Studies on the Growth Response of Young Paulownia Plantationto Different Soil Texture

3 years survey and analyse,the growth response of young Paulownia plantation to 4 different soiI textures is as follows:(1)the order of soil texture in which Paulownia grows from best to worst is:sandy loam(0～100 cm),loam((0～100 cm),upper clay withlower sandy loam(0～60 cm clay loam,60～100 cm sandy loam),upper sandy with lowerclay loam(0～60 cm sandy loam,60～100 cm clay loam);(2)the growing process of young Paulownia in the same soiI texture is uncertain,compreherisive action of enviromental factors during different growing season can change Paulownia growing process within the sameperiod;(3)it will be beneficial to Paulownia growth to dig and plant through the clay layer-within the soil along the Huang River reaches.