Effects of Different Typical Soil Textures on Quality of Tobacco Leaves

XU Dong-ya;SUN Jun-wei;JIAO Zhe-heng;SUN Wen-shu;XU Fa-hua;WANG Xin-zhong;HU Yan-xia;SHI Hong-zhi;College of Tobacco Science of Henan Agricultural University/National Tobacco Cultivation,Physiology and Biochemistry Research Center;Dali Tobacco Company of Yunnan Province;

Different Textures;;Typical soils;;Tobacco quality

Through field experiment with the same climate,effects of different typical soil textures( sandy loam,sandy and clay soil) on growth of tobacco leaf,and physical properties,chemical composition,pigment content and sensory quality of cured tobacco leaf were studied. Results showed that tobacco from sandy loam soil grew well,owned timely yellowing and maturity,good quality,moderate physical properties,coordinating chemical composition,full degradation of pigments and good sensory quality after curing. For sandy soil,tobacco grew excessively during the early stage and had slow growth and metabolism in the middle-late stage,nutrition consumed excessively,and cured tobacco had small leaf size,simple leaf heavy and leaf weight of unit leaf area,low nitrogen compounds and pigment content,high sugar content,good sensory quality of upper leaves and bad middle leaves. While tobacco samples,produced in clay soil,had large leaf size,simple leaf heavy and leaf weight of unit leaf area,high content of macromolecular substances,nitrogen compounds and pigment residues,good sensory quality of middle leaves and bad upper leaves. To conclude,sandy loam soil did good to high-quality tobacco. Therefore,reasonable measures taken to better sandy and clay soil,which made their physical properties similar to sandy loam's,were beneficial to produce high-quality tobacco.