山东植烟土壤与烤烟微量元素分布特点及相关分析

Distributions and Correlations of Micronutrient Contents between Soil and Flue-cured Tobacco Leaves of Shandong Province

为摸清山东烟区土壤-烤烟系统中微量元素的分布特点,采用野外调查及室内化验分析相结合的方法,研究了土壤与烤烟中Fe、Mn、Cu、Zn的交互关系。结果表明,山东烟区土壤有效Fe、Mn丰富,有效Cu适中,有效Zn较低。山东烟区烤烟Fe、Mn含量较高,Cu、Zn含量适中。逐步回归与偏相关分析结果显示,烟叶中的微量元素都与土壤中对应的微量元素有效态含量具有显著或极显著的正相关关系,微量元素之间表现出一定的协同或拮抗关系。本试验结果表明,山东烟区土壤中应适当补充Cu、Zn两种微量元素,特别是质地较粗的土壤中这2种元素缺乏较严重。

Field investigation and laboratory analysis were conducted to study the distributive characteristics and relationships of micronutrients between soil and flue-cured tobacco of Shandong Province, thus, to provide a theoretical basis for the flue-cured tobacco production. The results showed that the contents of available Fe and Mn in the plough horizon were plentiful, while those of Cu and Zn were moderate and insufficient, respectively;in most tobacco-growing areas of Shandong, the Fe and Mn contents were in the range of high quality tobacco production in China, and the Cu and Zn contents were moderate. Multiple linear regression analysis and partial correlation analysis showed that the micronutrient contents in tobacco leaves were positively correlated with the available micronutrient contents in soil, there existed synergistic and antagonistic effects among the micronutrients. Therefore, Cu and Zn fertilizers should be applied more in Shandong.