Establishing appropriate field layouts is crucial for boosting production and efficiency in intercropping systems, as it can help address the various contradictions that may arise within and between crops. Field configuration encompasses the combination, spatial distribution, and interdependence of co-existing crop populations in the agroecosystem, including vertical and horizontal structures, such as various combinations of plant population density, row ratio (number of rows), row spacing, width, interval, belt width, and orientation. In traditional intercropping, numerous challenges exist, such as unsuitable crop combinations, improper variety selection, unsuitable spacing, strip width, or row ratio configuration. These issues lead to considerable differences in high-density intercropping and monoculture, resulting in low resource utilization, low population yield, poor mechanization, low production efficiency, and the inability to rotate crops. Modern intercropping techniques inherit and innovate upon traditional methods to achieve “high yield, mechanization, and sustainability.” Based on the “high position priority, high-low synergy” theory for efficient use of solar energy, strip intercropping offers a viable solution. Innovations in technologies of maize–soybean strip intercropping, such as “selection, expansion, and contraction,” have been developed to select and match varieties, expand inter-row light interception, and contract plant spacing to maintain privacy. The application of core technology has enabled the successful maintenance of maize yields and the addition of one-season soybean crop, while ensuring adequate mechanization and the integration of intercropping into the rotation.