摘要
[目的]探索牟定县各乡镇的轮作植烟土壤养分状况,为改善楚雄州烤烟产质量和植烟土壤可持续化利用水平提供理论依据。[方法]基于长期对牟定县植烟区耕作制度调查数据的基础上,于2018年对全县7个乡镇的植烟土壤进行0~20 cm取样。检测并分析土壤有机质、pH、电导率、总氮、水解性氮、速效磷和水溶性氯。[结果]全县植烟土壤有机质含量属于云南省植烟土样同类指标的中上水平,变异较小;牟定县植烟土壤pH平均值为6.43,符合优质烤烟栽培要求,其中33.85%的土样满足烤烟最适pH区间,变异较小;全县植烟土壤电导率变异较大,但有利于水溶态离子运动和烤烟生长;全县植烟土壤养分含量变异较大,较云南省植烟土样同类指标而言,其中有机质、速效磷属于中上水平,碱解氮、全氮属于较高水平,水溶性氯属于适宜水平;全县各乡镇中,以江坡镇最能代表全县pH和养分含量水平,安乐乡次之。根据主成分分析和聚类分析结果,牟定县植烟土壤可以分为4种类型。[结论]牟定县植烟区土壤pH和主要养分含量适宜优质烤烟生产,但应控制氮、磷化肥的过量施用,减小各乡镇的养分差异,保证烟叶的稳定优产。
[Objective]To explore the soil nutrient status of tobacco plantation in each township of Mouding County,and to provide scientific and theoretical basis for improving the quality of flue-cured tobacco production and sustainable utilization of tobacco plantation soil in Chuxiong.[Method]Based on the long-term survey data of the cultivation system in the tobacco planting area of Mouding County,the soil of tobacco planting in seven townships in the county was sampled from 0-20 cm in 2018.Soil organic matter,pH,electrical conductivity,total nitrogen,alkali hydrolyzed nitrogen,available phosphorus and water-soluble chlorine content were detected and analyzed.[Result]The soil organic matter content of tobacco-planted soils in the county was in the middle to upper level of similar indicators of tobacco-planted soils in Yunnan Province,with small variation.The average pH of soil planted with tobacco in Mouding County was 6.43,which met the requirements of high-quality flue-cured tobacco cultivation,of which 33.85%of the soil samples met the conditions of the optimum pH range for roasted tobacco,with small variation.The soil electrical conductivity of tobacco-planted soils in the county was highly variable,but it was favorable to the movement of water-soluble ions and the growth of flue-cured tobacco.The nutrient content of tobacco-planted soils in the county was highly variable,among which soil organic matter and available phosphorus were in the middle to upper level,alkali hydrolyzed nitrogen and total nitrogen were in the higher level,and water-soluble chloride was in the appropriate level compared with similar indicators of tobacco-planted soil samples in Yunnan Province.Among the townships in the county,Jiangpo Township best represented the county’s pH,soil organic matter and nutrient content levels,and Anle Township was second.According to the results of principal component analysis and cluster analysis,the soil for tobacco planting in Mouding County could be divided into four types.[Conclusion]The soil pH,soil org
作者
刘羿男
汪应华
肖毅为
吴佳
王永平
董少坤
丁从凯
胡小东
LIU Yi-nan;WANG Ying-hua;XIAO Yi-wei(Chuxiong Company of Yunnan Provincial Tobacco Corporation,Chuxiong,Yunnan 675000)
出处
《安徽农业科学》
CAS
2023年第1期151-157,共7页
Journal of Anhui Agricultural Sciences
基金
中国烟草总公司云南省公司科技项目(2020530000242029,2022530000241029)。
关键词
植烟土壤
PH
有机质
养分
牟定县
Tobacco planting soils
pH
Organic matter
Nutrients
Mouding County
