What fertilizer is used for top dressing after shallot planting?

Shallots. After planting, nitrogen fertilizer should be the main fertilizer, with an appropriate amount of phosphorus and potassium fertilizer.

Spring sowing and summer harvest of shallots, in the management of fertilizer and water, to promote to the end, after the seedlings begin to grow vigorously, generally every 20 days or so, apply 1 time Bika high nitrogen water-soluble fertilizer, with the application of an appropriate amount of phosphorus, potassium fertilizer, ammonium sulfate can be applied per mu each time.

About 15 kg.

For the green onions sown in autumn and overwintering, the fertilizer and water should be properly controlled before the green onion seedlings are wintered, so as to prevent the seedlings from being too large before winter and a large number of early sprouts occur in spring.

After the green onion seedlings return to green, they should be watered back to green water in time, and the green fertilizer should be applied to promote the early growth of the seedlings, and urea can be applied per mu.

15 kg or other nitrogen fertilizers with equivalent nutrients.

After that, about 15 kg of ammonium sulfate per mu should be applied every 20 days, combined with top dressing, and fully watered to strengthen vegetative growth, prevent or delay sprouting, and improve the yield of shallots.

Regarding the fertilization of shallots, the bottom fertilizer is best to use nitrogen, phosphorus and potassium fertilizer with organic fertilizer and medium and trace element fertilizer together, and phosphorus fertilizer needs to be supplemented at the seedling stage, and a certain amount of nitrogen and potassium fertilizer is required at different growth stages.

In short, the fertilizer of shallots is still based on nitrogen, phosphorus and potassium fertilizer, which can be applied Wandibao 16-13-16 pure potassium sulfate, using imported potash fertilizer as raw material, fully water-soluble, no residue, fast crop absorption, long fertilizer effect, vigorous plant growth, high yield, adding a large number of microelements, according to the nutritional elements required for crop growth design formula, tailor-made, top dressing can make the fruit colorful, fast fruit expansion, fruit shape upright, fruity flavor.

Compound fertilizer and urea can be used for top dressing of shallots, but compound fertilizer is generally appropriate, because urea contains biuret, which is easy to lead to seedling burning if used improperly, while compound fertilizer is safer and more comprehensive in nutrients. The growth period of green onion seedlings is usually 2-3 months, transplanting can be topdressing for about 1 month, 10 kg of urea and 20 kg of compound fertilizer can be applied per mu during the peak tillering period, and 30 kg of compound fertilizer can be applied per mu after the harvest of the first green onion leaves.

After planting, shallots should be mainly nitrogen fertilizer, with an appropriate amount of phosphorus and potassium fertilizer. to enhance vegetative growth and increase shallot yield.

Top dressing can be divided into several times, but it is best to be able to organic fertilizer, that is to say, the bottom fertilizer can choose organic fertilizer, so it will be better, bury these organic fertilizers, about 15 cm, then these green onions can grow very well. Organic fertilizer is generally chosen to be composted before planting, and burying the ashes of chicken manure, cow manure, pig manure, etc., or some burning branches and weeds, can help the absorption of these green onions. In fact, this is also the first fertilization, if you plant green onions, you can have more than 4,000 catties of organic fertilizer per mu, at least you can save a lot of chemical fertilizer.

When the green onions have sprouts, they should be fertilized after a week or so. The implementation of fertilizer should also be based on the performance of the green onion, if the green onion grows particularly lush and green, and there is no lack of nutrition, then it can be appropriately postponed, after all, there is organic fertilizer as the foundation, basically able to meet the growth needs of green onions, for some phosphate fertilizer, potassium fertilizer can be appropriately supplemented. <>

In the middle of the green onion, it should be topdressed, because it will be sold later, and this fertilizer must be supplemented in time in the rapid growth stage, which can be used urea or other compound fertilizers. If you choose urea, each mu is about 60 catties, of course, planting green onions generally need a certain amount of plant ash, if there is grass ash that is the best, about an acre needs about 200 catties. <>

It is best to choose water-soluble fertilizer, non-water-soluble fertilizer is easier to irrigate, and it is also very good to spray it directly with water. Of course, some people will choose to top dressing at the autumn equinox, in fact, it doesn't matter if you choose to top dressing in autumn, after all, this period is generally a period of green onion formation, and a lot of nutrients are definitely needed, so timely supplementation can make green onions grow faster and more stably.

Top dressing is the need for field management throughout the whole growth cycle of green onions, and top dressing should be used in small quantities many times, according to different geology, green onions are full.

It is recommended to top dressing once in 7-15 days.

If the geology is hard, you can choose to top dressing once in 15 days, if the geology is soft, you can top dressing once in about 7 days, the shorter the interval, the less fertilizer is used.

Green onion topdressing is divided into the beginning of autumn, after the white dew, after the frost, in these stages to pay attention to the top dressing of green onions, the method of topdressing should be good with water and fertilizer, avoid large water and nitrogen.

