Strengthening the management of strawberries in the spring is the premise and basis for improving strawberry production and quality that year. The strawberry spring tube mainly focuses on the following tasks.
First, remove the cold cover. When the average temperature on the day stabilized at about 10°C, the overwintering cover was removed and it was removed in mid-to late March. Do not break the strawberry flower buds during operation. Use bamboo rakes and other ridges along the strawberry to gently open the cover. For example, if the film is covered with a cold film, it is necessary to do a good job before the film is uncovered. When the temperature is high, the film is covered, and the time is gradually shortened. After a time of 5-7 days, the film can be completely removed. . The purpose of doing so is to prevent sudden changes in ambient temperature, affecting the normal growth and development of strawberries.
Second, cut off the old leaves in the early cultivator. Cultivate and weed in time after spring to promote strawberry growth and development. The cultivator should be shallow so as not to damage the roots and prevent the soil from being pressed down. At the same time, the cultivator clears the drains to prevent waterlogging. Dry old leaves and diseased leaves must also be cut off to improve the air and light conditions of the plants. The debris should be collected or burned to prevent the spread of pathogenic bacteria.
Third, promptly promote fertilizer to promote premature hair. After the spring begins, the temperature gradually rises, and the strawberry begins to grow and gradually accelerates. The timely application of tree fat and fertilizer before flowering can promote the early growth of the plant, form a new leaf area as soon as possible, increase the number and quality of effective flowers, and increase the fruit setting rate. Due to the shallow root system of strawberry, it is sensitive to fertilizer reactions. To avoid the application of ammonium bicarbonate, ammonium sulfate and other fertilizers, urea and compound fertilizers should be the mainstay. In mid-to-late March, the combination of watering 15 kg of urea or 15-20 kg of compound fertilizer can be applied per acre. In mid-April, the first time to enter the flowering stage, top-dressing once again takes phosphorus and potassium as the main fertilizer, and 10 kg of compound fertilizer is applied per acre. During the flowering period, spraying with 0.2% potassium dihydrogen phosphate for 2 or 3 times, each time for about 10 days, can increase the quality and increase the yield. In combination with fertilization, pour small water once before budding, and then pour small water once during the fruit enlargement period. Don't flood with water, and use shallow cultivator after watering to increase temperature.
Fourth, sparse buds increase quality. The flowers that bloom first on the inflorescence of strawberry are good, big and mature; late flowers often do not form fruits and become ineffective flowers. Even if some can form fruits, they are inefficient because the fruits are too small to be harvested and have economic value. . Therefore, after the budding of the strawberry, the thin buds should be sparsely removed, so that the flower buds on the inflorescence are separated from each other and the harvest is easy. It can eliminate 20%-25% of late and weak flower buds to reduce nutrient consumption, so that the nutrients can be concentrated to supply the first flowers and fruits, and the strawberry fruit can be large, orderly, mature and relatively concentrated, and improve quality.
Fifth, strengthen pest control. If there is a lot of rain in the spring and the humidity in the field is high, it is prone to diseases. There are mainly leaf spot, gray mold, verticillium wilt, virus disease, bud blight, powdery mildew, etc. It can be controlled in the early spring, spraying 200 times Bordeaux or 50% carbendazim 500-800 times. The virus disease is mainly to control aphids. For ground tigers, cockroaches, cockroaches and other insect pests can be used 1000-1500 times phoxim water to kill or use 2000 times the dipterex solution to kill.
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