中国农业科学Issue(21)：4427-4434,8.DOI:10.3864/j.issn.0578-1752.2013.21.004
花粒期光照对夏玉米产量和籽粒灌浆特性的影响
Effect of Light on Yield and Characteristics of Grain-Filling of Summer Maize from Flowering to Maturity
摘要
Abstract
[Objective]Owing to the solar radiation has decreased in North China Plain Area, this study is to explore the effects of light on yield and characteristics of grain-filling of summer maize from flowering to maturity stage.[Method]Denghai605 (DH605) was used as experimental material, two treatments of both shading (S) and increasing light (L) from flowering to maturity stage were arranged. The shading degree was 60% and the illumination intensity of the increasing light on cloudy day could reach 80 000-100 000 lx. One non-shading and non-increasing light treatment was used as control. Effects of light on yield and characteristics of grain-filling of summer maize from flowering to maturity stage were investigated.[Result]Yield, dry matter accumulation, maximum grain-filling rate decreased with different degrees, respectively, after shading from flowering to maturity stage;however, the yield, dry matter accumulation, maximum grain-filling rate increased after increasing light from flowering to maturity stage. Compared to CK, the yields of S were reduced by 59.39%and 79.03%in 2011 and 2012, while the yields of L were increased by 16.29%and 12.93%in two years. The dry matter in response to different treatments showed:L>CK>S. The proportions of different treatments kernel in total dry matter accumulation of DH605 were significantly different during the late growing stage, and the mean values of S, CK and L were 22.92%, 48.49%and 51.80%, respectively. The grain-filling progress of shading and increasing light was obviously different. The maximum grain-filling rate of shading was lower than that of increasing light, and the days before the appearance of maximum grain-filling rate of shading lengthened, the growth increment when the grain-filling rate of increasing light reached its maximum increased. [Conclusion]Shading decreased the yield of summer maize by reducing the dry matter accumulation and maximum grain-filling rate; increasing light increased grain yield of summer maize by improving the dry matter accumulation and maximum grain-filling rate.关键词
夏玉米/遮阴/增光/籽粒灌浆/产量Key words
summer maize/shading/increasing light/grain-filling/yield引用本文复制引用
史建国,崔海岩,赵斌,董树亭,刘鹏,张吉旺..花粒期光照对夏玉米产量和籽粒灌浆特性的影响[J].中国农业科学,2013,(21):4427-4434,8.基金项目
国家公益性行业（农业）科研专项（200903003）、国家自然科学基金项目（31271662）、山东省现代农业产业技术体系项目、山东省玉米良种工程课题、山东省玉米育种与栽培技术企业重点实验室开放课题 （）
