What does a walnut tree look like? When will you plant it? How many years can you bear fruit?

Walnut tree, also known as walnut tree, its fruit walnut and almond, cashew nut, hazelnut are called "four big nuts" in the international market, the variety is divided into wild hickory and artificial grafting improved variety walnut, wild shell thick, big, oil and other characteristics, eat more fragrant, commonly known as iron walnut. People generally choose to plant artificially improved varieties, because the improved varieties have higher yield than wild varieties, thin shell, commonly known as bubble walnut. Walnut trees can be used as shelterbelts for road greening. Because of their tough and elastic wood, they are also high-quality materials used in industry. What does walnut trees look like? Its adult tree trunk varieties are different, its height is generally 2-10 meters, or more than 10 meters high, the crown is broad; bark gray-green when young, old is gray-white and longitudinally lobed; branchlets glabrous, glossy, shield-shaped glands, grayish green, later brownish.

When will walnut trees be planted?

In the middle of March, the seeds were soaked in cold water for 2-3 days, then mixed with wet sand and piled in the sun. High 30~35cm, covered with l0cm thick wet sand, sprinkled once a day to keep moist, covered with grass curtain or film for moisturizing and heat preservation at night, and sowed after 10-15 days of cracking and whitening. Select once a day, sow in batches and sow in sufficient moisture when sowing.

The planting time is before and after sprouting in late March, and the survival rate of 1-and 2-year-old seedlings is high. After planting, we should pour water thoroughly, strengthen the management of water and fertilizer, often loosen the soil and weed, pay attention to drainage in the rainy season, and pay attention to the prevention and control of diseases and insect pests from June to July. Pruning should be carried out during the growing period, and the dry height should be kept above 3m. Do not prune after falling leaves, otherwise it is easy to cause bleeding and affect the growth of trees. The planting time of deciduous fruit trees is generally winter, and that of evergreen fruit trees is spring. When planting, it is necessary to standardize and achieve horizontal and vertical rows. When planting, the grafting interface should be exposed on the ground, the root system should be extended, and then cultivate the soil, stabilize, irrigate, and then seal the hole after water infiltration, in order to conserve water.

Second, how many years can walnut trees hang fruit?

The fruit hanging of walnut is also related to varieties and cultivation techniques. Early bearing walnut and grafted walnut can bear fruit in 2-3 years, while late bearing walnut and seed walnut take 8-10 years to bear fruit.

Third, the efficacy and function of walnut

Walnut kernel is rich in nutrients, including 15g / 100g protein, 60g / 100g fat, 10g carbohydrate, calcium, phosphorus, iron and other trace elements and minerals, as well as carotene, riboflavin and other vitamins. The main component of fat in walnut is linoleic glycerol, which not only does not increase cholesterol, but also reduces intestinal absorption of cholesterol. Therefore, it can be used as a tonic for patients with hypertension and arteriosclerosis. In addition, these oils can also supply the brain matrix needs. The trace elements zinc and manganese contained in walnut are important components of the pituitary gland. Often eating is beneficial to the nutritional supplement of the brain and has the effect of tonifying the brain and promoting intelligence.

Walnut is not only the best brain food, but also a cure for neurasthenia. Elderly people with symptoms such as dizziness, insomnia, palpitations, forgetfulness, loss of appetite, sore waist and knees, and general weakness can play a nourishing and therapeutic role by eating 1 or 2 walnut kernels every morning and evening.

Walnut kernel also has a high medical effect on other diseases, such as it has the functions of tonifying qi and nourishing blood, moistening dryness and resolving phlegm, warming lung and moistening intestines, disinfection of swelling and so on. In recent years, scientific research has also proved that walnut branches can improve the symptoms of tumors. Fresh walnut branches and eggs are boiled with water, and then eat eggs, which can be used to prevent cervical cancer and various cancers.