耕作与栽培2025，Vol.45Issue(2)：24-30,7.
湘南典型植烟土壤主要养分丰缺评价及其与pH值的关系研究
Evaluation of Major Nutrient Status and Its Relationship with pH in Typical Tobacco-Growing Soils of Southern Hunan Province
摘要
Abstract
To study the relationships between major soil nutrients,soil acidity and organic matter in typical tobacco-growing areas of southern Hu'nan,this study collected 833 soil samples(0-20 cm)from three main tobacco-growing areas of Guiyang in Chenzhou City and Lanshan and Ningyuan in Yongzhou City,in Hu'nan Province.The soil pH,organic matter content and major element contents were determined,and statistical analysis was conducted.The results showed that the average soil pH was 7.23,with 22.21％of the samples being in the suitable range,5.52％of the samples being below pH 5.5,and 72.27％of the samples being above pH 7.0.The average organic matter content was 45.55 g/kg,with 18.85％of the samples being in the suitable range,3.96％of the samples being be-low 25 g/kg,and 77.19％of the samples being above 35 g/kg.The average total nitrogen content was 2.56 g/kg,the average alkali-soluble nitrogen,available phosphorus and available potassium contents were 191.31 mg/kg,38.35 mg/kg and 207.91 mg/kg,respectively,and overall they were generally high.The coefficient of variation of each nutrient content was between 10.94％and 42.85％,which was considered to be of medium degree of variation.There was a quadratic function relationship be-tween the main soil nutrients and pH,and the organic matter,alkali-soluble nitrogen,available phos-phorus,available potassium and total nitrogen content all increased first and then decreased as pH in-creased.Overall,the soil nutrient content in tobacco-growing areas of southern Hu'nan was rich,but there were uneven distribution problems.In production measures,the'control nitrogen,appropriate phosphorus,increase potassium'fertilization principle should be adopted and differential management should be implemented.关键词
植烟土壤/土壤养分/pH值/有机质Key words
tobacco-growing soil/soil nutrients/pH value/organic matter分类
农业科技引用本文复制引用
贺佐胜,张莉,钱建财,范光奖,周富强,李虎,范幸龙,李强..湘南典型植烟土壤主要养分丰缺评价及其与pH值的关系研究[J].耕作与栽培,2025,45(2):24-30,7.基金项目
江苏中烟工业有限责任公司科技项目(H202226) （H202226）
