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近十年来,在土壤科学中有兩件新成就特别引起了人們的注意。它們是:(1)利用合成的有机螯接剂来改善土壤中某些营养元素的供应状况;(2)利用合成的高分子有机化合物来改良土壤結构状况。这兩类制剂在土壤上的应用,都是在1952年以后才开始的。它們之所以同时出現,并不是偶然的事。它首先标志着土壤科学和近代化学知識的深入融合;其次,当然也是近代有机合成化学工业发展的結果。在本文里,我們拟专就螯接剂的性质、作用及其最近应用的經驗作一槪括的介紹。
In the last decade, two new achievements in soil science have drawn particular attention. They are: (1) the use of synthetic organic chelating agents to improve the availability of certain nutrients in the soil; and (2) the use of synthetic high molecular weight organic compounds to improve the soil structure. The application of these two types of preparations to the soil did not begin after 1952. It is not by chance that they occur at the same time. It first marks the in-depth integration of soil science and modern chemistry; and secondly, of course, the result of the development of the modern organic synthesis chemistry industry. In this article, we intend to give a cursory introduction to the nature and role of chelating agents and their recent applications.