What are the characteristics of celery growth and development

Celery herb, 5 15 cm high, creeping stem, well-developed walking stem, slender stem, creeping on the ground, rooting jointly.

1.Perennial leaves fleshy, leaves nearly rounded or kidney-shaped, with V-shaped notches, leaves 2 3 cm long, wide cm, margins 5 7 shallowly lobed, lobes obtuse serrate, shallow lobes approximately equal to serrated depth, base heart-shaped, palmately veins 7 9, leaf surface sparsely pubescent.

2.Celery prefers cold, humid climates and is a semi-cold-tolerant vegetable. Not resistant to high temperatures. Drying can withstand short-term sub-zero temperatures. The cold resistance of celery is poor, the seedlings are not frost tolerant, and the suitable temperature for vernalization is 12 13.

3.Winter and spring seedling period, sowing at the appropriate time, pay attention to heat preservation, avoid the seedling period in the low temperature of 8 to 10 below, the night temperature should be above 8 to 12, and the daytime temperature should be 15 to 20, to prevent the seedlings from passing the vernalization stage.

4.Strengthen management: After planting, it is necessary to strengthen fertilizer and water management, timely control of pests and diseases, ensure their normal growth and development, prevent drought, less fertilizer, squatting seedlings, promote vegetative growth, and inhibit reproductive growth.

5.Spraying 20 to 50 milliliters of gibberellin every 7 to 10 days during the peak growth period, 2 to 3 times in a row, can promote vegetative growth and slow down early budding.

6.Timely harvesting: Harvesting before the flower sprouts have grown, or using the leaf splitting harvesting method can reduce the harm of early sprouting, and do not harvest when the sprouts are old.

Celery growth and development includes a vegetative growth period and a reproductive growth period. Vegetative growth can be divided into five stages:

1) Germination period.

Seed germination to cotyledons, 15 20 It takes about 10 15 days.

2) Seedling stage.

Cotyledons to 4 5 true leaves, about 20 about 45 60 days, for the suitable planting period, the seedling stage can tolerate about 30 high temperature and -4 -5 low temperature.

3) The early stage of leaf cluster growth.

From 4 5 true leaves to 8 9 true leaves, the plant height is 30 40 cm, the temperature is 18 24, about 30 40 days. In the case of 10 low temperatures for more than 10 days, it will have sprouts.

4) The peak growth period of leaf clusters.

From 8 9 leaves to 11 12 leaves, the leaves grow rapidly and the growth accounts for about 70% 80% of the total growth of the plant, after 30 60 days at 12 22 temperatures.

5) Dormancy.

The harvested plants overwinter at low temperatures and are forced to dormant. The reproductive growth of celery requires low temperature and long day conditions. Overwintering celery was affected by low temperature, and the vegetative seedling end began to differentiate into the reproductive seedling end under 2 5.

In spring, under conditions of long sunshine and 15 to 20 years, the buds are formed, and the flowers and seeds are formed.

1. Celery herb, 5 to 15 cm high, creeping stem, well-developed stem, slender stem, creeping on the ground, and rooting;

2. Celery likes cold and humid climates and is a semi-cold-tolerant vegetable. Not resistant to high temperatures. Drying can withstand short-term sub-zero temperatures. Celery has poor cold resistance, and seedlings are not frost tolerant;

3. During the seedling period in winter and spring, sow at the appropriate time, and pay attention to heat preservation;

4. After planting, it is necessary to strengthen fertilizer and water management, timely prevent and control pests and diseases, ensure their normal growth and development, prevent drought, less fertilizer, squatting seedlings, promote vegetative growth, and inhibit reproductive growth;

5. Spray 20 to 50 mg of red code zomycin every 7 to 10 days during the peak growth period, and spray 2 to 3 times in a row, which can promote vegetative growth and slow down the sherbening at the Xiannian stage;

6. Harvest before the flower sprouts have grown, or use the leaf splitting harvesting method to reduce the harm of the early sprouts of the coarse young mold, and do not harvest the sprouts when they are old.

1. The growth period of celery takes four months, and the germination of celery seeds to the appearance of the first true leaf is 10 15 days, and the suitable temperature is 15 20. The first true leaf of celery appears to 4 5 true leaves, the suitable temperature of Xinliang is about 20, the celery needs 40 50 days, and the celery needs 50 70 days, which is the appropriate period for planting, in addition, the celery seedling stage has strong adaptability, and can withstand about 30 high temperature and 4 5 low temperature.

2. Celery has 4 5 true leaves, the plant is up to 30 40 cm, it takes 30 40 days at 18 24 moderate temperature, and it is easy to smoke moss in case of 5 10 low slip and low temperature for more than 10 days.

