江西农业学报2025，Vol.37Issue(8)：93-101,9.DOI:10.19386/j.cnki.jxnyxb.2025.08.013
1985-2022年山南冬小麦生育期对气候变化的响应特征及其驱动机制研究
Response Characteristics of Winter Wheat Growth Period to Climate Change in Shannan from 1985 to 2022 and Their Driving Mechanisms
摘要
Abstract
Based on the observation data and meteorological data of winter wheat growth period from 1985 to 2022 at Shannan Agricultural Meteorological Observation Station in Xizang,this study expounded the impact of climate change on winter wheat growth period and its response mechanism.The results showed that during the growing season of winter wheat in Shannan,the temperature significantly increased,with a maximum temperature growth rate of 0.42℃/10 a,and the sunshine hours increased at a rate of 67.12 h/10 a,while the relative humidity showed a decreasing trend,with a decrease of 0.36%/10 a,especially from December of that year to March of the following year.The growth period of winter wheat shows phased changes,with an extended nutritional growth period(emergence-tillering)of 8.49 d/10 a,The nutritional reproductive growth period(tillering-heading)and reproductive growth period(heading-maturity)were shortened by 6.32 and 3.01 d/10 a,respectively.The meteorological factors during the critical growth period have a significant impact,such as a decrease in the lowest temperature during the wintering period(-0.11℃/10 a),which may increase the risk of frost damage.The significant increase in humidity during the grain filling period(20.67%/10 a)may affect grain quality and yield.The shortening of the entire reproductive period(0.84 d/10 a)and the advancement of the maturation period(5.92 d/10 a)may be related to the increase in temperature and optimization of photothermal resources.关键词
冬小麦/生育期/气候变化/气温/日照时数/山南Key words
Winter wheat/Growth period/Climate change/Temperature/Sunshine hours/Shannan分类
农业科技引用本文复制引用
普布多吉,旦增益嘎,周刊社,史继清,张东东..1985-2022年山南冬小麦生育期对气候变化的响应特征及其驱动机制研究[J].江西农业学报,2025,37(8):93-101,9.基金项目
西藏自治区科技计划项目资助(XZ202401ZY0065). （XZ202401ZY0065）
