二、“民以食为天”我国二千多年前的古书《管子》中有这样一句话:“人之所生,衣与食也。”后来,曹植也说过类似的话:“寒者不贪尺玉,而思短褐;饥者不愿千金,而美一食。”衣食是人类生存的根本需要,一刻也不能短缺。按现代的观点来看,“食”就是营养的供给。营养供给包括两个方面,能量供给和养分供给。食物是能量和养分的源泉。 Second, “food for the world” More than two thousand years ago in our ancient book “pipe” there is such a sentence: “people born, clothing and food also.” Later, Cao Zhi also said something similar: Not greedy jade, and think short brown; hunger do not want to daughter, but the United States eat. “Food and clothing is the fundamental need of human existence, the moment can not be short. From a modern point of view, ”food" is the supply of nutrition. Nutritional supply includes two aspects, energy supply and nutrient supply. Food is a source of energy and nutrients.