Field Crop 2025, Vol.8, No.6, 258-264 http://cropscipublisher.com/index.php/fc 258 Meta Analysis Open Access Analysis of the Impact of Partially Replacing Chemical Fertilizer with Organic Fertilizer on Soybean Yield Yuping Huang, Weiliang Shen, Jingyi Zhang Tropical Legume Research Center, Hainan Institute of Tropical Agricultural Resources, Sanya, 572025, Hainan, China Corresponding email: jingyi.zhang@hitar.org Field Crop, 2025, Vol.8, No.6 doi: 10.5376/fc.2025.08.0026 Received: 03 Sep., 2025 Accepted: 12 Oct., 2025 Published: 02 Nov., 2025 Copyright © 2025 Huang et al., This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Preferred citation for this article: Huang Y.P., Shen W.L., and Zhang J.Y., 2025, Analysis of the impact of partially replacing chemical fertilizer with organic fertilizer on soybean yield, Field Crop, 8(6): 258-264 (doi: 10.5376/fc.2025.08.0026) Abstract With the deepening of the concept of sustainable agricultural development, the reduction of chemical fertilizers and organic substitution have become important ways to improve crop yield and quality and protect the soil ecological environment. This study focuses on the fertilization mode of replacing part of the chemical fertilizer with organic fertilizer, systematically explores its effects on soybean yield, growth indicators and quality factors, and evaluates its feasibility and advantages. The results show that a moderate proportion of organic fertilizer substitution not only helps to improve the root vitality and biological yield of soybeans, but also improves the physical and chemical properties of the soil to a certain extent, and promotes nutrient absorption and utilization efficiency. Compared with the full chemical fertilizer treatment, the 50% substitution ratio performs better in multiple indicators, reflecting good yield stability and ecological benefits. This study systematically analyzes the yield performance and soil improvement effects under different substitution ratios, providing a theoretical basis and practical path for green and efficient planting models, so as to promote the ecological and sustainable development of soybean production. Keywords Organic fertilizer; Chemical fertilizer substitution; Soybean yield; Nutrient utilization; Sustainable agriculture 1 Introduction There are many problems with fertilization in soybean cultivation. Farmers generally rely on chemical fertilizers, which makes people worry that the nutrients in the soil will be used up, the soil quality will deteriorate, and there may be environmental problems such as nutrient loss and increased greenhouse gases (Wu et al., 2024). If too much chemical fertilizer is used, the soil will become less and less fertile over time, making it difficult to continue planting (Kuntyastuti et al., 2020; Sandrakirana and Arifin, 2021). Recently, many studies have begun to focus on whether some organic fertilizers (such as manure or compost) can be used to replace part of the chemical fertilizers. In actual planting, some people have tried to use organic fertilizers and chemical fertilizers together and found that this can improve soil quality, increase good bacteria in the soil, and increase the activity of some useful enzymes. These changes help make nutrient circulation smoother and plants healthier (Peng et al., 2023). Although some experimental results show that soybean yield and soil fertility have indeed increased, some studies have shown that this improvement is not obvious in every case. Therefore, the fertilization method must be determined according to the local conditions (Lin et al., 2022; Zhao et al., 2024). However, replacing chemical fertilizers with some organic fertilizers can indeed reduce the impact on the environment and may also help farmers save a lot of costs. This study will analyze the effect of partial replacement of chemical fertilizers with organic fertilizers on soybean yield, focusing on soil quality, microbial activity and crop productivity, review the challenges and opportunities of fertilizer management in soybean cultivation, summarize the latest research results on the combined effects of organic fertilizers and chemical fertilizers, evaluate the potential mechanism of organic fertilizers replacing chemical fertilizers on soybean yield and soil improvement, and finally propose an optimized fertilization strategy to achieve sustainable soybean production.
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