成花素达到一定水平，产量就会提高，因为它指令植物停止长叶，开始孕育结出果实的花。

With the right levels of florigen yields increase because it instructs plants when to stop making leaves and start making flowers, which in turn produce fruit.

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目前根治性切除率仍较低，肝方叶切除对最后选定手术方式有一定帮助。

Radical resection rate is still low nowadays. lobus quadratus resection is helpful to select the operation.

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以烤烟品种NC89、K326、RG11的上部叶为材料，对变黄期至定色期烟叶厚度及解剖结构的变化进行了切片观察。

The upper leaves of flue_cured tobacco CV. NC89, K326, RG11 were sliced, and their changes of thickness and dissecting structure were observed from the stages of yellowing to color fixing.

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