The cultivation of walnut seedlings, how to plant walnut seedlings

About walnut grafting technology, management technology, and cultivation technology, I will tell you that you have an address.

It's all about it.

1. Preparation: Dig the planting pit before planting, and the soil in the pit must be shoveled fine, which is the key to ensuring survival. Seedlings should not be planted too deep, the root neck of the seedling should be slightly higher than the ground, and the grafting film should be delineated.

2. Planting: When planting, the root system will be stretched and straightened out to make it in a natural state, and then pressed into the fine soil in layers, and filled all the holes with fine soil, so that the soil and the root system are in close contact, so as to facilitate the root system to absorb nutrients and water from the soil, and finally use the foot to make the base solid, and straighten and straighten the seedling stem.

3. Watering the root water: After the seedlings are planted, build a small ridge around the seedling stem, then water, pour the water in the ridge, water enough, and water thoroughly until the soil can no longer absorb water.

4. Mulching: After watering enough rooting water, sprinkle fine soil around the seedling stem, and finally cover the tree tray with a diameter of 1 meter with mulch film or weeds. 5. Bracket: After the big tree is planted, it must be fixed with a tripod to prevent the wind from blowing.

6. Management after planting: If the weather is dry after the seedlings are planted, they should be watered once every 15 days or so, and the new shoots can be fertilized only when they are 2 3 cm after germination in the early spring of the following year, and the fertilization principle of diligent and thin application is used for fertilizer and water management.

Seedlings can be raised from seeds.

When the seeds are raised, the seeds should be germinated in advance, because the seed skin of walnuts is very thick, the germination time is relatively longer, but the germination can save the time of seedlings. The germination method can be used to promote germination with sand, or directly with water for germination. The seed sand reservoir is more than 60 days, and it is taken out and sown at the beginning of spring.

Soaking seeds to promote germination and slow slipping: When cultivating peach pits, you need to soak the seeds in warm water for 5-7 days. Cultivation soil:

Choose loose and breathable sandy soil, and then spray potassium permanganate for disinfection. Sowing and propagating: Bury the peach pits in the soil and cover them with 6 cm of sandy soil.

Transplanting and planting: Seedlings need to be transplanted into fertile soil when they are 3 cm tall.

1. Soak seeds to promote germination

When cultivating peach pits, you need to collect the fruits in June and August every year, and then clean up all the pulp, and then put the full and pest-free peach pits into clean water and soak them for 5-7 days, so that they can absorb enough water, and you can replace the water once a day to improve the germination rate of peach pits.

2. Cultivation soil

Peach pits are suitable for growing in loose and breathable soil, when planting peach pits, it is necessary to use sandy soil, humus soil and peat soil mixed to make nutrient soil, and then spray potassium permanganate or carbendazim on the soil surface to disinfect and sterilize, and then apply rotten organic fertilizer to the soil.

3. Sowing and propagating

When sowing and propagating peach pits, it is necessary to take the method of sowing liquid denier eggplant, with a width of 10 cm and a depth of 1-2 cm, and then bury the peach pits in the soil, and then cover them with 6 cm of sandy soil, and water them 1-2 times every week to keep the soil moist and promote the rapid emergence of peach pits.

4. Transplanting and colonization

When transplanting peach pits, it is necessary to plant when the seedling height is 3 cm, which can provide it with backlight and sunny and convenient land for drainage and irrigation, and need to apply phosphorus and potassium fertilizer or superphosphate at the flowering and fruiting stage of peach trees to promote its flower bud differentiation and increase the number of fruits of plants.

1.Mature trees (30-50 years old) with robust growth, no diseases and pests, and full kernels were selected as the mother trees.

2.The nursery land should be selected in a place with flat terrain, fertile soil, loose soil, leeward and sunny conditions, and irrigation conditions.

3.Autumn seeds can be sown without any treatment. When sowing in spring, soaking should be carried out before sowing to ensure germination.

Seed treatment should be carried out before sowing to ensure germination, and the usual method is cold invasion and sun exposure. The cold invasion and sun drying method is to soak the seeds for 7-10 days, change the water once a day, so that the seeds absorb water and expand, wait for a small number of seed cracks, and expose them to the cement ground after fishing, and most of them can be sown after cracking. It is generally conducted in late March and early April.

Choose sandy loam or loam soil with good water conservancy conditions, good drainage, loose and fertile soil; Select seeds that are picked late, have full kernels, whitish color, and uniform size; Choose a good planting time; Sow seeds with the correct sowing method.

