摘要： 利用盆栽试验,在棕壤土上施N 0.28 g/kg条件下,于2005年5月在沈阳农业大学肥料长期定位试验站研究等量氮肥不同施肥方式对春小麦产量和籽粒中蛋白质含量及组分的影响。结果表明,等氮量前提下,一次性底施氮肥有利于小麦产量的提高,随着施氮时间的后延,产量呈下降趋势,平均下降26.44%。氮素在对春小麦籽粒蛋白质含量及其组分的影响上表现为:随着春小麦施氮时期的后延,籽粒中蛋白质含量呈增长的趋势,平均增加6.86%,其中定西29号增加幅度最大,增加了48.78%;清蛋白和球蛋白的含量以底施+分蘖期+拔节期+抽穗期施氮最高,其分别为4.09%,0.36%;而醇溶蛋白和麦谷蛋白的含量在分蘖期施氮达到最高为5.36%,4.16%。各蛋白组分在蛋白质中的分配表现为:清蛋白和麦谷蛋白相对含量在底施+分蘖期施氮下都达到最大,分别占18.90%,20.10%;而对于球蛋白和醇蛋白相对含量在4种施氮方式下,随着施氮时间的后延呈降低趋势,分别降低了53.37%,28.84%。

关键词: 氮素施用方式, 产量, 蛋白质含量, 蛋白质组分

Abstract: The pot experiment was conducted to study the effect of different methods of the same quantity nitrogen (N0.28 g/kg)of the brown soil on spring wheat yield, protein content and formation in May of 2005 in the Shenyang AgriculturalUniversity fertilizer long-term station.The result showed that the nitrogen basal fertilize to be advantageous to thewheat yield enhancement under the same nitrogen conditions, along with fertilize the nitrogen time after to extend, theyield assumed the drop tendency, equally drops 26.44%.The result of the influence of nitrogen fertilizer applicationmethod on the spring wheat yield protein content and components was like this:fertilize the nitrogen time along with thespring wheat after to extend, in the grain protein content assumes the growth the tendency, equally increases by6.86%,Dingxi 29 increased by 48.7%;The albumen and the globulin content was the highest under the fertilization at thebasal fertilize and at the tillering, jointing and heading stages, it was 4.09% and 0.36% respectively;But the alcoholsouble and the alkali souble content was highest than other fertilize nitrogen application methods at the basal fertilize andtiller stage, it achieved the highest level which was 5.36% and 4.16%.Various proteins components in the protein assignmentperformance was:The albumen and the alkali souble comparative content achieve biggest than others at thebasal fertilize and tillering stages,which accounts for 18.90% and 20.10% respectively;But the globulin and the alcoholcomparative content in four kinds of fertilize nitrogen application, along with fertilize the nitrogen time after to extend assumed reduce tendency, respectively 53.37% and 28.84%.

Key words: Nitrogen top-dressing at different stages, Yield, Grain protein content, Protein components

中图分类号: 

• S512.1