不同移栽期对烤烟叶片大小·产质量·化学成分的影响

摘要

烟草的生长发育受到多种因素的影响，为探究移栽期对烟叶产量和品质的影响及寻找江西抚州烟区烟草的最佳栽植期，本研究对不同移栽期的烟叶大小、产质量及化学品质进行检测。结果表明，随着烤烟移栽期的推迟，叶片逐渐变宽，下部叶尤为明显；烟叶的产量逐渐增加，上等烟的比例是先上升后下降；均价和单位面积产值都以T3期的最高；烟叶的总糖含量、钾含量随移栽期推迟逐渐增大，总氮含量、烟碱含量逐渐减小；烟叶的糖碱比、氮碱比等化学成分也以T3期的最协调。比T3期（3月9日移栽）提前或推迟10 d（T1期或T5期）移栽对生产优质烟叶有不利影响。抚州地区3月14日移栽（ T3期）较为适宜。%Tobacco growth is affected by many factors .To explore the effect of transplanting stage on yield and quality of tobacco leaf and to look for the best planting time for tobacco in the tobacco areas in Fuzhou ,the leaf size ,yield and quality ,and chemical quality of the tobacco leaves trans planted in different periods were test -ed.The results showed that with the transplanting period delayed ,blades widened gradually ,especially the lower leaves;the tobacco leaf production increased gradually ,the proportion of superior tobacco went down after ris-ing firstly;the average price and output per unit area in T 3 were the highest;the total sugar content ,potassium content of tobacco leaves varied increased gradually with the transplanting period delayed , the total nitrogen and nicotine contents decreased gradually;the ratio of sugar to alkali ,and the ratio of nitrogen to alkali in T 3 was the most harmonious .10 days in advance ( T1 ) of delayed ( T5 ) against the transplanting stage in T 3 ( March 9) had an adverse effect on production of high quality tobacco leaves .March 14 ( T3 ) was the more appropriate in Fuzhou .