The cultivation of strawberries in a solar greenhouse promotes early ripening of strawberries. The period of fruit picking is from mid-December to March of the following year. The production of off-season production is listed on the market before and after the Spring Festival. The benefits are very significant. First, the selection of improved varieties has the most use of Fengxiang a few days ago, Chunxiang, Jingxiang, and Turdela are also more. Strawberries have strong self-ripping power. If they are paired with 1-2 other pollinated varieties, they can increase production. Second, the selection of robust seedlings strawberry seedlings susceptible to viral disease, the best selection of virus-free seedlings. The virus-free seedlings have strong growth potential, strong disease resistance, good quality and high yield. Strong seedlings have a standard of 5–6 healthy and complete leaves, with a rhizome of 1–1.5 cm thick, with a lot of white color, and plants that are stout and weigh 25–30 grams per plant. Third, scientific colonization 1. After soil preparation, 5,000 kg of organic fertilizer is applied per acre, and 50 kg of superphosphate or 40 kg of NPK fertilizer is added. The high loft runs north-south, with a width of 60 cm at the bottom, a width of 40 cm at the top, a gap of 20 cm between the turns, and a height of 15–20 cm. 2. Planting time, density of planting time from mid-August to early September, the density is based on the growth potential of the species. Each row is planted with two rows of 60 cm and 20 cm in size, with a spacing of about 15 cm, and 8000-12,000 plants per acre. 3. Before planting techniques, old leaves, diseased leaves, and stolons should be removed before planting; when planting, they must bow back toward the outside of the plant; the depth should not be buried and the roots should not be rooted. 4. After planting, the water should be poured after the planting and the water should be replenished for 2-3 days. After flowering, it will enter flower bud differentiation stage, and fertilizer and water management should be strengthened to control water and nitrogen. In order to prevent seedling growth, 15 kg of NPK fertilizer can be topdressed to promote flower bud differentiation. Fourth, insulation and indoor management Holding time When the outside night temperature falls to 8°C, insulation should be started. The northern part of October is suitable for thermal insulation. Insulation is too early and the indoor temperature is high, which is not conducive to the differentiation of flower buds. If the plant is dormant, it will cause dwarfing of the plants and the normal growth and results. 2. In the initial period of temperature and humidity in the room, the temperature is relatively high to prevent the strawberry from entering hibernation. Generally controlled at 28-30 °C during the day, the maximum does not exceed 35 °C; night temperature 12-15 °C, the minimum is not less than 8 °C. This period of indoor humidity control in 85% -90%. The flowering period has relatively strict requirements on temperature and humidity. Generally, it is controlled at 22-25°C during the day and the maximum temperature does not exceed 28°C. Excessively high temperature is not conducive to pollination and fertilization. The night temperature is around 10°C and the minimum is not lower than 8°C. The indoor humidity is controlled at about 40%. Fruit enlargement period to maturity, affected by temperature. The temperature is too high, the fruit develops quickly and matures earlier, but the fruit is smaller. The more appropriate temperature is controlled during the day at 20-25 °C, 6-8 °C at night; indoor humidity control at 60% -70%. 3. After strengthening the management of fertilizer and water in the top inflorescence, when the inflorescences are pumped and flowered, the plants are overburdened. If fertilizers are not applied in time, premature aging and dwarfing can easily occur. At this time topdressing at least 4-5 times, with NPK fertilizer is the best, each acre 10 kg. In general, shallow water is poured 1 time before the heat preservation and before the cover film, and then combined with topdressing and then watered. 4. The application of gibberellin to gibberellin is the use of external forces to prevent or break the dormancy of strawberries and promote the extraction of petioles and inflorescences. 1-2 times, the concentration is 5-1010-6; the spraying density of shallow dormant varieties should be low, and vice versa. 5, plant management As the plant growth will produce many lateral buds, it should be removed early. In addition to the main bud, generally retain 2-3 lateral buds. The pest leaves, old leaves and stolons should be removed at any time. Flowering and fruit thinning measures should be taken during the flowering period to eliminate secondary florets and weak flowers. After the result, the diseased fruit, small fruit, and deformed fruit were eliminated, and finally the first inflorescence retained about 12 fruits, and the second inflorescence retained about 7 fruits. 6, auxiliary pollination must be artificially assisted pollination, otherwise it will produce a large number of malformed fruit. Commonly used methods are: use a soft-brush to gently apply in the open flower center, or in the flowering period, use fine hairs to gently wipe on the inflorescence. If you put bees indoors, the effect is better. V. Diseases and Insect Pests Prevention Commonly occurring diseases of strawberries in greenhouses include gray mold, powdery mildew, bud blight, and viral diseases. Insect pests are mainly locusts and red spiders. Its control methods: gray mold can be used 50% carbendazim 1000 times, spray control; powdery mildew available 70% thiophanate-methyl 1000 times, sprayed before flowering; virus disease can use virus-free seedlings. Disinfecting the continuous cropping soil can control aphids. It should be noted that it is forbidden to spray pesticides during flowering and to prevent the occurrence of malformed fruit.
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