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黑龙江省是国家大豆的重要出口基地,“三垄”栽培模式是近年来推广的大豆高产新技术。1988～1991年累计在我省推广2147.3万亩,平均亩产115.2公斤,累计增产大豆47.1万吨,纯增效益4.09亿元,亩
Heilongjiang Province is an important export base of national soybean. The cultivation pattern of “Three Ridges” is a new soybean high-yielding technology popularized in recent years. From 1988 to 1991, a total of 21.473 million mu of land was popularized in our province with an average yield of 115.2 kilograms and a total increase of 471,000 tons of soybean, with a net profit of 409 million yuan