Abstract:

The technique of artificial cultivating was resolved through seed germination and seedling culture of Ammopiptanthus mongolicu. It is provided that the technical measure for its artificial breeding. The effects of salt solution, covering sand thickness, treating methods and temperature on seed germination of Ammopiptanthus mongolicus were studied under laboratory and flowerpot. The results indicated that: (1)The optimal temperature for the seeds to germinate was 15~35℃, transient water temperature of 60、70、80℃ disposal may urge the seed to attract effectively, raises the germination percentage, the germination percentage reached above 80%; (2)Salt tolerance of seed was lower when the NaCl solution density exceeded 0.8％, and germination rate would decreased rapidly; (3)The percentage of remaining hard-coated seeds of Ammopiptanthus mongolicus was higher, and the seed was not easy socking in normal temperature condition. At the start of absorption, water content of seed increased fast, and relative amount decreased gradually with the time; (4)The optimal seed-covered sand thickness was 1~2 cm; (5)The optimized breeding soil was small sandy loam soil, seedlings growth and biomass displayed the quick growth, and sandy loam was the ideal soil of breeding. The seed of Ammopiptanthus mongolicus can sprout normally in the suitable temperature range. Temporary high temperature water could increase velocity of socking and promote seed germination. Seed of Ammopiptanthus mongolicus was sowed in the sandy soil, soil covering depth was 1~2 cm, and raising seedlings can obtain success.