论文部分内容阅读
水稻综合农艺措施数学模型研究,是把“栽培措施——水稻生长发育”作为水稻生产过程的一个子系统,采用系统工程的理论和方法,研究各项技术措施对水稻生长发育,产量形成的影响,以数学模型的形式表达其数量关系。然后以此为工具,进行一定条件下的产量预测、优化栽培方案的制订及应变措施的决策。再将所研制的数学模型作为一个子模型,与土壤、气象、水稻病虫害等“生态——作物”子模型联立,形成高产稳产优质低耗的水稻生产栽培数学模型集,建立水稻生产技术的电脑咨询网络,服务于较大地区范围的水稻生产。根据以上设想,1984～1985年我们应用农业系统工程中“最佳模拟配合法”,在南京、丹阳、宜兴、宿迁等地进行了汕优3号、苏引粳1号、武复粳、徐稻2号等品种的农艺措施试验,在PC-1500电子计算机上,初步研制成适应当地生态条件的数学模型。本文以中粳稻苏引粳1号为例,阐述数学模型的研制、分析及优化方法。
The research on mathematical model of rice comprehensive agronomic measures is based on “cultivation measure-rice growth and development” as a subsystem of rice production process. Using the theory and method of system engineering, the effects of various technical measures on rice growth and yield formation are studied , In the form of mathematical models to express the number of relations. Then use this as a tool to forecast production under certain conditions, make plans for optimal cultivation plan and make decisions on contingency measures. Then, the mathematical model developed is used as a submodel to establish a mathematical model set for rice production and cultivation with high and stable yield, high quality and low consumption, and ecological and crop sub-models such as soil, meteorology and rice pests and diseases. Computer consulting network, serving a large area of rice production. Based on the above assumptions, from 1984 to 1985, we applied the “best simulation method” in agricultural systems engineering, and carried out a series of experiments including Shanyou 3, Suyinjing 1, Wufujing, Xu in Nanjing, Danyang, Yixing and Suqian Rice 2 and other varieties of agronomic measures test, PC-1500 in the computer, initially developed to adapt to the local ecological conditions of the mathematical model. In this paper, Suyin Japonica 1 as an example, elaborated the mathematical model of the research, analysis and optimization methods.