The field experiment were carried out to study the effect of different fertilizer application(the quantity of nitrogen was 90.0, 97.5, 105.0 kg/hm2; the ratio of nitrogen, phosphorus and potassium was 1:1.5:3.5)on the yield and upper leaves quantity of flue cured tobacco. The results list as follow: compared with treatment 1(N 90.0 kg/hm2)and treatment 2(N 97.5 kg/hm2), the yield of flue cured tobacco of treatment 3(N 105.0 kg/hm2)was increased by 11.63% and 6.05%. And the production value of treatment 2 increased by 6.76% and 0.87% compared with treatment 1 and treatment 3, respectively. The superior rate, medium-superior rate and superior rate of upper tobacco of treatment 2 were 48.59%, 91.49% and 60.49%, respectively. With the increase of fertilizer application, single leave weight, stem weight, content of reducing sugar, nicotine, total nitrogen and potassium of flue cured tobacco showed a gradually increasing trend; among which total sugar content of treatment 2 was the highest, while chlorine content was the lowest. In conclusion, when the nitrogen, phosphorus and potas-sium fertilizer application were 97.5, 146.25, 341.25 kg/hm2in Lichuan city, higher yield, quality and economic benefits of flue cured tobacco could be achieved.%采用田间试验方法比较了不同施肥量(施氮量分别为90.0、97.5和105.0 kg/hm2,氮磷钾比例为1:1.5:3.5)处理对烟叶产量、质量的影响.结果表明,处理3(施氮量105.0 kg/hm2)的烟叶产量分别比处理1(施氮量90.0 kg/hm2)和处理2(施氮量97.5 kg/hm2)增加了11.63%和6.05%,处理2的产值最高,分别比处理1和处理3增加了6.76%和0.87%.处理2的上等烟率、上中等烟率和上部烟叶上等烟率分别达到了48.59%、91.49%和60.49%.随着施肥量的增加,烤烟单叶重、烟梗重以及烟叶还原糖、烟碱、总氮、钾的含量呈现出逐渐增加的趋势,以处理2的烟叶总糖含量最高,而氯的含量则最低.总之,针对利川市烟区而言,纯氮磷钾用量为97.5、146.25、341.25 kg/hm2时,能够获得较高的产量、质量和经济效益.
展开▼
