What are the latest producing areas of walnuts?
Walnut like light, cold resistance, drought resistance, disease resistance, adapt to a variety of soil growth, like fertile and moist sandy loam, like water, fertilizer, like the sun, at the same time, the requirements of water and fertilizer are not strict, after defoliation to before germination should not be pruned, easy to produce wound flow. Suitable for the growth of most of the land. Like fertile and moist sandy loam, often found in deep soil layers on both sides of mountain valleys.
Walnuts are produced in North China, Northwest, Southwest, Central China, South China and East China, and southern Xinjiang. Distributed in Central Asia, West Asia, South Asia and Europe. Born in hillsides and hills of 400-1800 m above sea level, it is commonly cultivated in plain and hilly areas of China.
Walnuts are widely distributed in China, including Liaoning, Tianjin, Beijing, Hebei, Shandong, Shanxi, Shaanxi, Ningxia, Qinghai, Gansu, Xinjiang, Henan, Anhui, Jiangsu, Hubei, Hunan, Guangxi, Sichuan, Guizhou, Yunnan and Xizang. Inner Mongolia, Zhejiang and Fujian provinces (regions) have a small number of introduction or cultivation. The main producing areas are Yunnan, Shaanxi, Shanxi, Sichuan, Hebei, Gansu, Xinjiang and other provinces. Walnut is one of the most widely distributed economic tree species in China.
The horizontal distribution range of walnut in China is from Mengla County, Yunnan Province, latitude 21 °08: 32 "N, to Bole County, Xinjiang, latitude 44 °54'N, longitude 23 °25 °, west longitude 75 °15', Xinjiang Tashkurgan, east longitude 124.
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