Burst in oil.

Walnuts, also known as walnuts, qiangmao, is a plant of the walnut family. With walnuts, cashews, hazelnuts and known as the world-famous "four big dry fruits". Walnut kernel is rich in nutrients, per 100 grams of protein 15-20 grams, more fat, carbohydrates 10 grams, and contains essential calcium, phosphorus, iron and other trace elements and minerals, as well as carotene, riboflavin and other vitamins. Beneficial to the human body. It is one of the nut foods loved by the people. Walnut body surface shell hard, need to be smashed to eat.

According to the 2008 China Statistical Yearbook, the national walnut cultivation area is 1.667 million hm?, about 400 million plants. According to the statistics of the Afforestation Department of the State Forestry Administration, 800,000 hm? of walnuts are now cultivated in Yunnan Province, 333,000 hm? in Shanxi Province, 302,000 hm? in Shaanxi Province, and 200,000 hm? in Hebei Province.

According to the 2008 China Forestry Yearbook statistics in 2007, the total output of walnut in China was 499,000t, accounting for 29.35% of the world's total output, including 91,000t in Yunnan, 64,000t in Shaanxi, 53,000t in Shanxi, 47,000t in Hebei, and so on. At present, China's walnut production inputs are small, the degree of seeding is low, and the level of cultivation and management technology is limited. Compared with the United States, the yield per unit area is low, the national average yield per plant is about 1.5kg, and the unit area is less than 20kg/㎡.