（）Is the period when corn needs the most amount of fertilizers and the intensity of fertilizers is t

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（）Is the period when corn needs the most amount of fertilizers and the intensity of fertilizers is the greatest in this life.During this period， top dressing must be strengthened to prevent the phenomenon of defertilization.

A.V6

B.V12

C.V3

D.VT

参考答案:

答案：V12

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（）Is the period when corn needs the most amount of fertilizers and the intensity of fertilizers is t

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（）Is the period when corn needs the most amount of fertilizers and the intensity of fertilizers is t

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