ArticleFrontiers in plant science2026
Optimizing water and nitrogen management in a wheat-maize rotation system: synergistic increases in grain yield, resource use efficiency, and economic and environmental benefits.
Article in Frontiers in plant science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Optimizing water and nitrogen management is crucial for the sustainable development of wheat-maize rotation system. This study systematically examined the impacts of various water and nitrogen management strategies on the wheat-maize rotation system, with the aim of identifying integrated practices that can simultaneously improve yield, resource use efficiency, economic returns, and environmental outcomes. Methods: A field experiment was conducted from 2022 to 2024 in Tai'an, Shandong Province, China. Strategies involved different nitrogen fertilizers (compound fertilizer, urea, and controlled-release fertilizer) and irrigation methods (flood, drip irrigation DI, and micro-sprinkler irrigation SI). Outcomes were assessed based on yield, water and nitrogen use efficiency, economic benefits, and environmental performance, using entropy-weighted TOPSIS comprehensive evaluation. This research aiming to identify an optimized management practice that can simultaneously. enhance both economic and carbon benefits(carbon sequestration/emission ratio). Results and discussion: Drip irrigation with 60% basal controlled-release fertilizer and 40% top-dressed urea (T4) yielded optimal results. Compared to conventional flood irrigation with 50% basal compound fertilizer and 50% top-dressed urea, T4 synergistically increased annual system yield by 1.08-3.99%, improved water use efficiency to 9.42 kg·m
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