Effects Of Different Fertilization On Growth And Soil Nutrients Of Potted Maize

The experiment studied the effect of the organic matter,nutrient,soil inorganic phosphorus,organic phosphorus classification,soil enzyme activity,microbial quantity,corn biomass,organic matter,nutrient and organic fertilizer combined by three different fertilization treatment methods of organic fertilizer,chemical fertilizer,organic fertilizer and fertilizer through the corn pot,the results show that:（1）Different fertilization treatments increased soil organic matter and nutrient content to varying degrees.The soil organic matter,total nitrogen and total phosphorus in each fertilization treatment increased by 2.07%-12.44%,5.71%-14.29% and 8.33%-19.44% respectively,and ammonium nitrogen,nitrate nitrogen and available phosphorus increased by 5.56%-10.24%、5.24%-14.8%、14.11%-20.4% respectively,the effect of single application of organic fertilizer to improve soil organic matter,total nitrogen and total phosphorus was the most obvious.Single application of chemical fertilizers increased ammonium nitrogen,nitrate nitrogen and available phosphorus was the most obvious,followed with organic fertilizer + chemical fertilizer treatment.The application of organic fertilizer alone was the slowest.（2）Different fertilization treatments increased soil enzyme activity and urease,acid phosphatase,catalase and invertase increased by 2.66%-18.6%,9.09%-24.46%,18.18%-27.27%,5.74%-26.44%,respectively.Single application of organic fertilizer,organic fertilizer + chemical fertilizer was the most obvious,and the effect of chemical fertilizer is general.（3）Different fertilization treatments increased the number of soil microbes,among which the increase of bacteria was the most obvious,followed with fungi and actinomycetes,which increased by 18.75%-43.75%,14.29%-28.57% and 4.55%-36.36%,respectively.The effect of single application of organic fertilizer on soil microbial quantity was the most obvious,followed with organic fertilizer + chemical fertilizer treatment,and the fertilizer effect was the worst.The effect of single application of organic fertilizer to increase the number of bacteria is stronger than that of fungi and actinomycetes.（4）Different fertilization treatments increased the content of different inorganic phosphorus and organic phosphorus components.Compared with the control,the increase of Ca₂-P and Ca₈-P in chemical fertilizer treatment,organic fertilizer + chemical fertilizer treatment was more obvious.The effect of organic fertilizer + chemical fertilizer and single application of organic fertilizer on Al-P and Fe-P content was higher than that of single application fertilizer.In the treatment,the increase of inorganic phosphorus component in chemical fertilizer treatment was higher than that in organic fertilizer treatment.The activity,medium activity,medium stability and high stability organic phosphorus increased by 5.23%-17.65%,7.70%-19.73%,1.49%-8.37%,7.19%-14.19%,respectively,and the increase of organic phosphorus component treated by organic fertilizer.The increase of organic phosphorus component treated by organic fertilizer was the most obvious,followed with organic fertilizer + chemical fertilizer treatment,and the effect of chemical fertilizer was general.（5）Different fertilization treatments significantly increased the phosphorus content and biomass of corn kernels and straw,the phosphorus content,straw phosphorus content,straw biomass and corn yield of each treatment reached 4.17%-9.07%,9.91%-16.53%,25.43%-32.68%,17.36%-36.18%,respectively,among them,the effect of organic fertilizer + chemical fertilizer treatment was the most obvious,followed with fertilizer,the effect of organic fertilizer was slower and the difference between treatments was not significant.