Rockeries of Four Seasons (Siji Jiashan) in the Ge Garden, House of Rockeries (Pianshi Shanfang) and Attached-to-wall Rockeries (Tiebi Jiashan) in the He Garden, Rockeries World (Juanshi Dongtian) and Flowing Water on Rockeries (Shibi Liucong) in the Park of Slender West Lake in Yangzhou City were taken as representatives of rockeries in Yangzhou gardens. Plant furnishings and their combinations with rockeries were analyzed, for example, plants can be applied as the background to support the rockeries; closely combined with rockeries to form the principal scenery; applied as decorations to supplement rockeries; applied as the foreground to enrich landscape layer. Characteristics of plant and rockeries landscaping were analyzed, and it was proposed that rockeries landscaping was combined with cultural characteristics of plants, focused on diversity of plant furnishings and also combination of plant figures and appreciation perspectives, and valued growth habits of plants. On this basis, relevant suggestions were given for the construction of rockeries in Yangzhou gardens.
The growth situation and peroxidase （POD） of seedlings of two tomato cultivars were investigated under the stress of different concentrations of Cu^2＋ and Cd^2＋ . The toxicity differences of Cu^2＋ and Cd^2＋ to tomato seedlings and the corresponding differences between two tomato cultivars were observed through the stress trial with the ahove two heavy metal ions, The resubs showed that low concentration of Cu^2＋ and Cd^2＋ could promote the growth and could enhance the POD activity of tomato seedlings, while high concentratiun Cu^2＋ and Cd^2＋ could inhibit seedling growth and POD activity of tomato seedlings. Cd^2＋ functioned more obviously than that of Cu^2＋ , two tomato cultivars also presented difference in response to heavy metal stress.
