The strengthening of the spring management of open field strawberries is the key to promoting early fruits, high quality and high yields.
Remove cold weather coverings. When the average temperature on the day stabilizes at around 10°C, the cold-covering on the strawberry seedlings can be gradually removed. Be careful not to break flower buds. If the film is covered, when the film is uncovered, it is necessary to do a good job of hardening seedlings to prevent the sudden temperature difference from being too large and affect the growth and development of the strawberries.
Timely cultivating old leaves. After the spring, we should timely cultivating and weeding, but when the cultivator should be shallow, prevent the soil blocks from pressing down the seedlings, and clear the drains. At the same time, remove the old leaves, dead leaves and diseased leaves of the strawberries to prevent transmission of disease. .
Pay close attention to fertilizer to promote early-onset. Because strawberry roots are shallow and sensitive to fertilizers, they are prone to fertilizer damage. To prevent the use of ammonium bicarbonate, urea, compound fertilizer, or human waste should be used. The amount of use should be controlled by 5-6 kg of urea per mu, 1000-1250 kg of human waste, 10-15 kg of compound fertilizer, and watering with fertilizer once. During the fruiting period, 0.2% potassium dihydrogen phosphate solution was sprayed on the leaves for 1 to 2 times, which had a good effect on improving quality and increasing yield.
Thinning and thinning fruit. After inflorescences on the new stems of strawberry, there are usually 10-30 flowers per inflorescence, too many buds, and insufficient supply of nutrients. Therefore, after budding, thin and thin flower buds should be sparse, and another sparse flowering period should be carried out during the flowering period so that nutrient concentration can be used to supply large flowers and the fruit setting rate and fruit weight can be increased. 2 to 3 inflorescences per plant were preserved, and 3 to 5 fruit per inflorescence were appropriate.
Prevent pests and diseases. Strawberry plants are dwarf and grow on the ground, and fruiting time is long. Fruits are easy to contact with the ground and are vulnerable to pests and diseases. Integrated control measures must be adopted.
1. powdery mildew. Use 12.5% ​​of Myclobutanil 2000x or 20% Trifenin Wettable 1000x.
2. Gray mold. Use 50% nongrilled 800-fold wettable powder or 50% fast-inking wettable powder 1000 times.
3. Brown spot. Use 2% agricultural anti-120 water 200 times or 50% thiophanate 500 to 1000 times.
4. aphid. With 50% anti-inferiority WP 2000 times or 10% imidacloprid wettable powder 1500 ~ 2000 times.
5. Underground pests. Such as lotus root, lotus root, 80% trichlorfon per acre WP 200 ~ 250 grams or 40% phoxim EC 200 ~ 300 grams, watering 500 ~ 750 kg irrigation or irrigation control. Note that the use of drugs should be stopped 15 days before fruit picking to prevent poisoning.
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