CAJ | 학술논문

在大田条件下以强筋小麦新麦26为材料，采用Logistic方程拟合其籽粒灌浆过程并计算有关籽粒灌浆参数，探讨氮肥追施时期对强筋小麦籽粒灌浆特性的影响。结果表明，在不同追施时期处理下，强筋小麦籽粒千粒重呈“S”形增长；在相同的施氮水平下，灌浆持续时间、平均灌浆速率、最大灌浆速率以及灌浆进程的渐增期、快增期、缓增期长短等灌浆参数随氮肥追施时期的变化而有差异；孕穗期是较适宜的氮肥追施时期，可以保证在灌浆后期有充足的氮素供应，延长缓增期的灌浆持续时间，进而有利于粒重和产量的提高。
재대전조건하이강근소맥신맥26위재료，채용Logistic방정의합기자립관장과정병계산유관자립관장삼수，탐토담비추시시기대강근소맥자립관장특성적영향。결과표명，재불동추시시기처리하，강근소맥자립천립중정“S”형증장；재상동적시담수평하，관장지속시간、평균관장속솔、최대관장속솔이급관장진정적점증기、쾌증기、완증기장단등관장삼수수담비추시시기적변화이유차이；잉수기시교괄의적담비추시시기，가이보증재관장후기유충족적담소공응，연장완증기적관장지속시간，진이유리우립중화산량적제고。
Using strong gluten variety Xinmai 26 as material, the grain filling progress was fitted and the parameters were calculated by Logistic equation under field condition to discuss the effect of nitrogen topdress -ing period on grain filling characteristics .The results showed that the increase of 1 000-grain weight showed S type under different topdressing periods .Under the same nitrogen application amount , the grain filling dura-tion time, average filling velocity , the maximum filling velocity as well as the duration time of three stages in filling progress were variant among different treatments .Topdressing at booting stage was proved to be the best for ensuring nitrogen supplying at late filling stage and extending duration time of the slowly increasing stage , which was benefit for increasing seed weight and yield .