小麦早衰及氮素调控机理  

Analysis of Premature Senility of Wheat and Nitrogen Regulation Mechanism

作　　者：李鑫 高娣 康建宏[1] 坚天才 吴宏亮[1] LI Xin;GAO Di;KANG Jianhong;JIAN Tiancai;WU Hongliang(Agronomy of college,Ningxia University,Yinchuan 750021,China)

机构地区：[1]宁夏大学农学院,银川750021

出　　处：《东北农业科学》2024年第6期39-44,共6页Journal of Northeast Agricultural Sciences

基　　金：国家自然科学基金项目(31860352)

摘　　要：近年来,全球气候变暖趋势日益明显,极端天气频发,环境胁迫成为制约小麦栽培的重要因素之一。小麦属喜凉作物,当灌浆期遭遇高温胁迫时,会导致生理生化功能紊乱,进而影响产量。本文对高温引起小麦早衰的生理指标变化以及分子机理进行了概述,最后阐述了合理的氮肥运筹对小麦叶片早衰及产量和品质调控的内在机理。为今后研究氮素运筹在小麦生产中的作用,最终实现小麦高产、稳产提供理论依据和技术支撑。These recent years have witnessed an increasingly obvious trend of global warming,which leads to frequent extreme climates.Environmental stress has become one of the important factors restricting high-yield cultivation of high-quality wheat.Physiological and biochemical functions of wheat,adapted to cool climate,will be messed up under the influence of high temperature stress during the pustulation period,which can further affect its grain yield.This paper analyzes changes of wheat´s physiological indexes caused by high temperature and its molecular mechanism leading to premature senility respectively.Then,this paper explains how reasonable nitrogen fertilizer management control and regulate wheat leaf senescence,its yield and quality,which can provide theoretical basis and technical support for further researches on functions of nitrogen management in improving wheat production and for the final realization of high-quality and safe production of wheat with high and stable yield in the future.

关 键 词：小麦 早衰 高温 氮素调控 

分 类 号：S311[农业科学—作物栽培与耕作技术]