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湖南烤烟化学成分与土壤有机质含量的关系

许自成1;王林1;王金平2;肖汉乾3   

  1. 1河南农业大学农学院, 郑州 450002;2信阳师范学院, 信阳 464000;3湖南省烟草公司, 长沙 410007
  • 收稿日期:2006-03-24 修回日期:2006-07-01 出版日期:2006-10-10 发布日期:2006-10-10

Relationships between chemical components of flue-cured tobacco leaf and soil organic matter content in Hunan Province of China

XU Zicheng1; WANG Lin1; WANG Jinping2; XIAO Hanqian3   

  1. 1College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China;2Xinyang Normal College, Xinyang 464000, China;3Tobacco Corporation of Hunan Province, Changsha 410007, China
  • Received:2006-03-24 Revised:2006-07-01 Online:2006-10-10 Published:2006-10-10

摘要: 以湖南烟区烤烟样品和对应的土壤样品为材料,研究了烤烟化学成分与土壤有机质含量的关系。结果表明,土壤有机质含量总体水平较高,平均为39.06 g·kg-1±11.90 g·kg-1;烤烟化学成分均存在着不同程度的变异,烟叶总氮和总钾含量较高,烟碱、总糖、氯和还原糖含量适宜;烤烟烟碱与土壤有机质含量的关系符合线性加平台模型,土壤有机质出现平台的转折点为36.25 g·kg-1,与之对应的平台阶段的烟碱含量为3.00%;硝酸盐、亚硝酸盐含量随土壤有机质含量的增加而增加(P<0.01);石油醚提取物含量则有随土壤有机质含量的增加而减少的趋势;土壤有机质含量分组后,多重比较分析表明烟碱、总氮、硝酸盐、亚硝酸盐、石油醚提取物、钾、氯离子、总氮/烟碱、还原糖/烟碱、钾/氯在组间差异均达到5%的显著水平,而总糖和还原糖含量在组间差异不显著。

关键词: 覆膜开孔率, 累积蒸发量, 入渗定额

Abstract: With the flue-cured tobacco and soil samples from the Hunan tobacco-growing areas as test materials, this paper studied the relationships between the chemical components in flue-cured tobacco leaf and the content of soil organic matter. The results indicated that in Hunan tobacco-growing areas, soil organic matter content was generally high, with a mean of 39.06 g·kg-1±11.90 g·kg-1. The total N and K contents in flue-cured tobacco leaf were relatively high, while the nicotine, total sugar, chlorine, and reducing sugar contents were appropriate. The relationships between the nicotine content in flue-cured tobacco leaf and the organic matter content in soil could be described by linear-flat model, with the turning point at flat stage being 36.25 g·kg-1 of soil organic matter content, and 3.00% of nicotine content. The nitrate and nitrite contents in tobacco leaf increased with increasing soil organic matter content, while the content of petroleum ether extract seemed to show a decreasing trend. After grouping the soil organic matter contents and by using multiple comparison method, significant differences at 0.05 level were found in the contents of nicotine, total N, nitrate, nitrite, petroleum ether extract, potassium and chlorine, and the ratios of nitrogen to nicotine, reducing sugar to nicotine, and potassium to chlorine in flue-cured tobacco leaf among the groups, but no significant differences were observed in the contents of total sugar and reducing sugar.

Key words: Open holes ratio of plastic mulch, Cumulative evaporation, Perforated rate