中文摘要：

不同植物和不同生长期烟草叶片中抗坏血酸含量变化与相应的草酸含量变化之间都无显著的相关性；喂饲外源抗坏血酸后的水稻和荞麦叶中草酸含量提高不明显。据此推测：尽管不能排除抗坏血酸可能是植物草酸合成的前体，但其内源含量高低不一定影响植物中草酸积累。

英文摘要：

Ascobate content and the corresponding oxalate content were determined in the leaves of various species and tobacco leaves at different growth stages. It was shown that no significant correlation existed between the two organic acids in tobacco leaves at various growth stages, and similar result was obtained for the leaves of different species. In addition, feeding rice and buckwheat with ascorbate through roots failed to increase oxalate content in the leaves. Based the above results, it is inferred that ascorbate content in plant leaves may not affect oxalate accumulation though the possibility can not be ruled out that ascorbate served as a precursor for oxalate synthesis.