Effect of Mold on Shape of Culm of Phyllostachys edulis

On 10 April 2019, shoots of Phyllostachys edulis were treated with stainless steel square mold of 200 cm high and with different diameter round holes, with steel plate thickness of 0.12 cm, 0.15 cm and 0.18 cm. On July 20-21, molds were removed, and determinations were implemented on average internode length, numbers of node of bamboo shoot in the molds and CK ( no mold). Analysis was made on differences of shape, node and DBH growth. The results showed that plate thickness had no great influence on internode length, number of nodes, culm height and DBH, but the experiment resulted that the plate thickness should be more than 0.12 cm. Internode length and culm height had positive relation with size of round holes at mold, while numbers of node had obvious negative correlation. There was no significant difference in DBH among different treatments.