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黑龙江省孙吴县地处北纬48°～50°,从开荒建点到1989年一直没有种过甜菜。近几年,这个县为了开发新的多种经营门路,合理调整种植业内部结构,大量引种了甜菜,种植面积和单产4年迈了三大步:1989年种植5000亩,平均亩产1.03t;1990年种植1万亩,平均亩产1.10t;1991年种植3万亩,平均亩产1.30t;1992年种植3.5万亩,平均亩产上升到1.35t。4年中,面积翻了两番,单产提高了31.07％。由于气候适宜,土质
Sunwu County, Heilongjiang Province is located at 48 ° ~ 50 ° north latitude, and has never been planted with sugar beet from its establishment in 1989. In recent years, in order to develop new diversified business routes and adjust the internal structure of the planting industry reasonably, the county has introduced three large steps in four years: growing sugarbeet, planting acreage and yielding four years in 1989: planting 5000 mu in 1989 with an average yield of 1.03 tons; In 1990, 10,000 mu of land was planted, with an average mu yield of 1.10 tons. In 1991, 30,000 mu of mu was planted with an average mu yield of 1.30 tons. In 1992, an area of 35,000 mu was planted and the average mu yield rose to 1.35 tons. In four years, the area doubled and the yield increased by 31.07%. Due to the climate, soil quality