CAJ | 학술논문

通过大田试验,研究不同基追比和追肥时期对白肋烟干物质积累,总氮和烟碱积累动态的影响.结果表明:各处理烟株干物质积累速度在各生育期内均表现为高追肥处理大于低追肥处理,且基追比例相同时,在移栽后30d内,推迟追肥时期有利于烟株的干物质积累.白肋烟总氮含量随生育期的推进而降低,但随着追肥量的增加和追肥时期的推迟,总氮含量下降幅度减缓.烟碱含量随生育期的推进而增加,在栽后75d出现一个积累高峰,随追肥量的增大和追肥时期的延迟烟碱含量增加,其中上部叶烟碱含量变化幅度最大.
통과대전시험,연구불동기추비화추비시기대백륵연간물질적루,총담화연감적루동태적영향.결과표명:각처리연주간물질적루속도재각생육기내균표현위고추비처리대우저추비처리,차기추비례상동시,재이재후30d내,추지추비시기유리우연주적간물질적루.백륵연총담함량수생육기적추진이강저,단수착추비량적증가화추비시기적추지,총담함량하강폭도감완.연감함량수생육기적추진이증가,재재후75d출현일개적루고봉,수추비량적증대화추비시기적연지연감함량증가,기중상부협연감함량변화폭도최대.
A field experiment was conducted to investigate the effects of supplemental proportion and top-dressing time on the dynamic change of dry matter,total nitrogen and nicotine content of burley tobacco.The results showed that the speed of the accumulation of dry matter of tobacco plant in high top-dressing proportion treatment was higher than that in low top-dressing proportion treatment in the whole growth duration,and at the same top-dressing proportion,in 30 days after transplanting,postponing top-dressing time was beneficial to the accumulation of dry matter of tobacco plant.The content of total nitrogen in burley tobacco leaves decreased with the advancing of growth process,but the extent of decrement slowed down with the increase of top-dressing proportion and postponing top-dressing time.The content of nicotine increased with the advancing of growth process,presenting a maximum value on the 75 days after transplanting,the content of nicotine increased with the increase of top-dressing proportion and postponing top-dressing time,and the content of nicotine in the upper leaves of tobacco had the largest change range.