In early spring, cucumbers have low temperature during the nursery period and the sunshine is short. To achieve Miao Qi and Miao Zhuang, the following aspects of the work must be done when raising the seedlings:
First, seedbed preparation
There is a nursery bed in the greenhouse. In order to improve the indoor temperature, geothermal lines can be laid or room-heated stoves can be laid, and breeding hotbeds can also be used. The method is: first in the greenhouse in accordance with the size of the required seedbed dig deep 30 cm bed pit, the bottom of 20 cm of fresh livestock excrement, heating water, foot to see the water, lift the foot and not see the water is appropriate, humidity is 65% ~ 75%, covered with plastic cloth, and then cover 10 cm thick soil, stepping on the flat. The nursery bed should be ready 15 days before sowing.
Second, the preparation of nutritious soil
Use 50% fully decomposed organic fertilizer, 50% fertilizer field soil (sand loam without planting vegetables), 3 ~ 5 kg of plant ash, and 0.5 kg of ammonium dihydrogen phosphate 0.5%, mix thoroughly, sieve, and mix. The area of ​​nursery beds expands with the expansion of cultivated areas. Generally, the area of ​​nursery beds is 1/15 of the cultivated area.
Third, seed processing
Soak germination, soak seeds before selection seeds, sun in the sun for 5 ~ 6 hours, dip in water at 25 °C, then put in 55 °C warm water (water is 5 times the seed), stirring in one direction, when the water temperature dropped to After 30 °C, let the seed soak in water for 5-6 hours, then scoop out, rinse with water several times, remove the mucus and put it on the Gauze. After the water is rinsed out, wrap the seeds and germinate at 30 °C. After germination, it was frozen at 0°C to -2°C for 24 hours, and was then hydrolyzed at a temperature of 20°C to facilitate the increase of yield.
Fourth, sowing
When sowing, first use the warm water stored in the greenhouse to soak the bottom water. When the bottom is infiltrated, draw a ditch with a distance of 10 cm and a depth of 0.7 cm. Put the buds at the intersection, cover the soil with 1 cm, and then cover with a thin film. The daytime temperature is maintained at 30°C and nighttime at 16°C to 18°C. The seedlings can be established within 3 to 4 days. After 50% of the seedlings are seedlings, the film is removed in time and a layer of 0.5 cm thick fine soil is scattered. The sowing time is mid-to-late January, and the average sowing volume is 200 grams. To prevent the occurrence of diseases, a layer of medicinal soil made from 8cm of Fermi and 30 times of fine soil can be sprinkled and the thickness is 0.5-1cm.
V. Post-broadcast management
After sowing, it is generally not ventilated until emergence. The indoor temperature is maintained at 25°C to 30°C and the humidity is maintained at 80% to 90%; when 70% of seeds are emerged, ventilation is started to cool, and the temperature is maintained at 20°C to 25°C during the day and 17°C at night. ~ 18 °C; Seedling stage (seedlings unearthed to the first true leaf top heart) to increase light as much as possible, reduce the night temperature and seedbed moisture, during the day 20 °C ~ 30 °C, night 12 °C; the first true heart to the first Prior to the trifoliate leafing, keep 25°C to 28°C during the day and 10°C to 12°C during the night; reduce the temperature 4 to 5 days before planting (4 leaves and 1 heart), and use 22°C to 25°C during the day and 8°C to 10°C during the night.
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