留叶数对稻茬烤烟生长和主要养分积累的影响  

Number of Leaves Remained Influences the Growth and Nutrient Accumulation of Flue-Cured Tobacco in Rice-Tobacco Rotation

作　　者：周观星 李思军 成明珠 谭志鹏 江智敏[3] 李生 吴文信 邓小华[2] ZHOU Guan-xing;LI Si-jun;CHENG Ming-zhu;TAN Zhi-peng;JIANG Zhi-min;LI Sheng;WU Wen-xin;DENG Xiao-hua(Chenzhou Branch of Hunan Tobacco Company,Chenzhou 424400,PRC;College of Agronomy,Hunan Agricultural University,Changsha 410128,PRC;China Tobacco Zhejiang Industrial Co.,Ltd.,Hangzhou 310008,PRC)

机构地区：[1]湖南省烟草公司郴州市公司,湖南郴州424400 [2]湖南农业大学农学院,湖南长沙410128 [3]浙江中烟工业有限责任公司,浙江杭州310008

出　　处：《湖南农业科学》2024年第1期24-28,共5页Hunan Agricultural Sciences

基　　金：郴州市烟草专卖局科技项目(CZYC2022JS06);浙江中烟科技重点项目(ZJZY2023B001)。

摘　　要：为明确郴州市桂阳县烟稻复种连作烟田中云烟87的适宜留叶数,设计留叶数13~20片的8个处理,研究了不同留叶数对烤烟农艺性状、叶面积指数、株型、干物质以及氮磷钾养分积累与分配的影响。结果表明:随着打顶留叶数的增加,烤烟株高增加,氮、磷积累量减少,叶面积指数、干物质积累量、钾积累量呈先增加后减少的趋势;留叶数13~14片的株型为短筒型,留叶数15~18片的株型为筒型,留叶数19~20片的株型为鼓型;留叶数过少会造成烟株矮小,影响中、下部烟叶发育;留叶数过多会降低烟田的叶面积指数,影响烟叶产量和品质。重点考虑烟株和烟叶的干物质量,认为在桂阳烟区稻茬烤烟云烟87的留叶数以17~19片较为适宜。This study aims to determine the appropriate number of leaves remained of'Yunyan 87'in the field with rice-tobacco rotation in Guiyang,Chenzhou,Hunan.Eight treatments with 13-20 leaves remained were designed.The agronomic traits,leaf area index(LAI),plant architecture,and accumulation and distribution of dry matter,nitrogen,phosphorus,and potassium of flue-cured tobacco in different treatments were measured,on the basis of which the optimum number of leaves remained was determined.The results showed that with the increase in the number of leaves remained,the flue-cured tobacco presented increased plant height,reduced accumulation of nitrogen and phosphorus,and firstly increased and then decreased LAI and accumulation of dry matter and potassium.The flue-cured tobacco plants with 13-14,15-18,and 19-20 leaves showcased short barrel,barrel,and drum architectures,respectively.Too few leaves remained led to short tobacco plants and affected the development of middle and lower tobacco leaves,while too many leaves remained reduced the LAI and affected tobacco yield and quality.Considering the plant traits and dry matter of tobacco leaves,we suggested that 17-19 leaves should be remained for'Yunyan 87'in rice-tobacco rotation in the study area.

关 键 词：留叶数 烤烟 农艺性状 株型 养分积累与分配 

分 类 号：S363[农业科学—作物栽培与耕作技术]