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五华县旱地烟不同氮磷钾配比施肥技术研究的结果表明 ,在中氮磷水平下 ,烤烟产量、质量及产值随施钾比例的增加而提高 ;而在高氮磷条件下 ,增施钾肥虽可提高烤烟的质量 ,但产量及产值有下降的趋势。在氮磷钾比例为 1∶1∶2 .5时 ,烤烟产量随施氮量的增加而提高 ,而产值、均价及上等烟率在中氮条件下有所提高 ,在高氮条件下则降低。提出五华县烤烟的施肥以每 667m2 施氮 9kg、氮磷钾比例为 1∶1∶2 .5较适宜。
The results of different N, P, K fertilization techniques in dryland tobacco in Wuhua showed that the yield, quality and value of flue-cured tobacco increased with the increase of potassium application rate under medium N and P levels. Under high nitrogen and phosphorus conditions, Although potassium fertilizer can improve the quality of flue-cured tobacco, its output and output value have a tendency of declining. When the N, P and K ratio was 1: 1: 2.5, the yield of flue-cured tobacco increased with the increase of nitrogen application rate, while the output value, the average price and the superior tobacco rate increased under the medium nitrogen condition. Under the condition of high nitrogen Decrease. Proposed Wuhua flue-cured tobacco application of nitrogen per 667m2 9kg, N, P and K ratio of 1: 1: 2.5 more appropriate.