施氮量、种植密度和留叶数对湘西烟区湘烟7号产量和质量的影响

朱子健, 陈娜娜, 吴月莹, 穰中文, 戴林建, 田明慧, 田峰, 易镇邪

Effects of Nitrogen Application Rate, Planting Density and Retained Leaf Number on Yield and Quality of Xiangyan 7 in Tobacco Region of Western Hunan

Zhu Zijian, Chen Nana, Wu Yueying, Rang Zhongwen, Dai Linjian, Tian Minghui, Tian Feng, Yi Zhenxie

表3 烟叶化学成分评价标准

Table 3 Evaluation standards for chemical composition of tobacco leaves

指标Index 100 100~90 90~80 80~70 70~60 <60 烟碱Nicotine (%) 2.20~2.80 2.20~2.00 2.00~1.80 1.80~1.70 1.70~1.60 <1.60 2.80~2.90 2.90~3.00 3.00~3.10 3.10~3.20 >3.20 总氮Total nitrogen (%) 2.00~2.50 2.50~2.60 2.60~2.70 2.70~2.80 2.80~2.90 >2.90 2.00~1.90 1.90~1.80 1.80~1.70 1.70~1.60 <1.60 还原糖Reducing sugar (%) 18.00~22.00 18.00~16.00 16.00~14.00 14.00~13.00 13.00~12.00 <12.00 22.00~24.00 24.00~26.00 26.00~27.00 27.00~28.00 >28.00 糖碱比Sugar/alkali 8.5~9.5 8.50~7.00 7.00~6.00 6.00~5.50 5.50~5.00 <5.00 9.50~12.00 12.00~13.00 13.00~14.00 14.00~15.00 >15.00 氮碱比Nitrogen/alkali 0.95~1.05 0.95~0.80 0.80~0.70 0.70~0.65 0.65~0.60 <0.60 1.05~1.20 1.20~1.30 1.30~1.35 1.35~1.40 >1.40