Celery fertilization should be scientific, how to fertilize celery scientifically?

Celery has a shallow root system and weak fertility absorption, which is also this growth characteristic, so it is necessary to apply less and more frequently when fertilizing celery. Because once the amount of fertilizer is too large, it will cause the phenomenon of celery burning roots, and too much fertilizer can not be absorbed and utilized by celery, resulting in waste. Top dressing must be timely.

In order to promote the growth of new roots and leaves, less fast-acting nitrogen fertilizer can be applied to raise seedlings, and 15 20 kg of ammonium sulfate per mu is applied to the ditch.

Celery has strong adaptability to the soil, and grows and develops best in loam soil with rich organic matter and good water and fertilizer retention, and celery's nutrient demand is relatively complete, and the absorption ratio of nitrogen, phosphorus and potassium is about 3:1:4.

During the top dressing period, a small amount of nitrogen fertilizer is used, more phosphorus and potassium fertilizer is applied, in the later stage, in order to prevent the slow growth of celery, you can try foliar fertilizer for top dressing, you can use calcium, magnesium and phosphorus fertilizer can be used for top dressing, you can apply boron fertilizer in an appropriate amount, and in the later stage, in order to prevent celery from showing disease, it can be used within half a month before harvesting.

The number of irrigation is more than the number of top dressing, this stage of top dressing does not need to be applied to farm fertilizer, mainly concentrated on chemical fertilizer, or the same three things, urea, phosphate fertilizer and potassium fertilizer, in the past, some farmers in my hometown will also use some high-efficiency fertilizer, if you want celery to grow well, you have to apply nitrogen fertilizer 2-3 times during the growth period, generally choose ammonium bicarbonate, ammonium sulfate and other nitrogen fertilizers, can not choose urea, the most direct harm is celery bitter, and will lead to slow growth of celery, cellulose increase, The taste deteriorates and the quality deteriorates.

After the celery squatting seedlings are finished, about 10 kg of fertilization is applied per mu to the spring biological flush of the garden. After entering October, it is the period when celery grows very fast, and it is also the period when fertilizer is needed the most, which should be combined with watering, and fertilize about 10-15 kg per mu of spring biological fertilizer. The base fertilizer is deeply turned into the soil 7 to 10 days before planting, and the rake is raked and the furrow surface is opened after whitening.

Top dressing, should be applied diligently, gradually thickened from thin, should use urea and bio-organic foliar fertilizer, do not use nitrate, ammonium nitrogen fertilizer so as not to hurt the roots, reduce yield and quality.

Fertilize the celery as soon as the seeds are sown, and when the celery grows ten centimeters tall, fertilize again, and sprinkle a little fertilizer after each watering.

You can water some fertilizer on celery when it is just planted, then some fertilizer and water when it grows seedlings, and then fertilizer again when it bears fruit.

In fact, you can apply some compound fertilizer to this celery every once in a while, and remember to add more water to make celery grow well.

Organic fertilizers, chemical fertilizers, trace elements and microbial fertilizers, etc. For celery fertilization, you can choose the appropriate fertilizer variety according to the soil texture and the number of years the plot has been planted with vegetables, and choose the appropriate fertilizer variety according to the actual situation of the Qingjia plot. In the process of growing celery, we found that celery is a low-temperature crop, which grows slowly and increases disease when the temperature exceeds 26 degrees.

Heavy crops are severely diseased, and the results of planting celery at different times and applying the same fertilizer can be very different. It is recommended that you consider agricultural control methods, such as adopting a crop rotation method of more than three years, or choosing the crop stubble of the previous year's grass family as a celery planting plot, etc.

When fertilizing, apply 1.3 square meters of rotted and fermented organic fertilizer per mu, choose 20 30 kg per mu of compound fertilizer with low nitrogen, medium phosphorus and high potassium, 200 300 grams of trace element fiber per mu, 200 grams per mu of loose soil essence, and 500 grams of microbial fertilizer. When topdressing, you can choose low nitrogen, low phosphorus, high potassium flush fertilization. Foliar sprays of potassium dihydrogen phosphate and trace elements, etc.

a) Seedling stage. Celery can be seeded or transplanted. Due to the difficulty of seed germination and emergence, the seedling growth is slow, the seedling period is long, and the seedling transplanting is mostly used.

