作物生产力模型及其应用研究

从农业生态环境的角度论述了作物生产力模型的产生背景，讨论了作物生产力模型发展的幼年期、少年期、青年期和成熟期4个阶段，从科学研究，农业作物管理和农业决策分析等方面论述了作物生产力模型在保护农业生态环境中的作用，讨论了作物生产力模型的不足之处主要为简单的模型的地区适应性不强，而复杂的模型则由于参数的难以获取，且不同研究区域基础数据格式的一致性问题，也导致模型的地区适应性比较弱，因而提出要建立通用，统一的数据格式，以使作物生产力模型在不同地区易于推广应用；最后针对作物生产力模型普遍适应性能比较弱的问题，对作物生产力模型与地理信息系统的结合进行了研究，并综述了目前在作物生产力模型的界面友好化方面的一些工作，提出建立通用的作物生产力模型界面是今后发展的重点所在。

Crop productivity model and its application

Within agricultural ecosystems the interaction between crop and surroundings is quite complicated. In order to know the feedbacks of crop to surroundings in agricultural ecosystem,a research on crop productivity model is becoming important. This paper discussed the backgrounds of the emergency of crop productivity model,thinking that the crop productivity model was a means which could be used to simulate growth process by mathematical ways and computer technology,and analyzed the physiology of crop growth and the correlation between crop and surroundings. At the same time,it discussed four phases of crop productivity model developing,including infancy,youth,adolescent and maturity. Secondly,the paper summarized the crop productivity model's function of agricultural eco-environment protection from three aspects,including scientific research,management of crop,and analysis of agricultural decision,and discussed the disadvantages of crop productivity model. The disadvantages embodied in three facets:1) though the simple crop productivity model could be used easily in practice,its regional adaptability was too weak;2) complicated crop productivity model had too much parameters to obtain,which made it difficult to use in practice;3) the inconsistency of basic data format in different research areas also made the model's regional adaptability too weak. It's indicated in this paper that the establishment of universal and uniform basic data format is favorable to the extension and application of crop productivity model in other regions. Geographic information system(GIS) was emerged in 1960,which has powerful functions of obtaining,depositing,managing and analyzing spatial data,and is useful to solve the problem of weakly regional adaptability. Meanwhile,friendly interface is favorable to the extension in common users. Finally,the paper discussed the combination of crop productivity model and geographic information system,summarized some researches on friendly interface of crop productivity model,and pointed out that the establishment of universal crop productivity model interface is the focus of the future.