【摘要】 为了探明移栽期对广元烟区烤烟株型和产质量的影响，以四川广元常年移栽期(4月30日)为标准，设置了4个移栽期处理，分别为对照(T0),T1提前7 d、T2为提前14d和T3为提前21 d。调查和分析了4个不同移栽期对烤烟生育期、农艺性状、株型、经济性状以及品质的影响，结果表明，不同处理烤烟的生育期表现不同，T2生育期最短，为122d,T0生育期最长，为137 d;提前移栽对烟株生长发育有促进作用，其中T2效果最佳。株型方面，T2处理烤烟为长筒型，其他处理均为腰鼓型; T1和T0为腰鼓型，相比长筒型光照不充分。各处理产量差异较小，表现为T2 > T1 > T0，且T2处理下烟叶等级更高，优质烟叶占比更大，均价最高，经济效益最高，综合表现较优，T2内在化学成分协调性最佳，各成分之间比例也更和谐。综合分析表明，在四川广元烟区适当提前移栽期是可行的，在4月16日前后移栽比较适宜。更多还原

【Abstract】 To investigate the effects of early transplanting on the plant type and quality of flue-cured tobacco in the Guangyuan tobacco-growing area,four transplanting period treatments were set up,including the control( T0),representing the conventional transplanting period in Guangyuan( April 30),T1 with transplanting advanced by 7 days,T2 by 14 days,and T3 by 21 days. The effects of the four transplanting periods on the growth period,agronomic traits,plant type,economic traits,and quality of flue-cured tobacco were investigated and analyzed. The results showed that:( 1) the growth period of flue-cured tobacco differed among treatments. T2 had the shortest growth period( 122 days),while T0 had the longest( 137 days).( 2) In terms of agronomic traits and plant type,early transplanting promoted the growth and development of tobacco plants,with T2 showing the best performance. Regarding plant type,tobacco plants under the T2 treatment exhibited a long cylindrical type,whereas those under the other treatments showed a drum-shaped type. Compared with the long cylindrical type,the drum-shaped plants in T1 and T0 received insufficient light exposure.( 3) In terms of yield and quality,yield differences among treatments were relatively small,following the order T2 > T1 > T0. Under the T2 treatment,tobacco leaves showed higher grades,a larger proportion of high-quality leaves,the highest average price,and the greatest economic benefits,indicating better overall performance.( 4) In terms of internal chemical composition,T2 showed the best coordination of internal chemical components,with more harmonious proportions among individual components. Overall,the results indicate that appropriately advancing the transplanting period in the Guangyuan tobacco-growing area of Sichuan Province is feasible,and transplanting around April 16 is suitable.更多还原