ArticleFrontiers in plant science2026
Optimizing nitrogen reduction for improved grain yield and nitrogen-use-efficiency in two rice genotypes grown in hilly regions of Sichuan.
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: The hilly region of Sichuan is a core rice-producing area in Southwest China.Long-term excessive fertilization has resulted in low nitrogen-use-efficiency and aggravated agricultural non-point source pollution, which seriously restricts the green and high-yield development of rice production. Methods: To determine the optimal nitrogen reduction rate for nitrogen-efficient rice varieties in this region and to reveal the regulatory effects of nitrogen reduction on rice yield, nitrogen utilization, and physiological metabolism, a two-year field experiment was conducted using two rice cultivars, Byou 3611 and Yixiangyou 2115. Four nitrogen treatments were applied: 180 kg·hm Results: The results showed that 150 kg·hm Discussion: This study indicates that Byou 3611 is superior to Yixiangyou 2115 in terms of grain yield and nitrogen-use-efficiency. The application rate of 150 kg·hm
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