What are the key techniques for celery seed preservation?

Choose a good breed. Now sowing celery and cultivating it in a greenhouse is a cultivation project with strong adaptability, simple technical operation, high yield, good efficiency and easy to promote in a large area.

Cultivating strong seedlings. The usual seedling raising time is in early July, and the selected varieties are mainly Tianjin solid celery, and the sowing method of flat furrow sprinkle (strip) is adopted, and the general furrow is 5 meters long and 1 meter wide. Before furrowing, combined with deep ploughing, 30 kg of rotted high-quality farm fertilizer, 65 kg of diammonium phosphate, 50 grams of sowing amount per furrow, 667 square meters need to raise 60 square meters of seedling area.

After sowing, do a good job of shading and moisture management to facilitate the emergence of seedlings and keep the furrow surface moist. After the emergence of seedlings, the wet and dry surface of the furrow should be maintained. Drain water in time after heavy rain to prevent the seedlings from dying in the furrow area, the seedlings are thinned 2 times at the 3 leaf stage, the distance between the seedlings is 2 3 cm, the seedling age is 50 60 days, the plant height is 15 20 cm, 6 7 true leaves, and the diameter of the stem base is about centimeter, reaching the standard of strong seedlings.

Reasonable dense planting. Only by cultivating a robust single plant and coordinating the relationship between the group and the individual can we give full play to the role of the group in increasing yield. The celery planting time is early September, and the canopy film is buckled in early to mid-October, and the planting density is 7 10 cm.

In the cultivation of robust plants, the secondary squatting method is mainly adopted. The squatting time is about 15 days each time. The first squatting seedlings were in front of the greenhouse film after 7 days of slow seedlings, and the second time was at the beginning of the greenhouse film.

Since the climatic conditions at this stage are very favorable for the growth of celery, in order to prevent overgrowth, it is necessary to take measures to control the upper and lower to promote the growth of the root system and the thickening of the stem base. The first squatting seedlings are mainly watered, generally watered once every 7 days or so, to maintain the degree that the furrow surface is wet and flat but not cracked. The second squatting of seedlings is mainly based on temperature control, supplemented by water control.

Do a good job of ventilation and cooling in the early stage of the shed film, especially strictly prohibit the temperature in the shed in the first half of the night. Generally 18 20 during the day and 12 15 at night. By squatting seedlings, the diameter of the base of the plant reaches about centimeters, and the skeleton of high yield is built.

Reapply the base fertilizer. Increasing the application of base fertilizer, fertilizing soil fertility, and improving the physical and chemical properties of soil are the main measures to achieve high yield in celery for many years. Before planting, 10 cubic meters of high-quality farm fertilizer such as rotting chicken manure and pig manure were applied every 667 square meters in combination with deep ploughing, 50 kg of diammonium phosphate, and 25 kg of potassium sulfate.

After slowing seedlings, it is generally 15 to 20 days combined with irrigation and topdressing, and it is advisable to apply nitrogen fertilizer and phosphorus and potassium fertilizer alternately or mixedly. Apply 25 kg of urea or 20 kg of ferric phosphate and 10 kg of potassium sulfate per 667 square meters, such as the application of three-element high-efficiency compound fertilizer to 40 50 kg per mu is appropriate, and combined with disease prevention and insect control for root topdressing, the varieties are mainly sprayed Shibao, Aiduoshou, Yunda 120, borax, etc. Celery meets the needs of various nutrients throughout the growth process to increase yield and quality.

Plants are one of the main forms of life, including trees, shrubs, vines, grasses, ferns, and familiar organisms such as green algae and lichens. Plants can be divided into seed plants, algae plants, bryophytes, ferns, etc., and it is estimated that there are about 450,000 species in existence. Most of the energy of green plants is obtained from sunlight through photosynthesis.

The large plant seed collection method is also called the adult plant seed collection method or the old root seed collection method. Before the harvest of commercial celery in winter, the good single plant that can represent the typical characteristics of this variety was selected in the autumn celery field as the retained seed plant, and the miscellaneous and inferior plants were removed. When a small amount of seeds are retained, the selected excellent single plant can also be transplanted to the seed retention site; In early spring, the selection is carried out, that is, the plants that are early mossed, not cold tolerant and susceptible to disease are eliminated.

Pay attention to watering and fertilizing after flowering. Celery has a long flowering period and inconsistent seed maturity period, so in order to ensure the quality of the seeds, it is best to harvest them in phases and batches. Generally, 75 100 kg of seeds can be produced per acre of reserved seed land.

