【摘要】 为探讨不同密度条件下强筋小麦豫麦34号的冠层结构特征与产量的关系,在大田条件下,采用随机区组设计,研究了120万苗/hm2、225万苗/hm2、330万苗/hm23个密度对豫麦34号的冠层结构特征和产量的影响。结果表明,小麦孕穗期以后,225万苗/hm2密度处理的小麦叶面积指数和消光系数最大,冠层开度最小,平均叶倾角居中,小麦产量最高。综合分析认为,3个密度处理之中,以225万苗/hm2处理的小麦冠层结构适宜、株形最佳、群体光分布合理,是最佳的密度水平。更多还原

【Abstract】 To understand the relationship between different density treatments on canopy architecture and grain yield of high gluten wheat-Yumai 34;The dynamics of canopy architecture characters and changes of grain yield of strong gluten wheat-yumai 34 at three different density treatments which are 1.2×106 plants/ha,2.25×106 plants/ha and 3.3×106 plants/ha respectively was studied under field condition using randomized block experiment;The 2.25×106 plants/ha treatment would have the highest area index(LAI) and extinction coefficient(K),while canopy openess(DIFN)would be lowest and mean leaf angle(MLA) would be moderate after booting stage.These is benefitial to the promotion of light use efficiency.The 2.25×106 plants/ha treatment had a more suitable canopy architecture than others,and its yield and yield components were all higher than those of other treatments.So the 2.25×106 plants/ha treatment was the best level of density among the three treatments.更多还原