Abstract: Rhizome knots of Leymus chinensis were cultured in 4 different concentration solutions of alkaloid from the flowers of Artemsia sieversiana and under a control condition. Cell division and apparatus development on the rhizome were observed with microscope. Allelopathic effect of A. sieversiana on development of L. chinensis was studied . The results showed that:compared to control, the extracts at 1% had weak effects on the germination numbers of roots and germination from pith ray, while the extracts at 5% or 10% could stimulate their germination. However , with the concentration increase, it restricted their germination.The extract had weak effects on the germination of the bud. Compared to control , the number of bud germination at 1%, 5%, 10% and 20% concentration had no obvious difference.

Key words: Huangpu District of Guangzhou City, Nycticorax nyctiorax, Ardeola bacchus, Mercury, Distribution pattern