Regulate temperature and humidity
The flowering period of strawberry is very sensitive to temperature, and the germination rate of pollen exceeds 30°C. The pistil will suffer freezing injury when the night temperature falls below 0°C. When the temperature is about 5 °C cover the middle shed, below 0 °C and then covered with a small film. In case of low temperature and low illumination, measures for supplementing light and increasing temperature shall be carried out in time.
The air humidity in the shed should be kept at about 40%. If the humidity is too large or too small, the pollination quality will be affected, which will affect the flowering and fruit setting of the strawberry. Before and after noon every day, release the air, flexibly control the size of the air outlet and the time of air release. Do not influence the temperature of the canopy due to humidity. Especially in the case of rainy weather, the humidity in the canopy needs to be damp, but at this time, heat insulation is needed. It can only be short at noon. Time goes by.
Appropriate fertilization
In the fruiting period of strawberry flowering, the plants need more phosphorus and potassium, but the nitrogen fertilizer is also important, so we must pay attention to the application amount and prevent strawberry growth. Since strawberry roots are concentrated in a 15 cm soil layer, the cultivation of small high ridges is prone to lack of water and should be combined with watering. Flowering results depending on plant growth and flowering results can take a small amount of multiple fertilizer, generally topdressing 3 to 5 times. Strawberry is not fat tolerant, and the fertilization concentration should not be too high. It should be fully irrigated during the two fertilization periods, mainly based on drip irrigation.
At the same time, some foliar fertilizers containing trace elements such as calcium, iron, zinc, etc. are sprayed on the roots, such as sea elf bio-stimulant + 99% high-purity potassium dihydrogen phosphate (phosphorus and potassium source pool), to improve strawberry fruit quality and yield. The color and hardness of the strawberries also enhance the resistance of the plants to disease and stress.
Improve pollination
During the flowering period, the wind in the greenhouse is weak, and outside insects cannot enter. Strawberry is not feasible through wind force and pollination by insects. Bee pollination is the preferred method. Dredging is better with drones, and 3 boxes with 1 drone are placed in rotation.
The bees are usually placed 7 to 8 days before flowering, and the male beehive is placed in the greenhouse so that the drone can fully adapt to the microclimate and environment in the greenhouse before flowering. After the bees were released, pesticides with low toxicity to bees were sprayed and the beehives were removed from the shed for more than three days.
Strengthen cultivation management
Remove old leaves, lateral buds, stolons. The old leaves not only consume nutrients, affect ventilation, transmit light, and are prone to morbidity, but also tend to form more vulnerable side inflorescences and small flower and small fruits. Therefore, the old leaves and lateral buds should be removed timely and appropriately, and be taken out of the park for destruction or deep burial. After drawing at the top inflorescence, select one or two well-behaved and stout lateral buds, and remove the remaining ones. Later, the side buds should also be removed in time. 8~12 leaves with effective function were reserved per plant, and the varieties with smaller leaves or branches were weak, or the spacing between the adjacent plants was large, and axillary buds and lateral branches could be retained.
Pest Control
The main diseases of strawberry during flowering and fruiting period are gray mold and powdery mildew, etc. The wet and rainy weather pays attention to dampness control and disease prevention, and at the same time, they use symptomatic agents for prevention and treatment.
Biological pesticides: You can use eugenol, Bacillus subtilis, Harz and other agents; chemical pesticides: You can use fluorobacillus esters, oxazole ether fluoroamide, azoxystrobin and other agents, these agents can both cure the above two kinds of diseases Continuous spray 2 or 3 times, once every 7 days. Insect pests mainly include locusts, red spiders, and thrips, etc. In the early stage of the outbreak, they must be blocked in time; the thrips and aphids can be treated with matrine, bactericillin, pyrethrin, etc.; spiders can use sarocallonin, combined with low toxicity. Chemical pesticides such as biphenyl phthalate, butyl fluorenyl ester, thiazolyl ketone and other agents control.
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