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一、氮肥施用技术近几年来氮肥的增产效益下降,主要有以下三个方面的原因.(一)盲目增加用量,造成浪费和减产.这种现象各地都存在,在高产地区和高产单位更突出.
I. APPLICATION TECHNOLOGIES OF NITROGEN APPLICATION In recent years, the yield-increasing benefits of nitrogen fertilizers have declined mainly due to the following three reasons: (1) Blindly increasing the amount of waste, resulting in waste and production cuts. This phenomenon exists everywhere and is more prominent in high-yielding areas and high-yielding units .