【摘要】 [目的]探讨延长光照时间对黄瓜幼苗生长的影响。[方法]以黄瓜品种戴多星为试验材料,在幼苗2叶1心时以自然光为对照,利用植物生长灯对黄瓜幼苗进行补光,观察黄瓜幼苗株高、茎粗的生长情况。[结果]与对照相比,补光条件下黄瓜幼苗株高均显著高于对照,但基径并无显著差异,叶片数相同。延长光照时间对黄瓜幼苗生长有一定促进作用。[结论]延长光照时间可以促进黄瓜幼苗生长。更多还原

【Abstract】 [Objective] The aim was to study the effects of prolonging light duration on the growth of cucumber seedlings.[Method] The experiment took the cucumber variety Delstar as the experimental material.When the seedlings were two leaves and one mind,the experiment took natural light as the control,used the plant growth lamp to supplement light and observed the growth of plant height and basal stem of cucumber seedlings.[Result] The results showed that compared with the control,under the condition of prolonging the light duration,the height of cucumber seedling was significantly higher.But there was no significant difference of basal stem between them.The number of leaves was the same.To certain extent prolonging light duration could promote the growth of cucumber seedlings.[Conclusion] It could promote the growth of cucumber seedlings by extending the exposure time.更多还原