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大豆窄行密植高产栽培技术的引进与嫁接Ⅲ垄作窄行密植高产栽培技术的增产效果刘忠堂何志鸿魏冀西王国春（黑龙江省农科院）（黑龙江省科委）（黑龙江省农技推广总站１９９３年黑龙江省农科院合江农科所引进美国大豆专家Ｒ．Ｌ．ｃｅｅｏｐｔｒ教授大豆窄行密植栽培技术...
Soybean Narrow Row High Density Planting Cultivation Technique Introduction and Grafting 垄 窄 Narrow Row Close Planting High Yield Cultivation Technique Liu Zhongtang He Zhihong Wei Ji Xi Wang Guochun (Heilongjiang Academy of Agricultural Sciences) (Heilongjiang Provincial Science and Technology Commission) (Heilongjiang Provincial Agricultural Technology Extension Station 1993 Heilongjiang Academy of Agricultural Sciences Hejiang Agricultural Sciences introduced by the United States soybean expert R. L. Ceeoptr Professor Soybean narrow row close planting cultivation techniques ...