摘要
为探明土壤类型对烤烟非挥发性有机酸组成含量的影响,以云南新兴烟区施甸县3种不同土壤类型烟叶及其对应的土样为材料,利用相关分析、多元线性回归和通径分析,系统地分析了烤烟非挥发性有机酸组分与土壤养分含量间的关系。结果表明:(1)3种土壤类型烤烟中多元有机酸存在极显著的差异,高级脂肪酸中的月桂酸和肉豆蔻酸存在显著差异,而其棕榈酸、亚油酸、油酸和硬脂酸则差异不明显。(2)3种土壤类型烟叶多元有机酸总量与土壤pH、速效钾含量呈显著正相关,其相关系数都为0.69;与土壤有机质、碱解氮和速效磷呈极显著负相关,其相关系数分别为-0.94,-0.95,-0.88;而高级脂肪酸含量与土壤养分含量相关性则不明显。(3)用烟叶多元有机酸总量跟土壤养分进行通径分析可知,土壤中各养分对烟叶多元有机酸总量直接影响作用最明显的是有机质,其余依次为pH值、碱解氮、速效钾、速效磷,但其仅有pH值为正效应。
To explore the effects of soil types on the content of non-volatile organic acid composition in Flue-cured tobacco,this essay analyzes non-volatile organic acids in tobacco components and the relationship between soil nutrient content by using correlation analysis,multiple linear regression and path analysis with different soil types and tobacco samples from Shidian County,Yunnan.The results indicate that the relationship is：（1） There are significant differences in organic acid contents in three types of soil;the contents of lauric acid and myristic acid of higher falty acids are significantly different,but the differences in the contents of palmitic acid,linoleic acid,oleic acid and stearic acid are not significant.（2） There is a significant positive correlation between the contents of multiple organic acids in tobacc on leaves on three types of soil and soil ph and available K,the correlation coefficient is 0.69;and the multiple organic acid contents are negatively correlated significantly with soil organic matter,nitrogen and available phosphorus,the correlation coefficients are-0.94,-0.95,-0.88 respectively;and higher fatty acid contents and soil nutrient content are not significantly correlated,（3） From the path analysis of the total amount of multiple organic acids in tobacco leaves and soil nutrients,it can be concluded that organic matter,among all the soil nutrients,has most obvious and direct impact on the total amount of multiple organic acids,followed by pH,nitrogen,available potassium,available phosphorus,but only pH value has positive effect.
出处
《江西农业大学学报》
CAS
CSCD
北大核心
2011年第6期1050-1055,共6页
Acta Agriculturae Universitatis Jiangxiensis
基金
国家烟草专卖局项目(11020041012)
云南省烟草公司项目(04A02)