Choose trees that are free of pests and diseases, grow robust and full as the mother tree, and choose a place with fertile soil, good drainage and loose soil for planting.

You should manage your seedlings frequently so that they can grow well.

Seed propagation Select excellent varieties with early fruiting, high and stable yield, strong adaptability, high kernel yield and high oil content as the mother tree. When the green skin of the fruit is half cracked, such seeds have a high germination rate. Seeds sown in autumn do not need to be treated, and those sown in spring must soak or store in layers before sowing.

Soaking seeds can be soaked in warm water (50 55) for 12 to 24 hours to kill the germs attached to the seeds, and the seedlings can emerge early. Sand storage can be dug 1 meter square pit, with a moisture content of 60 wet sand first spread a layer, put a layer of walnut seeds, then spread a layer of sand, put a layer of seeds, and so on. It is then covered with straw or wheat straw, and finally closed with mud to form a backbone.

When most of the seeds swell into the cracks, they can be sown. In the nursery or in the mountains, the film should be covered first, and when the ground temperature rises to 10 12, it should be directly sown in the hole, and 2 3 seeds should be placed in each hole. Seedbed seedling raising or direct seedling must pay attention to the way the seed is placed, generally the suture line of the seed is perpendicular to the ground, and the tip of the seed is best to one side.

grafting rootstock with walnut, wild walnut, etc.; Scions can be selected for 1 2-year-old branches. 1.Grafting period Walnut grafting is generally carried out after germination to leaf development stage, and bud grafting is suitable for the vigorous growth period of new shoots.

2.Grafting method Grafting mostly uses splitting, cutting and subcutaneous grafting; Bud grafting is more used in square budding and T-shaped budding, so I will not introduce it in detail here, mainly talking about the precautions in grafting. Actual production experience proves that the survival rate of walnut grafting is not high, and the main reasons are:

Scions and rootstocks contain tannin substances, which are easily oxidized to form a black-brown separating layer when exposed to air, which hinders the communication of scion and rootstock cell substances. The branches are thick and curved, the pith is large, the leaf scars are prominent, the bud is difficult to take, and the vascular bundles in the buds are easy to detach, which also causes difficulties for grafting. In order to improve the survival rate of walnut grafting, the following problems should be paid attention to: (1) Correct selection of grafting period and method, speed up grafting operation, and smooth cutting surface.

2) 2 3 days before grafting, cut the rootstock, and then graft after the wound flow out, or open the water outlet under the grafting site to cut off the wound flow and rise. (3) Choose the thick branches and small pith as the scion, and increase the cutting surface of the branch scion and the bud piece of bud grafting. (4) Seal wax for grafting scion and preservation, pay attention to bandaging after grafting, and apply wax or plastic sheeting; The buds are close to the rootstock, and the wound should have a certain humidity to ensure survival.

I'll just talk about my marriage.

That's the kind of technology that you use.

It is still necessary to start from the grafting method, walnut grafting is divided into outdoor and indoor grafting.

Outdoor grafting is generally unstable. Indoor grafting can improve survival. Indoor grafting is divided into seedling anvil grafting and seedling anvil grafting.

The advantage of the seedling anvil grafting in the indoor grafting I use is that the survival is high. The disadvantage is that the process is complex, the cost is high, the ground temperature can be controlled, the technical requirements are high, the person who buys can see the obvious grafting traces, and the advantage of seedling anvil grafting is that the survival is high. The cost is lower than that of seedling rootstock grafting (about 1 yuan lower per plant).

The seedling cycle is short. The technical requirements are higher, and now they are practicing their skills. Let's talk about how to graft, first of all, the rootstock (that is, the actual walnut seedlings) is relatively simple, not to mention, it can be used in one to two years, and the cost is about 2 yuan.

The dwarf anvil has been used before, and the cost is about yuan, because the A-grade seedling rate is low, and now it is useless. The next step is to collect Huihui, which should be stored in autumn in the north and used in spring, and in the south in early spring. The first is to dig up the rootstock in the field, and around March 10th, the rootstock and Huihui will be awakened.

After three days, the grafting begins, first of all, the rootstock in the ground is dug out, the grafting method is the double tongue grafting method, and the temperature is 25-30 degrees Celsius for 15-20 days to heal after grafting. The seedlings are then allowed to germinate and acclimatize within the seedbed. In early May or late April, depending on the weather, it will be transferred in a timely manner.

In autumn, about 50% of the seedlings are grafted and about 50cm tall.