1, origin

The origin of walnut is mainly distributed in Central Asia, West Asia, South Asia and Europe, and it is planted in Xinjiang, Gansu, Shaanxi, Hebei, Yunnan, Shanxi and Sichuan in China. Carya cathayensis is the fruit of Carya cathayensis, which is abundant in Australia, North America and other countries. The main producing area in China is only Xinjiang Uygur Autonomous Region, and Zhejiang Province has also started a small amount of trial planting.

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The shape difference between pecan and walnut is very obvious. The shape of walnut is round, the shell is thick and hard, and it is difficult to open. The pulp of walnut looks more like a human brain. Carya cathayensis fruit is oval in shape, longer than walnut, and its shell is not only thin but also brittle and easy to open.

3. Nutrition

Both kinds of nuts are rich in nutrition, but the contents of mineral elements and trace elements such as sodium, magnesium, phosphorus, iron, zinc and manganese are more than those of domestic walnuts, and their natural and wild characteristics make them more nutritious than walnuts.