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中文摘要：
为了探明CaCO3对不同基因型小麦Zn吸收的影响，采用人工春化后的小麦幼苗在温室中进行了水培试验。结果表明：缺Zn和在营养液中添加100mg／LCaCO3对小麦分蘖和生长发育未表现出明显的不良影响，而供试的3种基因型小麦（远丰998、中育6号及小偃22）的分蘖数及长势有明显的差异。与缺Zn相比，供Zn使小麦根部P吸收量增加25．6％，但对N，K吸收无明显影响。供Zn显著提高了小麦植株各部分尤其是根中的Zn含量和吸收量，而不同基因型间无显著差异，添加CaCO3未降低对Zn的吸收。添加CaC嘎后，小麦叶片叶绿素SPAD值降低21．4％，但对小麦植株的Fe吸收无明显影响。据此推测叶绿素SPAD值的降低并非由于CaCO3降低小麦对Fe的吸收而引起的，其原因有待进一步研究。而供Zn仅能增加小麦根部Fe吸收量，对地上部无明显影响。无论是否供Zn，Fe主要累积在小麦的根部，而供Zn加剧了这种累积。
英文摘要：
A solution culture experiment was conducted to investigate the influence of calcium carbonate on zinc uptake using three wheat genotypes （Yuanfeng 998, Zhongyu 6 and Xiaoyan 22）. The obtained results showed that it had no obvious effect of adding Zn or CaCO3 on tillering and growth of wheat plants before earring, but it was significantly different for different wheat genotypes. Comparing with Zn deficiency, adding Zn in the nutrient solution increased by 25.6 % P uptake by root obviously, but the N and K uptake was not affected. Adding Zn in the nutrient solution could significantly increase Zn uptake compared to no Zn addition, however, there was no obvious effects for different genotypes or adding CaCO3 on uptake of Zn. The leaf chlorophyll SPAD value decreased by 21.36% under the condition of CaCO3 addition, but it had no obvious effect on Fe uptake, so adding CaCO3 perhaps was not the reason which led to the reduction of chlorophyll SPAD value. Only in the part of root Fe uptake of different wheat genotypes was increased when adding Zn, and supply Zn strengthened Fe accumulation in roots.
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