At the same time the differentiation process of the root primordium, and the effect of hilling up with earth on the process have been carefully followed.

一年生插条苗的根原基形成时间、部位和分化的过程，以及培土措施对根原基分化的影响。

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At the same time the differentiation process of the root primordium, and the effect of hilling up with earth on the process have been carefully followed.

一年生插条苗的根原基形成时间、部位和分化的过程，以及培土措施对根原基分化的影响。

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