Walnut's growing environment and local conditions

Walnut growing environment and conditions

Walnut trees are widely distributed in the southern region, and are more widely distributed in Yunnan, Guizhou, Sichuan and other regions. They are also distributed in Heilongjiang and Northeast China in the north, but you need to take measures to keep warm in winter. Walnuts are distributed throughout my country, among which Hotan in Xinjiang, Fenyang in Shanxi, Baoan in Hebei, Hangzhou in Zhejiang and other places are the main walnut producing areas.

Walnut Growing Conditions

Walnut trees have a strong adaptability to the environment. Generally, they can be planted in soil with a pH value of 6.2-8.2 and a soil layer thickness greater than 1 meter. They are not suitable for planting in overly acidic or alkaline land, low-lying and easily flooded land, and windy places. In the south, planting requires high altitudes, and in the north, low altitudes. In places with relatively large and concentrated rainfall, attention should be paid to ridge planting and good drainage facilities.

Walnut growing temperature

The average annual temperature suitable for the growth of walnut seedlings is 8-15 degrees, the extreme minimum temperature is not lower than minus 30 degrees, and the extreme maximum temperature is 38 degrees. In areas with a frost-free period of more than 150 days, young trees will freeze to death at -20 degrees Celsius. Although adult trees can withstand low temperatures of -30 degrees Celsius, if the temperature is lower than minus 28 degrees, the branches, male flower buds and leaf buds will be frozen.

Walnut growth process

After the walnut trees are planted, new buds and stamens appear in March. When the stamens are about to fall, the walnut pistils begin to grow and pollinate. In May, the walnut fruits are already very large. The fruits expand and accumulate oil in June, July and August, and can be harvested in September. It takes more than half a year for walnuts to grow and mature.

Walnut planting time and method

Walnuts are suitable for planting during the period from autumn leaf fall to spring budding. The best time is from November to February of the following year. In most southern regions such as Sichuan, Hubei, Hunan, Chongqing, Guangxi, Jiangxi, Yunnan, Guizhou, etc., the best planting time is winter. In northern regions such as Henan, Hebei, Shaanxi, etc., the best time to plant is in spring.

Walnuts are suitable for planting on sandy soil rich in organic matter. Each region has its own special varieties. It is necessary to choose suitable seedlings according to local environmental conditions and the characteristics of the variety, find a good spacing between plants and dig holes, water thoroughly after sowing, and then cover the soil layer of the plant with a layer of plastic film to keep warm.