cured tobacco was relatively large.