Formulate fertilization was employed on both young and grown plantation of oil-tea camellia(Camellia oleifera) superior clone by random section or orthogonal trial.

Having investigated all sorts of Ginkgo biloba in Shongxian county, by primary election,Subsequent election and high grafting contrast test, two sorts of Ginkgo biloba superior clone have been chosen.

Taking Camellia oleifera superior clone "XL67" as materials and using the Li-6400 portable photosynthesis system, diurnal dynamics of net photosythetic rate (Pn), transpiration rate(Tr), and their mutual relationship with physiological ecology factors were studied in this paper.

Research of rapid propagation and tissue culture of elite clone Cinnamomum camphora;

Elite clones Xianglin 1,Xianglin 104,Xianglin XLC15 and elite sibilings Xianglin 5,Xianglin XLJ14,which were seleceted by Hunan Academy of Forestry by systematically study for more than 20 years,had been certificated by State Forestry Administration Bureau.

Studies on elite clones selection of Ulmus macrocarpa var.

Sixty-one fine clones of Catalpa bungei from Research Institute of Forest,Chinese Academy of Forestry were used as test materials.

Starting with the production flow of industrial seedling-raising of fine clone of Eucalyptus, this paper systematically introduced the technique of tissue culture of fine clone of Eucalyptus and the techniques of cuttage seedling-raising with the cutting wood produced in the cutting orchard in which tissue culture seedlings in blocks were used as stock trees.

The present situation of production and research of Camellia oleifera was discussion in thepaper,the selection of fine varieties and application of Camellia oleifera about peasant family varietiea,fine family and fine clone during 30 years were discussion in the paper.