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为了迅速发展我省沿黄灌区的粮食生产,探讨本灌区小麦玉米带田最佳的带宽组合方式,有效的发挥两种作物各自的增产潜力,使带幅配置合理,达到高产增益。我们于1989～1990年进行了小麦玉米带宽组合试验研究。一、材料与方法本试验设于靖远县二滩乡朝阳村,当地海拔1400米,年均气温8.7℃,年降雨量251.4毫米,无霜期200天,土壤为砂壤质潮土,据播地取土测定,耕作层(0～30cm)土壤养分含量有机质为1.113％～1.149％、全氮0.079％～0.089％、P_5O_20.13％～0.15％、水解氮59.0～60.5ppm、带效磷9～19ppm、这效钾145～157ppm、pH值8.4～8.8、全盐0.085％。根据白银沿黄灌区小麦玉米共生期长的特点,同时考虑到各类型区土壤与水肥条件的差异,设计了三个处理:即167厘米带(CK),其中小麦宽
In order to rapidly develop the grain production in the Yellow River Irrigation Area in our province and explore the optimal combination of the bandwidth of the wheat and corn fields in this irrigation area, the potential yield of each of the two crops can be effectively utilized to achieve a reasonable allocation of the breadth and to achieve high yield. In 1989 ~ 1990, we carried out a combination of wheat and corn experimental study. I. Materials and Methods The experiment was located in Chaoyang Village, Ertan Township, Jingyuan County. The local elevation is 1,400 meters and the annual average temperature is 8.7 ℃. The annual rainfall is 251.4 mm and frost-free period is 200 days. The soil is sandy loamy soils, Soil organic matter was 1.113% ~ 1.149%, total nitrogen was 0.079% ~ 0.089%, P_5O_20.13% ~ 0.15%, hydrolyzed nitrogen was 59.0 ~ 60.5ppm and phosphorus was 9 ~ 19ppm, this potassium 145 ~ 157ppm, pH value 8.4 ~ 8.8, whole salt 0.085%. According to the characteristics of wheat and maize symbiosis along the Yellow River Irrigation Area, taking into account the differences of soil and water and fertilizer conditions in the different types of areas, three treatments were designed: 167 cm (CK)