Abstract:

Thirty-two Pinus massoniana clones for pulp use were selected from forests of fine provenance, mixed families and progeny test of seed orchard by two steps of selection, based on the growth, wood property of the ortets and cutting rooting abilities. The average height and DBH growth of three years old of these clones were 28.6 percent and 16.7 percent respectively higher than those from seedlings, and average gain of wood density got to 8.7 percent. And rooting rate of all these clones was over 80 percent, increased 28 percent than all the clones selected by first step. 0.33 hm² cutting orchard on the hillside was constructed to intensively produce cuttings according to the tests on construction ways, pruning and fertilization. 50 000 degree Ⅰ, 37 500 degree Ⅱ and 62 500 degree Ⅲ cuttings could be collected per hectare of this cutting orchard each time, and could be cut for 3 times in a year. With all above techniques, 48 hm2 clonal forests for pulp use of those clones had been planted in five places in Fujian Province. And container stecklings did good to increase the planting survival rate.

Key words: Pinus massoniana, Clones for pulp use, Selection, Cutting orchard, Plantation