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以叶柄硝态氮作为棉花氮素营养诊断指标,国内外有过不少研究。本文在探讨“棉花氨基态氮与氮素营养水平的关系(见《植物生理学通讯》1986年第4期33—36页)的同时,就不同氮素水平对叶柄硝态氮的影响及硝态氮与叶片氨基态氮、全氮、棉花产量之间的相互关系进行了研究,以期提出经济有效施用氮肥的诊断指标。
Petiole nitrate nitrogen as a diagnostic index of cotton nitrogen nutrition, there have been many studies at home and abroad. In this paper, we will discuss the relationship between nitrogen status of cotton and N nutrition (see Phytophysiology Newsletter, Issue 4, 1986, pp. 33-36), and the effect of different nitrogen levels on petiole nitrate nitrogen and nitrate content Nitrogen and leaf amino nitrogen, total nitrogen, cotton production was studied in order to propose a diagnostic indicator of economic and effective application of nitrogen fertilizer.