Combining green manuring with ridge-mulching improves the yield and water use efficiency of winter wheat in drylands
文献类型: 外文期刊
作者: Qi Zhu;Chi Zhang;Jiao Chen;Huishuai Lv;Zhaohui Wang;Donglin Huang;Xiaomin Wei;Weidong Cao;Yajun Gao;Dabin Zhang
作者机构:
关键词: Cover crop;Loess Plateau;Plastic mulching;Wheat;WUE;Yield
期刊名称: European Journal of Agronomy
ISSN: 1161-0301
年卷期: 2025 年 169 卷
页码:
收录情况: SCIE(2025版)
摘要: Integrating green manure (GM) crops into the conventional winter wheat (Triticum aestivum L.) rotation system enhanced resource use efficiency but diminished soil water storage (SWS) and yield production throughout the fallow period (∼3 mo) within semiarid parts of the Loess Plateau. Balancing crop yield and soil water utilization in dryland GM systems, a four-year field trial was conducted to evaluate the influence of cultivating various GM varieties in combination with ridge-plastic mulching and furrow-sowing (RMFS) practices on wheat yield, SWS, and water use efficiency (WUE) in Yongshou county, Shaanxi Province. The research involved five treatments: (i) summer fallow (CK), (ii) black bean (BB), (iii) black bean with RMFS (BBM), (iv) rapeseed (RS), and (v) rapeseed with RMFS (RSM). Results showed that combining the GMs with RMFS practice had obvious effects on enhancing soil water availability and maintaining or even enhancing WUE and yield of wheat. With application of RMFS, the wheat yield and WUE in both BB and RS were enhanced by 8.9 % and 9.0 %, respectively (on average; p < 0.05). The wheat yield increased by 21.5 kg ha−1 and 23.0 kg ha−1 for every 1 mm increased in the SWS under GM and GM + RMFS systems, respectively. The key safety thresholds of SWS consumption in 0–200 cm layer and maximum dry biomass of GM crops were estimated at 9.1 mm and 625.6 kg ha−1 in GM + RMFS system, respectively. The highest SWS of 178.3 mm (0–100 cm) was observed in RSM, aligning with the greatest wheat yield and WUE over the 4-yrs. Consequently, RSM is an appropriate approach for developing innovative water-conserving summer GM-winter wheat rotation systems, laying a theoretical foundation for water conservation and yield enhancement in the Loess Plateau and arid regions globally.
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