施氮量对浓香型烤烟农艺性状及品质的影响

Effects of Nitrogen Fertilizer Rate on Agronomic Characters and Quality of Strong Aroma Style of Tobacco

通过田间试验研究了不同施氮量对豫中地区主栽品种中烟100农艺性状、抗病性和品质的影响。结果表明,相比施氮75kg/hm2而言,施氮52.5 kg/hm2的处理大田烟株长势强,打顶后株高较高,叶片数多,茎围较粗,病害发生较轻;烤后烟叶外观油分增多,色度增强,结构疏松,含青、挂灰和杂色较少,单叶重有所提高;总糖、还原糖随着施氮量的降低有升高的趋势,氯含量随施氮量的降低而降低;香气质较好,香气量较足,整体评吸质量较好。因此,在当地生态条件下,施氮量以52.5 kg/hm2为宜,烟叶大田长势强,抗病害能力提高,烤后烟叶品质佳。

A field experiment was conducted to study the effects of different nitrogen rates on agronomic characters,disease resistance and quality of main tobacco cultivar(Zhongyan100) in central Henan areas.The results showed that compared with nitrogen fertilizer rate of 75 kg/hm2,in treatment with nitrogen fertilizer rate of 52.5 kg/hm2,the growth of tobacco plant was stronger,the plant height was higher after topping,the tobacco leaves were more,the stem thickness was bigger,and incidence of disease was less.The oil of cured tobacco leaf increased,color enhanced and structure became loose,and the flue-cured tobacco leaves had less green,dust sticking and variegation,and single leaf weight increased.Moreover,with nitrogen fertilizer rate decreased,the contents of total sugar and reducing sugar increased,but the content of chlorine decreased.The leaves had good aroma quality and enough volume of aroma,and smoking quality was great.Therefore,under the local ecological conditions,when nitrogen fertilizer rate was 52.5 kg/hm2,the growth of tobacco leaf was stronger,the disease resistance increased,and the quality of cured tobacco leaves were better.