中国农业科学 ›› 2025, Vol. 58 ›› Issue (23): 4936-4951.doi: 10.3864/j.issn.0578-1752.2025.23.010

• 黄淮地区玉米大豆复合种植丰产增效技术研发 • 上一篇    下一篇

黄淮地区玉米大豆复合种植模式的综合效益评估

杨舒淇1(), 赵影星3, 钱欣2, 张学鹏3, 孟维伟3, 隋鹏1, 李宗新2,*(), 陈源泉1,*()   

  1. 1 中国农业大学农学院,北京 100193
    2 山东省农业科学院/小麦玉米国家工程研究中心,济南 250100
    3 山东省农业科学院作物研究所,济南 250100
  • 收稿日期:2025-04-28 接受日期:2025-08-28 出版日期:2025-12-01 发布日期:2025-12-09
  • 通信作者:
    李宗新,E-mail:
    李宗新,E-mail:
  • 联系方式: 杨舒淇,E-mail:yshuqi@cau.edu.cn。
  • 基金资助:
    国家重点研发计划(2022YFD2300905); 国家重点研发计划(2022YFD2300901); 山东省重点研发计划(2023CXGC010703-03); 山东省玉米产业技术体系(SDAIT-02-07); 山东省自然科学基金(ZR2023QC150)

Comprehensive Evaluation of the Maize-Soybean Intercropping Pattern in the Huang-Huai Region

YANG ShuQi1(), ZHAO YingXing3, QIAN Xin2, ZHANG XuePeng3, MENG WeiWei3, SUI Peng1, LI ZongXin2,*(), CHEN YuanQuan1,*()   

  1. 1 College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193
    2 Shandong Academy of Agricultural Sciences/National Engineering Research Center of Wheat and Maize, Jinan 250100
    3 Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100
  • Received:2025-04-28 Accepted:2025-08-28 Published:2025-12-01 Online:2025-12-09

摘要:

【目的】 针对“十四五”国家重点研发计划“黄淮玉米大豆复合种植丰产增效技术研发与集成示范”布局在山东、河南、安徽、江苏4省的7个技术示范区及其周边种植户,开展产能表现、经济效益和生态效益的系统评价,以期为区域玉米大豆复合种植模式优化提供科学评价依据。【方法】 构建涵盖产量、经济与生态三大维度的综合评价指标体系,基于7个示范区及其周边种植户的试验监测和实地调研,评估各示范区与区域周边种植户玉米大豆复合种植的综合效益差异。【结果】 产量方面,项目区各示范田玉米大豆复合种植模式总体均比周边种植户平均增产10%—19%;经济效益方面,示范区的单位土地产值平均比周边种植户高出5%—21%,但由于投入成本增加了7%—15%,导致单位土地净效益仅高出2%—18%;生态影响方面,示范区的碳足迹比周边种植户高出约9%—34%、氮足迹高出5%—45%,主要原因是化肥和柴油投入增加。基于周边种植户较示范区在产量、经济、生态3个维度的差异表现,7个示范区与周边种植户的综合差异指数等级(CVI)均处于中等差异水平(对应值为3级)。其中,各区域经济趋近指数等级(ECI)表现优异(等级3—4级),尤以土地产出率差异最小(鲁西北、皖北和苏北地区达最优等级5)。这表明,尽管周边种植户产量与土地产值较低,但示范区的高投入降低了其单位产出收益效率,客观上缩小了与周边种植户的净收益差距,支撑了较高的ECI值。限制各区域综合指数提升的主要原因在于产量较低,产量趋近指数(YCI)均集中在较差的1—2级水平。【结论】 项目技术创新与应用对促进黄淮地区玉米大豆复合种植的产量和经济效益具有良好的效果,但也存在成本上升与生态压力增大的问题。如何节本增效是下一步技术创新需要加强的重点攻关方向。

关键词: 黄淮地区, 玉米大豆复合种植, 产量, 经济效益, 生态影响, 实证分析

Abstract:

【Objective】 Based on of “High-Yield and High-Efficiency Maize-Soybean Intercropping Technology R&D and Integrated Demonstration” project of National Key Research and Development Program in the 14th Five-Year Plan seven demonstration sites were established across Shandong, Henan, Anhui, and Jiangsu Provinces. Key technology research and integrated demonstrations were conducted. To comprehensively evaluate the yield performance, economic benefits, and ecological effects of the project demonstration sites, this study conducted a systematic assessment using neighboring farmers as a control, so as to provide a scientific basis for optimizing maize-soybean intercropping in the region. 【Method】 A comprehensive evaluation index system was established, covering three dimensions: yield, economy, and ecology. Through field surveys in seven demonstration sites and their neighboring farms, the differences in overall benefits of maize-soybean intercropping between the demonstration fields and local farmers were assessed. 【Result】 For yield, the intercropping in the demonstration fields was about 10% to 19% higher compared with neighboring farmers. In terms of economic benefits, the net output value per unit area in the demonstration sites was 5% to 21% higher on average. However, input costs increased by 7% to 15%, resulting in a net benefit per unit area only 2% to 18% higher. From an ecological perspective, the carbon footprint of the demonstration areas was approximately 9% to 34% higher than that of surrounding farmers, and the nitrogen footprint was 5% to 45% higher. This was mainly due to the increased use of fertilizers and diesel to ensure high yields. Based on the differences in yield, economic, and ecological dimensions between surrounding farmers and the demonstration areas, the CVI (comprehensive variation index) levels of all seven demonstration areas were at a moderate difference level (corresponding value of level 3). Among them, the ECI (economic convergence index) performed well (levels 3 to 4), especially with the smallest land output rate differences (the North Shandong, North Anhui, and North Jiangsu regions reaching the optimal level 5). This further proved that although surrounding farmers had lower yields and land output, the high inputs in the demonstration areas reduced the unit output efficiency, objectively narrowing the net profit gap with surrounding farmers and supporting the higher ECI value. The main limitation for the improvement of the comprehensive index in all regions was the relatively low yield, as the YCI (yield convergence index) of all regions concentrated at the poor level of 1 to 2. 【Conclusion】 The technological innovation and application of the project had a positive effect on promoting the yield and economic benefits of maize and soybean intercropping in the Huang-Huai region. But its sustainable promotion still faces challenges, such as rising costs and increasing ecological pressure. Finding ways to reduce costs and improve efficiency was therefore a key focus for the next stage of technological innovation.

Key words: Huang-Huai region, maize-soybean intercropping, yield, economic benefits, ecological impacts, empirical analysis