In early September, or around May in the spring, the topdressing method of green onions is relatively simple, and it is also relatively easy to breed.

It needs to be determined according to the growth of green onions, and it is definitely necessary to fertilize in the early stage, and top dressing is also needed in the growth period of green onions, so as to ensure the growth of green onions.

Organic fertilizer, high nitrogen, high potassium and low phosphorus prescription fertilizer, fast-acting nitrogen fertilizer, and trace element fertilizer are the best for shallots.

1. Organic fertilizer

Chives should be deeply turned after the harvest of the previous crops, and then sown and transplanted after raking and preparing the land. To apply sufficient base fertilizer, 1500-2000 kg of rotted and decomposed chicken manure and pig manure per mu or 100-150 kg of commercial organic fertilizer per mu or 100-150 kg of cake fertilizer per mu.

High nitrogen, high potassium and low phosphorus prescription fertilizer

Shallots can be covered with mulch film or transplanted in small arch sheds in winter and spring, which can keep warm and promote the balance of nitrogen, phosphorus, potassium and trace elements in the whole seedling needs**, the proportion of nitrogen, phosphorus and potassium absorbed by chives during the whole growth period is about 1::, of which the absorption of potassium is the largest, so chives must be applied to it in the growth period with high nitrogen, high potassium and low phosphorus prescription fertilizer or compound fertilizer.

3. Fast-acting nitrogen fertilizer

When fertilizing chives, we must mainly promote the growth of leaves, and we can use fast-acting nitrogen fertilizer for it, and we can use fast-acting nitrogen fertilizer for spring sowing and summer harvest of chives, generally every 20 days or so.

4. Trace element fertilizer

Trace elements play an important role in the growth process of shallots, and spraying trace element foliar fertilizer on the foliar surface can meet the trace elements required for its growth.

Fertilization points for chives

The amount of nitrogen fertilizer and potassium fertilizer required in the growth process of chives is basically equal, so on the basis of increasing organic fertilizer, the amount of potassium fertilizer should be increased, and the potassium fertilizer applied per mu of chives per quarter shall not be less than 25 kg, and at the same time, due to the mobility of potassium fertilizer, the amount per mu shall not be more than 10 kg each time, in order to promote the normal growth of chives, trace element foliar fertilizer should be sprayed on the foliar surface to meet the needs of trace element fertilizer for the growth and development of chives.

Shallot fertilization: fast-acting nitrogen fertilizer, with the application of appropriate phosphorus and potassium fertilizer.

Generally speaking, it is mainly sown in March and April in spring, and harvested in June and July, and can also be planted in September and October in autumn, and harvested in April and May in the spring of the following year, but it is mainly sown in spring.

1. Watering skills.

When watering shallots, you need to grasp the amount of watering, shallots have the characteristics of drought tolerance and waterlogging tolerance, so the amount of watering should not be too much when watering shallots, and the phenomenon of water accumulation should be avoided, because too much watering is easy to cause the root rot of shallots, which is not conducive to the growth of shallots. When watering shallots, it is recommended that the soil is dry and then watered, and the amount of watering is appropriate, and a large number of irrigation operations can not be taken.

2. Soil selection.

The selection of soil is suitable for loose, fertile, strong drainage and deep soil, and the pH value of the soil is optimal in terms of acidity and alkalinity, and the soil alkalinity is too strong will affect the growth of shallots, so it is not recommended to plant on the soil with too strong alkalinity, or to plant after the acid-alkaline neutralization of the soil.

3. Management methods of fertilization.

From the perspective of the growth cycle of shallots, phosphorus should be supplemented in time at the seedling stage, and fertilization should be mainly supplemented with nitrogen and potassium after entering the growth period, and trace elements should be appropriately supplemented. It should be noted that when supplementing large elements such as nitrogen, phosphorus and potassium for shallots, we must not ignore the supplementation of trace elements, which is the guarantee for the normal growth and development of shallots.

4. Management of planting and harvesting.

Shallots are biennial crops, which can be harvested like leeks, and it is advisable to cut them every other month when harvesting, and the interval is too short to cause shallot malnutrition, which is not conducive to the growth of shallots.

5. Techniques to improve the freshness and tenderness of shallots.

Shallots love the sun, and the longer the sun lasts, the drier the soil, and the stronger and spicier the shallot flavor. Correspondingly, when the light time is short and the moisture is sufficient, the taste of the shallots will be slightly lighter. Therefore, if you want to make the shallots more tender, you can reduce the light time and intensity when the shallots are about to be harvested, and at the same time water properly to keep the shallots hydrated.

According to the fertilizer demand characteristics of shallots, potassium fertilizer is the most, followed by nitrogen, so in planting, reasonable application of potassium fertilizer and nitrogen will grow better.

