湿度对变色秋海棠植株生长的调节作用

以变色秋海棠为材料,观测在不同空气湿度条件下栽培对植株生长的影响。结果表明:在平均湿度 75%的栽培环境,变色秋海棠的根系不太发达,茎的伸长生长明显,叶片大、质薄色浅、毛被较疏,叶柄长,以至 株高、冠幅增加;而在相对湿度60%以下略为胁迫的条件下,变色秋海棠的营养生长与上述指标对应相反。 由于相对湿度在变色秋海棠生长过程中的调节作用,导致变色秋海棠植株开展型和紧凑型两种观赏效果,可 根据需求,因地制宜采取不同的湿度调控进行栽培管理。

Regulatory effects of humidity on plant growth phase in Begonia versicolor

This paper dealt with effects of humidity on plant growth of Begonia versicolor Irmsch. The results showed that plants were possessed of undeveloped root system,long internode and large leaf,withthin texture,light color and puberulent and long petiole under the cultural environment of 75% relative humidity. But they had developed root system,short internode and small leaf,with thick texture,deep color and short petiole when relative humidity was below 60%. Plants of B.versicolor had two types(spreading and compact type)in the different humidity to. Therefore,adopting different cultivated measures through regulating humidity is able to receive different ornamental plants.