湖南湘西自治州烟区烤烟合理施磷研究

Study on Rational Application of Phosphorus Fertilizer in Flue-cured Tobacco Field in Xiangxi Autonomous Prefecture of Hunan

通过田间试验研究了不同的磷肥施用量对烤烟生长及烟叶品质的影响,结果初步表明,不同磷肥施用量对烤烟的农艺性状和经济性状都有一定的影响,随着磷肥用量增加,烤烟株高、茎围、有效叶、产量、产值呈增大的趋势;但是,当磷肥用量达到一定水平时,随着磷肥用量增加,烤烟均价、上中等烟叶比例略有降低,总的来看,磷肥用量在105～210 kg/hm2时,效果最好,烤烟产量、产值及中上等烟比例均最高。

Through the field test,the effects of phosphorus fertilizer application on the growth and leaf quality of flue-cured tobacco were studied.The preliminary results showed that phosphorus fertilizer application had some effects on tobacco agronomic characters and economic characters.The plant height,stem diameter,effective leaves,yield and output value had the increasing tendency along with the increase in the application rate of phosphorus fertilizer,but the average price and the proportion of good and medium tobacco leaves were slightly decreased when the application rate of phosphorus fertilizer increased to a certain level.On the whole,it got the best effects and reached the highest yield,output value and the proportion of good and medium tobacco leaves when the application rate of phosphorus fertilizer was 105~210 kg/hm2.