人类在采集、狩猎阶段完全依靠自然界所提供的食物为生。但自然界的食物受自然条件和气候变化的影响,空间上分布不均,时间上存在丰歉差异,导致人类食物供应不足,常常承受饥饿之苦。农业出现之后,饲养业与牧业的形成使食物开始稳定供应,可以通过储存以补亏缺之用,促进人类社会走 Human beings in the collection, hunting stage depends entirely on the food provided by nature for a living. However, food in nature is affected by natural conditions and climate change, is unevenly distributed in space, and there is an apology and apology difference in time. As a result, human food is in short supply and often suffer from hunger. After the advent of agriculture, the formation of rearing industry and animal husbandry has enabled the steady supply of food, which can be used to promote humankind by storing to make up for deficiencies