Key points of cultivation of celery in summer

Celery belongs to Umbelliferae. There are three kinds of water celery, celery and celery, which have similar functions, and it is better to use them as medicine. Parsley has a strong aroma, which is called "medicinal parsley". But it is not the same as cilantro. Celery is rich in protein, carbohydrates, carotene, B vitamins, calcium, phosphorus, iron, sodium, etc., at the same time, it has the effects of calming the liver and clearing heat, dispelling wind and dampness, dispelling swelling, cooling blood and stopping blood, detoxifying and relieving the lungs, invigorating the stomach and blood, clearing intestines and defecation, moistening the lungs and relieving cough, lowering blood pressure, invigorating the brain and sedative. Often eat celery, especially eat celery leaves, to prevent hypertension, arteriosclerosis and so on are very beneficial, and have adjuvant treatment effect.

Growth habits of celery

Celery like cold, humid climate, is a semi-cold-resistant vegetables; not resistant to high temperature. Drying can withstand short-term low temperature below zero. The lowest temperature of seed germination was 4 ℃, the optimum temperature was 15 ℃ 20 ℃, the germination was delayed below 15 ℃, and almost no germination above 30 ℃. The seedlings could withstand the low temperature of-5 ℃ and belonged to green vernalization type. The seedlings with 3 leaves and 4 leaves passed the vernalization stage after 10 days at the temperature of 2 to 10 ℃. The cold resistance of celery is poor, the seedlings are not resistant to frost, and the optimum temperature for vernalization is 12-13 ℃.

Key points of cultivation of celery in summer

1. Variety and sowing date

Summer celery cultivation, the choice of heat-resistant, disease-resistant varieties, such as green stem celery, Jinnan celery, glass crispy celery and so on. These varieties have less petiole fiber, faster growth, not easy to aging and good quality. The seeds are generally sown in stages from May to June and harvested one after another from August to October.

two。 Cultivation methods and soil preparation and fertilization

Summer celery is mostly direct seeded, and it can also be raised and transplanted. The land with high topography, convenient watering and drainage, good ventilation and fertile soil should be selected for the cultivation of summer celery. Before sowing, it is necessary to apply sufficient bottom fertilizer, deep turning and leveling and thinning, high border, narrow border, and the width of the border is 1.2 mi 1.5 meters.

3. Sowing of summer celery

The temperature is already high, generally soaking seeds to accelerate sprouting, sowing budding seeds and emergence faster. Wet sowing can be used, that is, watering thoroughly in the border, sowing after water infiltration, covering fine soil 0.5 cm thick after sowing; if the covered soil is too thick, it is difficult for young buds to be unearthed, and the seedlings are not prosperous after they are unearthed. Sowing after June, the temperature is high, the dry and hot wind is more, in order to reduce the ground temperature, sowing and covering the soil, the border is covered with shade net and other shade to create a cool microclimate, so that seedlings emerge quickly and evenly. Remove the mulch after emergence. Depending on the weather and moist soil, water the border frequently and keep the border moist. In case of heavy rain, stagnant water should be removed in time to prevent waterlogging. A small arch shed can also be used to cover the sunshade net before heavy rain to prevent Rain Water from scouring the border surface and causing soil consolidation.

4. Growth period management of summer celery

The growth of summer celery is accelerated after 5 Mel and 6 leaves, and it should be mainly promoted in management, and generally do not squat seedlings. The sunshade net should be covered in high temperature and dry season to cool and moisturize, which is beneficial to growth, reduce fiber and improve quality. Topdressing should grasp the principle of a small amount of fertilizer for many times, and should not be applied too much each time. It is suitable to apply nitrogen fertilizer and mature light pig manure water, while other organic fertilizers should not be applied. After the plant grows up, topdressing can be combined with watering. High temperature in summer, it is necessary to keep the soil moist, which is conducive to the exuberant growth of celery. The occurrence of diseases and pests should be prevented and controlled in time. Stop watering dung and spraying pesticides 15 days before harvest.

5. Harvest

According to the growth of celery and market demand, timely harvest. Generally due to the high temperature and heat in the growing season of summer celery, it is not conducive to the growth of celery, so the harvest of summer celery is generally earlier than that of autumn celery, that is, it is generally semi-adult on the market.