1, Zihuashan: The appearance is thick and long, about 100 cm long, and DBH is about 6 cm.

2, purple sweet potato: beautiful appearance, purple skin color, purple meat color. The potato shape is long and spindle-shaped, and the potato skin is smooth and bright, with good commodity. The commodity rate is over 90% and the drying rate is about 33%.

Second, the nutritional value is different.

1, Zihuaishan: Purple yam has high medicinal value. Regular consumption can not only increase the body's resistance, lower blood pressure and blood sugar, resist aging and prolong life, but also benefit the functions of spleen, lung and kidney. It is a good food supplement material, also known as "the king of vegetables".

2. Purple sweet potato: Purple sweet potato is rich in dietary fiber, starch, vitamins and trace elements (selenium, iron, calcium, potassium, etc. ), anthocyanin, glycoprotein, carotene, dehydroepiandrosterone and other functional factors, with antioxidant, anti-tumor, enhancing memory, preventing hypertension, repairing myocardium, relieving liver dysfunction and enhancing immunity.

Third, the distribution area is different.

1, Zihuaishan: Jiangxi, Guangdong, Taiwan Province, Fujian, Zhejiang.

2. Purple potato: Guangdong, Guangxi, Hunan, Hubei, Fujian and Jiangxi; Other tropical areas in Asia.

The above contents refer to Baidu Encyclopedia-Purple Potato.

The above contents refer to Baidu Encyclopedia-Purple Yam.