Effects of three microbial fertilizers on spring wheat yield and nutrients accumulation

The application effects of three microbial fertilizers(biological nitrogen fertilizer,biological phosphate fertilizer and compound bacterial fertilizer),developed by microbial research room,institute of soil,fertilizer and water saving agricultural,Gansu academy of agricultural sciences,were studied on spring wheat through field experiment.The results showed that when biological nitrogen fertilizer substituted for a half amount of nitrogen fertilizer,the grain yield and biomass of spring wheat was significantly higher than application of the same amount of fertilize combined with the carrier by 11.77% and 12.42%,while the grain yield,biomass,grain number per panicle,panicle length,nutrients accumulation increased by 13.80%,6.20% and 17.38%～25.37%,respectively.Application of biological nitrogen fertilizer combined with full amount of fertilizer had no obvious effect on yield of spring wheat,but the accumulation of nutrients of spring wheat increased by 4.78% to 14.30%.Biological phosphate fertilizer and compound bacterial fertilizer combined with a half amount of fertilizer or full amount of fertilizer had no obvious effect on increasing spring wheat yield.Biological phosphate fertilizer combined with a half amount of phosphate fertilizer increased the accumulation of nutrients of spring wheat by 4.03% to 6.04%,and biological phosphate fertilizer combined with a full amount of fertilizer increased total phosphorus accumulation.Compound bacterial fertilizer had no obvious effect on the accumulation of nutrients.It is showed that biological nitrogen fertilizer had stronger role on the nutrients accumulation and yield of spring wheat,and it with a half amount of fertilizer combined application was better than with the full amount of fertilizer,while biological phosphate fertilizer and compound bacterial fertilizer had poor application effect on spring wheat.