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大豆同禾谷类作物相比,生产同等数量的籽实产量及相应的营养体,需要的氮素通常高2—3倍以上。但是,大豆施用氮肥的效果远不如禾谷类作物高,尤其在高产栽培下表现的更为突出。很多试验证明,施用氮肥往往抑制根瘤的着生与发育。然
Soybeans produce the same amount of seed yield and corresponding nutrients compared to cereal crops, requiring nitrogen levels three to three times more often. However, the effect of applying nitrogenous fertilizer to soybean is far less than that of cereal crops, especially under high-yielding cultivation. Many experiments show that the application of nitrogen fertilizer often inhibit the growth and development of nodules. Of course