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近年来,随夏玉米产量的提高,氮肥的用量虽应有所增加,但有些农民竟亩施碳铵高达100～150公斤,结果既浪费了肥料,加大了投资,产量又上不去。为了探索夏玉米既能高产,又能节约氮肥的施用量,我们进行了两年的试验,初步得出了夏玉米高产的氮肥最适用量。
In recent years, with the increase of summer maize yield, although the amount of nitrogen fertilizer should be increased, some farmers actually use up to 100-150 kg of ammonium bicarbonate, resulting in waste of fertilizer, increasing investment and increasing output. In order to explore the summer maize both high yield, but also to save the application of nitrogen fertilizer, we conducted two years of trials, preliminary concluded that the most suitable summer maize nitrogen fertilizer.