沙生植物种子萌发特性的研究

Characteristic on seed germination of Psammophyte

沙生植物长期生活在风沙大、雨水少、强烈日照、冷热多变、营养物质缺乏的严酷气候下,其生命力非常顽强,本试验以砂生槐、花棒、毛条和沙冬青为试材进行了沙生植物种子的萌发试验。结果表明:在相同条件下,毛条、沙冬青、花棒和砂生槐的发芽率分别为73%、69%、54%和25%。25℃是四种种子萌发的最适合温度,起始高温处理对四种种子萌发无促进作用;但是冷处理都对他们的萌发有一定的促进作用。

Psammophyte＇s vitality is tenacious, even though they endure the severe climate, such as big sandstorm, few rain water, intense sun shines, cold and hot changeable, deficient nutrients and so on. The result indicated that the germination rate of Caragana Korshinskii Kom., Ammopiptanthus mongolicus （Maxim.） Cheng f., Hedysarum scoparium and Sophora moorcroftiana is 73%. 69%, 54% and 25% under the same condition. The temperature of four kind of seeds sprouts most suits is 25℃ and the initial high-temperature treatment has non-promoter action on seed germination of four plant seeds. But it has certain promoter action for seed germination to cold treatment.