Synergistic Effects of Fertilization on Maize Yield and Quality in Northeast China: A Meta-Analysis

Xiaoqi Gao, Lingchun Zhang, Yulin An, Shaojie Wang, Guozhong Feng, Jiayi Lv, Xiaoyu Li () and Qiang Gao
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Xiaoqi Gao: Key Laboratory of Sustainable Utilization of Soil Resources in the Commodity Grain Bases in Jilin Province, College of Resources and Environmental Sciences, Jilin Agricultural University, Changchun 130118, China
Lingchun Zhang: Key Laboratory of Sustainable Utilization of Soil Resources in the Commodity Grain Bases in Jilin Province, College of Resources and Environmental Sciences, Jilin Agricultural University, Changchun 130118, China
Yulin An: Key Laboratory of Sustainable Utilization of Soil Resources in the Commodity Grain Bases in Jilin Province, College of Resources and Environmental Sciences, Jilin Agricultural University, Changchun 130118, China
Shaojie Wang: Key Laboratory of Sustainable Utilization of Soil Resources in the Commodity Grain Bases in Jilin Province, College of Resources and Environmental Sciences, Jilin Agricultural University, Changchun 130118, China
Guozhong Feng: Key Laboratory of Sustainable Utilization of Soil Resources in the Commodity Grain Bases in Jilin Province, College of Resources and Environmental Sciences, Jilin Agricultural University, Changchun 130118, China
Jiayi Lv: Key Laboratory of Sustainable Utilization of Soil Resources in the Commodity Grain Bases in Jilin Province, College of Resources and Environmental Sciences, Jilin Agricultural University, Changchun 130118, China
Xiaoyu Li: Key Laboratory of Sustainable Utilization of Soil Resources in the Commodity Grain Bases in Jilin Province, College of Resources and Environmental Sciences, Jilin Agricultural University, Changchun 130118, China
Qiang Gao: Key Laboratory of Sustainable Utilization of Soil Resources in the Commodity Grain Bases in Jilin Province, College of Resources and Environmental Sciences, Jilin Agricultural University, Changchun 130118, China

Agriculture, 2025, vol. 15, issue 13, 1-17

Abstract: Northeast China is a key grain production region yet achieving coordinated improvements in maize yield and quality across diverse environments remains challenging. This study conducted a meta-analysis to evaluate maize yield and quality responses to chemical fertilizer inputs under varying natural (climate, soil) and anthropogenic (fertilization, planting) conditions. The results indicated that fertilizer application increased yield by 20.0%, and protein, fat, and starch contents by 12.6, 1.4, and 1.2%, respectively, compared to no fertilization. Yield response was highest under precipitation <450 mm and temperatures >7 °C, while protein and fat gains were favored by >600 mm precipitation and 5–7 °C temperatures. Soils with pH <6.5 and saline–alkaline properties supported greater yield gains, while brown and black soils promoted protein and fat accumulation, respectively. Moderate nutrient inputs (N 180–240, P 2 O 5 75–120, K 2 O 90–135 kg ha −1 ) outperformed lower or higher levels in improving both traits, with planting density also affecting response magnitude. Yield gains were primarily driven by soil fertility, whereas quality improvements were influenced by climate and management. Moderate fertilization facilitated the simultaneous enhancement of yield and quality. Tailored nutrient strategies based on soil and climate conditions can support regional maize productivity and contribute to food security.

Keywords: maize yield; fertilization; maize quality; meta-analysis (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2025
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