每户种植1棵大乔木，6棵小乔木；庭院地面由混凝土砌块、木质平台、草地组合铺装而成。

Each family plants 1 big arbor, 6 small arbors; the yard ground is constructed by concrete brick, wooden platform, and meadow combination.

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通过分析平面绿量效率这一指标，客观地说明了一些具有高叶面积指数、冠幅较大速生落叶大乔木应是遮荫树主体。

By analyzing the efficiency of LVV_H, it objectively illustrated that the tree with lager crown and higher LAI was the preference for shading.

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泡桐属一种中国产的泡桐属落叶乔木，具有心形的大对生叶片，淡紫色或白色锥状花冠，内部具有花斑。

Any of several Chinese deciduous trees of the genus paulownia having large heart-shaped opposite leaves and pyramidal panicles of purplish or white flowers with a spotted interior.

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