The so-called solar greenhouse autumn winter celery, the early autumn (late August-September) nursery, late autumn (late October) planting, the harvest of celery listed before the Spring Festival. The main points of its high-yield cultivation techniques are described below:

First, choose a good species

The main varieties of celery are "Kaifeng Glass Crispy", "Jinan Real Celery" and "American Celery".

Second, planting seedlings

1. Select a seedbed. Should be elected drainage and irrigation facilities, loose soil, fertile soil or sandy loam soil seedbed. Normally, each 0.1 mu seedbed will be applied with organic fertilizer 300 kg to 500 kg, urea or other fine fertilizer 2 kg to 4 kg, and fine soil preparation will be broadcast.

2. Seed treatment. Seeds soaked in cold water for 12 to 24 hours, picked up and rubbed repeatedly by hand, crushed the waxy skin, placed in 15 °C to 20 °C place, sprinkle water every day and moisten and turn 2 times, until 50% of the seed dew can be planted .

3. Seeding and management. Choose to sow in the morning or after 5pm. Put enough water in the pot before sowing, evenly sow after the water seeps. After sowing, cover the sand with 0.5 cm to 1.0 cm and put on a bow shed to keep the soil moist. About 6 days, the seedlings were unearthed, and the bow shed was gradually withdrawn. After the water was poured on the ground, it was necessary to pay attention to the prevention of high temperature and rain. After the emergence of seedlings to be carried out. During the nursery period, the fertilizer is topdressed 1 to 2 times according to the seedlings, and 0.1 kg of urea can be topdressed to 1.5 kg per 0.1-mu seedbed.

Third, land preparation

1. Fertilization preparation. In greenhouses, 5,000 kg of farmyard manure per acre, 50 kg to 60 kg of phosphate fertilizer, and 30 kg to 50 kg of ammonium bicarbonate are used as basal fertilizers.

2. Timely colonization. Seedlings age from 50 days to 60 days and can be planted when there are 5 to 6 true leaves. Seedlings should be irrigated before raising seedlings to facilitate seedlings. Each planting double plant or single plant can be. General spacing 15 cm, 10 cm from the hole. The planting depth is based on the principle of "shallow rootless, deep-seated".

IV. Management after planting

1. Management before easing seedlings. After pouring the planting water, the seedlings shall be poured again for 2 to 3 days. It is found that the heart leaves turn green, and when the new root is born, it is necessary to protect the roots by cultivating loose soil, promote the development of the root system, prevent the outer leaves from becoming long and affect the quality.

2. Management after easing the seedlings. First, control the temperature. After harvesting from the time of planting to the Spring Festival, the appropriate temperature should be controlled within the range of 15°C to 22°C. Films should be buckled before and after frost. After mid-November, if it encounters snow or low-temperature cold, it should be covered with grasshoppers. When the temperature is high at noon on sunny days, ventilation should be conducted to reduce the temperature. Second, water and fertilizer management. Water should be poured on the ground to keep the soil moist. According to the amount of fertilizer applied to soil preparation, soil fertility, and growing conditions, it is generally possible to combine topdressing with watering twice, each recovering 15 kg to 20 kg of diammonium or 20 kg to 25 kg of ammonium sulfate, combined with the application of carbon dioxide gas fertilizer and Foliar spraying fertilizer. Third, pay attention to pest control.

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