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本文在综述前人工作的基础上,对作物生产力的概念重新进行了阐述,提出作物生产力包括多层次的含义、各层次生产力代表不同的生产水平且限制因子不同,并对各层次生产力进行了定义。从大气-作物-土壤系统出发,探讨了冬小麦的生长发育及产量形成与各环境因子、能量投入之间的定量关系,采用动态模拟和统计分析相结合的方法,利用dBASEⅢ和BASIC语言,建立起了冬小麦生长发育及生产力形成的动态模拟软件,该软件可以根据不同需要对不同地区的冬小麦干物质累积、叶面积变化及土壤水分平衡进行计算,并可计算各层次的生产力。
Based on the review of previous work, this paper reinterprets the concept of crop productivity and proposes that crop productivity includes multiple levels of meanings. Each level of productivity represents different levels of production with different restriction factors and defines the levels of productivity . Based on the atmospheric-crop-soil system, the relationship between the growth and development of winter wheat and the formation of various environmental factors and energy inputs was discussed. By combining the dynamic simulation with statistical analysis, The dynamic simulation software for the growth and development of winter wheat and the formation of productivity can be used to calculate the dry matter accumulation, leaf area change and soil moisture balance of winter wheat in different regions according to different needs and to calculate the productivity at each level.