一、引言近年来微量元素对植物影响的研究有着很大的发展目前苏联正在进行大面积的生产试验,部分地区已开始应用到农业实践上,许多作物如小麦,玉米,亚麻,棉花等,应用了之微量元素肥料后均达到了增加产量,及改良品质的结果. 在应用微量元素的许多方式中,如直接施入土壤,根外追肥,及播种前浸种等,以播 I. INTRODUCTION The research on the influence of trace elements on plants has been greatly developed in recent years. At present, the Soviet Union is carrying out large-scale production trials. Some areas have started to be applied to agriculture. Many crops such as wheat, corn, flax and cotton are applied Of the trace element fertilizer have reached after the increase in yield, and improve the quality of the results in the application of trace elements in many ways, such as direct application of soil, root top dressing, and soaking before sowing to sow