锌元素在土壤中含量的过多或不足，会影响各种农作物质量的好坏，因而通过食物链直接影响人和动物的生长发育和维持正常机能。因此研究土壤中锌元素的背景水平，对土地的开发利用，防止环境污染和因地制宜地使用锌肥促进农作物产量的提高和揭示人的锌营养与环境化学的关系，都 The excessive or insufficient content of zinc in the soil can affect the quality of various crops and thus directly affect the growth and development of human beings and animals and maintain the normal function through the food chain. Therefore, it is necessary to study the background level of zinc in the soil, to promote the development and utilization of the land, prevent the environmental pollution, and to use the zinc fertilizer according to the local conditions to promote the increase of crop yield and reveal the relationship between human zinc nutrition and environmental chemistry