摘要
2 0 0 0～ 2 0 0 1年连续两年在黑龙江省中等肥力的粘壤土上进行了田间小区试验 ,研究不同形态氮肥配比对烤烟的农艺性状、化学成分和产量品质的影响。结果表明 ,每公顷施纯氮 4 5 0kg ,采用 75 %NO- 3-N + 2 5 %NH+4 -N的配比 ,烟叶中钾、还原糖等成分的含量较高 ,与烤烟品质关系密切的化学成分比例适宜 ,产值及上中等烟比例等经济指标最佳。
The field plot experiments on effects of the proportion of NO - 3-N to NH + 4-N on agronomic characteristics,chemical components,yield and quality of flue-cured tobacco planted in clay loam soil of middle fertility was conducted from 2000 to 2001. The results showed that when nitrogen application rate was 45 kg/ha with the proportion of 75% NO - 3-N to 25% NH + 4-N,the cured leaves had relatively higher potassium and reducing sugar contents, appropriate proportion of main chemical components related to flue-cured tobacco quality,the best economic indexes in terms of yield value and ratio of high and middle grades tobacco leaves.
出处
《烟草科技》
EI
CAS
2004年第3期35-36,39,共3页
Tobacco Science & Technology
