Abstract: The effects of continuous cropping obstacles on the characteristics of two new cowpea[Vigna unguiculata （Linn.）Walp] varieties Ejiangdou No.5 and Ejiangdou No.8 were analyzed. The experimental results showed that continuous cropping obstacles could cause small leaves, light pods, short pods, thin pods, premature failure, and serious pests and diseases, which could directly lead to a significant reduction in the output of the early stage and total output. The continuous cropping of leguminous crops should be avoided, and paddy-upland rotation and different families rotation shall be carried out.

Key words: cowpea [Vigna unguiculata （Linn.）Walp], continuous cropping, phytology characters, yield characters