Page 65 - 《华中农业大学学报（自然科学版）》2022年第2期

60 华 中 农 业 大 学 学 报 第 41 卷

Effects of one-off fertilization of formula fertilizer with reducing N

while increasing P and K on maize yield and nutrient use efficiency

2
1
3
3
3
SUN Xiaomei ,WU Qinghui ,LI Hongjie ,HUANG Yufang ,ZHAO Yanan ,YE Youliang 3
1.Henan Province Soil and Fertilizer Station，Zhengzhou 450002，China；
2.College of Resources and Environment，China Agricultural University，
Beijing 100193，China；
3.College of Resources and Environment，Henan Agricultural University，
Zhengzhou 450002，China

Abstract In order to study the effect of compound fertilizer of different formulations applied on sum⁃

mer maize at one time，a field experiment was conducted to analyze maize yield and component factors，ear
traits，nutrient accumulation，nutrient utilization efficiency and economic benefits by setting 6 formulation
treatments（30-5-5，33-5-8，28-7-9，27-7-12，28-11-10，29-6-10）. The results show that the average yield
2
of maize under different formulas（28-7-9，27-7-12，28-11-10，29-6-10）reaches 10.5 t/hm ，the two high-ni⁃
trogen formulas（33-5-8 and 30-5-5）have lower yields，and the other high phosphorus and/or potassium
formulas can increase yields by 6.3%-9.5% and 7.0%-10.2%. Compared with the two high-N formulas，the
length of bare tip，the number of missing grains and the seed setting rate of maize increased for the formula
with high-P/K. In terms of nutrient utilization indexes，the nutrient harvest index and internal efficiency of
the high-N formula were lower than those of other treatments. The total and net returns of the high-P/K
formula increased by 4.6%-6.9% and 6.1%-9.4% compared to the 30-5-5 formula，and by 9.3%-11.7%
and 19.3%-23.4% compared to the 33-5-8 formula. Under the conditions of this study，the yield，nutrient
utilization efficiency and economic benefit of the formula with reducing N，increasing P and K were better
than the high-N formula.
Keywords fertilizer formulas；maize；one-off fertilization；nutrient use efficiency；fertilizer efficiency
increase；reasonable formula；high yield and efficiency

（责任编辑：赵琳琳）