School of Agriculture, Food and Ecosystem Sciences - Theses

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Biometric studies of some eucalypt plantations in South China

He, Sanzhong ( 1987)

Biometrical studies Of introduced tree species in the Dongmen area are presented in two parts. In the first part, a number of tree volume functions were fitted to data for E. exserta. A simple weighted regression model was found to be most appropriate. This model proved to be better than that recommended by local mensurationists in Guangxi. In the second part, fertilizer trials are reported for eighteen seed strains under five fertilizer regimes. These strains were finally clustered into four groups in terms of performance. All strains of E. camaldulensis proved most successful for all levels of fertilizer used. Further analysis showed that E. camaldulensis responded best with highest levels of nitrogen, phosphorus and potassium plus trace elements used, and that the addition of trace elements did not significantly improve response.