洛阳烟区豫烟12号适宜施氮量研究

Study on Optimum Nitrogen Application Rate of Yuyan 12 in Luoyang Tobacco Growing Area

为筛选豫烟12号在洛阳烟区的适宜施氮量,研究了洛阳烟区不同施氮量对豫烟12号农艺性状、化学成分、外观质量和经济性状的影响。结果表明,豫烟12号在中等施氮量(45 kg/hm2)下农艺性状较好,产量和上等烟比例较高,外观质量较好,化学成分之间较协调,产值高;高施氮量(52 kg/hm2)下农艺性状最好,但由于施氮量过高不宜烘烤,上等烟比例较低,外观质量一般,化学成分之间不够协调;低施氮量处理在各方面亦表现较差。因而,在洛阳烟区豫烟12号施氮量为45 kg/hm2左右时可获得最佳的产质量效益。

In order to reveal the optimum nitrogen rate of Yuyan 12 in Luoyang tobacco growing area,the effects of different nitrogen application rates on agronomic traits,chemical composition,appearance quality and economic characters of Yuyan 12 in Luoyang were studied. The results indicated that when the nitrogen application rate was 45 kg / hm2,Yuyan 12 had better agronomic characters,higher yield and proportion of high quality tobacco,better appearance quality,well proportioned chemical components and the highest output value. When the nitrogen application rate was 52 kg / hm2,Yuyan 12 had the best agronomic characters,but lower proportion of high quality tobacco and appearance quality,and not proportioned chemical components because the leaves were hard to curing under higher nitrogen application rates. All the indexes of Yuyan 12 performed worse under the low nitrogen treatment. Therefore,Yuyan 12 could obtain the best yield and quality benefits when the nitrogen application rate was 45 kg / hm2 in Luoyang tobacco growing area.