Effects of Functional Slow-Release Bulk Blending Fertilizer on Maize Yield and Soil Nitrogen Content
The functional slow-release bulk blending fertilizer is developed according to the rule of maize fertilization requirement.In order to investigate the effects of the fertilizer on maize growth and soil nitrogen content,a field plot experiment is carried out.Six treatments are set up in the experiment,with no fertilization treatment(CK1)and common bulk blending fertilizer application treatment(CK2)as the control.The biological characters and yield of maize,and nitrate nitrogen,ammonium nitrogen and alkaline nitrogen content in the soil after harvest are investigated.The results show that under the same fertilization condition,the yield of maize of functional slow-release bulk blending fertilizer treatment is 7.98%higher than those of treatment CK2 and the difference is significant.In the condition that the application amount of functional slow-release bulk blending fertilizer is reduced by 20%,it will not cause a reduction in maize yield.The nitrogen agronomic utilization efficiency of functional slow-release bulk blending fertilizer treatment is 7.98%-26.82%higher than that of treatment CK2.In the condition of equal fertilizer application rate,the contents of nitrate nitrogen and alkaline nitrogen in 0-20 cm soil layer of functional slow-release bulk blending fertilizer treatment are increased by 10.34%and 17.39%,respectively,compared with that of treatment CK2,and the content of ammonium nitrogen is decreased by 14.29%.
slow-release fertilizerbulk blending fertilizermaizenitrogen use efficiencyagronomic utilization efficiency
NETL
NSTL
万方数据
