施氮量对NC102品种生长发育及产质量的影响

为探讨NC102品种的良种良法配套技术,满足工业卷烟配方需求,采用田间试验的方法,研究了施氮量对NC102品种生长发育及产质量的影响。结果表明,施氮量对NC102品种的株高、叶面积、产量等有显著影响。在中等肥力(碱解氮50~80 mg/kg)条件下,施氮量为75、90 kg/hm²处理明显好于60、105 kg/hm²处理,其大田整齐度高,田间病害发生较轻,产值效益较高。其中,施氮量为75 kg/hm²的均价及产值效益最高。从烤后烟叶化学成分来看,施氮量为90、75 kg/hm²时,糖碱比更协调,更容易被目前卷烟工业所接受。综合分析,施氮量为75 kg/hm²,NC102品种的烟叶产质量最好。

Effects of Nitrogen Rates on Growth and Yield of Tobacco NC102

In order to explore the supporting technologies on fine seed and fine method of NC102 suitable for local natural conditions, and meet the need of industrial cigarette formula, effects of nitrogen rate on plants growth and yield of NC102 were studied by field experiment. The experiment set three replicates and four different nitrogen rate levels (60, 75, 90, 105 kg/ha). The results showed that nitrogen rate had significant effect on plant height, leaf area and yield. According to comprehensive analysis, higher field uniformity, lighter incidence of field diseases and higher production efficiency were recorded in the treatment of 75 and 90 kg/ha nitrogen rate, compared with the treatments of 60 and 105 kg/ha under moderate fertility (alkaline hydrolysis nitrogen 50-80 mg/kg). The highest average price and production efficiency were observed in the treatment of 75 kg/ha nitrogen rate. Based on chemical composition of flue cured tobacco leaves, when nitrogen rates were 75 and 90 kg/ha, sugar alkali ratios of the leaves were more harmonious, and they were accepted more easily by the cigarette industry. On the consideration of comprehensive analysis, the treatment of 75 kg/ha nitrogen rate was best on growth and yield of tobacco NC102.