摘要
为了研究气候变化对西辽河平原玉米生产潜力的影响,采用机制法,对1951—2008年西辽河平原玉米光合生产潜力、光温生产潜力和气候生产潜力变化动态进行研究。结果表明,1951—2008年西辽河平原玉米光合生产潜力、光温生产潜力和气候生产潜力均呈双波型变化曲线,其中光合生产潜力总体呈下降趋势,在1981年发生突变下降;光温生产潜力呈上升趋势,在1978年突变减少,1997年突变增加;气候生产潜力总体上呈下降趋势,在1957年突变增加。自1951—2008年以来,光温和气候生产潜力的差值趋于增大,表明降水对玉米生产潜力的制约加强。
To investigate the impact of climatic variation in potential maize productivity in the plain of the West-Liao River.By using mechanism method,the dynamic changes of photosynthetic productive potential,light-temperature potential productivity and climatic potential productivity were studied.The results indicated that：their change appeared a double wave pattern curves.Photosynthetic productive potential was down overall,and mutation declined in 1981,light-temperature potential productivity emerged the rise overall,mutation dropped in 1978 and mutated increased in 1997,climatic potential Productivity was fall overall,mutation increased in 1957.The difference of light-temperature potential productivity and climatic potential Productivity increased,it evidenced the constraints of precipitation to maize production increased in recent 58 years.
出处
《中国农学通报》
CSCD
北大核心
2011年第30期16-20,共5页
Chinese Agricultural Science Bulletin
基金
国家重点基础研究发展计划(973计划)项目"主要粮食作物高产栽培与资源高效利用的基础研究"(2009CB118600)
内蒙古民族大学科研创新团队支持计划项目"内蒙古东部地区主要作物高产栽培与资源高效利用研究"(NMD1003)
关键词
气候变化
玉米生产潜力
西辽河平原
climate change
corn climatic potential productivity
the plain of the West-Liao River
