Influence of light, temperature, soil moisture and sowing depths on the seed germination and seeding growth of Thermopsis lanceolate

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.