河南农业科学2012，Vol.41Issue(12)：67-71,5.
氮用量及基追比例对烤烟生长发育及产量的影响
Effects of Nitrogen Application Rate of Base and Topdressing Fertilizer on Growth and Yield of Flue-cured Tobacco
摘要
Abstract
A field experiment was carried out to study the influence of different nitrogen levels and different ratios of basal and topdressing fertilizer on agronomic characters, yield and photosyn-thetic characteristics of tobacoo in tobacco-growing region of western Henan. The results showed that flue-cured tobacco had the increase trend in agronomic characters,dry matter accumulation dynamics and yield with the increase of nitrogen rate. In the condition of same amount of nitrogen application,applying basal N fertilizer plus topdressing N fertilizer was better than only basal N fertilizer applied. The treatment with the ratio of basal N to topdressing N fertilizer at 1 : 1 had the highest yield, while the highest output value and the most proportion of superior tobacco leaves were obtained in the treatment with the ratio of basal N to topdressing N fertilizer at 3: 1. Under the same ratio of base fertilizer and topdressing of nitrogen,there was significant difference in net photosynthetic rate between the treatment of 37. 5 kg/ha and the treatment of 82. 5 kg/ha,and no significant difference was observed between the treatment of 60 kg/ha and the treatment of 82. 5 kg/ha. Compared comprehensively,the amount of nitrogen application at the level of 60 kg/ ha and the ratio of basal N to topdressing N fertilizer at 3 : 1 were commended in tobacco-growing region of western Henan.关键词
施氮量/基追肥比例/光合特性/干物质积累Key words
nitrogen application rate/ratio between base fertilizer and dressing/photosynthetic characteristics/dry matter accumulation分类
农业科技引用本文复制引用
毛家伟,张翔,李彰,李国平,王闷灵,王海涛,江凯,孙洪魁,李永涛..氮用量及基追比例对烤烟生长发育及产量的影响[J].河南农业科学,2012,41(12):67-71,5.基金项目
河南省烟草专卖局重点科研项目(HYKJ201009,HYKJ201108) （HYKJ201009,HYKJ201108）
国家烟草专卖局特色优质烟叶开发重大专项 （）
洛阳市烟草公司科技项目 （）
