When can walnuts be planted? Where is suitable for growing walnuts in our country? How to plant high yield?

Walnut is rich in nutrition and has the effects of traditional Chinese medicine, such as "tonifying qi and nourishing blood, moistening dryness and resolving phlegm, warming lung and moistening intestines". It is one of the four largest nuts in the world and the market is very broad. So when can walnuts be planted? Where is suitable for growing walnuts in our country? How to plant high yield?

1. How many months can walnuts be planted

Sowing can be in autumn or spring. Here, we take spring sowing in mid-March in Baoding, Hebei Province as an example. Soak the seeds in clean water for 4 to 6 days before sowing. When the seed shell is cracked and exposed, it can be used to sow seeds.

On the flat border surface, sow the seed ditch with a row spacing of 40-50 cm, with a depth of about 15 cm. The method of spot sowing is used for sowing. When sowing, we should pay attention to make the suture of the seed parallel to the sowing ditch, the white end is the root of the future seedling, and this end should be downward when sowing. The best sowing depth is that the upper end of the seed is 3 to 5 centimeters from the surface, and the distance between plants is 10 to 15 centimeters. Cover the soil after sowing and rake the ground flat. In order to ensure the emergence of seedlings, water should be watered after sowing.

It began to sprout and unearthed 15-20 days after sowing, and all the seedlings emerged about 30 days after sowing. In order to promote the growth of seedlings, the management of water and fertilizer should be strengthened. Topdressing is mainly based on nitrogen fertilizer, such as urea, applying 10-15 kg per mu. Irrigate after topdressing. The amount of irrigation is based on the standard of watering.

2. Where is suitable for growing walnuts in our country

Northwest China, North China, Qinba Mountains, Jinsha River Basin and West Sichuan Plateau are all very suitable for growing walnuts, especially in Northwest China.

China is one of the places of origin of walnut, and walnut has been cultivated for more than 2000 years. At present, it is cultivated in all provinces, municipalities and autonomous regions of the country except Heilongjiang, Shanghai, Guangdong and Hainan.

Third, how to plant walnut with the highest yield

Breeding and popularizing excellent varieties and scientific cultivation and management are the best ways, and it is also the general trend of walnut development in the future.

1. Garden site selection

The garden requires the choice of leeward and sunny hilly sloping land, flat land or ditch flat land with good drainage. The soil quality is suitable for loam and sandy loam with good water retention and air permeability and pH value of 7-7.5. Avoid planting walnuts on the soil where willow, poplar and locust trees have grown to prevent root rot.

two。 Planting method

Before planting, the topsoil mixed with fertilizer should be filled into the pit, and then the seedlings should be put into the pit to stretch the roots while filling the soil. Keep the trunk of the seedling vertical. Finally, the rhizome is about 5 cm above the ground, and the soil is 5-10 cm higher than the original ground. Then fully irrigate the water and seal it with soil after the water seeps. Finally, the new high-fat film was sprayed to preserve soil moisture and increase temperature and improve the survival rate of seedlings.

3. Post-planting management

(1) check survival and replanting. After bud development in spring, the situation of planted seedlings should be checked in time, the same variety of seedlings should be replanted to the unsurvived plants in time, and plant electronic fertilizer should be used to make use of the principle of high-energy electrons and plant electronic polarity induction from photosynthesis, improve the level of cell division, molecular synthesis and nutrition matching digestion, accelerate metabolic frequency, and activate plant nutrition dredging system to produce transcendental fertilizer effect.

(2) the young trees are fixed and dry. For the young trees that reach the fixed stem height, they should be dried in time after sprouting. The dry height of early-bearing walnut is 1-1.2 m, and that of late-bearing walnut is 1.2-1.5 m. After drying, the tree body can be smeared with fruit tree brush body spirit, which can make the waist pole of the tree with more fruit hard and increase its load (waist strength). The flow of nutrients can be adjusted. Prevent native diseases and pests from growing on trees, cut off the supply and transportation lines of diseases and insect pests on trees, and deplete the source of disease.

(3) fertilization and irrigation. After planting, it should be irrigated in time according to the dry and wet condition of the soil. In spring and summer, appropriate amount of chemical fertilizer can be applied in combination with irrigation, mainly nitrogen fertilizer in the early stage, phosphorus and potassium fertilizer in the later stage, and light film nutrient film fertilizer should be used after fertilization. to enhance the capacity of photosynthesis nutrients and chlorophyll, advanced environment-friendly plants to increase fertilizer, yield, color, leaf thickening, stem strong compound film. It can help plants absorb a lot of light fertilizer, light energy, light, compatible conventional fertilizers and nutrients to the limit of plant growth and development. One application is beneficial for the whole year.

(4) using intelligent control to promote flower king to intelligently control the growth and nutrition matching of fruit trees, fill the vacuum of missing nutrient elements, adjust the balance of the number of annual flowers (increasing flowers in young years, decreasing flower control in big years), inhibit shoot growth and force excess return to fruit, improve the level of fruit expansion. The utility model has the advantages of simple and safe use, no damage to the tree potential, low input cost in the orchard and no pollution.

(5) germ prevention. Plant cellular immune factors can be used to improve plant stress resistance and make virus DNA break and apoptosis. Strong immune function, induce interferon and active interleukin, inhibit residual virus replication, and promote plant positive energy ecological growth. The mechanism of host plant disease resistance and the principle of pathogen toxicity variation were used to control the reproduction of plant physiological diseases and infectious diseases.