密度与施氮量对杂交小麦品种绵杂麦168籽粒灌浆特性的影响  

Effect of Nitrogen Fertilizer Rate and Planting Density on Grain Filling Traits of the Two-Line Hybrid Wheat Variety-Mian Za Mai 168

作　　者：周强[1,2] 张跃非[1] 李生荣[1,2] 陶军[1,2] 杜小英[1,2] 欧俊梅[1,2] 任勇[1,2] 庞启华[1,2] 黎文述 

机构地区：[1]绵阳市农业科学研究所,四川绵阳621023 [2]国家小麦改良中心绵阳分中心,四川绵阳621023 [3]四川广汉大地种业公司,四川广汉618300

出　　处：《西南大学学报（自然科学版）》2010年第10期1-5,共5页Journal of Southwest University(Natural Science Edition)

基　　金：国家"863"计划资助项目(2009AA101102);国家"十一五"支撑计划资助项目(2006BAD01A02);四川省"十一五"育种攻关资助项目(2006YZGG-3);四川省农业厅重点资助项目

摘　　要：为给杂交小麦品种绵杂麦168的高产栽培提供参考,该试验就密度与施氮量对杂交小麦品种绵杂麦168籽粒灌浆特性的影响进行了研究.结果表明:绵杂麦168籽粒灌浆过程符合Logistic曲线方程.氮肥主要通过灌浆期各阶段的灌浆速率显著地影响籽粒质量;密度是通过渐增期持续天数和渐增期与快增期灌浆速率显著地影响籽粒质量.随着施氮量的增加,灌浆期各阶段的灌浆速率逐渐降低,最终千粒质量逐渐降低;随着密度的增加,渐增期持续天数和渐增期与快增期灌浆速率呈逐渐减少趋势,千粒质量逐渐降低.The effects of different planting densities and different nitrogen application rates on grain filling traits of the two line hybrid wheat variety-Mian Za Mai 168 were studied. The results showed that the grain filling process of Mian Za Mai 168 might well be described with a logistic curve. Nitrogen fertilizer influenced the grain weight significantly through the grain filling rate of each grain filling stage, and plant- ing density influenced the grain weight significantly through the grain filling period in slowly increasing stage and the grain filling rates of the slowly increasing stage and that of fast increasing stage. The grain filling rates of each grain filling stage decreased gradually with the increasing nitrogen application rates, and thus the grain weight decreased gradually. The grain filling period in slowly increasing stage and the grain filling rates of the slowly increasing stage and that of fast increasing stage decreased gradually with increasing planting density, so the grain weight decreased gradually.

关 键 词：杂交小麦 绵杂麦168 密度 施氮量 灌浆特性 

分 类 号：S512.1[农业科学—作物学]