在浙东沿海丘陵地区春粮——春大豆——杂交夏玉米套种是旱地三熟制的主要布局方式之一,在宁海县常年种植一万亩左右。随着生产责任制的落实,春大豆的套种从春粮地发展到甘蔗地幼龄桔(茶)地以及棉花地。长期以来对套种的舂大豆品种和栽培技术研究较少、仍然沿用过去的老品种和老办法,产量一直徘徊在150斤左右。因此,选择优良的春大豆品 Spring wheat-spring soybean-intercalary summer maize intercropping in the hilly region of eastern Zhejiang is one of the main layout modes of dry land three-cropping system. About 10,000 mu of perennial is planted in Ninghai County. With the implementation of the production responsibility system, the intercropping of spring soybeans progressed from spring grain to jujube orange (tea) land and cotton land in sugarcane fields. For a long time, there have been few researches on the intercropping soybean varieties and cultivation techniques, and still use the old varieties and old methods in the past. The output has been hovering around 150 kg. Therefore, choose a good spring soy products