The variation is observed in characters of plant height and basal diameter increasing amount in one year.

年终观测一年生苗的高和地径生长量，考察各品种的变异。

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The variation is observed in characters of plant height and basal diameter increasing amount in one year.

年终观测一年生苗的高和地径生长量，考察各品种的变异。

youdao