Study on performance of Huahong navel orange grafted to Jincheng with two kinds of rootstock and annual changes of mineral elements content

Through the field investigation after huahong navel orange grafted on jincheng with trifoliate orange and red tangerine, comparing performance of huahong navel orange and annual changes in the contents of mineral elements with each other. The results indicated that huahong navel orange on red tangerine grew flourishingly, and put into product late, and had smaller fruit with higher total acid(TA) and lower ratio of total soluble sugar to total acid(TSS/TA) and higher percent of juice and content of Vc, and contrary on trifoliate orange. The tendency of annual changes in the contents of mineral elements except Mn and Zn in leaf had noted difference between 2 kinds of rootstock, and that in root basically coincided with each other. The difference in the contents of all mineral elements in leaf or in root between 2 kinds of rootstock were obvious during the year except Mg and Fe in root.