1974年10～11月份,我们协同开原县农业局和靠山公社党委进行了土壤普查试点。由公社农科站具体负责,从各大队抽调1名知识青年组成了土壤普查队伍。经过发动群众采土化验、深入调查,基本摸清了全社的地势、土质和土壤肥力状况。并绘制了地势和土质、土壤侵蚀、土壤肥力等级、土壤有机质和土壤速效磷等五幅色图。为科学种田,指导生产提供 From October to November 1974, we collaborated with the Kaiyuan County Bureau of Agriculture and the Party Committee of the Reliance Commune to conduct a soil census experiment. Responsible by the commune agricultural station, from the brigade deployed a knowledge of youth formed soil census team. After mobilizing masses to take soil tests and conducting thorough investigations, the situation of the topography, soil quality and soil fertility of the whole community was basically ascertained. And draws five color maps of topography and soil quality, soil erosion, soil fertility level, soil organic matter and soil available phosphorus. For scientific farming, provide guidance for the production