How long can grape seedlings be fertilized and what fertilizer is good?

Before grape planting, fertilize grape saplings to cultivate the goal of early formation and high yield, before the planting, it is recommended to dig the planting ditch, which can be reclaimed mechanically, and the general planting ditch is recommended to apply organic fertilizer, calcium, magnesium and phosphorus fertilizer, urea and potassium sulfate in the planting ditch.

etc., can supplement zinc sulfate and other trace elements.

Fertilizer can be carried out years ago so that the nutrients are fully utilized.

Seedling fertilization is generally not released immediately after planting, about 6 leaves to start fertilization, can be fertilized twice a month, can be flushed with high nitrogen water-soluble fertilizer, can also apply urea, urea is recommended to be appropriate in concentration, if the early leaf yellow seedling stiff, it is recommended to drench the sea elf root application type 1-2 times, when the later growth is faster, you can use compound fertilizer.

Mainly to fertilize, if the nutrition is too vigorous, you need to reduce the number of fertilization, 9-10 months can be applied autumn fertilizer, autumn fertilizer can be rotten farmhouse fertilizer, you can also add balanced compound fertilizer, etc., according to the soil mineral nutrition, appropriate addition of boron fertilizer, magnesium and zinc fertilizer, etc., when the nutrients are excessive, reduce the nitrogen fertilizer in the autumn fertilizer.

Fertilization precautions The application of organic fertilizer must be rotten, chicken manure, cow manure and the like must be composted for 2-3 months before it can be used, not too much fertilizer at one time, it is recommended to apply thin and diligent, pay attention to prevent frost damage and flood disasters.

If the root system is bad, repair it in time.

Cultivating roots with phosphate fertilizer and humic acid.

The main purpose is to cultivate seedling roots, the root system is good to absorb the fertilizer is not wasted, it is recommended to use water-soluble fertilizer and liquid fertilizer.

Control soil moisture, although dry roots and wet leaves, too much soil moisture will cause the root system to be blistered, too little soil moisture, too dry soil is also harmful to the growth of the root system, to Clen.

For example, the Wangchang tree type can grow very quickly under white water.

After the root system is developed, nitrogen fertilizer can be used appropriately to raise seedlings, but it is not easy to be too much, too much leads to the vine flourishing flower bud differentiation is not good, the leaves are too large and the disease resistance is poor, pay attention to the use of a small amount of calcium, magnesium and zinc fertilizer and other trace elements, "note that calcium and magnesium fertilizer can not be used together with phosphate fertilizer will produce a chemical reaction".

Generally, fertilization can be applied half a month after the seedlings grow. It is best to apply nitrogen or potassium fertilizers. To promote the growth of plant rhizomes, the concentration of fertilizer should not be too high, and do not water for the time being after fertilization.

The management of seedlings is mainly based on cultivating roots in the early stage, raising seedlings in the middle stage, and flower bud differentiation in the later stage. The use of trace elements can be met by foliar spraying, and drip irrigation is used after fruit hanging.

For about 15 days, it is necessary to use a small amount of fertilizer to avoid burning the seedlings too much at one time. Fermented chicken manure water, or compound fertilizer, organic fertilizer can be.

Germination fertilizer: about February to apply a germination fertilizer, germination fertilizer is mainly nitrogen fertilizer, can use Yanwo water-soluble fertilizer nitrogen fertilizer, using furrow application or hole application.

Pre-flower: In late April, apply a pre-flower. Pre-flowering fertilizer, mainly nitrogen fertilizer and phosphorus fertilizer, with Yanwo water-soluble fertilizer high nitrogen and high phosphorus type, need to be watered immediately after fertilization.

Strong fruit fertilizer: Yanwo high potassium water-soluble fertilizer can be used, and furrow application or hole application is still used.

The growth period of young fruits is the peak fertilizer demand of grapes in a year, and fertilization at this time not only promotes the growth of young fruits, but also has a good effect on the growth of branches and leaves of the year.

Coloring fertilizer: also known as ripening fertilizer.

Post-harvest fertilizer: After the fruit is harvested, due to the large nutrient consumption of the tree, fertilization is required to ease the tree and delay defoliation.

