Research on the Optimal Water and Fertilizer Scheme for Maize in a Typical Hydrological Year Based on the DSSAT Model DOI Creative Commons

Jianqin Ma,

Yongqing Wang,

Lei Liu

et al.

Agronomy, Journal Year: 2025, Volume and Issue: 15(5), P. 1085 - 1085

Published: April 29, 2025

Maize is vital for global and Chinese food security. Yet, in Henan Province, a key maize-growing region China, water scarcity, uneven rainfall, inefficient irrigation fertilization limit its yield quality. This study combines two-year field experiment (2023–2024) with the DSSAT model to optimize typical hydrological years (wet, normal, dry). After calibration validation data, showed strong performance. Results indicate that optimal timing volume vary years: no needed wet years, one 30 mm at tasseling (VT) stage normal three irrigations (total 90 mm) emergence (VE), jointing (VT), grain filling (R2) stages dry years. The nitrogen fertilizer 240 kg·ha−1 water-rich 180 These optimized schemes can achieve 98–100% of maximum potential maize yields across offering practical insights enhancing agricultural nutrient management central support sustainable development reduce environmental impacts.

Language: Английский

Research on the Optimal Water and Fertilizer Scheme for Maize in a Typical Hydrological Year Based on the DSSAT Model DOI Creative Commons

Jianqin Ma,

Yongqing Wang,

Lei Liu

et al.

Agronomy, Journal Year: 2025, Volume and Issue: 15(5), P. 1085 - 1085

Published: April 29, 2025

Maize is vital for global and Chinese food security. Yet, in Henan Province, a key maize-growing region China, water scarcity, uneven rainfall, inefficient irrigation fertilization limit its yield quality. This study combines two-year field experiment (2023–2024) with the DSSAT model to optimize typical hydrological years (wet, normal, dry). After calibration validation data, showed strong performance. Results indicate that optimal timing volume vary years: no needed wet years, one 30 mm at tasseling (VT) stage normal three irrigations (total 90 mm) emergence (VE), jointing (VT), grain filling (R2) stages dry years. The nitrogen fertilizer 240 kg·ha−1 water-rich 180 These optimized schemes can achieve 98–100% of maximum potential maize yields across offering practical insights enhancing agricultural nutrient management central support sustainable development reduce environmental impacts.

Language: Английский

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