攀枝花市土壤温度和湿度与烤烟根系发育的关系  

Relationship between soil temperature and moisture and root growth of tobacco in Panzhihua City

作　　者：毛敏 潘兴兵 白加林[1] 刘余 袁家富[2] 徐祥玉[2] MAO Min;PAN Xing-bing;BAI Jia-lin;LIU Yu;YUAN Jia-fu;XU Xiang-yu(Panzhihua Branch,Sichuan Tobacco Company,Panzhihua 617026,Sichuan,China;Plant Protection,Soil and Fertilizer Institute,Hubei Academy of Agricultural Sciences,Wuhan 430064,China)

机构地区：[1]四川省烟草公司攀枝花市公司,四川攀枝花617026 [2]湖北省农业科学院植保土肥研究所,武汉430064

出　　处：《湖北农业科学》2022年第15期107-111,共5页Hubei Agricultural Sciences

基　　金：四川省烟草公司攀枝花市公司科技项目(2018004)。

摘　　要：为了明确土壤温度和水分对烟株根系发育的影响,进而为生产中调控根系生长提供数据支撑,在常规管理下对土壤温度和湿度进行高频率监测,同时检测烟株根系,分析温度和湿度的变化规律,研究监测期内平均温度和湿度与根系参数的关系。结果表明,在移栽后至收获结束,土壤温度呈逐步降低趋势,且上午时段平均温度低于下午时段;不论是上午还是下午,烟株根部土壤温度显著低于垄体。在移栽后至收获结束,烟株根部土壤湿度基本维持恒定,垄体土壤湿度呈先增加后稳定的趋势,烟株根部土壤湿度显著高于垄体。土壤温度和体积含水量与根系各项参数均有显著关系,其中总根长、总表面积和根尖数3项指标与不同时期和不同部位的土壤温度、土壤体积含水量均显著相关;平均直径和分叉数与垄体土壤体积含水量则显著相关。从时间上看,上午土壤温度与根系参数的相关性高于下午(相关系数数值更大);下午根际土壤体积含水量与根系参数之间的相关系数高于上午,下午垄体土壤体积含水量与根系参数之间的相关系数低于上午。In order to clarify the influence of temperature and moisture on the tobacco root development,and provide data support for regulating root growth in production,the changes of soil temperature and humidity under the conventional management were analyzed,and the relationship between average temperature and humidity and root parameters during the monitoring period was studied by de⁃tecting the roots of tobacco plants.The results showed that the soil temperature gradually decreased from transplanting to the end of har⁃vest,and the average soil temperature in the morning was lower than that in the afternoon,and the soil temperature of the rhizosphere was significantly lower than that in the middle of the two tobacco plants in both morning and afternoon.The soil moisture of the rhizo⁃sphere was basically maintained from transplanting to the end of harvest,and the soil moisture between the two tobacco plants in⁃creased beginning and then stabilized.The soil moisture of the rhizosphere was significantly higher than that between the two tobacco plants.The total root length,total surface area and number of root tips were significantly positive correlated with soil temperature and soil moisture,and the root average diameter and number of forks were significantly positive correlated with the soil moisture between the two tobacco plants.In terms of time,the correlation between soil temperature and root parameters in the morning was higher than that in the afternoon.The correlation coefficient between the soil moisture of the rhizosphere and root parameters in the afternoon was higher than that in the morning,while the correlation coefficient between the soil moisture between the two tobacco plants and root pa⁃rameters in the afternoon was lower than that in the morning.

关 键 词：土壤温度 土壤湿度 烤烟 根系发育 攀枝花市 

分 类 号：S572[农业科学—烟草工业]