This is an ideal spindle tree system.

这是一种理想的纺锤形植株方式。

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Compared net photosynthetic rate in different tree frame, the open was higher than the spindle; the spindle was higher than the control.

不同树形叶片净光合速率比较，开心形高于纺锤形，纺锤形高于对照。

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Compared net photosynthetic rate in different tree frame, the open was higher than the spindle; the spindle was higher than the control.

不同树形叶片净光合速率比较，开心形高于纺锤形，纺锤形高于对照。

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