Walnuts are widely distributed in China, including Heilongjiang, Liaoning, Tianjin, Beijing, Hebei, Shandong, Shanxi, Shaanxi, Ningxia, Qinghai, Gansu, Xinjiang, Henan, Anhui, Jiangsu, Hubei, Hunan, Guangxi, Sichuan, Guizhou, Yunnan and Tibet.
Inner Mongolia, Zhejiang, Fujian and other provinces (regions) have introduced or cultivated a small amount. The main producing areas are in Yunnan, Shaanxi, Shanxi, Sichuan, Hebei, Gansu, Xinjiang, Anhui and other provinces (regions). Sanguan Forest District, Bozhou City, Anhui Province, is known as the largest walnut forest farm in Asia.
The horizontal distribution range of walnuts in China: from Mengla County, Yunnan Province, 2108 ′ 32 "north latitude to Bole County, Xinjiang, 44 54 ′ north latitude, with a longitude of 23 25 ′; It starts in Tashkurgan, Xinjiang, with an east longitude of 7515' and ends in Dandong, Liaoning, with an east longitude of124 21',spanning 49 06'.
Extended data:
Walnut planting steps:
1, select suitable varieties.
The selection of walnut varieties should comprehensively consider management level, planting density, site conditions and other factors.
2. Build a garden in the right place
It is particularly important to choose suitable planting areas according to local conditions. Building a garden in a suitable area can make full use of the ecological environment and natural resources of the producing area and lay the foundation for the good development of walnuts.
3. Fertilizer and water management
Before germination, after flowering, hard core stage and after fruit picking, etc. It is the key stage of fertilization, in which nitrogen fertilizer is the main fertilizer before germination and after flowering. According to the crown size and fruit yield, urea is 0.5~ 1.5kg per plant each time, potassium dihydrogen phosphate+potassium sulfate is the main fertilizer in the hard-core stage, and 1kg is applied to plants around the crown dripping water. After fruit picking, organic fertilizer should be the main fertilizer.
4. Pest control is common in walnut trees, such as Anoplophora chamaejasme, scarab, silkworm moth, Lepidoptera, scale insect, black spot disease, anthracnose, canker and so on. , should be comprehensive management.
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