The nursery ground should be turned deep and baked and white. Sprinkle about 25 kg of lime per 100 square meters of seedbed, 30 40 kg of rotting organic fertilizer, and 20 25 kg of compound fertilizer. Then dig 15 cm of shallow soil, mix the fertilizer with the soil thoroughly, and sow the seeds after the rake is finely leveled.

After the emergence of seedlings, according to the weather and seedling growth in time, generally once every 2 3 days, each time must be watered thoroughly, in order to facilitate the growth of roots. About 10 days after emergence, chase urea once. When 3 or 4 true leaves grow, chase the superphosphate solution once, and set the value when the seedling height is 6 10 cm.

2) Before and after colonization. The planting land is about 30 centimeters deep, baked and white, and 40 60 kilograms of lime are removed from each acre of vegetable field, and high furrows are made. Then 3000 kg of decomposed organic fertilizer, 1000 2000 kg of garbage coal ash, 100 kg of compound fertilizer, and 100 kg of borax were applied to the soil as base fertilizer after disinfection and accumulation.

Shake the fertilizer and soil evenly, rake the flat furrow surface, and open a shallow ditch for planting. After the seedlings survive, they began to top dress, once every 4 10 days, mainly with fast-acting nitrogen fertilizer, and the concentration was from low to high. By the time the leaves grow hypertrophied, celery grows luxuriantly.

It is the period of maximum efficiency of nutrients, and more fertilizer and water are needed. In addition to nitrogen fertilizer, it is also necessary to combine potassium fertilizer to make the heart leaves tender and juicy, and the organic matter is fully transported and accumulated. If heart rot is found, foliar sprays are applied with calcium nitrate or calcium chloride.

1. Appropriate application of more nitrogen fertilizer: celery needs a large amount of nitrogen fertilizer during the whole growth period, and the top dressing of celery should be mainly ammonium bicarbonate, so that a small amount of time is done many times, and it is generally necessary to top dressing 2 3 times. However, it should be noted that celery should not be top-applied with urea, because after celery top-dressing urea, the growth will be slowed down, the cellulose will increase, the plant is easy to age, the quality is reduced, and it has a bitter taste when eating, so celery should not be top-applied urea during the whole growth period.

2. Top application of organic fertilizer: Top application of organic fertilizer that has been brewed and fully decomposed to celery can improve the quality of celery. Note that organic fertilizer that is not well decomposed should not be applied as top dressing, so as not to cause burning and rotting roots.

After the application of organic fertilizer, the plant stalks are tender and thick, the fiber is reduced, and the quality and yield are greatly improved.

Depending on the growth and specific conditions, as well as the characteristics of celery, the right fertilizer is determined. Generally, when fertilizing celery, nitrogen fertilizer must be the mainstay. However, potash and phosphate fertilizers should also be applied appropriately.

At this time, it can be based on the growth and development of celery, and each time the top dressing should be grasped about three times, and more nitrogen fertilizer must be applied during the growth period.

According to the growth of celery, if the celery grows relatively small, it means that there is a lack of fertilizer, and more fertilizer should be applied.

In the vegetative growth stage of celery, more fertilizer is required at the seedling stage and later stage of growth, and the specific demand for various nutrients is characterized by nitrogen fertilizer, phosphate fertilizer in the early stage, and potassium fertilizer in the later stage. Nitrogen mainly affects the development of celery shoots, that is, the number of leaves and the length of petioles, nitrogen deficiency, plant aging, petioles are hollow, and nitrogen deficiency reduces celery yield in the later stage. However, if nitrogen is applied excessively during its vigorous growth period, lodging is likely to occur.

It can apply 4000-4500 kg of high-quality manure + 20-25 kg of urea + 10-15 kg of superphosphate + 10-15 kg of potassium sulfate per mu.

It is best to fertilize celery once a month, just use the most common compound fertilizer, and pay attention not to use too much.

Celery fertilization technology:

1 Seedling fertilizer Celery cultivated in protected areas generally has to go through seedling cultivation and then planting. Preparation of nutrient soil.

You can refer to the preparation method of nutrient soil of tomatoes, or you can use 1 2 vegetable garden soil and 1 2 rotten or according to the volume ratio.

After mixing the semi-decomposed compost, it is made into nutrient soil, and superphosphate is mixed with 2 3 by weight. Left 30 days after emergence.

