Different varieties of cowpea have different yield per acre, the high yielding varieties are Zhi Cowpea 19, Zhangtang Wadou and Zhi Cowpea 844. Cowpea 19: strong growth, vine length about 2.5 meters, pod length about 60 cm, mu yield 1500-2000 kg. Zhangtang Wadou: strong growth, high pod yield, pod length about 65 cm, yield about 2000 kg per mu. Zhi Cowpea 844: strong plant growth potential, pod length of about 60 cm, mu yield of about 2000 kg.