北方一年种植四茬栽培技术大白菜制种—玉米—秋大白菜—菠菜随着两高一优农业的发展，传统的一种一粮种植方式已不适应农业发展的需要。山东省大白菜良种服务中心微山办事处经过３年的试验示范，摸索出了一套与大白菜制种相配套的立体高效种植模式。此模式既保证了大白菜... North Fourth Year Planting Cultivation Technique Cabbage - Corn - Autumn Chinese Cabbage - Spinach With the development of Lianggaoyiyou agriculture, the traditional one kind of grain growing method has not adapted to the needs of agricultural development. After three years of experiment and demonstration, Shandong Province, cabbage variety service center Weishan Office worked out a set of three-dimensional and efficient planting mode matching Chinese cabbage seed production. This mode not only guarantees the cabbage ...