本文探讨了连作对大豆的生理生化及产量的影响。试验结果表明，连作导致大豆生长发育受阻，在生理上表现净光合生产率（ＮＡＲ）、群体生长率（ＣＧＲ）降低；连作胁迫使叶片光合色素（Ｃｈｌａ、Ｃｈｌｂ、Ｃｈｌａ／ｂ、以及类胡萝卜素）含量减少；超氧化物歧化酶（ＳＯＤ）和过氧化氢酶（ＣＡＴ）活性降低；组织外渗电导率提高；膜质过氧化作用增强，丙二醛（ＭＤＡ）和脯氨酸含量（％）增加。 This article explored the continuous cropping of soybean physiological and biochemical and yield impact. The results showed that continuous cropping resulted in the obstruction of growth and development of soybean, which showed that physiological photosynthetic rate (NAR) and population growth rate (CGR) decreased. The photosynthetic pigments (Chla, Chlb, Chla / b and carotenoids) (SOD) and catalase (CAT) activity decreased; tissue extravasation conductivity increased; membrane peroxidation increased, malondialdehyde (MDA) and proline content increase.