土壤水分条件对白肋烟产、质量的影响及白肋烟灌溉的土壤水分指标研究

本项研究采用田间和盆栽试验相结合的方法研究了土壤水分条件对白肋烟产、质量和化学成分的影响.结果表明,白肋烟各生育期土壤相对含水量的适宜指标分别为移栽-团棵为70%、团棵-打顶为81%、打顶-采收为76%;干旱指标分别为移栽-团棵为58%、团棵-打顶为71%、打顶-采收为69%.白肋烟成熟阶段需水量相对较多,成熟期土壤相对含水量对白肋烟的成熟速度和化学成分的协调性及评吸质量的影响最为明显,在适宜的土壤相对含水量以下的范围内,表现出随土壤相对含水量升高,成熟速度加快,烟碱含量明显下降,内在化学成分更为协调和评吸质量提高.适宜的土壤相对含水量能明显提高白肋烟产量、产值和等级比重.

Study on the effects of soil moisture condition on the yields and qualities of burley as the soil moisture indexes of burley irrigation

The effects of soil moisture condition on the yield and qualities of burley as well as the soil moisture indexes of burley irrigation were studied by field and potted plant tests. the results showed that the adequate index of relative soil moisture content were 70%,81% and 76% and drought index were 58%,71% and 69% in transplanting to bird nest stage , bird nest to topping stage and ripe stage, respectively. The adequate soil moisture content could significantly increase burley yields ,production values and high grades leaf proportion and improve smoking quality, decrease nicotine content.