Effects of Balanced Fertilization on Wheat Growth and Nutrient Uptake and Utilization

TIAN Shengying; SUN Nan; LYU Xiumin; CUI Xiaoping; ZHANG Shanlei; LIU Xiaofei

doi:10.14069/j.cnki.32-1769/s.2023.06.005

Abstract：Balanced fertilization technology is an important measure to increase crop yield,improve fertilizer utilization efficiency,save costs and increase eficiency,and reduce agricultural non-point source pollution.This experiment set up a total of 9 treatments,namely no fertilization(CK),conventional fertilization(F),conventional fertilization without nitrogen(FN0),conventional fertilization without phosphorus(FP0),conventional fertilization without potassium(FK0),balanced fertilization(B),balanced fertilization without nitrogen(BN0),balanced fertilization without phosphorus(BP0)and balanced fertilization without potassium(BK0).The experiment compared the growth status of wheat under different nutrient deficiency conditions and the differences between balanced fertilization and conventional fertilization in wheat growth.The results showed that among the nutrient deficiency treatments,nitrogen deficiency was the most severe on wheat growth,followed by phosphorus deficiency,and potassium deficiency had the least impact on wheat growth.Compared with conventional fertilization,the balanced fertilization treatment increased the number of panicles,grains per panicle,and yield by 2.98％,3.55％and 5.39％,respectively.Compared with conventional fertilization treatment,the nutrient absorption and utilization efficiency of balanced fertilization treatment have been improved to varying degrees,and the total absorption of N,P and K increased by 5.00％,14.66％and 5.03％,respectively.The utilization efficiency of nitrogen fertilizer,phosphorus fertilizer and potassium fertilizer increased by 8.52％,2.32％and 24.20％,respectively.The average fertilizer utilization efficiency increased by 11.68％,and the economic benefit increased by 87.15 yuan/667 m2.