移栽期对烤烟气象条件及性状的影响

为促进优质烤烟生产，提高烤烟的经济效益，采用4种移栽期处理对‘K326’的生育期气象条件、农艺性状和经济性状进行对比分析，以期得到最佳移栽期。试验结果表明，随着移栽期的推迟，旺长期的平均气温先降后升，而成熟期和大田全生育期的平均气温先升后降，气温均适宜烟叶生长；旺长期的降水量随移栽期推迟呈现出明显增多的趋势，移栽过早，旺长期的降水不能满足优质烟叶生产；4个处理的日照时数相差不大，均能满足优质烟叶生长需要。不同移栽期处理的烤烟株高、产量和产值差异显著，适当推迟移栽可以获得较好的农艺性状和较高的经济效益。

Effect of Transplanting Date on Meteorological Conditions and Characteristics of Flue - cured Tobacco

In order to promote the high quality of flue - cured tobacco, and improve the economic efficiency of flue - cured tobacco, meteorological conditions in the growth stage of k326, agronomic and economic characters using 4 kinds of transplanting date were contrasted to get the best of transplanting date. The experimental results showed that, as the transplanting date delay, the average temperature during strong growth period descended and then rose, but the average temperature during mature and all growing period rose and then descended. The average temperature was all suited to tobacco growing. The precipitation during strong growth period showed a trend of increased significantly. If the transplanting date was premature, precipitation during strong growth period could not meet the high quality tobacco production. There is little difference in sunshine hours of 4 treatments, and it could meet the needs of high quality tobacco growth. Plant height, yield and value of flue - cured tobacco with the different transplanting dates were different significantly. Appropriately delaying transplanting date could get better agronomic traits and high economic efficiency.