不同追肥时间对南平烤烟产质量的影响

探明南平烟区烤烟适宜追肥时间,为当地烤烟生产提供参考,在南平烟区3个试验点采用田间试验研究烟苗移栽后不同追肥时间对K326烤烟产质量的影响。结果表明:随着第2次追肥时间推迟烤烟的大田生育期延长,但综合农艺性状差异较小;在烟苗移栽后35d进行第2次追肥烟叶的经济效益最高,30d追肥烟叶的化学成分最协调,25d追肥烟叶的感官评吸质量最好,40d追肥烟叶的农艺性状、经济性状、化学成分和评吸质量均较差。南平烟区烤烟的第2次追肥时间以移栽后30d左右为宜,但在气温较低、雨水较少地区可提前到移栽后25~30d,而在雨水较多地区则可适当推迟至移栽后30~35d。

Effects of Various Fertilizer Topdressing Period on Flue-cured Tobacco Yield and Quality in Nanping Area

In order to explore the optimal topdressing period of flue-cured tobacco in Nanping area, and provide references for local flue-cured tobacco production, experiments of different fertilizer topdressing period were conducted in three experimental sites in Nanping area on flue-cured tobacco variety K326, thus to know the effects of different topdressing period on yield and quality of K326.Results: Field growth period was extended with the delay of topdressing date, and there were no significant difference between treatments in agronomic characters;Economic benefits of tobacco seedlings were the best with topdressing 35 days after transplanted;And the coordination of chemical components were the best with topdressing 30 days after transplanted;The tobacco sensor evaluation was the best with topdressing 25 days after transplanted.Topdressing 40 days after transplanted was of poor performance in agronomic traits, economic characters and smoking quality.Topdressing around 30 days after transplanted was optimum in Nanping tobacco producing area, proper early topdressing is suitable for areas with lower temperature and less rainfall (25~30 days), and topdressing could be delayed in areas with abundant rainfall (30~35 days).