二龙山农场每年种植甜菜３万亩，占总播种面积的８．５％。从１９８８年开始进行航化作业，先后应用了稀土、增产菌、磷酸二氢钾、钛肥、活力素等５种微菌肥，取得了较好的增产效果和显著的经济效益。现把几年来应用的不同微菌肥的增产效果进行对比分析，结果简报如下。１... Erlongshan farm beet 30000 acres planted each year, accounting for 8.5% of the total sown area. Since 1988, we have started aeronautic and aeronautical operations. We have successively applied five kinds of microbial fertilizers, rare earths, bacteria, potassium dihydrogen phosphate, titanium fertilizer and vitamins, and achieved good yield-increasing effects and remarkable economic benefits. Now several years of application of different microbial fertilizer yield comparative analysis of results, the results presented below. 1 ...