Effects of Phosphate Fertilizer Combined with Fulvic Acid on Maize Yield and Phosphorus Uptake and Utilization

doi:10.11923/j.issn.2095-4050.cjas2025-0106

Abstract

Abstract:

In light of the low phosphorus fertilizer utilization efficiency and the potential risk of non-point source pollution in the corn production system of the Tumochuan Plain, this study investigated the effects of combined application of fulvic acid and phosphorus fertilizer. Corn yield, dry matter accumulation in various plant organs, and phosphorus uptake were measured to calculate phosphorus fertilizer utilization efficiency. The effects of fulvic acid on phosphorus absorption and corn yield were analyzed, and an appropriate application rate of fulvic acid for the region was determined. The results indicated that (1) the appropriate application of 96 kg/hm² P₂O₅ combined with 450 kg/hm² fulvic acid (P₁+FA₃) could significantly enhance corn yield by 7.49% to 27.96%. (2) The P₁+FA₃ treatment promoted the biomass accumulation of various above-ground organs of corn. Specifically, stem biomass increased by 18.85% to 35.26%, leaf biomass by 13.46% to 23.64%, and grain biomass by 9.68% to 27.41% compared to other treatments. (3) The P₁+FA₃ treatment significantly improved the absorption and utilization efficiency of phosphorus fertilizer, enhanced agronomic efficiency of phosphorus fertilizer and partial productivity of phosphorus in corn. In conclusion, within the corn production system of the Tumochuan Plain, the combined application of 450 kg/hm² fulvic acid under an appropriate phosphorus fertilizer rate could synergistically improve both corn yield and phosphorus use efficiency.

Key words: fulvic acid, maize, phosphorous, yield, phosphorus utilization rate

WANG Lisha, ZHAO Chenqi, ZHANG Yutong, ZHANG Li, LIU Hongbo, TIAN Wei, ZHANG Liqing, CHEN Yang. Effects of Phosphate Fertilizer Combined with Fulvic Acid on Maize Yield and Phosphorus Uptake and Utilization[J]. Journal of Agriculture, 2025, 15(12): 44-50.

Figures/Tables 6

References 30

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处理	黄腐酸	N	P₂O₅	K₂O
P0	0	225	0	90
P0+FA2	300	225	0	90
P1	0	225	96	90
P1+FA1	150	225	96	90
P1+FA2	300	225	96	90
P1+FA3	450	225	96	90
P1+FA4	600	225	96	90
P2	0	225	120	90

处理	黄腐酸	N	P₂O₅	K₂O
P0	0	225	0	90
P0+FA2	300	225	0	90
P1	0	225	96	90
P1+FA1	150	225	96	90
P1+FA2	300	225	96	90
P1+FA3	450	225	96	90
P1+FA4	600	225	96	90
P2	0	225	120	90

处理	磷肥吸收利用率/%	磷肥偏生产力 /(kg/kg)	磷肥农学效率 /(kg/kg)
P0	—	—	—
P0+FA2	—	—	—
P1	8.01±0.96e	109.47±2.72bc	10.00±0.25d
P1+FA1	11.61±0.89d	113.69±2.83b	14.22±0.35c
P1+FA2	13.75±0.55c	118.42±5.09ab	18.94±0.81b
P1+FA3	19.19±0.57a	127.28±5.38a	27.81±1.17a
P1+FA4	11.55±1.49d	117.39±5.44ab	17.91±0.83b
P2	15.06±0.69b	97.59±5.62cd	18.01±1.04b

处理	磷肥吸收利用率/%	磷肥偏生产力 /(kg/kg)	磷肥农学效率 /(kg/kg)
P0	—	—	—
P0+FA2	—	—	—
P1	8.01±0.96e	109.47±2.72bc	10.00±0.25d
P1+FA1	11.61±0.89d	113.69±2.83b	14.22±0.35c
P1+FA2	13.75±0.55c	118.42±5.09ab	18.94±0.81b
P1+FA3	19.19±0.57a	127.28±5.38a	27.81±1.17a
P1+FA4	11.55±1.49d	117.39±5.44ab	17.91±0.83b
P2	15.06±0.69b	97.59±5.62cd	18.01±1.04b