（乡村行·看振兴）山西长治潞城区：机械农技双驱动 晚播小麦破困局

Core Viewpoint - Shanxi Changzhi Lucheng District is addressing the challenges of delayed wheat sowing due to over 20 days of continuous rain by enhancing sowing efficiency with high-performance agricultural machinery and providing technical guidance through agricultural experts [1][3]. Group 1: Agricultural Machinery and Efficiency - The district utilizes an 18-row multifunctional sowing machine that integrates fertilization, tilling, sowing, and compaction, significantly improving efficiency by completing over 50 acres of work per day with a sowing depth error of less than 1 cm and a row spacing uniformity of over 95% [3]. - Traditional sowing methods required three machines and took more than twice the time, leading to soil compaction issues, while the new integrated machine provides a reliable hardware foundation for uniform wheat growth [3]. Group 2: Technical Support and Strategies - Agricultural experts have been providing one-on-one technical services to farmers since late October, helping to mitigate the impact of delayed sowing by ensuring optimal soil moisture levels of 75% to 80% [3]. - A "Three Supplements and One Promotion" strategy has been proposed to address the shortened growth cycle of late-sown wheat, including selecting winter wheat varieties with a growth period of less than 220 days, increasing fertilizer application, and adjusting sowing density [3][4]. Group 3: Crop Rotation and Sustainability - The district has been promoting land transfer to facilitate large-scale and intensive planting, exploring efficient planting models such as the "fruit corn + winter wheat" rotation, which has shown significant results [4]. - This rotation model allows for nutrient complementarity, reducing chemical fertilizer usage by approximately 15% and decreasing the incidence of soil-borne diseases by over 20%, while achieving a land utilization rate of 100% and increasing comprehensive income by over 1,800 yuan per acre compared to single crop planting [5].