人类活动(如耕作等)、捕食者活动(如蚂蚁、蚯蚓等)及一些无生命因素(如下雨、冰雪覆盖等),使土壤中的杂草种子在土壤中各个方向上不断运动,运用L eslie矩阵和M arkov链建立了一个具年龄结构的杂草种子在土壤中随时间动态变化的一般矩阵模型. Human activities (such as farming), predator activities (such as ants, earthworms, etc.) and some non-life factors (such as rain, snow and ice cover), so that weeds in the soil in all directions in the soil continue to move, the use of L The eslie matrix and the M arkov chain establish a general matrix model of a weed seed with age structure that varies dynamically with time in the soil.