融雪剂对园林植物种子萌发的影响

Effects of Snow Melting Agents on Landscape Plant Seed Germination

使用融雪剂是高纬度城市冬季除雪的主要措施之一,但融雪剂中含有的盐类物质可以对园林植物造成伤害。在此研究了融雪剂对刺槐(Robinia pseudoacacia)、万寿菊(Tagetes erecta)、矮紫薇(Lagerstroemia indica 'Petite pinkie')、草地早熟禾(Poa pratensis)、侧柏(Platycladus orientalis)种子发芽率和相对受害率的影响。试验结果表明:5种植物种子的发芽率随融雪剂浓度的升高而降低,相对受害率则随融雪剂浓度升高而增大。其中草地早熟禾种子对融雪剂最敏感,可以用草地早熟禾种子萌发为指示,间接检验融雪剂对植物的伤害程度。

Using snow melting agent is one of the primary measures to remove the snow in the high latitude region. But the salts in the snow melting agent can damage the landscape plants. In this study, the seed germination rate and the relative damage degree of the landscape plants, such as Robinia pseudoacacia, Tagetes erecta, Lagerstroemia indica ＇Petite pinkie＇, Poa pratensis, Platycladus orientalis ,were investigated when they were dipped into low concentration snow melting agent and the purpose was to test the sensitivity of plant seed on snow melting agent. The results indicated that the germination rates of 5 kinds of plant seeds declined with the increasing of snow melting agent in the solution, so the relative damage degree increased. The sensitivity of Poa pratensis seed to snow melting agent was the highest among the 5 kinds of landscape plant seeds, which could be an indicator to test the damage degree of snow melting agent to plant seed.