Planting methods and management of walnut trees

1, walnut is not strict with environmental conditions. Generally, the altitude is 500- 1500m, the annual average temperature is 9- 16℃, and the annual rainfall is 800- 1200mm. Sandy loam or calcareous soil with pH value of 6.5-7.5 can be planted in places with deep soil layer, loose and fertile soil and good drainage.

2, the soil is too sticky, too wet, and the soil with poor drainage is not suitable for planting. Walnut is a light-loving fruit tree, which needs sufficient light. It is best to choose the south slope to build a garden in mountainous areas.

3. Soil preparation is an important link to improve the survival rate and growth of walnut cultivation. Generally, the land preparation time is carried out in the first half year of afforestation. The land preparation method can be selected according to the site conditions of walnut orchard: generally, the slope is below 10 degree or flat land, and comprehensive land preparation is adopted.

4. According to the row spacing of planting plants, with the trend of slope, build an anti-slope terrace with a slope greater than 20 degrees, and prepare the soil with a fish scale pit. It is to build a small platform at the planting point, and build a ridge with stones below. At the same time, according to the planting density, it generally takes 1 m2 to dig a planting pit in the whole garden, and the soil is put in layers when digging the pit.

5. Young walnut trees have large pith, high water content and poor cold resistance, and are vulnerable to freezing injury in cold and arid areas, resulting in dry branches. Therefore, in order to ensure the normal growth of young walnut trees, it is very important to prevent cold in winter.

6. Cultivating a mound within 30 cm of the root of walnut seedlings can effectively increase the thickness of the protective layer of the root soil, just like adding an extra layer of cotton-padded clothes to it, thus achieving the effect of cold protection.

7. Painting the trunk of seedlings white can effectively alleviate the temperature difference between the yin and yang sides of the trunk, and the cold-proof effect is very good. The formula of common whitening agent: salt, quicklime and clear water are used in the ratio of 1: 12: 30, and an appropriate amount of adhesive can be added during preparation to increase the smearing effect.

Second, planting management:

1, before and after germination in late March, the survival rate of 1~2-year-old seedlings is high. After sowing, water and fertilizer management should be strengthened, soil should be loosened frequently to weed, drainage should be paid attention to in rainy season, and pest control should be paid attention to in June and July.

2. Pruning should be carried out during the growth period, and the dry height should be kept above 3m. Don't prune the fallen leaves, otherwise it will easily cause bleeding and affect the growth of trees.

3. Planting time is generally suitable for deciduous fruit trees in winter and evergreen fruit trees in spring. When planting, it should be standardized and row by row.

4. When planting, the joint should be exposed on the ground, the root system should be elongated, then the soil should be cultivated, practical, irrigated, and the hole should be sealed after water seepage to preserve water.

5. Walnut trees with high trees have long life, and trees with hundreds of years can maintain high yield. This tree is very tall and flourishing. The crown diameter of a big walnut tree can reach more than10m, and it covers an area of100 ~ 200m2.

3. Walnut trees can be used as shelter forests for road greening; Because its wood is tough and elastic, it is also the first-class material used in industry. Walnut shells can be processed into works of art, and walnuts, almonds, cashews and hazelnuts are called "four big nuts" in the international market.

4. Walnut trees have different trunks, and their height is generally 2~ 10 meters, and the highest may be more than ten meters; Wide crown; Bark is grayish green when young, grayish white when old, and shallow vertically; Branchlets glabrous, shiny, peltate glands, grayish green, and later brownish.

Extended data:

1. Walnut has majestic crown, white trunk, lush foliage and lush green shade, which can be used for road greening and protection in gardens.

2. Walnut is tough, elastic, delicate in texture and beautiful in color, commonly known as fake beech, and it is a superior material used in military and furniture industries.

3. Walnut shells can be processed into works of art, which are beautiful, and the shell is hard and not easy to deteriorate.

4.8. In September, the seeds of walnuts are harvested, peeled, dried and stored. Soak the seeds in cold water for 2~3 days in mid-March, take them out, mix them with wet sand, and pile them in the sunny place. It is 30 ~ 35cm high and covered with wet sand with a thickness of10cm. Sprinkle water 1 time every day to keep it moist, and cover it with straw curtain or film at night to keep it moist and warm. 10~ 15 days after the shell cracks, you can sow. Choose 1 time every day, sow in batches, and the sowing water is sufficient.

References:

Baidu encyclopedia-walnut tree