Effect of Post-harvest Soil After Applying Different Fertilizer on Soil Microorganism and Maize Growth

The purpose in the paper was to conduct an investigation in effect of post-harvest soil after applying different fertilizer on soil microbiological characteristic and maize growth by using pot experiment.The result showed that maize biomass yield in the post-harvest soil after applying compound bio-fertilizer were increased by 51.91%,7.96% and 5.21% respectively compared with control,organic fertilizer and organic bio-fertilizer treatment.The maize cob weight in the compound bio-fertilizer treatment were increased 97.61% and 16.24% respectively compared with control and organic fertilizer.Compared with control,it was significant to increase population of bacteria and bacillus bacteria and total microorganism(bacteria and actinomycetes and fungi),to increase microbial biomass carbon and nitrogen,and there was a trend to decrease population of fungi in the post-harvest soil after applying bio-fertilizer.Compared with organic fertilizer,it was also significant to increase microbial biomass nitrogen and activity of acid phosphates in the bio-fertilizer treatment soil.The maize biomass yield or corn cob weight were closely positive correlative with the population of bacteria and bacillus bacteria and actinomycetes and total microorganism,the microbial biomass carbon and nitrogen,the activities of urease and acid phosphatase,were negative correlative with the population of fungi.They were negative correlative with soil substrate induced respiration in medium term of maize growth,but positive correlative with the induced respiration and the activity of alkali phosphatase in late term of maize growth.