When the outside night temperature falls to about 8 °C when the beginning of insulation, from late October to early November for the strawberry cultivation of greenhouse cultivation suitable period (closure period appropriate). Insulation is too early and the indoor temperature is high, which is not conducive to the differentiation of flower buds. If the plants are too late, the plants are dormant and the plants are dwarfed, which is unfavorable for normal results. EVA membrane and multi-functional non-drip membrane are suitable for greenhouse membranes. When the greenhouse temperature is lower than 5°C at night, multi-layer insulation is applied. After the greenhouse membrane is covered, the mulching is generally performed after the top dressing is applied at the seedling stage (mid-November and mid-November). Micropipettes or hoses are then laid on the surface to cover the mulch. The mulch is preferably 0.03 to 0.05 mm black opaque polyethylene film. .

The shed interior management mainly grasps the following 7 points:

Temperature and humidity management. In the initial period of heat preservation, the general daytime temperature is controlled between 28°C and 30°C; the nighttime temperature is controlled between 12°C and 15°C, and the minimum is not below 8°C; the indoor humidity is controlled between 85% and 90%. The flowering period is usually controlled at 22°C～25°C during daytime. The maximum temperature cannot exceed 28°C. Too high or too low temperature is not conducive to pollination and fertilization; the night temperature is appropriate at about 10°C, the minimum temperature cannot be lower than 8°C, and the night temperature exceeds 13C, Axillary buds are degraded, stamen and stamen development are hindered; indoor humidity is maintained at 50% to 60%, and excessive humidity may cause poor pollination, so even in cold winter days, use high temperatures at noon to expose. Membrane ventilation, to reduce the humidity within the greenhouse.

Fertilizer management. After the strawberry sheds in greenhouses are warmed, it is at a flower bud development stage, and budding, flowering, and fruiting are soon followed. After the top inflorescences are harvested, the inflorescences are pumped and flowered, and the plants are heavily burdened. If they are not fertilized in time, they are prone to premature aging. Topdressing is carried out at least 4 times, respectively before flowering, during fruit enlargement, during the occurrence of lateral inflorescence, and during the result of lateral inflorescence, applying 45% NPK fertilizer per acre 10 to 15 kg, and every 7 to 10 Spray 0.3% urea and 0.3% potassium dihydrogen phosphate liquid fertilizer once a day.

Humidity in the shed is very high, which easily gives people an illusion that there is no shortage of water. In general, watering is performed before and after the cover film, and then combined with topdressing or in the early morning if the edge of the new leaf does not spit water. Greenhouse strawberries are particularly suitable for drip irrigation. Pay special attention to keeping the soil moist during fruit development.

Spraying gibberellin. After the cultivation was started to incubate, 2 new leaves were developed and 30% budding was performed for the first gibberellin treatment to promote elongation of the pedicel, which was conducive to pollination and fertilization. Each plant uses 3 to 5 ml/kg or 5 to 8 mg/kg gibberellin and is sprayed on the seedlings. After 7 days, look at the elongation of the inflorescence and treat it again.

Plant finishing. During the growth period, each strawberry leaf is maintained at 8 to 10 pieces. Generally, in addition to the main shoots, 1 to 2 lateral shoots are retained, and excessive lateral buds occurring in the shoots must be removed early. Pests and leaves, old leaves and stolons should be stripped in time to ensure that the nutrients are supplied to the fruit. Appropriate fruit thinning during young fruit period, eliminating young fruit above the fourth inflorescence of each inflorescence, mainly fruiting fruit, small fruit, and malformed fruit. In the end, the first inflorescence leaves 12 to 15 fruit, and the second inflorescence leaves 8 to 10 fruits, leaving 20 to 25 fruits per plant.

Strengthen pest control. During this period, high temperature, high humidity, powdery mildew, gray mold, anthrax, etc. are prone to occur and should be strengthened. Sulfur fumigant (50g of 180m2 sulfur) can be used for fumigation at night every 7 days; or 4 smokers of 180m2 can be treated with a smoke-reducing agent; or 20% can be used to make 100g 800-1000g Double spray control. The main pests are aphids, cockroaches, etc., which can be trapped and killed by yellow insect traps, etc.; or sprayed with 10% Avi® 1500 times liquid and 10% imidacloprid 3000 times; 48% of Bass pests use 48% of Lost. Liquid control.

Put the bees pollinate. In late November, the flowering period was reached. Within each standard shed (30 meters and 6 meters), a bee was released to increase the pollination rate of strawberry flowers and reduce the production of malformed fruit. The common method of artificial pollination is to use a soft-brush to lightly spread in the open flower center, or in the flowering period, use a fine feather duster to skim over the inflorescence.

Apply carbon dioxide fertilizer. Conditional carbon dioxide fertilization can be applied to the strawberry plants with carbon dioxide granules in mid-November. Applying 50 kilograms per acre can significantly increase plant resistance and increase yield.

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