| 摘要 |
To identify the optimal maize-soybean relay strip intercropping pattern for the northern margin of the Jianghan Plain, a field experiment was conducted in 2025 at the experimental base of Huangji Town, Xiangzhou District, Xiangyang City, Hubei Province. Maize variety Zhengdan 958 and soybean variety Zhongdou 46 were used as test materials. Seven relay strip intercropping patterns with different bandwidths and row ratios were designed, with sole maize as the control (CK), and the effects of different configurations on crop growth period, agronomic traits, yield, and economic benefits were systematically analyzed. The results showed that different bandwidth configurations had no significant effect on the maize growth period, but significantly influenced the system equivalent yield and comprehensive economic benefits. Sole maize (treatment 1, CK) gave the highest equivalent yield of 7 725 kg/hm2. Among the relay strip intercropping patterns, treatment 7 (M-S7, bandwidth of 2.8 m, maize-to-soybean row ratio of 2∶4, maize density 35 700 plants/hm2, soybean density 285 720 plants/hm2) showed the best overall performance, achieving an equivalent yield of 7 200 kg/hm2 and a total system economic benefit of 20 661 yuan/hm2, with the economic benefit being significantly higher than that of sole maize and the other relay strip intercropping treatments. In conclusion, the treatment 7 (M-S7) pattern balances stable maize yield with increased soybean yield, demonstrates outstanding comprehensive production benefits, and is suitable for extension and application in Xiangyang City and similar ecological zones of the Jianghan Plain. |
