The production of strawberries in the greenhouse in winter, the first picking period in February, coincided with the Spring Festival, high prices and good returns. However, winter cultivation requires strict temperature control and high level of cultivation and management. In order to explore the low-cost and high-efficient winter production of strawberries, the experiment was conducted in the greenhouse of strawberry in Liangshe Village, Xingtai County in 1996-1998. . 1, arch structure. The arch shed is composed of three parts: a wall, an arch, and an insulation. The wall is an earth structure, and the arch includes pillars, bamboo poles, and lead wire. The heat preservation part is mainly a shed film and a haystack. The arch shelter is facing south to the south with a span of 3.5 meters. The back wall is 120 centimeters high, the bottom is 70 centimeters wide and the top is 45 centimeters wide. The column is 140 centimeters high, and the lead wire is pulled horizontally and fixed on the top of the stake. One end of the bamboo pole is on the ground and the other end is fixed on the lead wire to form an arch. Insulation section, the thickness of the film is 0.04 mm, grasshopper is 5 meters long and 1.5-2 meters wide. 2, species selection. The long shelf life of greenhouses should be selected from short-term dormancy varieties, such as Chunxiang and Fengxiang. 3, soil preparation, sorghum, fertilization. Shed cultivation strawberry, in order to insulation, to limit the number of watering, inconvenient top dressing, so to apply the base fertilizer, generally per acre applied to compost chicken manure 5000 kg, 20 kg of diammonium phosphate, 5 kg of biological potash, combined with fertilization, deep turning the land, Then we make a sorghum with a width of 50 cm, a width of 40 cm at the top of the sulcus, a width of 20 cm at the bottom, and a height of 15 cm. The direction is north-south. 4, planting period and density Don't be planted later than mid-September. Generally, 8000-10000 plants will be planted per acre. When the plants are planted, the direction of the back and forth of the strawberries should be toward the outside of the plant. Do not bury the plant above the planting depth. 5, post-plant management. After the strawberries are planted, they must be watered on the same day and watered for 2-3 times within 1 week. When the new leaves grow, remove the old leaves and the sown stumps immediately. water. 6, temperature control The holding time of the arch shed was in late October. Covering the mulch about 15 days after the shed, the membrane was lifted and the grass cover was added from the beginning of December. Before the extreme low temperature (ie outside temperature below -14.5°C) in the shed Add a small 50 cm high arch to increase the insulation effect. After extremely low temperatures, it can be removed. After mid-March, grasshoppers can be removed at appropriate times, and attention should be paid to air release. Insulation at the beginning of flowering, the greenhouse temperature during the day is 25-28 °C, not less than 5 °C at night. In the initial period of heat preservation, the outside air temperature is high, and attention should be paid to the cooling during the day, from the early flowering to the mature period, the daytime temperature in the shed should be 20-25°C, and not less than 5°C at night. In the winter, greenhouses were cultivated with strawberries, and the two picking seasons were February and April respectively. At this time, other fruits were mostly stored on the stock market, while strawberries could be sold at a good price. 7, matters needing attention (1) The temperature index listed after the shed is the best range, and production should be managed, otherwise it will affect the output. (2) In case of continuous rain during the shelter period, it shall not cover grasshoppers during the day. (3) In the flower and fruit stage, 0.3% potassium dihydrogen phosphate and 0.3% urea can be sprayed, and the top dressing can be applied 2-3 times. (4) In the fruiting period of strawberry, control the gray mold of strawberry with 75% chlorothalonil or 50% Sulfuron 500-800 times. Compression Plate Instruments ,Posterior Cervical Kit,Back Cervical Kit,Posterior Cervical Instruments Jiangsu Health Medical Technology Development Co., Ltd. , https://www.medicalhos.com