摘要
在赣北地区进行了烤烟适宜施氮量的田间小区试验.研究结果表明：增施氮肥能明显地改善烤烟的生物学性状,提高烟叶的产量和改善烟叶的经济性状.烟叶产量均随施氮量增加而递增,与不施氮相比,差异均达显著水平;在施氮量0～157.5 kg/hm2范围内增加氮肥用量,烟叶的产值、均价、上中等比例显著提高,叶片中的总氮和烟碱含量上升,超过此用量则呈下降趋势.综合考虑烤烟的各项指标,推荐本生态气候烟区烤烟适宜施氮量以157.5 kg/hm2左右最佳,且此用量的氮肥经济效益也表现最好.
A field experiment of the optimum nitrogen rate of flue - cured tobacco in the northern part of Jiangxi province was conducted in this paper. The results indicated that the increasing rate of nitrogen could not only improve the biological characters but also enhance the economic characteristics. The N application could also increase the yield of flue- cured tobacco and the difference in all N application treatments reached significant level compared with the contrast treatment. Under the condition of this experiment, the production value, average price, superior - medium class leaves ratio increased with N rate until it reached 157.5 kg/hm^2 level, in addition, the contents of nicotine and total nitrogen in leaves also increased. But all these properties tended to decrease when N rate exceeded that level. Taken account of all these properties of flue- cured tobacco, the optimum N rate was about 157.5 kg/hm^2 and the economic profits of this N rate showed the best in this area.
出处
《河北农业大学学报》
CAS
CSCD
北大核心
2006年第2期4-8,共5页
Journal of Hebei Agricultural University
基金
国家烟草专卖局全国烟草平衡施肥技术试验与推广项目子课题(国烟科20000558)
"九五"江西省烟叶科学研究所资助项目
关键词
烤烟
施氮量
生长发育
产量
品质
flue-cured tobacco
nitrogen rate
growth
yield
quality
