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以小麦（扬麦５号）幼苗为材料，研究了外源 Ｃａ２＋对 Ａ１３＋胁迫下小麦的苗根细胞 膜脂质过氧化作用（ＭＤＡ含量）、细胞电解质泄漏、膜保护酶活性及质膜和液泡膜微囊Ｃａ２＋─ ＡＴＰ酶活性的影响．结果显示在 Ａ１３＋胁迫下，增加 Ｃａ２０的供应可以减轻 Ａ１３＋对根系伸长及干物 质积累的抑制作用，并可减轻 Ａ１３＋胁迫诱导的根细胞电解质渗漏率和 ＭＤＡ含量的增加、过氧 化氢酶（ＣＡＴ）、抗坏血酸过氧化物酶（ＡＰＸ）和过氧化物歧化酶（ＳＯＤ）、质膜和液泡膜微囊Ｃａ２＋─ＡＴＰ酶活性的降低。
Wheat (Yangmai 5) seedlings were used to study the effects of exogenous Ca2 + on the membrane lipid peroxidation (MDA content), cell electrolyte leakage, membrane protective enzyme activity and plasma membrane and vacuolar membrane in wheat under A13 + stress Effect of microcapsule Ca2 + ─ ─ ATPase activity. The results showed that under the stress of A13 +, increasing the supply of Ca20 could alleviate the inhibitory effect of A13 + on root elongation and dry matter accumulation, and alleviate the increase of electrolyte leakage and MDA content induced by A13 + stress. The increase of catalase CAT, ascorbate peroxidase (APX) and superoxide dismutase (SOD), plasma membrane and tonoplast Ca2 + -ATPase activity decreased.