In recent years, with the improvement of grape fertilizer and water management technology, irrigation fertilization has been gradually adopted to replace traditional fertilization methods in production.

Top dressing begins in mid to late April, and fertilization is carried out using drip irrigation. Nitrogen, phosphorus and potassium can be applied per mu.

Water-soluble compound fertilizer with content of 15:15:15.

2kg, which can be applied at the same time with Yanwo water-soluble fertilizer and water fertilizer, once a week, during which the soil is kept moist.

At the same time, during the grape growing season, according to the grape's nutrient requirements, topdressing can be carried out outside the roots. If the grapes are sprayed with foliar fertilizer after fruit set, they can continue to supplement nutrients, and Yanwo potassium dihydrogen phosphate can be used.

to replenish the tree's need for phosphorus and potassium. 7-10 days after fruit harvest, it helps the plant to regulate growth, promote nutrient absorption, and restore the tree's vigor as soon as possible.

Because grapes are fertilizer-loving plants, they are fattening, grow strong, and bear many fruits. In this season, thin fertilizer is generally applied frequently to promote fruit ripening. You can fertilize this method by referring to this:

According to the growth results and fertilizer needs of mature grapes, more nitrogen fertilizer should be applied in the early stage and more phosphorus fertilizer in the later stage, at least 4 times throughout the year. The first application of germination fertilizer, after the grapes are unearthed, they are mainly applied to human manure, ammonium sulfate or ammonium bicarbonate and other fast-acting fertilizers to promote the germination of bud eyes. The second application of puffing fertilizer, after grape fruit set, in mid to late July, when the new shoots grow slowly, apply a small amount of human manure or apply kilograms of urea per plant, so that the young fruits expand rapidly.

The third application of ripening fertilizer, around the beginning of autumn, before the fruit ripens, continue to apply human manure and soil miscellaneous fertilizer. Foliar fertilizer spraying is also required in combination with spraying to promote fruit ripening, improve fruit quality and sugar content. After the grape harvest, the mid-early maturing varieties are in mid-to-late August or early September, and the late-maturing varieties are in late September or early October, and continue to apply circle fertilizer, human manure, soil miscellaneous fertilizer, plant ash, superphosphate, etc., to promote the maturity of branches and buds, and create conditions for next year's bumper yield.

The basal fertilizer is usually applied immediately after the grape harvest with well-rotted organic fertilizer (manure, compost, etc.), and some fast-acting fertilizers such as ammonium nitrate, urea and superphosphate, potassium sulfate, etc. Ditch at 50 cm away from the plant, 40 cm wide and 50 cm deep, and apply 25-50 kg of rotting organic fertilizer, 250 grams of superphosphate and 150 grams of urea per plant.

It is best to use 3000kg to 5000kg of fertilizer for one acre of land. It is best to use sheep manure. It is very rich in protein.

Do not apply too much fertilizer during the seedling period, generally about 1 5 catties is very suitable, and also apply well-rotted farmhouse fertilizer to prevent root burning.

Fertilize in small amounts. Because too much fertilization can easily cause its roots to be burned.

Germination fertilizer. Generally, it is applied before the grape germination, and this time nitrogen fertilizer (water-soluble fertilizer with a large number of elements is appropriate) is mainly used to promote neat germination, thick leaves, and large and strong inflorescences. If the tree is too vigorous and the spring is not very dry, the fertilizer can be omitted this time to avoid new shoots.

2. Bulging fat. After the grapes have set fruit, that is, the fruit is as big as a mung bean, and at the end of the day it is as big as a soybean. The fertilizer is mainly nitrogen, and phosphorus and potassium fertilizers are also applied.

High-nitrogen compound fertilizer can be applied, ordinary three-element compound fertilizer can also be applied, and nitrogen fertilizer such as urea can be added as appropriate. The amount of fertilizer should be large, which can account for about 50% of the amount of chemical fertilizer applied throughout the year.

3. Ripening fertilizer. Split into two sessions. 20-30 days before ripening, a high-potassium water-soluble fertilizer is applied, and a second fertilizer is applied when the berries are starting to soften and have not yet colored.

