Planting management of celery in greenhouse

Celery has a long history of planting, its own plant is not very tall, the growth is relatively fast, more suitable for greenhouse planting, but also very suitable for greenhouse thermal insulation and hydroponics. Planting in greenhouse creates a man-made microclimate environment, which can keep warm and moisturize, but it is difficult to control the humidity inside the greenhouse, and the air environment is not as good as the outside. There are some shortcomings, which are also the focus of celery planting management in greenhouse.

I. Seedling management

Sowing seeds do not need to soak seeds, because the seeds are relatively small, direct seeding, it is best to use seedling plates to raise seedlings, so as to reduce seedling diseases and hidden germs. The seedling tray can save the amount of seeds, the emergence rate is high, and then the management is convenient and can be moved freely. The seedlings are raised directly in the greenhouse by hydroponics, and the nutrient soil should be disinfected. After rooting, the seedlings are raised in floating water. The light transmittance of greenhouse film should not be too high and the light temperature should not be too strong. Can be directly configured with nutrient solution pouring.

II. Transplanting management

Transplanting directly on the border surface, transplanting can directly take seedlings, transplanting with nutritious soil, basically does not hurt the root system. Keep it moist after planting, and don't reduce the amount of water until new leaves grow. After slowing down the seedlings, the roots should be watered many times when they begin to grow, but do not water them thoroughly and guide the roots to go down. After that, they will squat seedlings, apply less fertilizer and water during squatting seedlings, and apply light fertilizer and water in the later stage of squatting seedlings.

III. Growth management

1. Fertilizer application

Squatting seedlings at the end of the rapid growth period, when the need for a lot of fertilizer and water supply, celery fertilizer tolerance, mainly nitrogen fertilizer, followed by phosphorus and potassium fertilizer. Nitrogen fertilizer is mainly for leaf growth, phosphate fertilizer mobility is poor, so it is mainly used in the early stage, celery stem needs potash fertilizer, keep upright and shiny, but not too much, easy to harden. Need more trace elements boron and calcium, calcium deficiency causes dry heart disease, boron deficiency causes black heart disease, and potash fertilizer will inhibit the absorption of calcium and boron.

two。 Temperature and humidity

It can grow at minus 10 degrees under low temperature, but at a good temperature of 15 to 20 degrees, it grows slowly or even stops growing at high temperatures. However, the greenhouse film with higher opacity can be used to lower the temperature, as long as the temperature in the greenhouse should be lowered at night. On a sunny day, only 20 to 22 degrees will be fine. Watering in the shed is less than in the open field, do not flood irrigation, it is best to drip irrigation, the resulting water vapor will condense and drop to cause disease, and the humidity is too high. Just watch the soil watered when it is dry.

Celery planting in greenhouse is to create an environment suitable for celery growth, but I think greenhouse planting is mainly suitable in cold areas in winter. The difference in management is caused by the influence of the small environment. To learn more about agriculture, please stay tuned.