Abstract:

By using the data from 758 plots, the primary selection was carried out by correlation coefficient and standard error, then the optimum mathematical models were selected by the variance inflation coefficients in the determinations of C_p value and colinearity. The results show that at the soil depth of 0~40cm the closest relationships were found between the amount of bamboo shoot emergence and the rhizome diameter, the internode length, and the rhizome root weight of the young and healthy rhizomes, and the weight of bamboo shoot closely related to the internode length, the healthy buds, and rhizome root weight of the young and healthy rhizome. At the soil depth of 0~60cm, the closer relations were found between the amount of new bamboo and the rhizome diameter, the internode length, the rhizome weight, and healthy bud of the young, healthy, and old rhizome, and a closest relation between the weight of new bamboo and the rhizome diameter of the young rhizome, the healthy rhizome, and the old rhizome.

Key words: Phyllostachys heterocycla cv. pubescens, Underground structure, Yield, Variance inflation coefficient, Determinations of C_p value colinearity