磷,是作物正常生长发育所必需的主要元素之一。因土因作物合理增施磷肥,能明显地提高作物的产量和改善作物的品质,特别是在冬种作物上施用磷肥,具有“施磷与不施磷,产量相差一百斤”之效果,为此,群众称之为“灵肥”。为了改变群众只相信过磷酸钙而不因土施肥,进一步明确酸性土壤施用不同磷肥对大麦的增产效果,并初探其增产原因,于82～84年连续二年进行了试 Phosphorus is one of the main elements necessary for the normal growth and development of crops. The rational application of phosphate fertilizer to soil-based crops can obviously increase the yield of crops and improve the quality of crops. In particular, the application of phosphate fertilizer on winter crops has the effect of “a difference of one hundred pounds between phosphorus and phosphorus” To this end, the masses call it “spiritual fertilizer.” In order to change the masses only believe that over-calcium phosphate without soil fertilization, further clarify the acid soil application of different phosphorus fertilizer on barley yield, and to explore the reasons for its increase in 82 to 84 for two consecutive years of the trial