不同土壤类型对烟叶主要化学成分的影响

研究了褐土、潮土和砂姜黑土3种土壤类型对烟叶主要化学成分动态变化的影响，结果表明，打顶前，烟碱含量减少，打顶后逐渐升高；烟草一生中可溶性糖含量有2个高峰期；K含量和总N含量呈降低趋势。采收期，叶片烟碱含量在不同土壤类型上的表现为：褐白＞砂姜黑土＞潮土；可溶性糖含量表现为：潮土＞砂姜黑土＞褐土；K含量表现为：褐土＞砂姜黑土＞潮土；总N含量表现为：潮土＞砂姜黑土＞褐土。烘烤品质方面，褐土上种植的烟叶最接近于优质烟叶标准，砂姜黑土最差。

Effects of different soil types on the chemical composition of tobacco leaf

Field experiment was conducted effects of 3 different soil types :Cinnamon soil,Alluvial soil and Shajian black soil,on the chemical composition of tobacco leaf from 2000 to 2001.The results showed that the content of nicotine decreased before toping and increased after toping.For the content of solution sugar,there were two peaks in the whole life. Contents of K and total N decreased from transplantion to harvest stage. During mature stage, the nicotine content was that Cinnamon soil >Alluvial soil>Shajiang black soil, the content of solution sugar was that Alluvial soil>Shajiang black soil>Cinnamon soil, K content was that Cinnamon soil>Shajiang black soil>Alluvial soil, and the total N content was Alluvial soil >Shajiang black soil>Cinnamon soil. As to the quality of flue cure, Cinnamon soil was the best among the three types of soil,and Shajiang black soil was the worst.