应用生态学报2015，Vol.26Issue(1)：46-52,7.
花粒期光照对夏玉米干物质积累和养分吸收的影响
Effect of light from flowering to maturity stage on dry matter accumulation and nutrient absorption of summer maize
摘要
Abstract
Using Denghai 605 (DH605) as the experimental material,shading (S) and increasing light (L) treatments from flowering to maturity stage were designed in a field experiment to explore effects of light on dry matter accumulation and nutrient absorption of summer maize.Results showed that grain yield,dry matter accumulation and nutrient absorption decreased significantly after shading but increased after increasing light.Yields in S treatment from 2011 to 2013 were reduced by 59.4％,79.0％ and 60.6％ compared to those in CK,while that in L treatment were increased by 16.3％,12.9％ and 6.8％,respectively.The relative N and P absorption increased to a certain extent because of the greater effect of shading on dry matter accumulation than that of N and P absorption.After shading,K absorption of whole plant corn decreased significantly to a greater extent than that of dry matter accumulation decrease.The proportion of nutrient allocated to grains decreased significantly after shading.Dry matter accumulation and N and P absorption rates increased significantly after increasing light,and effects of increasing light on N and P absorption were greater than that of dry matter accumulation.Nutrient accumulation and the proportion allocated to grain increased significantly after increasing light.关键词
夏玉米/遮阴/增光/氮、磷、钾养分/干物质Key words
summer maize/ shading/ increasing light/ N, P, K nutrient/ dry matter分类
农业科技引用本文复制引用
史建国,朱昆仑,曹慧英,董树亭,刘鹏,赵斌,张吉旺..花粒期光照对夏玉米干物质积累和养分吸收的影响[J].应用生态学报,2015,26(1):46-52,7.基金项目
山东省现代农业产业技术体系建设经费(SDAIT-01-022-05)、国家自然科学基金项目(31271662)、国家粮食丰产科技工程项目(2011BAD16B09)和山东省玉米育种与栽培技术企业重点实验室开放课题资助. （SDAIT-01-022-05）
