Study On Characteristics Of Soil Nutrients And Chemical Composition Of Tobacco In Jidong County Tobacco-growing Areas

The article is on the basis of Ji Dong,Mu Dan Jiang,Heilongjiang Tobacco Area,determinating and evaluating the soil nutrients in tobacco-growing areas of the Status of soil Suitability status,leaf chemical composition,as well as differences in the chemical composition of tobacco leaf and tobacco abroad compared.The main findings are as follows:(1)Soil pH value of the average performance of Jidong County tobacco area was 7.82±1.03,alkaline soil,on 70.87 percent of the tobacco planting soil sample pH value between 7.5 to 8.5),is less suitable range of tobacco cultivation,soil PH range suitable for the growth of flue-cured tobacco is 5.5-7.5.Soil organic matter can reflect the level of potential soil fertility,soil organic matter content Jidong average performance(3.30 ± 0.86)%;Jidong County showed high organic matter content in tobacco planting area of the most soils.Soil available nitrogen,available pHospHorus and potassium contents of the performance were(122.12±43.21)mg/kg,(103.98±101.44)mg/kg,(356.76±220.52)mg/kg.soil suitability evaluation index of tobacco-growing areas are located in Jidong County between 50-60,soil suitability overall stable situation,SFI integrated average of 60.6,indicating the suitability of the soil condition overall in class 2,"more appropriate"level.(2)Comparative results Jidong different chemical composition of flue-cured tobacco station display:the presence of the chemical composition of flue-cured tobacco among the different stations are some differences between the different levels of this difference in different performance.Total sugar Jidong area of tobacco smoke,reducing sugar,crude protein,high chlorine content,total alkaloids,total nitrogen,potassium content is low,the difference between two of sugar,sugar-nicotine ratio,higher than the base nitrogen,potassium and chlorine ratio bias low.Jidong Chemical Components of Flue availability of evaluation results show:Xinhua station flue-cured tobacco chemical component availability index average of 60 points or more,is a "good" grade.Yonghe,comprehensive and Blue Ridge chemical composition of flue-cured tobacco smoke station availability index average between 40-60 minutes,it is a "medium" level.(3)Comparison of the results at home and abroad show that the chemical composition of tobacco:tobacco leaf chemical components and Jidong County of Heilongjiang Dongning Fen producing the most similar,followed by areas of Yunnan Xiangyun Fen,Luzhou-producing areas and Ningyuan,Hunan,Henan Xiangcheng County,Guizhou Michizane County middle and flavor-producing areas in Guizhou Kaiyang and foreign tobacco in Zimbabwe,Brazil quite different.