植物营养与肥料学报2018，Vol.24Issue(2)：535-543,9.DOI:10.11674/zwyf.17163
移栽方式与施氮量对烤烟生长发育和产质量的影响
Effects of transplanting mode and nitrogen application rate on growth,development and yield of flue-cured tobacco
摘要
Abstract
[Objectives] Suitable transplanting methods and the combination of nitrogen application rates in tobacco planting areas of Shaanxi were compared,which provided a theoretical basis for the production of high quality flue-cured tobacco in Shaanxi tobacco-growing areas.[Methods] A split-plot experiment was conducted using tobacco cultivar of Qinyan 96 as materials in Baoji City,Shaanxi Province.The main plots were transplanting methods,including conventional transplanting,transplanted seedlings beneath the plastic film and transplanted seedlings uncovered inside cellular wells.The subplots were five levels of nitrogen,52.5,60,67.5,75 and 82.5 kg/hm2.Tobacco samples were collected to determine the activities of nitrate reductase and amylase at growing stages,and the contents of carbon and nitrogen metabolites and the yield and quality of tobacco were investigated at the maturity stage.[Results] The activities of nitrate reductase and amylase showed trends of increasing first and then decreasing in the whole growth period of flue-cured tobacco.In the conventional transplanting mode,the high nitrogen rate was suitable for high contents of carbon and nitrogen metabolites,agronomic and economic characters of flue-cured tobacco.In the membrane transplanting and well pit-type membrane transplanting,the nitrate reductase and amylase activities under the medium nitrogen rate were beneficial to the growth of flue-cured tobacco seedlings.Under the same nitrogen application rate,the growth,yield and quality of tobacco in well pit-type membrane transplanting were better than in the others.When the nitrogen application rate was 67.5 kg/hm2,the activities of nitrate reductase and amylase were the highest,the carbon and nitrogen metabolites and the agronomic and economic characters were high and stable.[Conclusions] The feasible transplanting mode in Weibei tobacco production area is the well pit-type membrane transplanting and the nitrogen rate is 67.5 kg/hm2.This combination could improve the carbon and nitrogen metabolism of flue-cured tobacco and promote its growth and development,and improve the economic benefit.关键词
烤烟/移栽方式/施氮量/碳氮代谢/产质量Key words
flue-cured tobacco/transplanting method/nitrogen application rate/carbon and nitrogen metabolism/yield and quality引用本文复制引用
吴薇,韩相龙,郑璞帆,韦成才,袁帅,张立新..移栽方式与施氮量对烤烟生长发育和产质量的影响[J].植物营养与肥料学报,2018,24(2):535-543,9.基金项目
中国烟草总公司陕西省公司科技项目(SXYC-2016-KJ-02) （SXYC-2016-KJ-02）
陕西中烟工业有限责任公司科技计划项目(JS-FW-2016-001)资助. （JS-FW-2016-001）
