漂浮育苗条件下营养液初始氮浓度对烟苗生长及生理特性的影响  

Effects of Initial Nitrogen Concentration on Growth and Physiological Characteristics of Tobacco under the Condition of Floating Seedling System

作　　者：钱宇[1] 汪文杰 伍德洋 张再刚 兰彦娜 徐经年[3] QIAN Yu;WANG Wen-jie;WU De-yang(Liangshan Company of Sichuan Tobacco Company,Xichang,Sichuan 615000;Chizhou Company of nhui Tobacco Company,Chizhou,Anhui 247100)

机构地区：[1]四川省烟草公司凉山州公司,四川西昌615000 [2]安徽省烟草公司池州市公司,安徽池州247100 [3]安徽省农业科学院烟草研究所,安徽合肥230031

出　　处：《安徽农业科学》2018年第19期35-37,共3页Journal of Anhui Agricultural Sciences

基　　金：安徽省烟草公司重点烤烟项目(20150551008)

摘　　要：[目的]漂浮育苗条件下调节育苗池内营养液初始氮浓度,以促进皖南烟区烟苗生长发育。[方法]以常规漂浮育苗营养液配置方法为对照,设置营养液初始氮浓度分别为150、200及250 mg/kg共3个处理,检测烟苗生长及生理特性。[结果]营养液初始氮浓度设置范围内,初始营养液初始氮浓度提高能促进烟苗生长发育,轻微改善烟苗的抗逆性。[结论]在皖南烟区漂浮育苗方式下,将出苗时营养液初始氮浓度由100 mg/kg提高到150~200 mg/kg有利于烟苗的生长发育。[Objective]To adjust the initial concentrations of nitrogen in the seedling pool under the condition of floating seedling system,and to promote the growth and development of tobacco seedlings in Southern Anhui Province.[Method]With normal application of nutrient as CK,initial concentrations of nitrogen was desgined as 150,200 and 250 mg/kg. The growth and physiological characteristics of tobacco seedlings were detected under different concentrations.[Result] Within the designed range,enhancing the initial nitrogen concentration could promote the development and growth of tobacco seedlings,slightly enhanced the stress resistance of tobacco seedlings. [Conclusion]Under the condition of floating seedling system in Southern Anhui Province,enhancing the initial concentrations of nitrogen from 100 mg/kg to 150-200 mg/kg were beneficial to the growth and development of tobacco seedlings.

关 键 词：初始氮浓度 烟苗 生长 生理特性 

分 类 号：S572[农业科学—烟草工业]