在小麦收获以后播种的大豆称之为夏大豆。夏大豆主要分布在华北平原,与北方冬麦区重合。夏大豆是一年两熟制地区的主要麦后复种作物。因此,种好夏大豆对于夺取麦豆双丰收具有重要意义。夏大 Soybeans planted after the wheat is harvested are called summer soybeans. Summer soybean are mainly distributed in the North China Plain, coinciding with the northern winter wheat area. Summer soybean is the main wheat-wheat multiple crop in the two-cropping system of the year. Therefore, planting good summer soybean for the harvest of wheat double harvest is of great significance. Summer big