Study on seed yield and its components of Sophora alopecuroides under different water regimes

Study on seed yield and its components of Sophora alopecuroides under two water regimes was conducted and the results showed that the seed yield of S. alopecuroides was very high and reached 1 806 kg/hm2. Water was the major factor controlling seed yield which by reducing reproductive branch differentiation and retarding its growth. Also, there was a strong competition between vegetative growth and reproductive growth under drought habitat, but this competition decreased while water was sufficient. The research results obtained in this study might be practically used in controlling the population spreading and threaten of S. alopecuroides to grassland.