基于APSIM模型光照与CO_2对小麦的影响机制  

Effects of CO_2 and illumination on wheat grain yields based on APSIM model

作　　者：雷娟娟[1] 闫丽娟[2] 李广[1,3] 董莉霞[4] 高珍妮[4] 

机构地区：[1]甘肃农业大学资源与环境学院,甘肃兰州730070 [2]甘肃农业大学农学院,甘肃兰州730070 [3]甘肃农业大学林学院,甘肃兰州730070 [4]甘肃农业大学信息科学技术学院,甘肃兰州730070

出　　处：《草业科学》2015年第8期1310-1316,共7页Pratacultural Science

基　　金：甘肃省科技支撑计划(144NKCA038);甘肃省高等学校基本科研业务费项;甘肃省自然科学基金(1308RJZA272);干旱生境作物学重点实验室开放基金(GSCS-2010-11);国家自然科学基金(31060178)

摘　　要：为了探索光照强度与CO2浓度对小麦(Triticum aestivum)产量形成的影响,运用验证后的APSIM模型模拟不同光照强度与CO2浓度下的小麦产量,并采用多元回归分析法分析其对小麦产量的影响机制。结果表明,在相同的CO2浓度条件下,小麦产量随光照强度的增加而明显下降,日光照强度每升高0.5 MJ·m-2,最大减产幅度高达17.16%,平均减产9.40%。相同光照条件下,CO2浓度每升高100μmol·mol-1,平均增产11.27%,最大增产可达到22.08%。CO2浓度与光照强度之间存在负交互效应。表明在研究区光照已完全满足旱地春小麦产量的需求。In order to explore the effects of illumination intensity and CO2 concentration on wheat（ Triticum aestivum） grain yield,the grain yield under different illumination intensities and CO2 concentrations was simulated by validated Agricultural Production System Simulator Model（ APSIM） and cooperation factors were analysised by multiple regressions. The results showed that the grain yield rapidly decreased with the increase of illumination intensity under the same CO2 condition which had maximum grain yield losses of 17. 16% and the average grain yield losses of 9. 40% with the light intensity increased by 0. 5 MJ·m^- 2. The grain yield increased with the increase of CO2 condition under the same illumination intensity which had maximum grain yield losses of 22. 08% and the average grain yield losses of 11. 27% with the CO2 concentration increased by 100 μmol·mo^l- 1. There was negative interaction between light intensity and CO2 concentration which suggested the local environment was suitable for wheat growth.

关 键 词：光照强度 CO2浓度 APSIM 小麦产量 

分 类 号：S512.1[农业科学—作物学]