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湖南烟区土壤水溶性氯的地区分布特点及其与烤烟氯含量的关系

许自成1;郭燕1;肖汉乾2   

  1. 1河南农业大学农学院, 郑州 450002; 2湖南省烟草公司, 长沙 410007
  • 收稿日期:2008-04-17 修回日期:1900-01-01 出版日期:2008-12-10 发布日期:2008-12-10

Geographic distribution of soil water-soluble chlorine content and its relations to chlorine content in flue-cured tobacco leaves in Hunan tobacco-growing areas.

XU Zi-cheng1;GUO Yan1;XIAO Han-qian2   

  1. 1College of Agronomy, He’nan Agricultural University, Zhengzhou 450002, China; 2Tobacco Corporation of Hu’nan Province, Changsha 410007, China
  • Received:2008-04-17 Revised:1900-01-01 Online:2008-12-10 Published:2008-12-10

摘要: 分析了湖南烟区1341个土壤样品的水溶性氯含量与209个烤烟样品氯含量的空间分布特点。结果表明:湖南烟区土壤水溶性氯含量变幅为1.20~72.10 mg·kg-1,平均为(13.55±7.75) mg·kg-1,有40.6%的土样氯含量较低,尤以湘西地区土壤水溶性氯含量最低,为(8.88±8.04) mg·kg-1;湖南烟区烤烟氯含量变幅为0.15%~0.49%,平均为0.31%±0.09%,不同等级烤烟氯含量呈现出X2F>C3F>B2F的趋势,但等级之间差异不显著;根据土壤水溶性氯含量把样品分组后,对应的烤烟样品氯含量在组间差异达到了显著水平;烤烟氯含量与土壤水溶性氯含量之间存在极显著的线性关系(R2=0.8106,P<0.01)。

关键词: 丛枝菌根, 枳实生苗, 保护系统, 抗旱性, 作用机制

Abstract: A total of 1341 soil samples and 209 flue-cured tobacco leaf samples were collected from Hunan tobacco-growing areas, and their chlorine contents were determined. The soil water-soluble chlorine content in these areas ranged from 1.20 to 72.10 mg·kg-1, and averaged (13.55±7.75)mg·kg-1. 40.60% of the soil samples had a lower water-soluble chlorine content, with the lowest (8.88±8.04)mg·kg-1 in western Hunan. The chlorine content of flue-cured tobacco leaves was from 0.15% to 0.49%, and averaged 0.31%±0.09 %. The chlorine content of different grades flue-cured tobacco leaves had a trend of X2F>C3F>B2F, but the difference was not significant. After soil samples were grouped according to their water-soluble chlorine content, a significant difference was found in the chorine content of corresponding flue-cured tobacco leaves. There was a significant linear relationship between the chlorine content of flue-cured tobacco leaves and the water-soluble chlorine content of soil (R2=0.8106,P<0.01).

Key words: Arbuscular mycorrhiza, Poncirus trifoliata, Protective system, Drought tolerance, Functional mechanism