不同缓释肥对烤烟生长的影响

以烤烟品种K326为材料,通过田间试验研究了不同缓释肥对烤烟生长发育、产量和品质的影响。结果表明,施用缓释肥可以使烟株生长趋于整齐,团棵期过后仍能保持旺盛的生长势,现蕾期提前,整个烟株的生育期延长。烤烟植株在整个生育期内的干物质积累量增加。在烟株的农艺形状上主要表现为烟株的有效叶片数降低,但是烟株节距、茎围却有明显提高。缓释肥的施用不仅会一定程度上提高烤烟植株的产量和产值,而且可以大幅度提高烤烟的均价和中上等烟比例。

Effects of Various Slowly -released Fertilizer Varieties on Growth of Flue -cured Tobacco

The influences of various slowly-released fertilizer(SRF) varieties on the growth,yield and quality of flue-cured tobacco variety K326 were studied through field experiment.The results showed that the application of SRF could make tobacco plants grow more uniformly,still keep flourishing growth vigor after resettling stage,advance the budding stage and extend the whole growth and developmental duration of tobacco plants.After applying SRF,the accumulation of dry matter in the whole growth period of tobacco plants increased,and the number of effective leaves reduced,but both the pitch and stem girth of tobacco plants obviously increased.In addition,the application of SRF not only could enhance the yield and production value of flue-cured tobacco to a certain extent,but also could greatly improve the average price of flue-cured tobacco and the proportion of superior tobacco.