In order to understand the nutrients accumulation of sugar orange fruit during it development to carry out the nutrients comprehen-sive management of the fruit tree,mineral element of N,P,K,Ca,Mg uptake were measured at different developing stage for both 4 and 8 years old sugar orange fruit tree.The results showed that nutrients absorption by individual fruit was in order of N＞K＞Ca＞P＞Mg for both of four-year and eight-year old tree in whole fruit developing stages.The average uptake of N,P,K in four-year old tree was significantly higher than those of eight-year old one,but the average uptake of Ca,Mg in eight-year old tree was significantly higher than those of four-year old one.The result also showed that Ca was mainly accumulated in peel and Mg in pulp of the fruit.
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万方数据