Facilities melon seedlings

Greenhouse melons are generally sown at the end of December to early January, and greenhouse cultivation is planted at the end of February. The main points of the melon seedling techniques are described below:

First, seed treatment before sowing the best seed treatment, disinfection and sterilization, promote germination. There are three seed treatment methods: soaking in warm soup, high temperature treatment and chemical treatment. The first two are physical treatment, no pollution and residue, in line with the requirements of organic agriculture and green food, can be commonly used; the latter is a chemical treatment, easily lead to seed contamination And residual hazardous substances, it should be used with caution or not. In the production, warm soaking is usually used. Soaking in warm water at 55°C～60°C for 6-8 hours, then remove the seeds, wrap them with gauze, put them in 28°C～32°C environment and germinate 1～2 days, when the buds are long To 0.2 to 0.5 cm can be sown. This method can activate the enzyme activity in the seeds, promote germination, and kill pathogens on the surface of most of the seeds.

Second, nursery soil preparation melon seedling soil can be drawn on the spot, the fertile loose vegetable garden soil or paddy soil, weathered pond mud and furnace ash, livestock and poultry manure, composting 3 months Serve. If necessary, a small amount of ternary compound fertilizer may also be added in a ratio of 0.15% in the culture soil.

Three, sowing 2 to 3 days before sowing seedbeds or nutrient pods soaked in bottom water, sowing seeds down when the seeds are laid down, sowing the first seedling bed or nutritious pod surface sprinkled with 0.3 cm thick carbendazim preparation of medicinal soil, After sowing, the seeds are covered with 1 to 1.3 cm thick medicinal soil, and then a layer of plastic film is placed on top to protect the skin. The outside is covered with a small shed, and the arched membrane is preferably made of a new non-drip film.

Fourth, temperature management Before emergence temperature should be maintained at 20 °C ~ 30 °C, the temperature after emergence is 15 °C ~ 25 °C, not less than 13 °C. The temperature should be maintained at 25°C-35°C during the day before emergence and not less than 16°C during the night. Immediately after unearthing, the plastic film was removed, the temperature was lowered, and the temperature was kept between 23°C and 25°C during the day and 13°C during the night to prevent the formation of tall seedlings. When the true leaves are unfolded, the temperature should be raised appropriately, from 25°C to 28°C during the day and no less than 15°C during the night. 5 to 7 days before planting, the seedlings were planted, 25°C to 30°C during the day and 10°C to 13°C at night.

Fifth, water management is generally not watered in the early stage, mainly to retain water, to prevent excessive water, resulting in root or dead seedlings. After unearthing, sprinkle a layer of fine soil. If the seedlings are found to grow in length, depending on the growth condition, they can be covered with soil 1 to 2 times. When the bed surface is dry, it covers the fluvo-aquic soil. When the bed surface is wet, it covers the dry soil. In the middle and late periods, such as water shortages can be poured 25 °C warm water, until the water seepage leaves no water when the beads sprinkle a layer of medicine soil.

Sixth, after the light management unearthed, the seedlings should be exposed as much as possible. After the curtain was uncovered in the morning, the small arch sheds should be removed. Before the grass cover is covered at night, the small sheds should be covered. When it is cloudy, fill the light and lower the temperature by 3°C～5°C as appropriate to prevent leggy.

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