Oxalate content in leaves of buckwheat seedlings cultured under hydroponic condition with ammonium nitrogen or urea as the only nitrogen source was much lower than that with nitrate nitrogen.

• 而乙醇酸与乙醛酸则显著提高其草酸含量，表明荞麦叶片草酸合成主要来自乙醇酸途径，而非来自抗坏血酸等途径。