3. Most of the celery heart leaves are exhibited to harvest, at this time, the petiole grows rapidly, the growth accounts for 70 80% of the total number of plants, the suitable temperature is 12 22, and it takes 30-60 days to harvest.

Celery is a nutritious vegetable and a common edible celery in people's daily life. Growing celery can bring good economic benefits. During the cultivation process, it is necessary to fully understand the requirements of celery growth on the environmental conditions, which is very beneficial for the management of the cultivation process.

Let's take a look at what conditions celery can grow better?

1.Temperature requirements for celery growth.

Celery is a hardy vegetable that requires cold and wet environmental conditions. Seedlings can tolerate low temperatures of -4 5, plants can tolerate low temperatures of -7 10, and 15 20 is the most suitable vegetative growth period. If celery is sown early in early spring, in celery cultivation, it is necessary to grasp that the temperature during the day should be appropriately raised to promote the assimilation of celery.

2.The requirements for light to grow celery.

Celery is a vegetable crop that is tolerant of low light. The length of light had little effect on its vegetative growth. Celery seeds prefer light when germinating.

They germinate easily in light conditions and slowly in dark conditions. In the early growth stages of celery, there should be enough light for the plant to fully develop. Celery belongs to a type of vegetable that prefers moderate intensity light.

The vegetative growth period is not early to tolerate strong light. In production, this positive source can be used for proper dense planting, which is conducive to improving yield.

3.Soil. Celery is native to swampy areas.

Its root system is distributed in shallow soil layers and has strict requirements for soil moisture and nutrients. Suitable for soils rich in organic matter, moisture and fertility. The adaptation of celery to the soil pH range is about pH.

The growth and development of celery requires the use of adequate fertilizers. The effects of phosphorus deficiency in the early period are greater than in other periods. The effect of potassium deficiency in the early stage is small, and the effect of potassium deficiency in the later stage is greater.

4.Moisture requirements.

The root distribution of celery is shallow, the nutrient absorption capacity is not strong, and the demand for water is greater. Adequate hydration is required throughout the growth period. After sowing, it should be watered in time to promote the germination of seeds.

When celery is in the vegetative growth period, it is necessary to ensure air humidity and soil moisture content. Reduced yield, poor quality.

Celery grows better when it is sunny and has enough water and nutrients, not only will the yield increase, but also the quality will be very good.

Generally speaking, the celery core bush is more suitable for land with sufficient moisture, and the other is to have enough nutrients, but remember not to sell the fertilizer to the celery roots when fertilizing, otherwise it is easy to burn the greens, and then more weeding.

In some places where the light is not very strong, the soil is very deep, the pH value of the soil is about the same, and the moisture in the soil is very sufficient.

<> celery is generally grown in soil. Celery is a kind of plant belonging to the order Apiformes, Apiaceae, Amiqin family, celery, celery (celery) species or cress (white celery) species, celery (parsley) species, its varieties are numerous, it has a long planting history and a wide range of planting area in China, and it is one of the vegetables that people often eat.

The growing period of celery is about three months; There are three kinds of water cress, dry celery and celery, which have similar functions, and the medicinal use is better than that of celery. The aroma of celery is stronger, said"Medicinal parsley"。But coriander is not the same species, celery is rich in protein, carbohydrates, carotene, B vitamins, calcium, phosphorus, iron, sodium, etc.

Celery planting technology and species characteristics.

Growth characteristics. Celery likes cold and humid climates, is a semi-cold-tolerant vegetable, and is not resistant to high temperatures. Drying can withstand short-term sub-zero temperatures. The minimum temperature of seed germination is 4, the optimal temperature is 15 20, the germination delay below 15, almost no germination above 30, the seedlings can tolerate 5 7 low temperatures, it is a green vernalization plant, and the seedlings of 3 4 leaves pass the vernalization stage after 10 30 days under the temperature conditions of 2 10.

The cold resistance of celery is poor, the larvae are not frost tolerant, and the suitable temperature for vernalization is 12 13. The seeds of celery are small, the top soil strength of young shoots is weak, and the emergence of seedlings is slow. Sowing plots with high temperature, soil compaction, and water accumulation in furrows are not conducive to seedling emergence, and seeds are easy to germinate under light conditions.

Celery seedlings grow slowly, have a long seedling period, and are susceptible to weeds, so management should be strengthened in seedling raising. (1) Cultivation season Celery is cultivated in the open field in North China, and the climate suitable for celery growth in autumn is the longest, so the yield, quality, and cultivation area are also the largest. Celery can also be cultivated in a variety of protected areas to achieve anniversaries**.

