氮肥运筹对孕穗期渍害冬小麦灌浆特性的影响  

Effects of Nitrogen Application Methods on Grain Filling Characteristics of Winter Wheat Suffered Waterlogging at Booting Stage

作　　者：吴进东[1] 丁广礼 

机构地区：[1]皖西学院,安徽六安237012 [2]安徽省阜南县农业科学研究所,安徽阜南236300

出　　处：《天津农业科学》2013年第1期24-28,共5页Tianjin Agricultural Sciences

基　　金：安徽省教育厅自然科学基金重点项目(KJ2011A271)

摘　　要：采用裂区设计研究了不同氮肥运筹对孕穗期渍害冬小麦灌浆特性的影响,结果表明:孕穗期渍害显著减小了小麦籽粒体积和籽粒质量,降低灌浆速率,缩短灌浆各期时间;氮肥后移显著增加了小麦籽粒体积和籽粒质量,提高了灌浆速率,而对灌浆时期参数无显著影响;各灌浆参数按与冬小麦籽粒最终千粒质量的关联度高低分别为平均灌浆速率、快增期灌浆速率、缓增期灌浆速率、最大灌浆速率、渐增期灌浆速率,与各灌浆时期参数关联性不显著。综合评价认为,生产中在沿淮行蓄洪区孕穗期易受渍害的大田推荐基肥∶拔节肥∶孕穗肥=3∶5∶2的氮肥运筹以减轻影响。The experiment applied split block design to study effects of different N application methods on grain filling characteristics of winter wheat suffered waterlogging at hooting stage. The result showed that waterlogging at hooting stage reduced 1 000 grain volume, grain weight, grain filling rate, each grain filling stage. Postponing N application improved 1 000 grain volume, grain weight, grain filling rate, while there was no significant different in each grain filling stage. According to their relationship to final 1 000 grain dry weight, there were R, R2, R3, Rm, R1 in descending order and there was no significant relationship with each parameter of grain filling stages. Evaluated comprehensively, the N application method （base fertilizer：elongation fertilizer：booting fertilizer=3：5：2） was recommended to reduce negative effect of waterlogging at booting stage in the Huaihe River flood plain.

关 键 词：氮肥运筹 孕穗期 渍害 灌浆特性 

分 类 号：S512.1[农业科学—作物学]