安徽烟区土壤硫含量及其对烤烟硫含量的影响

目的]研究安徽省植烟土壤和烟叶硫含量的关系。方法]采集池州东至烟区和皖南烟区土壤普查样品,研究不同采样点不同植烟年限的土壤有效硫含量。研究重壤土、中壤土、轻壤土定位样品土壤有效硫含量和定位样品烟叶全硫含量,以及≥15、6~10和1~5 a不同植烟年限的定位样品土壤有效硫和定位样品烟叶全硫含量。结果]随着植烟年限的延长,施肥造成硫素在土壤中积累量增加;在植烟季节内随着土壤沙性的增强及土壤改良效果越明显时,土壤有效硫含量积累作用越强;土壤硫含量与烟叶硫含量无明显相关性;烟叶硫含量主要取决于植烟土壤质地类型,土壤黏性越大、酸度越强,越有利于硫素在烤烟叶中积累。结论]可为实现安徽省烟叶生产可持续发展提供科学依据。

Status of Soil Sulfur Content in Anhui Tobacco Area and Its Effects on Sulfur Content of Flue-cured Tobacco

Objective] To research the relationship between the tobacco-planting soil and the sulfur content of tobacco leaf in Anhui Province. Method] Soil census samples were collected from Dongzhi Tobacco Area of Chizhou City and South Anhui Tobacco Area.Soil available sulfur contents in different sampling sites in different planting years were researched.Soil available sulfur contents and tobacco leaf total sulfur contents in location sample were detected in heavy loam,medium loam soil and light loam soil,as well as the soil available sulfur and total sulfur contents in location sample in different planting years (≥15,6-10 and 1-5 a).Result] With the increase of planting years,sulfur accumulated in the soil due to the application of fertilizer.In the growth season of tobacco,soil improvement had obvious effect with the increase of soil sand property, and the soil sulfur had strong accumulation effect.There was no relationship between the sulfur content in the soil and the tobacco leaf.The leaf sulfur content was determined by the soil texture type.Stronger soil cohesion and soil acidity were good for the sulfur accumulated in the tobacco leaf.Conclusion] This research provides scientific basis for the sustainable development of tobacco leaf production in Anhui Province.