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植物学上将植株地下部分宿存越冬、次年仍能萌蘖开花并延续多年的开花植物,称为宿根花卉。在我国长江流域以北,由于冬季严寒致使土壤结冻,越冬时不同的宿根花卉会有不同反应。根据对于环境温度的要求,宿根花卉可分为三类:(1)耐寒宿根花卉;(2)喜温宿根花卉;(3)不耐寒宿根花卉。本文首先介绍耐寒宿根花卉类:它的基本特点是植株宿存于士中的部位可以在冰冻的土壤层中越冬。
Botany will plant the underground part of the survival of the winter, the following year still sprout flowering and prolonged flowering plants, known as the perennial flowers. To the north of the Yangtze River in China, the soil is frozen due to the cold in winter, and different perennial flowers have different responses when overwintering. According to the requirements of the ambient temperature, perennial flowers can be divided into three categories: (1) tolerant perennial flowers; (2) hi temperature perennial flowers; (3) not tolerant perennial flowers. This article first introduces the tolerant perennial flowers and plants: Its basic feature is that plants can survive in winter in frozen soil layers.