摘要
通过土壤与烟叶对应取样研究了恩施烟区土壤总硒的分布特征和烟叶硒与土壤硒的关系。结果表明,恩施烟区土壤硒有98%以上的区域处于"足"和"富"以上的水平,平均含量达到了(0.63±0.56)mg/kg。烟叶硒含量上部叶最高(0.18±0.13)mg/kg,中部叶和下部叶基本相当(0.17±0.11)mg/kg。不同部位烟叶硒含量与土壤硒含量的相关性表现出明显差异,上中部叶与土壤硒含量的相关性达到了极显著正相关(r分别为0.686**、0.480**,r0.01为0.302,n=70),下部叶硒含量与土壤硒含量的相关性未达到显著水平(r=0.123,n=70)。土壤"富"硒区烟叶硒含量(上、中、下部分别为0.24、0.19和0.20 mg/kg)明显高于"少"硒区和"足"硒区(上、中、下部分别为0.17、0.14和0.14 mg/kg),"富"硒区中上部烟叶硒含量与土壤硒含量表现出极显著正相关,在"少"硒区和"足"硒区烟叶硒含量与土壤硒含量没有明显的相关性。
Soil Se distribution and the relationship between total Se content of soil and tobacco leaf in tobacco planting area of Enshi were studied by soils and plants sampling analysis. The results showed that, above 98% of the tobacco planting area of Enshi was sufficient or high in soil total Se content, with an average of （0.63±0.56） mg/kg. Higher total Se content in upper part tobacco leaves （0.18±0.13） mg/kg was observed, the average total Se content of middle part tobacco leaves and lower part tobacco leaves were （0.17±0.11） mg/kg, which were relatively lower. Total Se content of middle and upper part leaves were significantly positively correlated with soil total Se content, respectively （r=0.686^＊＊, 0.480^＊＊, r0.01=0.302, n=70）, whereas total Se content of lower part leaves were not positively correlated with soil total Se content （r=0.123, n=70）. Total Se content in tobacco leaves in high soil total Se content area was obviously higher than that in sufficient or low soil total Se content area. In high soil total Se content area, significantly positive correlations between total Se content of middle and upper part leaves and soil total Se content were observed, whereas in sufficient or low soil total Se content area, significantly positive correlation between them was not obserbed.
出处
《中国烟草科学》
CSCD
北大核心
2011年第A01期63-66,共4页
Chinese Tobacco Science
基金
国家烟草专卖局项目"卷烟品牌导向的烟叶生产体系研究--‘清江源’特色优质烟叶生产体系研究"(110200801039)
关键词
恩施
烟区
土壤
烟叶
硒
Enshi
tobacco planting area
soil
tobacco leaf
Se
