春小麦是坝上的主要粮食作物,近年播种面积在130万亩左右。由于地势高寒,气候干燥,水源缺乏(年降水量350毫米上下),春季多风蒸发量大,再加十年春旱加伏旱,从而导致了春小麦产量低而不稳。为提高旱地春小麦单位面积产量,我们综合以往多年的研究成果和生产实践经验,探索出一条改适期早播为适期晚播,搞好田间配套栽培技术,实现旱作春小麦增产增收的新途径。经连续4年示范,一般亩产170公斤左右,而当地一 Spring wheat is the main food crop on the dam. In recent years, the sown area has been about 1.3 million mu. Due to the high altitude, dry climate, lack of water (annual rainfall of 350 mm up and down), the spring windy evaporation, plus ten years of spring drought and drought, resulting in low and unstable spring wheat yield. In order to improve the yield per unit area of ​​spring wheat in dry land, based on our many years of research and practical experience in production, we have explored a new way of adapting early sowing to suitable late sowing, suitable cultivating techniques in the field and increasing yield and income of dryland spring wheat . After four consecutive years of demonstration, generally about 170 kilograms per mu, while the local one