从1984年起连续4年在辽宁省20个点上进行国光苹果应用稀土试验、示范研究,供试国光苹果10～20年生,稀土为河南商丘冶炼化工厂产品“农乐益植素”。试验内容包括稀土应用的效果及适宜浓度筛选、喷施时期试验。各点以单株为小区,重复6～10次。结果表明,施用稀土对国光苹果提高品质有突出效果,可提早着色10～15天,果色艳丽,橙红均匀,有光泽,全红果率增加11.5～13.9％ From 1984 onwards for four consecutive years in Liaoning Province, 20 points on the application of Guoguang Apple rare earth experiments, demonstration studies for the national light apple 10 to 20 years of research, rare earth Henan Shangqiu smelting chemical plant products “agricultural benefit beneficial plant.” The test includes the effect of rare earth application and appropriate concentration screening, spraying period test. The individual plants for the district, repeat 6 to 10 times. The results showed that the application of rare earth Guoguang apple to improve the quality of outstanding results, early coloring 10 to 15 days, bright color, orange red uniform, shiny, red fruit rate increased by 11.5 to 13.9%