自６０年代以来，黑龙江省垦区大豆种植方式几经变革，不断发展。６０－７０年代，垦区是以平播后起垄为主的种植方式。８０年代中期开始试验与推广垄作深松、分层深施肥和垄上双条精量点播栽培技术（简称“三垄”法），使垦区大豆由单条平播普遍改为垄作技术。至９０年代... Since the 1960s, the cultivation of soybean in Heilongjiang reclamation area has undergone several changes and continues to develop. During the 1960s and 1970s, the reclamation area was planted with ridging after planting. In the mid-1980s, trials and promotion of deep-plowing furrows, deep stratified fertilization and double-precision on-ridge cultivation techniques (referred to as the “Three Ridges” method) were conducted in the mid-1980s. To the 90’s ...