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前言微量元素和大量元素一样,是作物生长发育不可缺少的。用量虽少,作用甚大,这方面的研究受到了普遍的重视。随着试剂纯度的提高和化学分析精度的增加,植物营养中微量元素的重要性已有进一步的发现。钢、锰、铜、锌等已被列入植物营养中必要的元素。近些年来,进一步探讨了各种微量元素在植物体内生化过程中的作用机制,有的微量元素能参加各种酶的活动,甚至于是某些酶的活动中心。在应用上,已由室内试验到大量应用,初步研究了各种微量元素对农作物产量和品质的影响。我国微量元素的研究和应用工作发展迅速,自1977年以来,已从微量元素的含量与分布及肥效研究过渡到一系列理
Preface Trace elements, like many elements, are indispensable for crop growth and development. Although the amount is small, a great role in this area has received universal attention. As reagent purity increases and chemical analysis accuracy increases, the importance of trace elements in plant nutrition has been further uncovered. Steel, manganese, copper, zinc, etc. have been included in plant nutrition essential elements. In recent years, further discussion of the role of various trace elements in the biochemical processes in plants, and some trace elements can participate in various enzyme activities, and even some of the enzyme activity center. In the application, it has been experimentally applied to a large number of indoor experiments to study the effects of various trace elements on crop yield and quality. The research and application of trace elements in our country have been developing rapidly. Since 1977, the research has been carried out on the content and distribution of trace elements and the study on the effect of fertilizer efficiency