一些有关农业起源的学说人类从原始状态进化到现代人类(智慧人)至少有四百万年。这种生物进化过程比起别的动物来是较为快速的。不过,我们了解现代智慧人对食物生产的演进所形成的文化发展过程,却不少于两万年。两万年前的人类是到处寻找食物和游猎的人。所有食物大都受自然环境的严格限制。一万年前才有了一些变化,有些地方人们开始家养动物和栽种一些植物。打那以后, Some doctrines of the origin of agriculture have evolved from their original form to modern humans (witnesses) for at least four million years. This biological evolution is faster than any other animal. However, we understand that the process of cultural development that modern intellectuals have evolved over the production of food is not less than 20,000 years. Humans twenty thousand years ago were the people who searched for food and hunting. Most foods are severely restricted by the natural environment. Ten thousand years ago, some changes were made. In some places, people began to raise animals and plant some plants. After that fight,