When the average temperature of unbonded membranes stabilizes at about 10°C on the same day, the coverings for overwintering and wintering must start to be removed; care should be taken to prevent the flower buds from breaking when they are peeled off; if the agricultural film is covered, it should be exposed during the day, covered at night, and then gradually removed. , To avoid excessive temperature difference, affect the normal growth of strawberries; After uncovering the cover, the leaves, diseased leaves, and old leaves should be promptly removed to improve the light transmission conditions and prevent the occurrence of diseases.
In the spring of cultivation, we shall timely cultivate weeds and loosen soil in order to avoid injuring the roots and prevent the clods from squeezing the seedlings. The middle cultivator shall be combined with the Qinggou polders to clean up the drains, the gutters, and the gutters in time. Ditches and trenches, etc., to eliminate waterlogging; after the strawberry grows, it is necessary to cut off old dry leaves and diseased leaves in time, and bring out concentrated fertilizers from outside the field to prevent recurrence of diseases.
Timely topdressing in mid-to-late March, with the combination of watering topdressing once fat, applying 10-15 kg of urea per mu or 20-30 kg of compound fertilizer; 10 to 15 kg of fertilizer; In addition, spraying 0.3 to 3% of potassium dihydrogen phosphate two or three times during the fruiting period of the flowering stage will help improve yield and quality.
The flowers that bloom on the inflorescences of the sparsely flowering buds are good, and the fruits are large and mature. Therefore, after budding, the buds must be thinned to reduce nutrient consumption, so that the fruits are large and tidy, mature early and of good quality. Discard 20% to 25% of late weak buds.
After the pests begin to spring, the underground pests begin to move. If tigers, locusts, and golden worms are found to harm the roots and stems of strawberries, measures can be taken: 1 Shallow pods in the early spring to effectively eradicate the eggs and weeds in the weeds and soil. Larvae; 2 per acre with 90% crystal trichlorfon 200 g or 50% phoxim emulsion 200 to 300 g, 500 to 700 times water, then watering the root; leaf spot, gray mold, bud blight, Powdery mildew and other diseases, timely prevention in the early spring, can be used 50% carbendazim or 70% thiophanate 500 ~ 800 times liquid spray, virus disease is mainly transmitted by aphid poisonous, can be used as soon as possible with 40% omethoate 800 times liquid spray control, pay attention to prohibit the use of chemical pesticides during fruit ripening.
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