Generally, seedlings are cultivated in the greenhouse in spring from January to February, planted from late March to mid-April, harvested from late May to July, cultivated in autumn, sown and raised from mid-June to early July, planted in spring from early and mid-August to mid-September, and harvested in October and December. In general, the cultivation in the protected area is mostly sown and raised in early July, mid-July to early August, planted in improved sunny furrows or solar greenhouses in September and November, and harvested in January and March. (2) Sowing and management Celery seedlings are difficult to emerge, so the sandy loam soil with high terrain, convenient drainage and irrigation, loose soil and fertile soil should be selected for seedling raising.

It is necessary to apply enough decomposed base fertilizer, and to make the soil loose, it is necessary to apply more circle fertilizer. In order to achieve fast, complete and uniform seedling, 7 to 8 days before sowing, seed soaking and germination can be carried out. Sow seeds in mid and late June, soak them in cold water 12 14 for 12 24 hours, wash the seeds, dry them in a cool place for a while, wait for the surface of the seeds to dry, wrap them in a wet towel, put them in a cool place (15 20) to see the light to promote germination, and wash them with cold water once a day.

When the seeds are budding, they can be sown, and the wet sowing method is mostly used, that is, the bottom water is watered first, and the water is mixed with sand and sown after water infiltration. Build a shade shelter on the seedlings to cool down, protect from the sun, and prevent heavy rain. After sowing, the soil should be thin and even, the seedlings should be kept moist, generally every 1 2 days in the morning and evening, water a little water until the seedlings emerge, spring and autumn sowing can not be built shade shed, to boil small water frequently, in order to facilitate the emergence of seedlings.

In order to reduce the damage of weeds, 25 acres of wettable herbicide ether can be used before emergence after sowing, 80 100kg of water can be added, and evenly sprayed on the furrow surface. Seedlings have 2 leaves at a time, and the seedling spacing is 1cm. Seedlings 3 4 pieces of seedlings once a seedling, seedling spacing 8 10cm square, seedlings live, to carry out cultivation, to promote the seedling roots and leaf differentiation, can be applied urea 10kg mu, and remove all mulch, in order to facilitate seedling exercise.

When the seedlings grow to 5 7 pieces, and the seedlings are 15 18 cm high, they can be planted. Pay attention to the prevention and control of aphids, spot blight, etc.

First, the early stage of growth. After planting, it should be watered frequently to prevent drought and cracks on the surface. When new leaves grow after 10 days, stop watering, loosen the soil between rows, water again after 2-3 days, and do not water for 4-5 days in the future, squat seedlings to promote rooting.

About 15 days after the seedlings are slowed, 15 kg of urea per mu is applied to promote the growth of seedlings.

Second, the vigorous growth period. After the plant is sealed, a large number of white roots will flood the surface due to the moist soil, which means that the vigorous growth period has arrived. At this time, the temperature is suitable, which is a favorable opportunity to seize high yield, so it is necessary to do both water and fertilizer, chase fertilizer once in 7-10 days, and chase urea 20 kg per mu to ensure that there is no fertilizer during the growth period.

The last top dressing should be done half a month before harvest. Starting about 20 days before harvesting, spray urea + potassium dihydrogen phosphate every 3-5 days.

3. Late growth. Before and after the cold dew, the temperature gradually drops, celery grows slowly, it can be watered every 10-15 days, sprayed 920 20 days before harvest, the first time is 30ppm, and sprayed again after 3-5 days with a concentration of 35ppm. When the minimum temperature reaches -2 at night, harvesting or storage begins.

It takes about 50 days from celery seedlings to transplanting, and then to planting, which can be marketed in 80-90 days.

Summer-planted celery is generally sown in May and June, planted in late June to early August, and harvested from late August to October.

The main growth period of summer celery is from June to August, and the high temperature and strong light during this period affect the growth of celery and make its quality deteriorate. The use of greenhouse shade net cultivation can create a suitable growth environment, improve product quality, and can be harvested and marketed in batches in mid-September.

The growth cycle of celery varies from season to season, and sometimes varies depending on the variety.

However, field management should be strengthened, water and fertilizer should be reasonably controlled, and vegetable stems should be sprayed in the growing period to make the plant stems thick, the leaves thick, and the leaf color to be fresh and tender, and at the same time improve the disaster resistance of celery.

It is ready to eat within 80 days.

If well managed, seedlings can sprout in about a week. It can be marketed in about a month, and if it takes two or three months, the vegetable farmers will not pay for it.