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在不同Zn2+活度（pZn2+9.7，pZn2+11.0和pZn2+＞11.5）的溶液培养条件下，研究了水稻耐低锌基因型的生长发育和若干生理特性。结果表明:水稻锌营养存在明显的基因型差异，降低锌离子活度会增加地下部于物质的积累，当Zn2+活度从pZn2+9.7下降到pZn2+11.0时，耐低锌品种的地上部干重虽下降，但因地下部干重显著增加，故总干重相近;锌敏感品种则地上部干重显著下降，而地下部干重增加不明显，总干重显著下降。当严重缺锌（pZn2+＞11.5）时，所有基因型水稻的干重构极显著地下降，但锌敏感品种比耐低锌品种下降得更多。降低Zn2+活度使水稻秧苗的出叶速度减慢，在极度缺锌条件下，敏感品种只能生长到3.5叶，而耐低锌品种能生长到4.5叶左右。对叶绿素和根系氧化力的测定结果表明，轻度缺锌或缺锌初期会使叶绿素含量上升和根系氧化力下降，但严重缺锌时，则使叶绿素含量显著降低，而使根系氧化力明显增加。锌敏感品种比耐缺锌品种的变化更为明显。锌离子活度对秧苗的含水量也有明显的影响。因此，耐低锌基因型在低Zn2+活度条件通过保持较低的根氧化作用，促进根系生长以维持地上部新叶生长，达到低锌适应稳态。
Under different Zn2 + activities (pZn2 + 9.7, pZn2 + 11.0 and pZn2 +> 11.5), the growth and development and some physiological characteristics of low-zinc tolerant rice genotypes were studied. The results showed that there was a significant genotypic difference in Zinc nutrition of rice, reducing the activity of Zinc increased the accumulation of material in underground. When Zn2 + activity decreased from pZn2 + 9.7 to pZn2 + 11.0, Although the weight decreased, the total dry weight was significantly increased due to the significant increase in the dry weight of the underground part. However, the dry weight of the aboveground parts of the zinc-sensitive cultivars dropped significantly while the dry weight of the underground parts did not increase obviously. The total dry weight decreased significantly. When severe zinc deficiency (pZn2 +> 11.5), dry weight remodeling decreased significantly for all genotypes, but zinc-sensitive varieties declined more than low-zinc-tolerant varieties. Reducing the activity of Zn2 + slowed down the leaf emergence rate of rice seedlings. In the condition of extreme zinc deficiency, the susceptible variety could only grow to 3.5 leaves, while the low-zinc tolerant variety could grow to about 4.5 leaves. The results of the determination of chlorophyll and root oxidation showed that chlorophyll content and root oxidation decreased slightly in the early stage of zinc deficiency or zinc deficiency. However, in the case of severe zinc deficiency, the chlorophyll content decreased significantly and the root oxidation power increased significantly . Zinc-sensitive varieties are more obvious than zinc-tolerant varieties. Zinc activity also has a significant effect on the water content of the seedlings. Therefore, low-Zn tolerant genotypes could promote root growth by maintaining low root oxidation at low Zn2 + activity to maintain the growth of new shoots above shoots and achieve low zinc adaptation to homeostasis.