光照、温度、土壤水分和播种深度对披针叶黄华种子萌发及幼苗生长的影响

摘要

Thermopsis lanceolate is the poisonous and medicinal plant resource which often grows in north pasture of China. The present study analyzed the influence of light, temperature, soil moisture and sowing depths on the seeds germination and seedlings growth of T. lanceolate. The results showed that 25 ℃ was the most fitting temperature for seed germination under constant light and alternating light （16 h） and dark （8 h） conditions; The alternating day/night temperature （25℃/15 ℃） was the most appropriate temperature treatment for seed germination under the alternating light （16 h） and dark （8 h） condition; T. lanceolate seeds germination was not sensitive for light; The most proper soil water content and sowing depth was 7%-12% and 0.5-2.0 cm ,respectively for the germination of T. lanceolate seeds.%披针叶黄华（Thermopsis lanceolate）是我国北方草地广泛分布的一种有毒多年生草本植物，且具有一定的药用价值。本研究分析了光照、温度、水分和播种深度等环境因子对披针叶黄华种子萌发的影响。结果表明，持续光照、持续黑暗和16h／8h光暗交替时披针叶黄华种子萌发最适宜的温度为25℃；16h／8h光暗交替下，25℃／15 ℃日夜变温是披针叶黄华种子萌发最适宜温度；其种子萌发对光照不敏感；种子萌发最适宜的土壤含水量为7％～12％，最适宜播深为0．5～2．0cm。