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在棉花氮素营养诊断中,以叶柄硝态氮、叶片全氮及碳氮比值作为指标已有过不少研究。而以氨基氮作为棉花氮素营养诊断指标的报道还少见。本文就不同氮素营养水平对棉花叶片氨基态氮的影响进行了研究,以期探讨叶片氨基态氮作为棉花氮素营养诊断指标的可能性。
In the diagnosis of nitrogen nutrition of cotton, there have been many researches on the indexes of petiole nitrate nitrogen, leaf total nitrogen and carbon-nitrogen ratio. However, reports of amino nitrogen as a diagnostic indicator of cotton nitrogen nutrition are still rare. In this paper, the effects of different nitrogen nutrition levels on the amino nitrogen of cotton leaves were studied in order to explore the possibility of amino nitrogen as a diagnostic index of cotton nitrogen nutrition.