When using the large-scale plant section method to collect seeds, the commercial traits and cold tolerance of the plant can be selected, and the deterioration and degradation of the variety can be prevented in a certain procedure. Therefore, this method is more suitable for the purification and rejuvenation of local celery varieties.

Small plant seed collection method is to sow seeds in the same year, harvest seeds or cultivate seedlings before winter, plant and reserve the seed land in the next spring, and then let it moss blossom and bear fruit, and then collect seeds. Although the cost of this method is small, it can not strictly select the seed plants, and it is easy to cause the degradation of the varieties when it is used for many years, so it is mostly used for propagation and production of excellent new varieties when they are just beginning to be promoted. Harvesting of small plants is the key to mastering the appropriate sowing date.

Generally, it is broadcast live in the open field around the end of February. If the sowing is too late, the seedlings cannot pass the low-temperature vernalization stage, and the seedlings cannot be stared smoothly, and the coarse moss flowering; However, if the seeds are sown too early, the seedlings will pass through the vernalization stage, and the vegetative growth period will be too short, and the accumulated nutrients will be small, resulting in low seed yield. When using the small plant collection method, because the plant is smaller, the branch power of the plant is not strong after mossing, so the fixed density of the larger plant should be denser when the seed is collected, usually the hole row spacing is 20 cm 50 cm, and each hole is planted 2 3 plants.

Other cultivation management techniques and seed harvesting methods are the same as those for large plants.

First, maintain the right temperature. Celery originates on the Mediterranean coast, its root system is an umbrella-shaped shallow root vegetable, he likes a mild climate, the temperature suitable for germination is generally 18 25 degrees, the lowest temperature is about 4 6 degrees, the temperature must not be lower than minus 4 degrees, the maximum temperature should not exceed 30 degrees, generally speaking, its root system can survive at about minus 15 degrees, but planting celery still has to provide him with a suitable temperature, maintain a temperature of about 16 20 degrees, so that celery can grow better.

Second, take care to get plenty of light. Generally speaking, celery generally likes to grow in places with low temperature and long sunshine, which can help him promote flower bud differentiation, but you need to pay attention to the light, and it must not be too strong, which will increase its fiber and cause his quality to be poor, so you must pay attention to shade and maintain a warm environment at ordinary times, so that celery can grow better.

Again, to provide nutrients to the soil. Celery is suitable for growing in places rich in organic matter, so the soil selection of celery is also more important, in ordinary times, we should choose the soil with rich fertility, and then can provide some sandy loam soil, generally speaking, planting 100 kg of celery, you need the appropriate ratio of nitrogen, phosphorus and potassium fertilizer, pay attention to potassium fertilizer can be kept at 60 grams, nitrogen fertilizer is kept at about 40 grams each time, and phosphate fertilizer is kept at about 15 grams. Because nitrogen fertilizer can help plants grow and prevent celery from aging and hollowing, it is important to maintain the amount of nitrogen fertilizer, and can also supplement some trace elements, common boron can prevent celery from cracking.

Finally, provide moisture to the soil. The root system of celery is relatively shallow, generally about 12 18 cm in height, so celery does not like too arid soil, in normal times need to keep the soil moist, pay attention to provide nutrient-rich soil, provide him with fresh air, in the growth period of celery, also need to maintain sufficient water for him, so as to ensure that celery grows more robust.

1. Spring celery. In the north, seedlings are raised in protected areas from January to March, planted in open fields from March to April, and harvested from May to July. In the Yangtze River Basin, March is the suitable sowing period, sowing too early, after the seedlings are subjected to a certain low temperature, it is easy to pass through the vernalization stage, causing unripe sprouting, sowing too late, and entering the hot summer in the later stage, affecting the yield and quality.

2. Summer celery. Seedlings are raised in the open field after the frost breaks in spring, planted in June to early July, and harvested and marketed in August and September. In the hot and rainy season, summer celery has poor growth, many dead seedlings, low yield, and small planting area.

Valuation method of greenhouse autumn celery.

1. Planting method: greenhouse celery sowing time at the end of August, when the tomatoes are not completely harvested in the summer, the method of direct sowing is adopted, with the operation road as the furrow, each furrow two ridges, each furrow is applied with 30 kg of rotted high-quality farm fertilizer, diammonium phosphate, do a good job of shading and water management after sowing, generally about 7 days to water 1 time, in order to facilitate the emergence of seedlings, keep the furrow moist.

When the seedlings have 2-3 leaves, carry out 1-2 times of thinning, and maintain the standard of strong seedlings, celery in solar greenhouse mainly increases the group to achieve the purpose of increasing yield, so it is necessary to plant reasonably densely.

