摘要
以烤烟品种金神农1号为材料,采用钾肥与腐殖酸双因子大田试验,分析了不同钾肥和腐殖酸水平及其互作对烤烟干物质量、化学成分、香味物质及有机钾盐指数的影响。结果表明:在同一钾肥水平下增施腐殖酸及在同一腐殖酸水平下增施钾肥均可增加烤烟前期的总干物质和烘烤后烟叶的总香味物质量,改善烟叶化学成分,提高有机钾盐指数;钾肥和腐殖酸互作对烟叶还原糖、总氮、氮碱比、钾及有机钾盐指数均有显著的正效应,而对烤烟干物质量及其余化学成分指标的影响则未达到显著水平;较高水平的钾肥和腐殖酸配施相对于较低水平两者配施有利于改善烤烟品质,提高烟叶钾含量和有机钾盐指数。
A field experiment was carried out in Hubei on effects of potassium and humic acid and their interaction on dry biomass, chemical composition, flavoring substances and organic potassium salt index in flue-cured tobacco, Jinshennong # 1. The experiment was designed to have only two factors, potassium and humic acid, two levels each. Result show that amendment of humic acid to fields the same in potassium level or application of potassium fertilizer to fields the same in humic acid level increased dry biomass of the plants at the early flu-curing stage and the total flavoring substances in, improved chemical composition of the cured leaves and raised organic potassium salt index of the flue-cured tobacco leaves; and interaction between potassium fertilizer and humic acid had some significantly positive effects on contents of reducing sugar, total nitrogen and potassium, nitrogen/nicotine ratio and organic potassium salt index, and its effects on dry biomass and the other chemical properties of flue-cured tobacco were far from the significant level. The application of a high rate of potassium plus humic acid was more conducive to improving the quality of flue- cured tobacco leaves and increasing potassium content and organic potassium salt index of the leaves than application of a low rate of potassium fertilizer plus a low rate of humic acid.
出处
《土壤学报》
CAS
CSCD
北大核心
2015年第3期637-645,共9页
Acta Pedologica Sinica
基金
湖北省烟草公司重点项目(027Y2013-012)资助
关键词
烤烟
钾肥
腐殖酸
品质
有机钾盐指数
Flue-cured tobacco
Potassium
Humic acid
Quality
Organic potassium salt index
