重庆市植烟土壤有效硼含量时空特征及其影响因素  

Spatio-Temporal Characteristics of Available Boron Content and Its Influencing Factors in Chongqing Tobacco-Growing Soils

作　　者：田野 周鑫斌[1] 韦育新[2] TIAN Ye;ZHOU Xinbin;WEI Yuxin(College of Resources and Environment,Southwest University,Chongqing 400715,China;China Tobacco Guangxi Industry Co.Ltd.,Nanning 530001,China)

机构地区：[1]西南大学资源环境学院,重庆400715 [2]广西中烟工业有限责任公司,南宁530001

出　　处：《中国烟草科学》2024年第4期19-27,共9页Chinese Tobacco Science

基　　金：广西中烟工业有限责任公司项目(2023450000340060);中国烟草总公司重庆市公司科技项目(B20221NY1314)。

摘　　要：研究重庆市植烟土壤有效硼的时空特征及其影响因素,为植烟区土壤硼素的调控与管理提供科学依据。采集重庆11个烟区总计2 513份耕作层(0~20 cm)土壤样本,测定分析有效硼和其他理化指标,并分析了其与烟田海拔高度、土壤类型、成土母质及土壤理化性质的关系。结果表明,重庆市植烟土壤有效硼总体含量较高,平均值为0.63 mg/kg。黔江、石柱、丰都、彭水、酉阳五个地区的土壤有效硼含量较高,涪陵、奉节、巫山、巫溪、武隆、万州六个地区的土壤有效硼含量适宜,与10年前相比,重庆植烟土壤平均有效硼含量增加了152%。由潮土和黄壤发育而来的土壤有效硼含量较高,而由冲积土发育而来的土壤有效硼含量较低。0.25~0.5 mm粒径团聚体与土壤有效硼有极显著的正相关关系。海拔、土壤pH、有机质和速效钾对有效硼均有显著影响。结论:调节土壤pH和土壤有机质含量可作为调控土壤有效硼的合理措施。针对土壤有效硼含量较高的地区如黔江、石柱,可减少硼肥的施用量以避免硼含量过高导致的毒害作用;而对于土壤有效硼含量较低的地区如武隆、万州,则需加大硼肥的施用量。In order to provide a scientific basis for the regulation and management of soil boron,this work studied the spatial and temporal characteristics of available boron content in Chongqing tobacco-growing soils and its influencing factors.A total of 2 513soil samples from the tillage layer(0-20 cm) were collected from 11 tobacco-growing regions in Chongqing,with measurements and analyses of available boron and other physical and chemical indicators.The relationship between available boron content and factors such as altitude,soil type,soil parent material,and soil physical and chemical properties was also examined.The results indicated that the overall available boron content in Chongqing's tobacco-growing soils is relatively high,with an average value of 0.63 mg/kg.The regions of Qianjiang,Shizhu,Fengdu,Pengshui,and Youyang exhibited relatively high soil available boron content,while the regions of Fuling,Fengjie,Wushan,Wuxi,Wulong,and Wanzhou had suitable levels.Compared to data from a decade ago,the available boron content in Chongqing's tobacco-growing soils increased by 152%.Soils derived from fluvo-aquic soils and yellow soils demonstrated higher available boron content,whereas those developed from alluvial soils had lower levels.There was a highly significantly positive correlation between 0.25-0.5 mm particle size aggregates and soil available boron.Altitude,soil pH,organic matter,and available potassium were all found to have significant effects on available boron content.In conclusion,adjusting soil pH and organic matter content can be effective measures to regulate soil available boron.For regions with high soil available boron content,such as Qianjiang and Shizhu,reducing the application of boron fertilizer can help avoid toxicity due to excessive boron levels.Conversely,in regions with lower soil available boron content,such as Wulong and Wanzhou,increasing the amount of boron fertilizer is necessary.This study provides a theoretical foundation for the scientific application of boron fertilizers in toba

关 键 词：重庆烟区 有效硼 植烟土壤 时空特征 影响因素 

分 类 号：S572.06[农业科学—烟草工业]