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大桉(Eucalyptus delegatensis R.T Bak.,斑皮桉(E.maculata Hook),和布罗韦桉(E.brockwayi C.A.Gardn)的幼苗在一种具生根介质的土壤中生长十个星期,以五种不同营养液分别处理,每天淋灌,经一段时间后测定相对生长率和氮含量。在养分调节期间,幼苗的相对生长率和相对养分吸收率存在一定的相关。根同化物的分布,在低浓度养份为0.35(根重量/总重量)而在高浓度养份则降至0.10。
Seedlings of Eucalyptus delegatensis RT Bak., E. maculata Hook, and E. brockwayi CAGardn were grown in a soil with rooting medium for ten weeks in five different Nutrient solution were treated with watering every day, after a period of time to determine the relative growth rate and nitrogen content in the nutrient regulation period, the relative growth rate of seedlings and relative nutrient absorption rate there is a certain correlation root distribution of the distribution of compounds at low concentrations Nutrients were 0.35 (root weight / total weight) and decreased to 0.10 at high concentrations of nutrients.