摘要
在施氮量为4.0~6.2 kg/667m2及氮源为有机肥（优质腐熟油菜饼肥）和无机肥（烤烟专用复合肥,N∶P2O5∶K2O=10∶10∶25）条件下,研究了不同施氮量与氮源对烤烟生长发育及产质量的影响。结果表明：烟株农艺性状、叶面积指数、叶绿素含量、光合速率及产质量均随施氮量的减少而降低,低氮（4.0 kg/667m2）不利于烟株的生长发育和产质量的形成。在同一施氮水平下,配施有机肥对烟株的生长发育有明显的促进作用,以施纯氮5.2 kg/667m2（4.2 kg/667m2无机氮肥＋1.0 kg/667m2有机氮肥）能够获得最大效益。
Yunyan 85,a flue-cured tobacco variety,was fertilized with different nitrogen amounts and sources to study the effects on its growth,yield and quality.The results showed that the agronomic characters,leaf area index,chlorophyll content,photosynthetic rate,yield and quality reduced with the disease of nitrogen amount,lower nitrogen amount（4.0kg/667m2） was not beneficial to plant growth,yield and quality of Yunyan 85,the mixed organic and inorganic nitrogen could obviously promote growth of Yunyan 85 compared with only organic nitrogen or inorganic nitrogen under the same nitrogen amount.The optimum application amount of nitrogen for the highest economic benefit of Yunyan 85 was 5.2kg/667m2 pure nitrogen（4.2kg/667m2 inorganic nitrogen ＋ 1.0 kg/667m2 organic nitrogen）in the experiment.
出处
《贵州农业科学》
CAS
北大核心
2010年第9期61-64,共4页
Guizhou Agricultural Sciences
基金
贵州省农业攻关项目"贵州省中低产土改良关键技术研究与示范"[黔科合NZ字(2007)3002]
关键词
烤烟
施氮量
有机肥
无机肥
生长发育
产量
经济效益
flue-cured tobacco
nitrogen amount
organic manure
inorganic fertilizer
growth and development
yield
economic benefit
