[内容摘要]本文的主要目的是农业程序与乡村生活的关系。一种作物的技术程序是一个完整的系统，这种系统具有长期的稳定性，是长期对环境适应的结果。从劳动力需求上看有一个双峰型变化，这种特点对华北农村生活周期产生了深远的影响，不但影响了劳动力市场，也影响到畜牧业和营养的周期，近代乡村生活的许多方面也是受这种双峰型劳动力投入曲线影响的结果。

关键词：农业程序 生活周期

Agriculture and life cycle in North Chinese in modern history
The main object of this article is to discuss the relationship between agricultural procedure and rural life. The technological procedure of crop is a integrated system, have highly stability in history. It is of long time of adaptive action of crop and its environment. It took the form of two peak in labor curve, and this form affects peasant’s life cycle profound and lasting. Labor market, stock raising, human food nourishment cycle and a lots of other country life in North Chinese ……