Study on the relationship between shrinkage rate and conventional physical indexes of tobacco based on redundancy analysis

doi:10.14088/j.cnki.issn0439-8114.2023.08.023

Abstract

Abstract: In order to explore the relationship between shrinkage rate of tobacco and traditional physical indicators, the leaf density, leaf thickness, equilibrium moisture content, smoldering time, tensile strength and shrinkage rate of 15 kinds of tobacco were measured, and the measurement results were analyzed by means of variance analysis, simple correlation analysis and redundancy analysis. The results showed that the producing area and position of tobacco leaf had significant effects on the shrinkage rate of tobacco, but the position had a greater effect; the shrinkage rate decreased with the decrease of position, and the range of reduction varied with different producing areas. There was a strong correlation between shrinkage rate and leaf density and leaf thickness. In addition, shrinkage rate raised with the increase of leaf density and leaf thickness. When studying the system composed of qualitative variables such as tobacco producing area and position and quantitative variables which were mainly composed of various physical and chemical indicators, redundancy analysis was a suitable method. It could not only analyze the impact of qualitative variables on quantitative variables, but also explore the correlation between quantitative variables based on the relationship between quantitative variables and qualitative variables, so as to understand the relationship between indicators in essence.

Key words: shrinkage rate, physical index, redundancy analysis, tobacco

CLC Number:

TS42

YANG Yang, YANG Ting, YANG Yu-bo, REN Ming-chao, ZHANG Jin, GONG Shuang, YANG Sheng-gang, WU You-xiang, WANG Jian-min. Study on the relationship between shrinkage rate and conventional physical indexes of tobacco based on redundancy analysis[J]. HUBEI AGRICULTURAL SCIENCES, 2023, 62(8): 144-148.

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