种植密度及留叶数对延边生态区烤烟主要含氮化合物含量的影响

[目的]探索种植密度及留叶数对烤烟含氮化合物含量的影响。[方法]以烤烟品种龙江911为试材,在2006~2007年研究了3种密度(13500、16500、19500株/hm2)和3种留叶数(18、20、22片/株)下烤烟含氮化合物含量。[结果]种植密度及留叶数对烤烟含氮化合物含量有明显的影响。[结论]不同处理相比较,密度16500株/hm2、留叶数22片/株的处理最好,其次为密度16500株/hm2、留叶数20片/株的处理,密度13 500和19500株/hm2的处理稍差。

Effects of Plant Population and Remained Leaves Number on Contents of Main N Containing Compounds in Flue-cured Tobacco

[Objective] The objective of the research was to explore the effect of plant population and the remained leaves number on the contents of main N containing compounds in flue-cured tobacco.[Method] During 2006-2007,a field experiment was employed to study the contents of main N containing compounds under three plant population(13 500,16 500 and 19 500 plants per hectare) and the remained leaves number(18,20 and 22 leaves per plants) using a tobacco cultivar Longjiang 911.[Result] Plant population and remained leaves number had a great effect on contents of main N containing compounds.[Conclusion] Among all treatments,the treatment of 16 500 plants per hectare and 22 leaves per plant was the best,the treatment of 16 500 plants per hectare and 20 leaves per plants took second place,and the treatments of 13 500,19 500 plants per hectare were slightly inferior.