一、引言微量元素为植物生活所必需的营养元素,共与多量元素对植物营养的关系仅为量上的差异,而非质上的区别。近来,微量元素不仅在植物生理上的研究有很大的发展,而在社会主义的农业实践上亦有其重要意义。本试验是以锰、铜、硼、锌四种微量元素分别喷射处理番茄植株,观察分析其效 I. INTRODUCTION Trace elements are necessary nutrients for plant life. The relationship between the amount of trace elements and plant nutrition is only the difference in quantity, but not the difference in quality. Recently, trace elements not only have a great development in plant physiology, but also have great significance in the practice of socialist agriculture. In this experiment, the tomato plants were sprayed with four kinds of trace elements of manganese, copper, boron and zinc respectively, and their effects were observed and analyzed