摘要
通过对渝东南烟区植烟土壤及烟叶成分进行分析,明确土壤pH值对渝东南烟区烟叶质量风格的影响。以渝东南典型烟区彭水、武隆两县149份土壤样品及其对应的烤后中部烟叶样品为材料,分别对植烟土壤pH、中部烟叶全钾、全磷、全氯、B、Mn、Fe、Cu、Ni、As等元素含量分布特性及相互关系进行研究。结果表明:(1)彭水、武隆两县植烟土壤以酸性土壤(4.5<pH≤5.0)为主,最适宜烤烟种植的pH所占比例分别为26.2%、36.8%,不同乡镇间土壤pH值总体差异性不大;(2)两县烟叶中各元素含量具有差异性,总体变异幅度以Cu、As、全氯、Mn较大,以全磷最小,且不同乡镇之间烟叶各元素含量不尽相同;(3)土壤pH值与中部烟叶各元素含量之间存在相关性,其中全磷含量与土壤pH显著正相关,Mn、Cu含量与土壤pH值显著负相关,Ni含量与土壤pH值极显著负相关。渝东南烟区植烟土壤酸化现象较为严重,通过改良酸化土壤在一定程度上可改善当地烟叶品质。
To assess the influence of soil pH on tobacco quality in southeast Chongqing, the soil samples and composition of tobacco leaves were analyzed. Taking 149 soil samples and the corresponding 149 flue-cured middle tobacco leaf samples from typicality smoke generation countries in southeast Chongqing, Pengshui and Wulong counties as materials, the distributive characteristics and relationship soil pH value and the contents of 9 elements （total K, total C1, total P, B, Mn, Ni, Cu, As, Fe） in middle tobacco leaves were analyzed. The results indicated that： （1） the tobacco planting soil of Pengshui and Wulong counties was mainly acid soil （4.5〈pH≤5.0）, and the pH of the soil samples was within the most appropriate range for the growth of flue-cured tobacco respectively accounted for 26.2% and 36.8%. In addition, there was only a little difference on soil pH value between different villages. （2） There was difference on the contents of elements of flue-cured middle tobacco leaves between Pengshui and Wulong counties, as the same between different villages. The maximum coefficients of variation were found in Cu,As,total CI,Mn, and the minimum was total P. （3） The soil pH value had correlation with the contents of elements of flue-cured middle tobacco leaves. And the content of total P had significant positive conelation with soil pH value, the contents of Mn and Cu had significant negative correlation with soil pH value, and the content of Ni had highly significant negative correlation with soil pH value. The results indicated that the soil acidification phenomenon in southeast Chongqing was serious. Furthermore, the tobacco quality in this area could be improved to a certain degree by changing the adidifieation soil.
出处
《广东农业科学》
CAS
CSCD
北大核心
2014年第16期18-22,共5页
Guangdong Agricultural Sciences
基金
广东中烟工业有限责任公司科技项目(QJ/GYG03.009/01)
关键词
渝东南
PH值
烟叶品质
主要元素
southeast Chongqing
pH value
tobacco quality
major elements
