专分散收模式下云南省烤烟工商交接等级质量及其影响因素

本文利用2009—2011年把烟收购模式和2015—2017年专分散收模式共计6年的云南省工商交接等级质量监督检查数据，利用单因素方差分析了两种模式下5个主收等级(B2F、C2F、C3F、C4F和X2F)的工商交接等级合格率和相对一致性差异，并对等级合格率及其4个主要影响因素(混低、混部位、混杂和混青)做了相关分析。结果表明:(1)两种收购模式下的等级合格率和等级相对一致性总体较为一致，仅有X2F等级合格率、C3F和X2F等级相对一致性差异显著；(2)对烟叶等级合格率而言，四种因素(混低、混部位、混杂和混青)的影响大小在不同收购模式中是基本一致的，仅对X2F等级烟叶，在把烟收购模式下混青的影响大于混杂，散叶收购模式下则正好相反；(3)不同收购模式下，“混低”与等级质量的相关系数均为最高，且在专分散收模式下更为显著；(4)在专分散收模式下，“混青”和“混杂”的影响相对下降，“混部位”的影响对C3F和C4F等级烟叶上升明显。综上所述，控制“混低”和“混部位”是进一步提高“专分散收”模式烟叶等级质量的关键。 

Grade quality and its influencing factors of flue-cured tobacco handed-over from commerce to industry in Yunnan province in case of specialized grading and loose-leaf purchasing

Based on the quality supervision and inspection data of industrial and commercial transition grade in Yunnan province under the traditional bundle purchasing (TBP) mode from 2009 to 2011 and the specialized grading and loose-leaf purchasing (SG & LP) mode from 2015 to 2017, one-way ANOVA was carried out to analyze the qualified rate and relative consistency of the five main purchasing grades(B2F, C2F, C3F, C4F and X2F), and the correlation analysis was conducted on four major factors (mixed low grades, mixed variegated leaves, mixed cany leaves, and mixed stalk positions) affecting the qualified rate under the two modes.Results indicated that: (1) Under two purchasing modes, grade quality are generally consistent, except the grade qualified rate of X2F, grade relative consistency of C3F and X2F have significant differences between two modes.(2) The impact level of 4 influence factors exhibited the same tendency between two purchasing modes.However, for the grade X2F, impact of mixed cany leaves on the qualified rate was more significant than mixed variegated leaves in TBP mode, which was exactly opposite to that in SG & LP mode.(3) Under different purchasing modes, the correlation coefficient between "mixed low grades" and grade quality is the highest, and it is more significant in SG & LP mode.(4) The correlation coefficient of "mixed cany leaves" and "mixed variegated leaves" presented a downtrend in SG & LP mode, while that of mixed stalk positions increased significantly for grade C3F and C4F.Consequently, to further improve the grade quality in the new loose-leaf purchasing mode, effectively controlling the confused low grades and stalk positions is the key.