基于过程的冬油菜生长及产量花期渍害响应模型研究

项目名称： 基于过程的冬油菜生长及产量花期渍害响应模型研究

项目编号： No.31471415

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 农业科学

项目作者： 曹宏鑫

作者单位： 江苏省农业科学院

项目金额： 80万元

中文摘要： 以油菜为对象，拟利用生育期观测和叶龄标记方法、植物光合、生物量、根系形态参数及叶面积分析技术，选取不同类型油菜品种，在花期渍害胁迫和不同氮水平下，分析油菜生长发育及生理特性、产量及其形成与渍害影响因子间关系的时空变化模式，探究其花期渍害响应规律；采用系统分析方法和数学建模技术，建立油菜生长及产量花期渍害响应模型；再与本项目组已有油菜生长模型Rape-CSODS结合，构建基于过程的油菜生长及产量花期渍害响应模型；利用模型参数试验测定与调试、独立试验数据统计检验与校验及1:1作图等方法，分析所建模型精度，进一步改进与完善所建模型；利用所建模型对不同组合方案（地点、土壤、品种与渍害度）的定量模拟，揭示花期渍害胁迫下油菜植株地上部与根系生长与产量对品种与环境的响应机理。通过上述研究，拟解决以下两个关键科学问题：⑴油菜生长发育与生理特性及产量的花期渍害响应；⑵油菜生长发育与产量的花期渍害响应机理。

中文关键词： 数字农业；农业信息化；智能决策

英文摘要： Taking rapeseed as object, the space-time change patern in the relationships between growth and development, phsiological characteristics, yield, and yield forming for various rapeseed cultivars and waterlogging impact factors will be analysed under waterlogging at anthesis and various nitrogen levels using growth period observation, leaf number tag,and analysis of plant photosynthesis, biomass,root morphological parameters, and leaf area index, and response of their waterlogging at anthesis will be examed; the responses models of rapeseed growth and yield to waterlogging at anthesis will be developed adopting system analysis and mathematical modelling, and then the process-based responses models of rapeseed growth and yield to waterlogging at anthesis will be developed through combining Rape-CSODS developed by our group with the model developed in this study; using experiment measurement and adjusting of model parameters, model statistics test and verification with independent experiment data, and 1:1 chart, etc.,the model developed in this study will be further improved and perfected; the reseponse mechanism of rapeseed above-ground and root growth and development, phsiological traits, yield, and yield formation on waterlogging at anthesis will be illustrated adopting quatitative simulating using model developed in this study, various combination among sites, soil types, cultivars, and waterlogging degree.Through the above studies, the following two key scientifical issues: (1)the response of rapeseed growth and development on waterlogging at anthesis, and (2) the response mechanism of rapeseed growth and development, physiological traits, yield, and yield formation on waterlogging at anthesis, will be addressed.

英文关键词： digital agriculture;agricultural informatics;intelligent decision making