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Greenhouse cucurbita breeding technology
First, nursery preparation. Seedlings use nutritious seedlings, nutrient soups are made of waste plastic sheets or kraft paper, and are made into cylinders with a diameter of 12 cm and a height of 14 cm, or they can directly purchase special nutrients on the market. The nutrient soil is prepared, and the nutritious soil is mostly made up of 50% of the arable soil, plus 30% of the decomposed rot and 20% of the decomposed manure. The mixture is evenly mixed and sieved. In addition, urea and superphosphate can be properly added as supplementary fertilizer. . Then, fill the nutrient bowl with the configured nutrient soil and do appropriate repression. Second, soaking germination and sowing. Before seeding, the seeds must be screened and air-dried. Hot water of about 55°C should be used for hot seeding. Stir constantly till not hot until 20-30 minutes. Continue soaking in clean water for 8-10 hours. Then, remove the seeds, wash them properly, and place them in a place of 28-30°C in a wet gauze for germination. After about 2-3 days, the buds can be basically neat and then they can be sown. Before sowing, it is necessary to pour water into the nutrient bowl. After the water seeps, use a wooden stick to drill a hole with a diameter of 2 cm and a depth of 6-7 cm in the middle of the nutrient bowl, and then put the seed of the bud into the hole. One grain per well should not be placed upright so as to prevent future seeds from being “hatched†unearthed. After sowing, the sifted fine soil is covered or slightly raised, with a thickness of about 3 cm, and then the nutrients are placed one by one in the seedbed. Third, seedling management. Due to the high temperature outside the greenhouse during autumn and winter cultivation of the solar greenhouse, measures should be taken to reduce the temperature after sowing. Bamboo rafts, wooden supports and other objects shall be erected on the surface of the seedlings to cover the old haystacks, straw mats, etc., and shall be returned at sunny noon. Cooling, avoid direct light, in order to reduce the incidence of virus disease in seedlings, rainy days should be promptly back to cover, to prevent the rain. Generally at 26-32 °C temperature, after 3-4 days seedlings can be basically out. From the seedlings to the establishment of the colony for 25 to 30 days, the “three defenses†should be based on the prevention of high temperatures, the prevention of leggy seedlings, and the prevention of rain soaking; at the same time, attention should be paid to the elimination of viral vectors, aphids, to ensure Miao Qimiao strong.