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在75～135 kg/hm2的施氮水平范围内对烤烟品种南江三号进行了田间试验。结果表明,随着施氮量的增加,烤烟产量相应增加;当施氮量超过105 kg/hm2时,产值、中上等烟比例及均价都有所降低。综合考虑,烤烟品种南江三号以施氮量为105 kg/hm2时表现最好,产量、产值、中上等烟比例和均价较高,分别达2 382.45 kg/hm2,32 329.80元/hm2,86.19%和13.57元/kg。
A field experiment was conducted on the flue-cured tobacco variety Nanjiang 3 at a nitrogen application level of 75-135 kg / hm2. The results showed that with the increase of nitrogen application, the yield of flue-cured tobacco increased accordingly. When the nitrogen application rate exceeded 105 kg / hm2, the output value, middle-upper-class tobacco proportion and average price decreased. Taken together, the best performance was obtained when the amount of N application was 105 kg / hm2, and the yield and output value, middle-upper-class tobacco proportion and average price were higher, reaching 2 382.45 kg / hm2 and 32 329.80 yuan / hm2, respectively , 86.19% and 13.57 yuan / kg.