Quantitative design and realization of green technology for increasing the yield and nitrogen use efficiency of winter wheat
The development of green technologies for improving winter wheat yield and nitrogen use efficiency (NUE) is crucial for ensuring national food security and reducing carbon footprint. This study outlines China wheat yield progress and establishes a three-stage theory for this. The key constraints fro...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Higher Education Press
2025-09-01
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| Series: | Frontiers of Agricultural Science and Engineering |
| Subjects: | |
| Online Access: | https://journal.hep.com.cn/fase/EN/PDF/10.15302/J-FASE-2025631 |
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| Summary: | The development of green technologies for improving winter wheat yield and nitrogen use efficiency (NUE) is crucial for ensuring national food security and reducing carbon footprint. This study outlines China wheat yield progress and establishes a three-stage theory for this. The key constraints from a soil-crop system perspective were identified: population-individual competition, dry matter accumulation and distribution, and soil quality degradation. To address these constraints, an optimized soil-crop system is proposed. (1) Adopting rational dense planting using optimal densities of 330–375 plants m−2 for large-spike cultivars and 225–270 plants m−2 for medium-spike cultivars to establish robust populations. (2) Enhancing soil quality and reducing carbon footprint by the adoption of straw return combined with a strategy of deep plowing and rotary tillage to improve soil fertility quality, reducing carbon footprint by 1.87 Mg CO2 eqv ha−1. (3) Using wide-space drill sowing of 6–8 cm sowing belts to minimize interplant competition, coupled with moderate density to stimulate deep-root nitrogen uptake. (4) Optimizing the canopy optimization by delayed sowing (mid-October to early-November) combined with density adjustment enhances light interception efficiency. This integrated soil-crop system management demonstrates long-term effectiveness, increasing grain yield, NUE and reducing carbon footprint. These findings provide practical solutions for green and efficient production of winter wheat. |
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| ISSN: | 2095-7505 |