关键词: 红桔, 锦橙, 纽荷尔脐橙, 晚实

Abstract: Through two-year field experiment, a comparison of growth and yield of Newhall navel orange on two combinations of interstock and rootstock was made. The results indicated that Newhall navel orange on Citrus sinensis interstock and C. tangerina rootstock (treatment)born fruits obviously later than that on C. unshiu interstock and Poncirus trifoliate rootstock (control). The late bearing of the treatment could be attributed to that the treatment had larger length increment and less diameter increment than the control; the crown density of the treatment was larger than that of the control and the photosynthesis of it was inhibited; the content of soluble sugar in leaf was lower and the content of starch in leaf was higher than those of the control; the combination of C. sinensis interstock and C. tangerina rootstock had lower content of N and P, higher content of Ca and higher C/N value in leaf.

Key words: Citrus tangerina, C. sinensis, Newhall navel orange, late bearing