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玉米对氮肥的吸收数量,在不同的生长发育阶段是不相同的。只有适时、适量地施肥,不断满足植株对肥料的要求,才能有效地提高玉米产量和施肥经济效益。经研究确定,河西灌区春玉米整个生育期施氮可遵循以下原则:种肥15％,拔节肥30％,大喇叭口肥55％,或种肥15％,拔节肥30％,大喇叭口肥40％,吐丝肥15％。
The amount of nitrogen absorbed by maize is not the same at different stages of growth and development. Only timely and appropriate fertilization, and constantly meet the plant’s fertilizer requirements, in order to effectively improve the yield and fertilization of corn economic benefits. The study determined that spring maize in Hexi Irrigation throughout the growing period of nitrogen can follow the following principles: 15% seed fertilizer, jointing fertilizer 30%, big bell mouth fertilizer 55%, or 15% fertilizer, jointing fertilizer 30% 40%, spit silk fertilizer 15%.