密度和氮肥互作对烤烟生长及产质量的影响  

Effects of Interaction Between Nitrogen Application Rate and Planting Density on Growth, Yield and Quality of Flue-cured Tobacco

作　　者：张喜峰[1] 

机构地区：[1]宝鸡市烟草公司陇县分公司,陕西陇县721200

出　　处：《农学学报》2015年第4期68-72,共5页Journal of Agriculture

基　　金：陕西省特色烟叶开发与研究重大专项"浓香型特色优质烟叶开发"(ZDZX2011-001)

摘　　要：采用大田裂区试验设计,研究氮密互作对烤烟主要生育时间、农艺性状和产质量的影响,探明‘辽烟17’适宜施氮量、密度。结果表明,氮用量一定时,随密度增加,脚叶、顶叶成熟期均呈向后推迟的趋势,且大田生育期逐渐延长。不同处理对叶面积影响较大,相同氮用量下（除中氮组）,下部叶面积随密度的增加先升高后降低。相同施氮量下,随密度增加,产量、均价、产值、中上等烟比例均呈降低趋势;密度一定时,施氮量增加,产量逐渐升高,均价逐渐降低。综合分析,氮肥效应较大,密度次之,互作效应较小;氮肥用量在60.0-75.0 kg/hm^2,密度在15000-17250株/hm^2时,充分发挥氮密互作效应,有利于烤烟生长发育,产质量总体表现较好。A field experiment was conducted using split-plot experiment design i.e. three regimes of plantingdensity as main plots and nitrogen rate as sub-plots to investigate the effects of interaction between nitrogenapplication rate and planting density on main growth time, agronomic characters, grain yield and quality offlue-cured tobacco and determine the optimum nitrogen application rate and planting density of‘Liaoyan 17＇.The results showed that mature stages of both lower and upper leaf were put off under same nitrogen rate withdensity increasing. In addition, the effects of different treatments on leaf area were larger, and under the samenitrogen rate condition（except middle nitrogen group）, lower leaf area increased first and decreased later withdensity increasing. Under the same nitrogen rate condition, yield, average price, output value, percentage ofsuperior and medium tobacco decreased gradually when density increased; with nitrogen rate increasing, yieldincreased, but average price declined gradually under the same density condition. In consideration ofcomprehensive analysis, the responses from the nitrogen were greater than those from density and theirinteraction. The appropriate density and nitrogen rate for‘Liaoyan 17＇were 15000-17250 plants/hm^2and60.0-75.0 kg/hm^2, respectively, which could improve growth and development, yield and quality of flue-curedtobacco based on the interaction between density and nitrogen rate.

关 键 词：烤烟 密度 氮肥 生长 产质量 

分 类 号：S572[农业科学—烟草工业]