2. The key to high yield of celery is to apply foot fertilizer, increase base fertilizer, cultivate soil fertility, and improve the physical and chemical properties of the soil. 8,000 kg of high-quality farmhouse fertilizer and 50 kg of diammonium phosphate per mu. At the seedling height of about 70 cm, combined with irrigation and topdressing, it is advisable to alternate nitrogen fertilizer and potassium phosphate, and apply 25 kg of urea, or 20 kg of diammonium phosphate and 10 kg of potassium sulfate per mu to improve the yield and quality of celery.

The current planting time is generally in spring, and the planting technique is not to be too dense.

Hello dear, wait a few minutes, inquiring for you

Hello Qinqin, I am happy to answer your questions, Qinqin celery is a vegetable that can be grown all year round, but the yield and quality of celery grown in different periods will vary. Generally, the suitable planting time in spring is in March and April every year, and the suitable planting time in summer is in June and July every year, but the yield is not very high in summer. Therefore, many farmers choose to plant in autumn and winter.

Planting method: when planting celery, you need to raise seedlings first, it is recommended to use bags to pack the seeds when raising seedlings, and then put the bag into water to soak for 2-3 days, in the process of soaking, you need to change the water every day, take it out to dry after soaking, generally 3-5 days will germinate, you can plant after the seedlings grow together, the seedlings are evenly planted in the field, and you need to water thoroughly after planting. An appropriate amount of farmyard manure can also be applied.

In the planting process, if there are dead seedlings or seedlings in poor growth state, they need to be pulled out in time and then replenished seedlings. Hope it helps

Kissing, generally the first watering after planting is within 10-15 days after planting, and need to be topdressed in time, at this time the topdressing is mainly carbon-based fertilizer. When celery enters the vigorous growth period, it is necessary to carry out the second top dressing, this time to nitrogen fertilizer, can not choose unrotted farmhouse fertilizer for fertilization, which will cause celery to rot roots or rotten hearts, watering according to the "less water more watering" method of watering. If there are weeds in the field, you also need to weed in time to avoid the competition between weeds and celery for nutrients, I hope it can help you

Celery is grown and managed in the following ways: soil conditions, providing water, providing nutrients, and providing sunlight.

1. Soil conditions.

When planting celery, you need to select soil rich in organic matter, disinfect and sterilize the soil with high-temperature manuscript search to reduce bacteria and pests in the soil, and then plant celery into the soil to allow the plant to grow healthily.

2. Provide moisture.

In the process of celery growth, you can water the plants every 2-3 days, keep the soil moist when watering, provide the water needed for celery growth, and make the plants grow better.

3. Provide nutrients.

In the celery growing period, you need to apply nitrogen fertilizer to the plant every 15 days or so, so that the celery can absorb sufficient nutrients and grow more vigorously, and in the process of fertilization, the soil can be turned over to improve the air permeability of the soil, which is conducive to better respiration of the plant roots.

4. Provide sunlight.

In the process of celery growth, it is inseparable from sunlight, and the plant can be placed in a sunny environment during daily maintenance, so that celery can bask in the sun, so that it can photosynthesize and promote the growth of the plant.

Celery planting precautions

1. Pay attention to seed selection. There are two kinds of celery, celery and celery, and in the process of choosing to plant, it is necessary to choose according to the local market demand and its own planting technology base. In addition, celery seeds have a dormant period of more than a month after harvesting, so they should not be planted immediately after the seeds are harvested, and the seeds of the previous year should be used for sowing.

2. Pay attention to germination. The germination temperature of celery seeds is 4 degrees Celsius to 30 degrees Celsius, and the germination is better when the temperature is about 20 degrees Celsius, but if there is a condition, it can be treated with variable temperature, kept at 25 degrees Celsius for 8 hours, and then kept at 15 degrees Celsius for 18 hours, and the germination rate is the highest.

3. Pay attention to water and fertilizer management. Although the root system of celery is light, but the distribution is shallow, in addition to celery is also a crop that needs more water, the irrigation of celery should be kept a small amount many times, and each watering should be carried out in the morning and evening when the temperature is low, to avoid the temperature at noon is too high, causing damage to the roots of celery. At the same time, it is necessary to pay attention to the application of fertilizer, and top dressing 2-3 times at the seedling stage, mainly urea.

4. Pay attention to pests and diseases. Common diseases of celery are soft rot, sclerotinia and black rot. In the planting process, we should pay attention to prevention, pay attention to the rotation of celery on a piece of land, the rotation time interval is more than 2 years, and the seedling process should pay attention to the disinfection of the seedbed and cultivate non-toxic strong seedlings.