通常,植物能吸收、利用无机氮及有机氮,柑桔也不例外.Kato等报道,柑桔植株能通过根系吸收~(14)C标记的天冬氨酸、天冬酰胺、脯氨酸和精氨酸,并在根、茎、生长叶和果实中代谢成其他氨基化合物和可溶性物质.但是,果树对有机氮的吸收、利用和生理学特性尚不甚明了.因此,应重视上述问题的研究. Generally, plants can absorb and utilize inorganic nitrogen and organic nitrogen, and citrus is no exception.Kato et al reported that citrus plants can absorb ~ (14) C-labeled aspartic acid, asparagine, proline and Arginine, and metabolized to other amino compounds and soluble substances in roots, stems, growing leaves and fruits, however, the absorption, utilization and physiological characteristics of organic nitrogen in fruit trees are not clear .Thus, attention should be paid to the above problems .