豫中烟区土壤与烤烟氯含量的地区分布特点及两者间的关系分析

Geographic Distribution of Chlorine Content in Soil and Fluecured Tobacco and the Relationship between them in Tobacco-growing Areas of Central Henan

【目的】为探究豫中主要烟区(许昌、平顶山、漯河)烤烟与土壤中氯含量的总体分布以及二者间的相关关系。【方法】采用典型相关分析的方法,分析了117份烤烟(C3F)样品土壤氯与烤烟氯含量。【结果】豫中烟区植烟土壤水溶性氯含量变幅为7.10~84.77 mg/kg,平顶山、许昌、漯河地区土壤氯含量均值分别为36.96、33.14和33.43 mg/kg;烤烟氯含量变幅为0.01%~1.07%,平顶山、许昌和漯河地区烤烟氯含量分别为0.32%、0.41%、0.43%,烟叶氯含量总体较适宜。平顶山、许昌、漯河三地区土壤水溶性氯含量处于极低和较低范围内的样本数所占比例分别为13.95%、15.56%、10.35%,均满足优质烟叶生产的需求;平顶山、许昌土壤氯含量分别有32.56%、33.33%的样本处在适宜范围内,有53.49%、51.11%样本相对较高;而漯河烟区适宜土壤氯含量样本占24.14%,处于较高范围的样本占65.51%,三地区变异系数大小从高到低依次为漯河>平顶山>许昌。土壤氯含量与烤烟氯含量之间存在极显著线性关系(R2=0.953 3,P<0.01)。【结论】为更好调控豫中烟区烤烟氯含量,应主要从土壤氯着手,同时综合考虑气候、海拔等其他因素。

[Purpose]In order to study the geographic distribution of the chlorine content in soil and flue-cured tobacco and their relationship in the tobacco-growing areas of Central Henan.[Method]A total of 117 soil and flue-cured tobacco leaf samples were analyzed by canonical correlation analysis.[Results]The soil water-soluble chlorine content among the whole tobacco-growing areas ranged from 7.10 to 84.77 mg/kg,mean value of three areas was as follows:Pingdingshan 36.96 mg/kg,Xuchang 33.14 mg/kg,Luohe 33.43 mg/kg;the chlorine content in flue-cured tobacco ranged from 0.01%to 1.07%,the chlorine content of tobacco from Pingdingshan,Xuchang and Luohe were 0.32%,0.41%,0.43%respectively,the chlorine content in flue-cured tobacco was appropriate at most of the areas;the sample proportion of Pingdingshan,Xuchang,Luohe were in very low and low ranges were 13.95%,15.56%,10.35%respectively,which all met the needs of high-quality tobacco production,had 32.56%and 33.33%of the soil chlorine content samples in Pingdingshan and Xuchang were in the appropriate range,53.49%and 51.11%of samples were relatively high;and the chlorine content in soil in Luohe area accounted for 24.14%in suit group and 65.51%in high group,the coefficient of variation among three regions from large to small was Luohe>Pingdingshan>Xuchang.There was a significant linear relationship between the chlorine content of flue-cured tobacco leaves and the water-soluble chlorine content of soil(R2=0.953 3,P<0.01).[Conclusion]In order to regulate flue-cured tobacco chlorine content better in the tobacco-growing areas of Central Henan,the soil chlorine content should be considered first,and other factors like climate,altitude also should be considered at the same time.