Abstract:
Fertilizer test was carried out on the progeny of 4yearold advanced generation provenance of Cunninghamia lanceolata stand, and then investigated the growth status of 2yearsold growth stage. The results indicated that comparing with CK, A3、B3、C3 fertilizer treatment were highly significant promoted the growth of breastdiameter, tree height and crown diameter, showing well followup growth promotion effects. B2、C2 treatment had a good sustained effect on breastdiameter and crown diameter, indicating that a suitable ratio of N、P、K were sequential improvement of the growth of breast diameter, while the effect of the other fertilizer treatments were not significant. When the ratio of carbamide and compound fertilizer was 1∶2 and fertilizing amount was 075kg/plant, the economic character of Cunninghamia lanceolata was the best, such as, in the 2 years growing period, the breastdiameter and tree height increment reached up to 52m and 25m respectively, and the followup growth could be sustain longer. The results would provide a reference for the production management and low yield stands of Cunninghamia lanceolata to increase production.