研究了大豆结荚期和棉花花铃期持续受渍对产量的影响。结果表明 :随SEW3 0 值 (地下水埋深小于 30cm的累积值 )增大 ,大豆和棉花产量均呈现下降趋势 ,相比之下 ,棉花花铃期受渍比大豆结荚期受渍对产量影响更敏感 ,这表明在产量形成的关键生育期大豆的抗渍能力比棉花要强。棉花花铃期受渍对果节成铃分布和果枝成铃分布没有明显影响 ,但影响结铃数和成铃数 ,从而造成棉花减产 ,随充分受渍持续时间不同 ,减产幅度在 1 8 34 %～ 41 1 0 %。 The effects of continuous soaking of soybean during podding and bollwill on yield were studied. The results showed that with the increase of SEW30 value (the cumulative value of groundwater depth less than 30cm), the yield of both soybean and cotton showed a downward trend. Compared with the SEZ30 value, More sensitive, indicating that soybeans are more resistant to stains than cotton in the key growing stages of yield formation. The cotton bolls had no significant effect on the distribution of bolls and the distribution of bolls in bolls, but the number of bolls and the number of bolls were affected, which led to the decrease of yield of cotton. With the duration of full bolting, the yield reduction was in the range of 1 8 34 % ~ 41 1 0%.