Comparative experiment on fertilizer utilization efficiency between single season rice fields under different fertilization methods
To investigate the absorption and utilization of fertilization between single season rice fields under different fertilization methods,Guanliangyouhuazhan was used as the material,9 different fertilization treatments were set up(PK,conventional fertilization nitrogen free zone;NK,conventional fertilization in phosphate free areas;NP,conventional fertilization in potassium free areas;NPK,conventional fertilization in the entire application area;PK1,deep lateral fertilization in nitrogen free areas;NK1,deep lateral fertilization in phosphate free areas;NP1,deep lateral fertilization in potassium free areas;NPK1,deep lateral fertilization in the entire application area;blank area,no fertilization),to determine the effects of each treatment on rice agronomic traits,yield,and fertilizer utilization efficiency.The results showed that under the same fertilizer type and quantity conditions,the ear length,total number of grains per ear,and seed setting rate in the mechanical side deep fertilization area were higher than those in the conventional fertilization area.The NPK1 treatment had the highest plant height,ear length,total number of grains per ear,and seed setting rate.Compared with conventional fertilization,mechanical side deep fertilization had increased grain yield at the same fertilization level;the highest grain and stem leaf yield was achieved with NPK1 treatment.The utilization rates of nitrogen,phosphorus,and potassium fertilizers in conventional fertilization were 36.95%,31.07%,and 42.50%,respectively,while the utilization rates of nitrogen,phosphorus,and potassium fertilizers in mechanical side deep fertilization were 45.18%,38.59%,and 49.99%,respectively.Overall,the application of mechanical side deep measurement for nitrogen,phosphorus,and potassium fertilizer application can achieve higher rice yields and higher fertilizer utilization efficiency.
single season ricemechanical side deep fertilizationrice yieldfertilizer utilization efficiency
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