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大豆属于豆科植物,生物固氮能力强,据统计,一亩大豆一年能固氮9斤左右,相当于46斤硫铵的含氮量,因此可以大量地增加土壤中的氮素,有效地提高土壤肥力,是许多作物的良好前茬. 大豆的经济价值很高,用途很广,营养很丰富,一般含有蛋白质40帕、脂肪20肠,此外还含有人体所必需的八种氨基酸和全量维生素。随着人体营养学的发展,大豆油逐渐取代了动物油,蛋白质逐渐代替了动物蛋白,已成为解决人类蛋白质缺乏的有效途径。
Soybean is a leguminous plant, biological nitrogen fixation ability, according to statistics, an acre of soybean a year about 9 pounds of nitrogen, equivalent to 46 kg of ammonium sulfate nitrogen content, so a lot of nitrogen in the soil can be effectively increased Soil fertility is a good front crop for many crops.Soybean is of high economic value, has a wide range of uses, is very nutritious, and generally contains 40 GP of protein and 20 gut of fat, as well as eight amino acids and total vitamins necessary for the body. With the development of human nutrition, soybean oil has gradually replaced animal oil, and protein gradually replaced animal protein, which has become an effective way to solve the problem of human protein deficiency.