摘要
根据作物群体光合作用特性与宏观气候生态条件的密切关系,提出了作物气候生产力是由作物气候生产“潜力项”和生物气候“限制项”组成的。“潜力项”可用光合作用过程的气候生产潜力模式模拟,“限制项”则根据不同关键期的主要限制性生物气候因子的影响求算。据此模式,利用1985～1989年冬小麦田间试验资料及同期地面气象平行观测资料(陕西,泾阳),建立了冬小麦气候生产力宏观动态模拟模型。结果表明,冬小麦产量的“潜力项”加“限制项”模拟结果与实际产量相当接近,平均相对误差小于5%。说明运用宏观气候潜力模拟加生物气候因子统计订正的方法,是一种适于农业气象产量预报业务应用的新途径。
Based on the close relationship between the photosynthetic characteristics of croppopulation and ecological conditions of macro-climate,it is suggested that crop climateproductivity consist of the“potential item”of crop climate productivity and the biologicalclimate“constraint item”.The“potential item”can be simulated by using the model of cli-mate production potential in photosynthetic process.The“constraint item”is calculated inaccordance with the effects of the major biological climate factors in various key periods.The macro-dynamic simulation model of climate productivity in winter wheat is estab-lished using this model according to the 1985～1989 field experimental data of winterwheat and the parallel observed weather date of ground surface in the same period(Jingyang,Shaanxi).The results showed that the“potential item”plus“the constraintitem”simulation of winter wheat yield is close to the actual yield with an average errorless than 5,thus,indicating that the use of the macro-climate potential simulation plusthe method of biological weather factor statistics is a new approach sut table to the pre-diction of agro-climate crop yields.
出处
《干旱地区农业研究》
CSCD
北大核心
1992年第4期1-8,共8页
Agricultural Research in the Arid Areas
关键词
冬小麦
气候生产力
动态模拟模型
winter wheat
climatic productivity
dynamtc simulation model
