Greenhouse strawberry sheds are generally carried out at daytime temperatures below 15°C. In Shandong, Henan, and other places, the shed time is from late November to mid-December. In order to make strawberry quality and high yield, it is particularly important to strengthen the management of the shed.

First, temperature management. The optimum temperature for the growth of strawberries is 18°C～26°C. Above 30°C and below 5°C all have negative effects on strawberry growth. To reach this ideal temperature in winter and early spring, it is necessary to cover the greenhouse in the greenhouse and add a small shed. And lay the film. Strive to shed the daytime temperature reached 25 °C ~ 28 °C, 5 °C above night, minimum temperature 0 °C above. If there is a high temperature above 32°C, it must be ventilated and cooled. The relative humidity in the shed is preferably maintained at 70% to 80%. The specific temperature can be as follows: before budding, during the daytime 25°C～30°C, 15°C at night; budding to flowering period, during the daytime 22°C～28°C, nighttime 10°C; after flowering, daytime 20°C～25°C, evening 5 °C; results, 15 °C ~ 20 °C during the day and 3 °C or more at night.

Second, scientific fertilization. Greenhouse strawberry has a long period of results, and it is necessary to rationally apply fertilizer on the basis of replanting basal fertilizer to meet its nutritional requirements. The topdressing method adopts the principle of “a small number of times”. From the shed to the bud, it can be fertilized and watered for about 10 days. The urea dose is 10 kg per mu, and the phosphorus and potassium fertilizers are 5-8 kg each. In addition, in the middle and late period, sprayed with organic fertilizers such as multi-element micro-foliar fertilizers or plant-powdered vegetables, natural alizarin and other organic nutrients to increase fruit weight and sugar content, so that the fruit taste is more delicious.

Third, water management. High temperature in the greenhouse, large evaporation of soil moisture, should be timely irrigation. In the early period, the outside temperature was high and the irrigation was performed in the evening. In the later period, the temperature inside and outside was low, and the irrigation was performed in the morning. After the irrigation, the room temperature was increased first, and then the air volume was increased and the temperature was lowered. Watering can not be overworked, each time you want to penetrate, after flowering, 15 days or so combined with fertilization, watering 1 times.

Fourth, light management. The intensity of light and the length of time have a great influence on the yield and quality of greenhouse strawberry. Therefore, in addition to the need to often scrub the film of the greenhouse, it is necessary to extend the lighting time as long as possible, without affecting the temperature under the premise of grass cover and other coverings as early as possible to cover the late cover. Snowy days should take some lightening measures in the greenhouse, such as installing lights to supplement the light.

Fifth, plant management. 1. Artificial pollination. Through artificial pollination, strawberries fall quickly, consume less nutrients, concentrate nutrients, develop fruits faster, have bigger fruits, and less deformed fruits. Artificial pollination is done every day from 10 a.m. to 3 p.m. with a brush pen and an anther. It is also possible to put bees in the shed. At the beginning of the flowering season, the optimum temperature for bee activities in the shed is 15°C to 30°C. 2. Pick the leaves to the inferior fruit. To reduce the loss of nutrients, ventilation and light transmission, in the growing season, the old yellow leaves and diseased leaves that are yellowed in the lower part should be removed regularly, and the pods should be removed at any time. Before flowering, the buds on the advanced sub-inflorescences should be properly removed during the flower buds separation period; in the young fruit period, the pests and fruits and malformed fruits should be eliminated in time to increase the quality and improve the quality. (Department of Agriculture, Shanting District, Zaozhuang City, Shandong Province)

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