核农学报2017，Vol.31Issue(4)：787-793,7.DOI:10.11869/j.issn.100-8551.2017.04.0787
拔节后水分调控对矮抗58氮素吸收利用特性和蛋白质产量的影响
Effects of Water Managements After Jointing on Nitrogen Uptake and Utilization and Protein Yield in Winter Wheat Cultivar AK58
摘要
Abstract
In order to investigate effect of water managements after jointing on nitrogen uptake and utilization characteristics and protein yield in winter wheat,AK58 was selected as material,which was planted under rain-proof shelter conditions from 2013 to 2015.Three water treatments,including persistent drought (soil water content of 45％ ～55％ field capacity) from jointing to maturity (W1),suitable water supply (soil water content of 70％ ～ 80％ field capacity) from jointing to booting + drought (soil water content of 45％ ～55％ field capacity) from anthesis to maturity (W2) and persistent suitable water supply (soil water content was 70％ ～ 80％ field capacity) from jointing to maturity (W3),were conducted on the basis of seeding at sufficient soil moisture and security overwintering.Under the three treatments,the differences of transport properties of accumulated nitrogen,utilization efficiency,grain yield and protein yield in winter wheat were measured.The results indicated that the accumulation,translocation and utilization of N and grain N uptake in winter wheat cultivar AK58 were significantly affected by different water managements after jointing,and the similar patterns appeared in the two growing seasons.In terms of average,the plant N uptake at maturity,post -anthesis N accumulation amount and its transaction efficiency of AK58 were significantly improved with the W2.Meanwhile,compared with the W1 and W3,the transaction amount and its transaction efficiency of pre-anthesis stored N with the W2 were increased by 12.0％ and 21.9％,2.6％ and 21.6％,respectively,and then the N uptake in grain at maturity and its partitioning rate of grain to plant were significantly enhanced.Compared with the W1,the nitrogen uptake efficiency,grain yield and protein yield with the W2 increased by 19.2％,21.8％ and 16.9％,respectively.Moreover,the protein yield with the W2 increased by 3.1％ compared with W3.Given consideration to the grain yield,protein content and protein yield,the optimum water management of water saving and high yield,efficiency and quality for AK58 was keeping the soil water content at 70％ ～80％ field capacity from jointing to booting stage and then 45％ ～55％ from anthesis to maturity.The results provided valuable reference for improving the water management practicebased on enhancing protein yield of winter wheat.关键词
水分调控/冬小麦/氮素积累转运/籽粒蛋白质产量Key words
water management/winter wheat/nitrogenaccumulation and translocation/grain protein yield引用本文复制引用
相一杰,吴金芝,李友军,黄明,段武林..拔节后水分调控对矮抗58氮素吸收利用特性和蛋白质产量的影响[J].核农学报,2017,31(4):787-793,7.基金项目
河南省重点科技攻关基金项目(102102110030) （102102110030）
