<正>采用裂区设计研究遮光程度和栽培密度对石蒜地上部分生长状况及切花品质的影响。结果表明:(1)遮光程度对石蒜营养生长的影响不显著,因石蒜可通过提高叶绿素b的含量来适应弱光条件,但遮光程度对石蒜生殖生长和切花品质的影响显著,以60%遮光处理有利于提高切花品质,尤其是花茎长度;(2)栽培密度对石蒜营养生长的影响不显著,对切花品质的影响较大,以15cm×10cm切花数量最大,15cm×20cm切花品质最好。

In order to study the requirements of plant process of Lycoris radiata on the shading level and the planting density,an experiment of the shading level and the planting density of three different levels were arranged to study effects of the shading and the planting density on growth and quality of cut flowers of Lycoris radiata,based on a split-plot design.The results were as follows:(1)Different shading level had no significant effect on the growth of Lycoris radiata,but had a significant effect on the quality of cut flowers of Lycoris radiata.The treatment of 60% shading appeared the best quality due to these flowers having longer stalks.In contrast,the quality of cut flowers,especially the quantity of cut flowers per area was low when the plants were grown at heavy shades.(2)Planting density had no significant effect on the growth of Lycoris radiata.Planting density affected the quantity and quality of cut flower of Lycoris radiata.When the density was too high,the quantity per area could be improved,but the quality was low because of limited growing place.On the contrary,when the density was low,quality became higher but quantity decreased.The test showed 15 cm×20 cm was the best planting density.