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过去认为,大多数以至所有被吸收的NO_2都在根中转化为氨基酸进行运输,因此,与其他木本植株一样,人们长期忽视柑桔树地上部中硝态氮的存在。只是近二十年来,随着分析方法的改进,柑桔树中的硝态氮才受到重视,但已做的大多数工作仅涉及叶片和木质部汁液中的硝态氮,而极少了解柑桔树其他部分中硝态氮的分布。 1983年1月,在佛罗里达州中部的理德地区,从树龄为35年的同一块商业果园中取样,分别在10株健康的哈姆林甜橙和马叙葡萄柚上采取叶片、树
In the past, most, if not all, of the absorbed NO 2 was converted to amino acids for transport in the roots. Therefore, as with other woody plants, long-term neglect of the presence of nitrate in the shoots of citrus trees has long been neglected. It is only in the last two decades that with the improvement of analytical methods, the importance of nitrate nitrogen in citrus trees has been taken seriously, but most of the work that has been done deals only with nitrate nitrogen in leaf and xylem juice and little understanding of citrus Distribution of nitrate nitrogen in other parts of tree. In January 1983, a sample of commercial orchards of 35 years old was collected from the same commercial orchard in the central part of the State of Florida in Florida. Leafs and leaves were taken on 10 healthy Hamlin and Orange grapefruits, respectively