水稻冠层雾滴沉积与传输机理的模拟与仿真

项目名称： 水稻冠层雾滴沉积与传输机理的模拟与仿真

项目编号： No.31471416

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： 朱德峰

作者单位： 中国水稻研究所

项目金额： 75万元

中文摘要： 精确模拟水稻冠层农药雾滴的沉积以及传输机理的仿真模型，能为优化农药喷施方法、农药制剂配方和喷雾技术参数等研究提供一个有效而又经济的工具。针对目前国内外模拟作物冠层雾滴分布的研究还相当薄弱的现状，本项目拟选择重要粮食作物-水稻，从其冠层形态结构、叶片表面特性、雾滴的几何与物理特性、雾滴的行为分析与沉积特性等方面入手，研究水稻冠层空间雾滴传输路径以及分布状态的模型与可视化仿真算法。具体包括：1)研究水稻冠层结构模型和雾滴喷射模型；2) 基于对碰撞前后雾滴行为的分析，研究建立水稻冠层内雾滴沉积与传输机理模拟模型；3)研究高效、低成本代价的雾滴传播路径追踪算法； 4)提出基于硬件加速的水稻冠层与雾滴交互过程的可视化模拟算法。研究将解决水稻冠层雾滴分布与传输模拟研究中的若干难点问题，为探索稻田精准施药、喷雾技术参数优化等问题提供新的方法。

中文关键词： 虚拟植物；水稻栽培；精准农业；雾滴沉积

英文摘要： Models for accurately simulating pesticide droplet deposition and transmission mechanism in rice canopy can provide an effective and economic tool to optimize methods for spraying pesticide, adjuvant formulation, and spray parameters. However, the current studies on modeling of spray droplets deposition on crops are still very limited. Therefore, we are going to study the modeling and visualization of spray deposition and transmission on rice plant in this research project, from the points of canopy structures, characteristics of leaf-surface, physical and spatial characteristics, behavior analysis and deposition characteristics of droplets. The detailed contents of this research include: 1) to establish models that simulating the structure of rice canopy and spray of droplets; 2) to simulate the physical mechanisms of spray deposition and transmission within rice plant canopy, based on the analysis of the droplets' behavior before and after the collision happens; 3) to propose the tracing algorithm of droplets transmission path with high efficiency and low-cost; 4) to propose the algorithms to visually simulate and render the natural scenes of the interactions between rice canopy and droplets, which are based on hardware acceleration. Our studies will solve the problems in simulation of distribution and transmission of droplets within plant canopies, and can provide new methods and tools for some agricultural applications, such as precision pesticide in rice fields and optimization of spray parameters.

英文关键词： Virutal plant;Rice cultivation;Precision agriculture;Droplet deposition