Abstract:

Abstract The problem of exploiting the potentialities of the soil nutrients is discussed in this paper. Theregime of the resources of soil nutrient elements in China is analyzed. The questions and the ways in promoting the effective transform and transfer of the soil nutrient elements in the soil-plant system are expounded.The importance of enhancing the systematic study of the effective transform, transfer, uptake and use effi-ciency of soil nutrients by using the theories and means of thermodynamics and dynamics, and of coordinatingthe relation of supply and uptake (and utilization) of nutrients from two sidessoils and cropsare emphasized.

Key words: Soil nutrient resources Soil-crop system Transform of nutrients transfer UptakeUse efficiency

摘要：

 本文就发掘土壤养分资源潜力问题,分析了我国土壤养分元素资源状况,论述了土壤——作物系统中促进养分元素的有效运转研究中的问题和途径.强调了用热力学和动力学理论和方法加强对养分元素的有效转化、运转、吸收和利用效率的系统研究.并从土壤和作物两个方面协调养分供应与吸收利用关系的重要性.

关键词:  土壤养分资源, 土壤—作物系统, 养分转化, 运移, 吸收, 利用效率