冬小麦根系生长二维仿生模拟

Two-dimension Biological Simulation for Winter Wheat Root System Growth

以实际冬小麦根系生长试验的观测值为限制性条件,从生命进化的观念出发,把水分含量、水分梯度和温度分布等环境因素作为影响植物根系生长的环境因子,建立根系生长准则,结合非饱和多孔介质中传热传质的数学模型,对不同生长期的根系生长进行了二维仿生模拟,分析了根量分布规律,再现了冬小麦地下根系部分的动态生长过程。结果表明:小麦根系生长呈现出明显的"向水性"。

According to the measured results, a biological model for simulating the winter wheat root system growth was developed, in which water content, moisture gradient and temperature are defined as the dominating environment factors during plant root growth. Based on the heat-moisture transfer model in unsaturated soil, the two-dimension simulation for winter wheat root system growth in soil was conducted in the context of the biological evolution idea and the dynamic growing course of winter wheat root system re-appeared. The distribution rule of winter wheat root system in different vegetative periods was also analyzed. The simulation result indicates that winter wheat root system has obvious hydrotropism characteristic during its growing course.