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一.引言动植物生命活动中需要微量元素的发现是最近30—40年来生物科学领域中最重要的成就之一。这个发现使人们对有机体的营养概念有了重大的转变。微量元素在土壤、植物和动物体内的分佈以及其生理上的作用的研究已成为国内外很多生理学家、生物化学家、农业化学家、土壤学家以及农学家等极有兴趣的研究题目。并在苏联及其他一些国家的农业实践中得到了应用。在苏联的很多肥料手册中都载有应用微量元素的种类、方法、时间、浓度等。
I. INTRODUCTION The discovery of the trace elements required for animal and plant life activities is one of the most significant achievements in the field of biological science in the last 30-40 years. This discovery led to a significant shift in the concept of nutrition in organisms. The distribution of trace elements in soils, plants and animals as well as their physiological roles has become a subject of great interest to many physiologists, biochemists, agrochemicalians, soil scientists and agronomists both at home and abroad. It has also been applied in the agricultural practice in the Soviet Union and some other countries. Many fertilizer manuals in the Soviet Union contain the type, method, time, concentration, etc. of the trace elements used.