Composition of Lei Bamboo Rhizomatic System

Key words: 
• Lei bamboo (Phyllostachys praecox f. preveynalis) /
• bamboo sprouts /
• buds /
• bamboo rhizome

Abstract: Lei bamboo had 5.6 rhizomes per square metre, and their length was 9.6m per square metre and volume 4.710-4m3 persquare metre. Over 80.0 percent of the rhizomes were distributed at depth of 11 to 40 cm and the number of rhizomes at 2~4-year-old accounted for 85.0 percent of the total rhizomes. The great part of sound buds making up 31.1 percent of the total buds appeared on the rhizomes at the age of 3~4 years on which 70.0~80.0 percent of bamboo sprouts could be developed in the same year. At the middle of rhizomes (joint 6~15), there were 58.7 percent of sound buds and 70.1 percent of bamboo sprouts, and the rhizomes generally branched near the tip (joint 1~6). The rhizomes growing upwards and parallel to bamboo forest land accounted for 80.0 percent of total rhizomes. The development of rhizomes was good in fertile, loose and ventilating soil with good function of water absorption and fertility preservation, and the rhizomatic composition could be rationally made in bamboo forests with the density 10000~11000 stocks per hectare.