2008•Northern HorticultureRequires access

Effect of Different Nitrogen Forms on Nitrate and Oxalate Accumulation of Spinach

Qin Gai-hua

Abstract

Hydroponical experiment was carried out to study the effect of nitrogen forms on growth and nutritional quality of spinach.The results showed:The biggest biomass of spinach was found in the ratios of NO-3-N to NH+4-N of 100/0.The biomass were decreased but roots/shoot was increased with the increasing of ammonium nitrogen form ratio.The contents of nitrate and oxalate decreased with the increasing of ammonium nitrogen form ratio,and they were lowest for complete ammonium nitrogen.The content of vitamin C was highest when the ammonium nitrogen form ratio was at 25/75.

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Key concepts: Spinach, Nitrogen, Ammonium, Chemistry, Nitrate, Oxalate, Biomass (ecology), Ammonium oxalate