Listed after the colonization of celery from New Year's Day to the Spring Festival

Listed on the New Year's Day to the Spring Festival, celery is usually planted in early October. It will be listed on the New Year's Day and the Spring Festival, and it can be continued until the end of March. Management techniques after planting are as follows:

Soil preparation fertilization is better with cucumbers, tomatoes, and beans, and cannot be re-planted; before planting, decomposed manure or compost is applied as base fertilizer in the greenhouse, about 5500 kg per mu, and with superphosphate 50 kg and potassium sulfate 30 kg. With 3 kg of borax, various manures were blended evenly and applied in combination with the ground; 1.5-meter-wide bracts were made and north-south trended.

Cultivate the seedling bed area should be increased by 1/3 compared with the conventional nursery area, and the seeding rate should be reduced by 1/2-2/3. The planting area per acre should be 90 square meters with a seedbed of 50-60 grams; pay attention to the seedling after emergence. Keep seedlings at a distance of 4-5 cm; shoots about 20 cm high; seedlings with 8-9 leaves when planting; size seedlings should be separated when planting, single plants with soil colonization, plant spacing of 30 cm (20-25) cm is appropriate The depth of planting is appropriate to "shallow rootless, deep-seated", and then pours water once.

Planting and planting individual celery plants in order to improve their quality and commercial quality; planting spacing is 40-50 cm, about 3,500 plants per mu; this plant height can reach 70-80 cm, petiole hypertrophy, crisp texture Tender, weight per plant up to 1 kg or more.

Scientific fertilization When the outer leaf growth period is over, after entering the coring period, the number of leaves will no longer increase, and the heart leaves will begin to become enlarged and full. This period is the formation period of commercial traits of celery, and the supply of water and fertilizer must be guaranteed; topdressing fertilizer is available nitrogen and potassium. Main (such as ammonium sulfate, grass ash), and can be sprayed with foliar spray or spray growth regulators, etc., have a significant effect on increasing production.

Timely watering and planting, the initial growth is slow, the leaf area is small, the water should be properly controlled, and the principles of no drought and no watering should be mastered; however, the soil should be cultivated and protected by cultivating loose soil to promote root growth; after 30 days of planting, the growth is accelerated, mainly outside. The number of leaves increased rapidly, and water and fertilizer management must keep up; fertilizers can be topped 2-3 times in succession, and chased once in 10 days, with mainly available nitrogen fertilizers, and with appropriate amounts of phosphate fertilizers, while increasing the amount of water.

The temperature of the light celery like cool environment, the growth period during the day temperature should be between 15 °C -25 °C, when the temperature exceeds 27 °C, should be promptly released to cool; night temperature not lower than 13 °C; appear frost, pay attention to cold Insulation, grass cover should be covered early cover; early growth as much as possible to strong light of celery to promote leaf thick, late in the main light to promote low-light growth.

The main pests for controlling pests include leaf spot, black rot, sclerotinia, and soft rot. Physiological disorders include heartburn, hollow and stem cracks. Available 75% chlorothalonil WP 600 times, or 6490 WP 600x, or 50% Sulfon 1500x, or 50% Nylon 1000x, or 50% Sclerotium 1000 times liquid. Once every 7-10 days, even spray 2-3 times, the protection of mu with 200 grams of 45% chlorothalonil aerosol fumigation. The main insect pest aphids can be used 40% dimethoate EC 1000 times, 50% anti-inferiority WP 3000 times spray control, can also be used to eliminate the control of tobacco smoke.

Timely harvest 1 month before harvest, spraying foliar spray with 80-10010-6 kanamycin, plants can be increased 5-10 cm; plant height 75 cm, weight per plant more than 1.5 kg timely harvest; after harvesting the roots The old, yellow outer leaves are removed, and the upper 20 cm long tip portion is cut off and placed in a 50 cm long plastic bag, 1 bag per bag.

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