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玉米是需肥量大的作物，除了施足底肥，还应注意施好苗肥、拔节肥、穗肥和粒肥。 苗肥的作用，主要是促进发根壮苗。苗肥应早施、轻施和偏施，以氮素化肥为主。在底肥中未搭配速效肥料或者未施用种肥的田块，早施、轻施可弥补速效养分的不足，有促根壮苗的作用。偏施是提小
Corn is a large amount of fertilizer needed crops, in addition to Shi enough base fertilizer, should also pay attention to facilities good seedling fertilizer, jointing fertilizer, panicle fertilizer and grain fertilizer. The role of Miao Fei, mainly to promote hair root seedlings. Miao fertilizer should be early Shi, light Shi and partial Shi, nitrogen-based fertilizer. In the base fertilizer is not with quick-acting fertilizer or not applied seed fertilizer plots, early Shi, light Shi can make up for lack of available nutrients, there is to promote strong seedlings role. Partial bias is to mention small