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Final percentage emergence of six species at different sowing depths (0·0, 0·5, 1·0, 1·5, 2·0, 3·0 4·0, 6·0 cm) and water supplying regimes (5·0, 7·5, 10·0 mm at 3-d intervals). Each point represents the mean of five replicates (±s.e.). (A) Agriophyllum squarrosum; (B) Artemisia sphaerocephala; (C) Artemisia ordosica; (D) Caragana korshinski; (E) Hedysarum fruticosum; (F) Medicago sativa.
