Adaptability Evaluation of 18 Cowpea Varieties in Early Spring Facility Cultivation in Fuzhou Region

In order to screen the cold-resistant and high-yielding cowpea varieties suitable for early spring facility cultivation in Fuzhou, by taking Xiaofubao as the control variety, the comparative experiment was carried out on the agronomic traits and yield of 18 cowpea varieties. The results showed that: Changlong variety exhibited the following characteristics: flowering at 65 days, moderate growth vigor, green outer leaves, an average node position of 3.5 for the first inflorescence, initial harvest at 78 days, purple flower color, dark green pods, no swollen seeds, no rat-tailing, average pod length of 69.0 cm, average pod diameter of 0.85 cm, susceptible to leaf spot disease, resistant to rust disease, etc. Its yield was 41062.80 kg·hm⁻², which was 27.58% higher than that of the control. Cuijiang exhibited a flowering period of 67 days, moderate growth vigor, green outer leaves, an average node position of 3.5 for the first inflorescence, a harvest onset period of 78 days, purple flowers, green pods, slight pod swelling, no rat tail, average pod length of 71.0 cm, average pod diameter of 0.73 cm, moderate resistance to leaf spot disease, and susceptibility to rust disease. Its yield was 37289.70 kg·hm⁻², which was 15.86% higher than that of the control. The yield of Qingjiang No.2 and Qingtiao Sijilv was equivalent to that of Cuijiang, and the yield was quite different from that of Changlong, so they were not recommended. For the early spring facility cultivation in Fuzhou area, Changlong was recommended for the growers preferring dark-green pods, while Cuijiang was recommended for those favoring green pods.