Abstract
This experiment was undertaken in order to introduce the vulnerable plant species Penthorum chinense population on the wetland planting ground at the regulating reservoir, using direct seeding, planting pot-seedlings and transplanting of the native-seedlings. The planting ground was made of the sandy clay loam and covered with the topsoil of the paddy field. As a growth management after the introduction, Solidago altissima L., Echinochloa crus-galli var. caudata and so on were removed selectively. It was proved that Penthorum chinense rooted in each way. They flowered, bore fruit and the number of population increased by vegetative propagation. The more certain way of the introduction was considered to use pot-seedlings.
