不同耕作方式对植烟土壤及烤烟质量的影响

为增加植烟土壤孔隙度、降低土壤容重,进而改善土壤物理结构,从而达到提高植烟土壤质量、提升烤烟品质的目的。本试验以云烟87为试验材料,采用随机区组试验设计,设置了T1旋耕、T2松地和T3翻地三种耕作方式。结果表明,在烟草整个生育期内,T1处理对植烟土壤速效钾含量有较好的影响；T2处理对植烟土壤碱解氮含量、速效磷含量以及烟草大田前期(移栽后30-60d)的土壤有机质、可溶性有机氮含量影响较好；T3处理对烟草大田后期(移栽后90-120d)的有机质以及可溶性有机碳含量有较好的影响；此外,相较于T1处理,T2、T3处理都能够提高烤烟烟叶的总糖和还原糖含量、降低烟碱含量。总的来说,相较于旋耕,松地和翻地对植烟土壤和烤烟质量的影响更好。

Effects of different Tillage methods on Tobacco Planting Soil and Tobacco Quality

In order to increase the porosity of Guiyang tobacco planting soil, reduce the bulk density of soil, and then improve the soil physical structure, so as to achieve the purpose of improving Guiyang tobacco planting soil quality and improving the quality of flue-cured tobacco. This test takes Yunyan87 as the test material, randomized block design was used, three tillage methods of T1 Rotary tillage, T2 Scarification and T3 Turn soil are set. The results showed that,during the whole growth of tobacco, T1 treatment has a good influence on rapidly available potassium content of the tobacco planting soil; T2 treatment has a good influence on the alkali hydrolyzed nitrogen content, rapid available phosphorus content, soil organic matter content and soluble organic nitrogen content of early tobacco field(30-60d after transplanting); T3 treatment has a good influence on the organic matter content in the late tobacco field (90-120d after transplanting), and the soluble organic carbon content; In addition, the T2? T3 treatment can improve the total sugar and reducing sugar content, can reduces the nicotine content of flue-cured tobacco compared with T1 treatment. Overall, Compared with the rotary tillage, scarification and turn soil have better effects on the quality of tobacco planting soil and flue-cured tobacco.