辽宁省20世纪70年代以来,由于大量施用化肥,农作物产量大幅度提高的同时,一些地区发生了大面积作物生理病害,主要原因与土壤有效态微量元素供应不足有直接关系。这种现象有的地区还有扩大的趋势,这不仅影响了作物生长发育,也降低了产量和品质。因此,近年来我省微量元素肥料已有相当大面积使用,但因无统一分级标准,生产实践中盲目性和浪费性很大,为有效地、有针对性地科学指导施用微量元素肥料,本项研究通过对辽宁省全省不同地区、不同耕作类型土壤样品进行了有效态铜、锌、铁、锰、硼含量的检测分析,在得到大量的数据基础上分析了全省耕作土壤微量元素含量的丰缺水平。并结合微量元素肥效试验结果确定了辽宁省土壤有效态铜、锌、铁、锰、硼分级标准,对我省科学使用微量元素肥料具有重要指导意义。 Since the 1970s, Liaoning Province, due to the large-scale application of chemical fertilizers and the dramatic increase of crop yields, large-area crop physiological diseases have occurred in some areas, which is directly related to the shortage of available soil trace elements. There are still some areas where this phenomenon is expanding. This not only affects crop growth and development but also reduces yield and quality. Therefore, in recent years, trace element fertilizers in our province have been used in quite a large area. However, because there is no uniform classification standard, the blindness and waste in the production practice are great. In order to effectively and pertinently guide the application of trace element fertilizers In this study, the contents of available copper, zinc, iron, manganese and boron in soil samples from different regions and different tillage types in Liaoning Province were measured and analyzed. Based on a large amount of data, the contents of trace elements The abundance of lack of level. Combined with the results of trace element fertilization test, the classification standard of soil available copper, zinc, iron, manganese and boron in Liaoning province was determined, which is of great guiding significance for the scientific use of trace element fertilizers in our province.