皖南烟区硫肥适宜用量及其对烤烟品质的影响研究

Optimum Sulphur Rate and Its Impact on Flue-cured Tobacco Quality in Southern Anhui

为明确皖南烟区硫素适宜用量和烤烟硫含量对烤烟内在品质的影响,选择皖南水田烟区植烟土壤设置硫素用量试验,分析烤烟硫素含量及施硫对烤烟经济性状的影响,确定硫素适宜用量,评吸不同处理烤烟内在品质,掌握硫对烤烟内在质量影响规律。结果表明:适量施硫可以促进烟株生长发育和叶片糖分积累;施硫使烟株各器官硫含量均增加,增幅的规律为根<茎<叶;相同施硫量条件下,全硫含量规律为根<茎<叶,叶片硫含量规律为下部叶<中部叶<上部叶;烤烟肥料硫素总含量不宜超过45.0 kg/hm2;施硫对烤烟全钾积累、烤烟外观、经济性状产生负效应,过量施硫降低烤烟评吸质量。因此,从提高烤烟质量的角度出发,应调整烤烟生产使用的肥料种类,适当降低肥料中含硫比例,可以进一步提升烤烟内在质量。

Different sulphur application rates were designed to determine the optimum sulphur application rate in southern Anhui tobacco area and its effect on the quality of flue-cured tobacco.The results showed that proper sulphur application could promote the growth and development of tobacco plants,sulphur application increased the sulphur content in all organs of tobacco plant,and the increment pattern of sulphur content was ranked as root<stem<leaf.The total sulphur content under the same sulphur application rate was ranked as root<stem<leaf.As for leaf,the maximum value of sulphur content was measured in above leaf layer,the minimum was in below leaf layer and the intermediate was in middle leaf layer.The total sulphur application rate of flue-cured tobacco should not exceed 45.0 kg/hm2,and appropriate sulphur application could enhance the leaf sugar accumulation.There was negative effect of sulphur application on the total potassium accumulation,external and economic traits.Excessive application of sulphur decreased smoking quality of flue-cured tobacco.Therefore,adjusting the type of fertilizer in flue-cured tobacco production and reducing the proportion of sulphur content in the fertilizer could enhance the intrinsic quality in southern Anhui Province.