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玉米是需肥较多的作物,一生中吸收的养分,以氮为最多,钾次之,磷较少。亩产千斤玉米籽粒,吸氮(N)25.6斤、磷(P_2O_5)10.5斤、钾(K_2O)21.4斤。玉米不同生育时期,其吸收氮、磷、钾的速度和数量是不同的。一般来说,幼苗期生长慢,植株小,吸收的养分少。拔节到开花期生长很快,此时正值雌雄穗形成和发育时期,吸收养分速度快,数量多,
Maize is a fertilizer that requires more fertilizer and absorbs nutrients during its lifetime. Nitrogen is the most abundant, followed by potassium and less phosphorus. Kernel weight per kilogram of corn, nitrogen (N) 25.6 kg, phosphorus (P_2O_5) 10.5 kg, potassium (K_2O) 21.4 kg. Corn at different growth stages, its absorption of nitrogen, phosphorus and potassium are different in speed and quantity. In general, seedling growth slow, small plants, absorb less nutrients. Jointing to the rapid growth of flowering, this time coincided with the formation and development of male and female spikes, fast absorption of nutrients, the number of large,