Dynamics of Growth and Development of Sprout,Effect of Fertilization and Management on the Vegetative Propagation Nursery for Chinese Fir

In vegetative propagation nursery of Chinese fir,in Shaowu region of Fujian Province,the cutting donor plant of 4～6 years were observed with fixed plant for 3 years,as that growth and development law of cutting donor plant were known in different working methods of coppice shoots,and preliminary effect of fertilization were studied.The results showed:there were very strong law on growth and development of sprout of cutting donor plant.After all clearing away coppice shoots in late August,September was pregnant bud period,October was period for quickly growing of coppice shoots,November was period for slowly growing of coppice shoots,until growing stopped.The ability of sprouting of donor plant was very strong in April and May.Second were in August and September.But the growing speed of coppice shoots was more quickly in June and July,and the second was Septemer,and the correlation was close between month average temperature and growing speed of coppice shoots.For the fertilization experiment,the results showed:there were significant increasing yields fertilizing urea and multiple fertilizer than CK,there were no significant difference in increasing production effect between two fertilization special,the best effects of fertilization were on early March and late August for two times,increasing rate of total coppice shoots were 54.0%～56.9% in a year, and fertilizing quantities of urea or multiple fertilizer 187.5～225 kg/hm2 were adaptable every time.According to sprouting law of cutting donor plant and there were theory and practice of stock plant management and fertilizer and soil management,“three times cutting coppice shoots,three times cutting,three times management in a year” management regulation of vegetative propogation nursery were mentioned.