| Interaction of variety, nitrogen rate and planting density on yield and quality of flue-cured tobacco in western Henan |
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| DOI：10.7606/j.issn.1000-7601.2014.05.022 |
| Key Words: nitrogen rate variety planting density yield value chemical quality |
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| Abstract: |
| In order to investigate the optimal combination of cultivation methods for growing tobacco in Western Henan, the effect of variety, nitrogen rate and planting density on chemical quality and economic characters of flue-cured tobacco was studied using orthogonal experimental design. The results showed that: Among the three factors, total sugar and reducing sugar were affected mostly by variety. With the increase of nitrogen rate, the total nitrogen increased; The influence order of experimental factors on the score of integrated evaluation of chemical components coordination of middle leaves was nitrogen rate＞variety＞planting density. The suitable cultivation technique was A1B2C3 (variety, Qinyan96; planting density, 16 500 plants·hm-2; nitrogen rate, 67.5 kg·hm-2); The influence order of experimental factors on tobacco yield was variety＞nitrogen rate＞planting density and the cultivation technique for the highest yield was A3B3C3 (variety, Yuyan 6; planting density, 18 000 plants·hm-2; nitrogen rate, 90.0 kg·hm-2). The
cultivation technique for the highest tobacco output was A1B2C2 (variety, Qinyan96; planting density, 16 500 plants·hm-2; nitrogen rate, 67.5 kg·hm-2). The output value, average price and high grade leaf proportion were 62 770.5 yuan·hm-2, 19.21 yuan·kg
-1 and 58.6%. It is suggested that the combination of Qinyan96, 16 500 plants·hm-2 and 67.5 kg N·hm-2 were suitable for tobacco growing in western Henan. |
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