江西农业学报2024，Vol.36Issue(2)：7-12,6.DOI:10.19386/j.cnki.jxnyxb.2024.02.002
辽西地区大豆生长发育和产量对气候变化的响应
Response of Soybean Growth,Development and Yield to Climate Change in Western Liaoning Province
摘要
Abstract
Based on years of phenological monitoring and phased sowing experimental data,the response of soybean growth,development and yield to climate change in western Liaoning province was studied.The results showed that the lower limit temperature for soybean sowing is 8.0℃,and the optimum temperature is 15～20℃.The appropriate soil moisture is between 18％and 22％,and the ideal sowing period is in early to mid-May.The soybean vegetative growth phase requires a cumulative temperature of≥10℃ over 1200℃·d,the reproductive growth phase over 1250℃·d,and the entire growth period over 2600℃·d.The relationship between cumulative temperature and yield is parabolic,and the cumulative temperature of≥10℃ 2800～3060℃·d is conducive to the increase of soybean yield.There are three critical temperature periods for soybeans:branching(early to mid-June),flowering and pod setting(mid to late July),and grain filling(mid to late August).Drought during the vegetative growth phase reduces 100-grain weight by 6.0％～18.0％,and during flowering,pod setting,and maturation,it reduces by 8.0％～25.0％.The impact of rainfall on soybean yield is parabolic,and the critical period for water needs is from early June to mid-August.Light has no significant effect on soybean yield in western Liaoning.关键词
辽宁西部/大豆/生长发育/产量/气候变化/响应Key words
Western Liaoning/Soybean/Growth and development/Yield/Climate change/Response分类
农业科技引用本文复制引用
赵凌尘,刘振宏,李忠娴,王鹏,孙艳云,牛丹,关雨姗,杨光,韩莹,朱明宇..辽西地区大豆生长发育和产量对气候变化的响应[J].江西农业学报,2024,36(2):7-12,6.基金项目
国家自然科学基金项目(31671576、31801253) （31671576、31801253）
中国气象局东北地区生态气象创新开放实验室开放研究基金项目(stqx2019zd02). （stqx2019zd02）
