Integrated Strategies for the Improvement of Cultivated Soil Barriers in China: Development and Application of Multifunctional Organic Fertilizers from an Agro-Environmental Perspective

Abstract

With the continuous improvement of agricultural intensification and high-intensity utilization in my country, cultivated land soil is facing the combined stress of multiple barrier factors, which seriously threatens food security and ecological environment quality. Multifunctional organic fertilizer is gradually becoming an important technical path for the restoration of cultivated land barrier soil due to its resource recycling, eco-friendly and multi-dimensional improvement characteristics. Based on the perspective of agricultural resources and environmental science, this paper systematically sorted out the types and causes of major cultivated land soil barrier factors in my country, and focused on analyzing the research and development mechanism, key technical routes of multifunctional organic fertilizer and its application effect in acidified, salinized, compacted, impoverished and polluted soils. Studies have shown that multifunctional organic fertilizer can significantly improve soil physical and chemical properties, enhance biological activity, and improve cultivated land productivity and ecological functions through technical means such as organic-inorganic composite, functional microbial enhancement, slow-release regulation and pollutant passivation. This paper also discusses the regional adaptation model and environmental benefit evaluation system for its promotion and application, and proposes the optimization path for future research and development and application. The research results provide a theoretical basis and technical support for promoting the improvement of cultivated land quality and the green development of agriculture.