1: What fertilizer is good for planting green onions?

According to experimental research, every 1000 kg of green onions produced needs to absorb about kilograms of pure nitrogen, phosphorus pentoxide, potassium oxide, and the total absorption is the most potassium, followed by nitrogen, and the least phosphorus. The absorption ratio of nitrogen, phosphorus and potassium is 1::.

Two: green onion fertilization:

On the basis of the application of organic fertilizer, the suitable amount of fertilizer for medium fertility plots is 20 25 kg of pure nitrogen, 6 8 kg of phosphorus pentoxide, 20 30 kg of potassium oxide, equivalent to 40 55 kg of urea, 50 65 kg of calcium phosphate (available phosphorus content 12%), and 35 50kg of potassium chloride (available potassium content 60%) per mu.

Extended Materials. Shallot planting method.

1.Planting time. The habit of shallots likes warm and cool climate, and it is most suitable to grow in the environment of 15 to 25 degrees, and it is generally planted in spring and autumn in North China, and the spring is generally planted before and after Qingming, and the autumn equinox is the most suitable for planting, and the shallots are resistant to severe cold and can survive the winter.

2.Sowing tips. The outer layer of the seeds of shallots is wrapped in something like oil, so the water absorption ability of the seeds is relatively poor, and the seedlings emerge slowly if they are sown directly, and it takes more than 10 days, so it is best to soak the seeds in cold water for 24 to 48 hours before sowing, and the water for soaking the seeds should be more than 10 times that of the seeds, and the water should be changed every 12 hours in the middle, and the seeds should be sown after soaking.

3.Seedling management. The growth of shallots has a characteristic, that is, the early stage is slow, the later stage is fast, after sowing just after the emergence of the shallots are thin and small, and it will be in this state for a long time, so don't be anxious at this time, just water it frequently, let it pass the seedling stage. 

How should shallots be planted to grow fast You only need to master these points The shallots grow upward.

Summary. Hello, glad for your question.

What kind of fertilizer do you ask about after planting shallots?

It would be better to use compound fertilizers. Although the topdressing of shallots in the later stage is mainly to promote the growth of stems and leaves, the use of fast-acting nitrogen fertilizer should be the main one. However, urea contains biuret components, which will lead to seedling burning if used improperly, so it is safer to use compound fertilizer and the nutrients are more comprehensive.

Or, apply about 15 kg of ammonium sulfate per mu every 20 days, and combine top dressing and sufficient watering to strengthen the growth of nutrients, prevent or delay sprouting, and improve the yield of shallots. It is timely to water the green water, apply the green fertilizer, promote the early growth of seedlings, and apply about 15 kg of urea per mu, or other nitrogen equivalent to nutrition.

What fertilizer is used for top dressing after shallot planting?

Hello, glad for your question.

What kind of fertilizer do you ask about after planting shallots?

It would be better to use compound fertilizers. Although the return of shallots to fertilizer in the later stage is mainly to promote the growth of stems and leaves, the use of fast-acting nitrogen fertilizer should be the main thing. However, the urine coarse Shipai Iwahe contains biuret components, which will lead to burning seedlings if used improperly, so it is safer to use compound fertilizer and the nutrients are more comprehensive.

Or, every 20 days, about 15 kg of ammonium sulfate per mu should be applied to the core, slowly widened and combined with top dressing, and fully watered to strengthen the growth of nutrients, prevent or delay sprouting, and improve the yield of shallots. It is timely to water the green water, apply the green fertilizer, promote the early growth of seedlings, and apply about 15 kg of urea per mu, or other nitrogen equivalent to nutrition.

Shallot is one of the common seasoning vegetables in China, it is rich in nutrients, and it is also a traditional Chinese medicine material. In the process of growing shallots, reasonable fertilization is an important factor to ensure their healthy growth and yield. So, what chemical fertilizer is used for top dressing of shallots?

First of all, nitrogen fertilizer needs to be used when topdressing shallots, because nitrogen fertilizer can promote the lush growth and increase the inflorescence of shallots, and provide nutrient guarantee for their later flowering and fruiting. It is recommended to use urea, ammonium nitrate and other nitrogen fertilizers, which are good choices for convenience and effect.

Secondly, when there are pests and wilting phenomena in shallots, potassium dihydrogen phosphate and potassium fertilizer can be used as top dressing fertilizer. Phosphate fertilizer can not only promote the nutrient absorption of shallots, but also enhance its immunity and prevent the occurrence of pests and diseases. Potassium fertilizer can regulate the physiological mechanism of plants and maintain their healthy growth.

To sum up, the topdressing of shallots can be subsidized by nitrogen fertilizer and phosphorus, potassium and chemical fertilizer. Of course, when using chemical fertilizers, we should pay attention to the reasonable dosage, do not overuse and add organic fertilizers in a timely manner to further improve the quality and taste of shallots.