root clay
2.Thirdly, monosulfuron’s depths of leaching and lengths of maize’s root could be expressed in quadric equation, with 14cm, 21cm, 25cm as the depths of maximum density respectively in black soil, black calcium soil and dark brown soil, which was negative correlated with amount of clay in the soil by principal component analysis and stepwise procedure.
4.In autumn 1990, a museum in Beijing held an arts and crafts exhibition where over 700 pieces done by prisoners in calligraphy, seal cutting, sketching, oil painting, traditional Chinese painting, gouache, clay sculpture, stone carving, jade carving, wood carving, root carving, batik, embroidery, weaving, and paper cutting were displayed, which was well-received by the public.
