不同移栽期·种植密度和施肥量对烟叶产质量的影响

[目的]综合分析移栽期、种植密度、施氮量与烤烟(Nicotiana tabacum L.)烟叶香型的关系。[方法]结合烟株农艺性状指标、抗病性、原烟外观质量、烟叶内在化学成分及产量、产值等经济效益指标分析,在植烟区开展烤烟不同移栽期(4月25日、4月30、5月5日)、种植密度(120 cm×40 cm、120 cm×50 cm、120 cm×60 cm)和施肥量(45、90、135 kg/hm2)的探索研究。[结果]不同移栽期、种植密度和施肥量对烤烟生长发育和产质量的影响十分显著。4月25～30日移栽的烤烟产质量好,尤其以移栽期为4月25日最好,种植密度为120 cm×60 cm和施氮量为135 kg/hm2的种植条件比较适合植烟区的烤烟生产。[结论]该研究可为烤烟定向栽培提供更好的生产技术方案和理论支持。

Effects of Different Transplanting date,Planting Density and Fertilizer Levels on Yield and Quality of flue-cured Tobacco(Nicotiana tabacum L.)

[Objective] The purpose was to comprehensively analyze the correlation between transplanting date,planting density,fertilizer levels and flue-cured tobacco leaves flavor.[Method] The flue-cured tobacco transplanting date(April 25,April 30 and May 5),planting density(120 cm×40 cm,120 cm×50 cm,120 cm×60 cm) and fertilizer levels(45,90,135 kg/hm2) were explored and studied in tobacco planting area,combining with the analysis of flue-cured tobacco plants’ agronomic traits and disease resistance,the appearance quality of the raw flue-cured tobacco,economic efficiency indicators of flue-cured tobacco intrinsic chemical composition,yield and value.[Result] The results showed that different transplanting date,planting density and fertilizer levels had very significant effects on growth,development,yield and quality of flue-cured tobacco.Transplanting at April 25th-30th got flue-cured tobacco with high yield and good quality,especially transplanting at April 25th.The conditions of planting density 120 cm×60 cm and fertilizer level 135 kg/hm2 was better suitable for flue-cured tobacco production in tobacco planting area.[Conclusion] The study provides a better production technology program and theoretical support.