摘要
作物干物质生长过程取决于光合作用所产生干物质的过程和呼吸作用消耗干物质的过程。建立了夏玉米生长和吸氮的耦合作用模型 ,根据气象条件和土壤水分、氮素状况 ,逐日计算夏玉米干物质形成过程和根系吸氮过程。模拟结果表明 ,模型较好地模拟了夏玉米光合作用 。
A model for simulating interaction between corn biomass accumulation and nitrogen uptake was established in this paper. Daily meteorological data, soil moisture and nitrogen contents were used as input data for calculating photosynthesis and respiration rate. Simulated results were compared with field measured data from tree treatments. The simulated daily photosynthesis rate, dry matter accumulation and nitrogen uptake were consistent well with the experimental data.
出处
《灌溉排水学报》
CSCD
北大核心
2003年第2期9-12,共4页
Journal of Irrigation and Drainage
基金
国家自然科学基金"九五"重点资助项目 (5 983 93 2 0 )
关键词
光合作用
干物质累积过程
动态模拟
根系吸氮
photosynthesis
biomass formation processes
dynamic model
nitrogen uptake.