Yes, apply a low-concentration nitrogen fertilizer once as appropriate, and apply 0,2 kg of ammonium sulfate or well-rotted dilute human feces per furrow.

2.Basal fertilizer Due to the shallow root system of celery and the high cultivation density, it is necessary to apply foot fertilizer when preparing the land before planting. Per.

4000 5000 kg of organic fertilizer and 30 35 kg of superphosphate were applied per mu. 25 kg of potassium sulfate, for the deficiency.

Boron soil can be applied with 1 2 kg of borax per mu.

3.Top dressing is generally produced during the seedling slowing period after planting, and the plant grows very slowly when the seedling is slow, in order to promote new roots.

and the growth of leaves, you can apply a seedling fertilizer, 10 kg of ammonium sulfate per mu with water, or 500 of rotted human feces

600 kg. From most of the new leaves to the vigorous growth period of the plant before harvest, the leaf area expands rapidly, the petiole elongates rapidly, the parenchyma in the petiole proliferates, the celery absorbs a large amount of fertilizer, the fertilizer absorption rate is fast, and it is necessary to top dressing in time.

For the first time, 7 9 kg of urea or 15 20 kg of ammonium sulfate and 10 15 kg of potassium sulfate were applied per mu. The first chase.

After half a month of fat, celery enters the vigorous growth period, with small white roots covering the ground, bright green and shiny leaves, and leaves appearing.

Now there are some bulges, then the second top dressing is carried out, and the amount is the same as the first time. Do it for the third time in about 15 days.

Top dressing, the amount of fertilizer is the same as the first time, or the amount of fertilizer is increased or decreased depending on the growth of celery.

The amount of nitrogen fertilizer and potassium fertilizer should not be too much each application, and the concentration of nitrogen and potassium in the soil is too high will affect the absorption of boron and calcium, causing the young tissues of celery heart leaves to turn brown and appear dry edges, and die in severe cases.

It is more severe when the ground temperature is low. Therefore, it is necessary to control the amount of nitrogen fertilizer and potassium fertilizer, increase the application of boron fertilizer and calcium fertilizer, and maintain.

Moisten the soil and avoid the soil temperature being too low. When the plant is boron deficient, it is also prone to stem fissures, and stem fissures mostly appear in the outer leaf petioles.

of the inside. Boron deficiency occurs during the development of the heart lobe, and the inner tissues turn brown and crack. Foliar sprays.

An aqueous solution of borax of 0 5 can avoid the occurrence of stem cracking to a certain extent.

When applying chemical fertilizer, it should be sprinkled after the dew has dissipated at noon, and the fertilizer that fell on the leaves should be swept away with a new broom.

Fertilize and irrigate at the same time. The irrigation standard should be such that the water should submerge the heart leaves on the furrow surface, so as to prevent them from falling into the heart leaves.

On the fertilizer burned out the growing point. After irrigation, it is necessary to strengthen the ventilation and keep the furrow surface moist. Top dressing should be used in high temperature and rainy seasons.

Nitrogen fertilizer, do not use human urine, so as not to rot the roots. Top dressing should be applied multiple times, not too much each time. Plastic Film Day.

The moisture in the light greenhouse is not easy to lose, especially in the severe cold winter, the wind release time is short, the indoor humidity is too large, and the plants.

The amount of transpiration is small, and the frequency and amount of irrigation should be minimized to prevent diseases caused by excessive humidity.

Hello? For your reference: For celery seedlings, you can choose a compound fertilizer with low nitrogen, low phosphorus and medium potassium as basal fertilizer.

Transplanting ground answer. Block selection in three years has not been planted vegetable plots, on this basis can be selected rotted and fermented chicken manure organic fertilizer 1 3 square per mu, fast-acting fertilizer selection of low nitrogen, phosphorus, potassium compound fertilizer as base fertilizer, conditional can be used microbial fertilizer per mu 500 grams, boron, zinc fertilizer 200 grams per mu.

When celery needs top dressing, you can choose low nitrogen and high potassium fertilizer and apply it with water.

Celery foliar surface can be sprayed with boron, zinc, calcium, potassium dihydrogen phosphate.

Thank you for your question.

It is recommended that you take a look at the "Nutritional Characteristics and Fertilization Technology of Celery" by China Food Science and Technology Network.