氮肥运筹对红花大金元生长和产质量的影响

Effects of nitrogen management on the growth,yield and quality of Honghua Dajinyuan

在攀枝花植烟区,研究了不同施氮量和不同基提培肥配比在中等肥力的台地上对红花大金元烤烟生长和产质量的影响。结果表明,无论是总施氮量为3.95 kg/667 m^2或2.95 kg/667 m^2,在提苗肥∶培肥=1.75∶0.8的情况下,单叶重较高,开片度好,产值和上等烟率最高,化学成分协调,香气质和香气量最高。综合分析,在该试验条件下,施氮量为3.95 kg/667 m^2,基肥∶提苗肥∶培肥=1.4∶1.35～1.75∶0.8～1.2为最佳。

In the Panzhihua tobacco planting area, the effects of different nitrogen application rates and the ratio of base and dressing fertilizer on the growth and quality of Honghua Dajinyuan were studied, which was planted on the medium fertility bench terrace. The results showed that, under the condition of dressing fertilizer: earth-up fertilizer=1.75∶0.8, no matter the total nitrogen application rate is 3.95 kg/667 m^2 or 2.95 kg/667 m^2, the single leaf weight of treatment is higher, the degree of leaf expansion is good, the output value and the percentage of superior leaves are the highest, and the chemical composition is coordinated, the aroma quality and the aroma quantity are the highest. According to the comprehensive analysis, under the conditions of the nitrogen application amount is 3.95 kg/667 m^2, and the base fertilizer∶dressing fertilizer∶earth-up fertilizer=1.4∶1.35~1.75∶0.8~1.2 is the best.