摘要
通过大田试验研究了绿肥翻压及减施氮量对当地气候条件下烟株养分累积、烤烟产量和质量的影响。结果表明,翻压紫花苕子可以明显促进烟株对氮、磷、钾的吸收,从而增加烟株的生物量,提高肥料的利用效率;翻压小麦且每公顷减氮45.0 kg使产量和产值均明显降低。翻压绿肥可以使烟叶的钾含量上部平均增加0.20个百分点、下部平均增加0.16个百分点、中部平均降低0.15个百分点,翻压紫花苕子烟叶的含钾量较翻压小麦高。翻压小麦处理使中、上部烟叶还原糖有降低的趋势,而下部烟叶有增加的趋势。总体上翻压绿肥有改善烟叶质量的作用,特别是对降低中、上部烟叶烟碱含量、降低氯含量、提高钾含量具有明显的效果。
A field experiment was carried out in the Southwest of Hubei to study the effect of green manure and nitrogen levels on nutrient accumulation and quality of tobacco. The results showed that overturning vetch markedly promoted N, P, K absorption by tobacco, increased vegetative yield of tobacco, and improved fertilizer efficiency. Yield and production value could markedly be decreased under overturning wheat and reducing nitrogen 45.0 kg per ha. Overturning green manure accelerated K content of top leaf and below leaf by 0.20 percentage point and 0.16 percentage point, decreased K content of middle leaf by 0.15 percentage point. K content of tobacco by overturning vetch was higher than by overturning wheat. Overturning wheat reduced sugars contents of top leaf and middle leaf, and increased sugars content of below tobacco leaf. Overturning green manure improved tobacco quality, especially depressed the contents of nicotine and chlorine of top leaf and middle leaf, and increased K content.
出处
《湖北农业科学》
北大核心
2009年第9期2106-2109,共4页
Hubei Agricultural Sciences
基金
国家公益性行业(农业)科研专项(200803029-01-08)
关键词
绿肥
氮水平
养分累积
烤烟
产量
质量
green manure
nitrogen level
nutrient accumulation
flue-cured tobacco
yield
quality
