Straw and hairy vetch incorporation enhances soil fertility and crop yield stability in a 9-year sequence
文献类型： 外文期刊
第一作者： Hou, J. W.
作者： Hou, J. W.;Xing, C. F.;Zhang, T. T.;Liang, J. M.;An, H.;Zhang, J.;Lan, H. Q.;Bai, Z. C.;Duan, Y.;Wu, C. D.;Zhao, N.;Hao, Y. F.;Tao, M. H.;An, J. M.;Fan, B. L.
作者机构：
期刊名称：CROP SCIENCE （ 影响因子：1.9； 五年影响因子：2.3 ）
ISSN： 0011-183X
年卷期： 2025 年 65 卷 4 期
页码：
收录情况： SCI
摘要： Understanding the synergistic effects of different residues on soil fertility and crop yield stability remains limited, particularly in arid irrigation districts. This study investigated the effects of combined straw and Vicia villosa Roth (hairy vetch) incorporation on soil properties and crop productivity in a 9-year wheat (Triticum aestivum L.)-maize (Zea mays L.)-sunflower (Helianthus annuus L.) sequence in the Hetao irrigation district. Four management strategies were compared: residue removal with fertilization (CK), straw incorporation with fertilization (S), hairy vetch incorporation with fertilization (V), and combined straw and hairy vetch incorporation with fertilization (SV). After two sequence cycles, S, V, and SV treatments significantly enhanced soil organic matter, available nitrogen, phosphorus, potassium, and the integrated fertility index (IFI) compared to CK. Temporal yield stability was assessed as coefficient of variation (CV). Temporal yield stability varied among crops, with CV ranges of 2.35%-3.87% for wheat, 3.26%-10.02% for maize, and 3.99%-26.19% for sunflower. The SV treatment provided optimal yield stability across all crops in each rotation cycle and significantly increased maize yield (p < 0.05). Variance decomposition analysis identified crop-specific yield drivers: available potassium primarily influenced wheat yield, hairy vetch return amount drove maize yield, while weather variables (temperature and precipitation) predominantly affected sunflower yield. For the overall sequence system, combined straw and hairy vetch return amount, IFI, and available nitrogen were key determinants. Our findings demonstrate that both combined straw and hairy vetch incorporation improves soil fertility and achieves optimal yield stability, representing the most sustainable management strategy for this system.
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