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玉米和大豆是呼兰区的主栽作物,2种作物常年播种面积在160万亩左右,占总耕地面积的70%以上。为了充分利用土地资源,增加单位面积的产量
Corn and soybean are the main crops in Hulan. The perennial planting area of the two crops is about 1.6 million mu, accounting for more than 70% of the total cultivated land. In order to make full use of land resources, increase the yield per unit area