This fertilization is important. After applying bulging fertilizer, many fruit farmers no longer apply ripening fertilizer, or cause fruit color change (commonly known as water jar disease) or due to lack of fertilizer, grapes have poor resistance, are prone to disease, and have a good yield but not a bumper harvest. Or the coloring is poor, the sugar content is not high, it can't be sold at a good price, and so on.

It can be directly applied to functional fertilizers, and a large number of elements of water-soluble fertilizers turn color (high phosphorus and high potassium types are recommended, and contain trace elements boron and zinc).

4. "Confinement fat". It means that after the grape is harvested, a fertilizer is applied as soon as possible, usually 15 kg of water-soluble fertilizer (high nitrogen type) with a large number of elements, which is not only used to restore the tree's potential, but also to promote flower bud differentiation, laying the foundation for a bumper yield in the next year.

5. Overwintering fertilizer. Traditionally, the grapes have been applied during the dormant period. In recent years, it has been recommended to apply it monthly, after the grape harvest and during the growth of green leaves.

At this time, it is the second peak of grape root growth, which can promote the growth of a large number of fibrous roots in grapes, so as to strengthen the tree and be more conducive to wintering. This fertilizer is organic fertilizer (if you use farmhouse fertilizer, please be careful to rot!) ) as the main one, and at the same time apply calcium fertilizer, or add a small amount of three elements.

1. The fertilization period of grapes should be based on the needs of grape growth and development. According to the different stages of the development of the grape growth cycle, the specific period of fertilization in a year is: the application of basal fertilizer is generally carried out before the grape root system is about to enter the second growth high selling code peak, the northern region is carried out in September and October of each year, and the southern region is carried out in October and November, at this time the fertilization is conducive to the injured root system to promote new roots and increase the storage of tree nutrients.

Basal fertilization should ideally be completed by early October in the north and in late November in the south. If there are other reasons for not applying basal fertilizer in autumn, you can sprinkle fertilizer between the grape rows before budding in the spring of the following year, and use a rotary tiller to turn the fertilizer into the soil shallowly, and irrigate it once to permeate the water.

2. Top dressing is carried out during the grape growth period to promote plant growth and fruit development. Top dressing is mainly based on fast-acting chemical fertilizers, such as bicarbonate, superphosphate, potassium sulfate, etc. Top dressing method:

Dig a shallow ditch of 10 to 15 cm from the vines at a distance of 50 to 60 cm from the vines, spread fertilizer evenly in the ditch, and fill the ditch. The fertilization period, type and quantity of top dressing should be applied in advance according to the growth and development process of grapes in a year and the demand for nutrient types. In general, top dressing mainly includes the following types.

The fertilization time of the non-buried soil cold-proof area is half a month before germination, and the buried soil cold-proof area is mostly carried out after the excavation and shelf, and the soil is furrowed. This topdressing is mainly nitrogen fertilizer. When topdressing, be careful not to touch the branches, to the rabbit to cause too much wound flow, after the top dressing is completed to irrigate immediately.

Generally, 50 kg of dihinge compound fertilizer and 40 kg of potassium sulfate are applied every 667 square meters.

3. 7 to 10 days before grape flowering, when the inflorescence begins to elongate, apply pre-flowering fertilizer to further promote the development of the inflorescence and improve the fruit setting rate. Usually 30 kg of dihinge compound fertilizer and 30 kg of potassium sulfate are applied per 667 square meters. If the soil is fertile and watery and the tree is strong, top dressing can be avoided at this stage.

4. After flowering, when the young fruit soybeans are old, the top dressing should be applied with nitrogen, phosphorus and potassium, especially the application of phosphorus and potassium fertilizer. 50 kg of ammonium bicarbonate, 30 kg of superphosphate and 30 kg of potassium sulfate were applied per 667 square meters.

5. After the fruit is sealed and before veraison, potassium fertilizer is the main fertilization at this stage, which improves the coloring rate and sugar content of the fruit and promotes the normal aging of branches. 40 kg of urea and 30 kg of potassium sulfate per 667 square meters. For vineyards with weak trees or high tolerance yields, urea can be increased to 60 kg per 667 m² to prevent wilting or veraison.