What are the effective methods for quickly sweetening strawberries
SummaryQuickly sweetening strawberries requires rational fertilization and good management during the growing period. The specific methods include: rationally applying organic fertilizer and phosphorus-potassium fertilizer during the growing period, dripping 4-8 jin of Hawei Flower per mu after transplanting and survival, spraying Huaduole and Niucui Calcium Boron at the bud stage, spraying Guoduole and Niucui Calcium Boron after flower drop, dripping 8 jin of Hawei Fruit per mu during the fruit enlargement stage, maintaining about 10 hours of sunlight per day, actively preventing premature senescence, and effectively controlling pests and diseases, etc.
1. Good soil management and rational fertilization can quickly sweeten the fruit
1. For strawberry coloring and enlargement, the soil must first be plowed and disinfected. During the strawberry growing period, organic fertilizer and phosphorus-potassium fertilizer can be applied together, which can achieve the effect of sweetening and increasing yield.
2. When planting, more organic fertilizer, phosphorus-potassium fertilizer, Fugen biological bacterial fertilizer, etc. can be applied, which is beneficial for strawberry rooting, enhancing resistance, repairing soil continuous cropping obstacles, and preventing soil compaction. Organic fertilizer contains nitrogen, calcium, magnesium, phosphorus, potassium, sulfur and various other trace elements needed by strawberries, and these components cannot be satisfied by chemical fertilizers.
3. However, organic fertilizer must be fully decomposed, otherwise it will be detrimental to the robust growth of the crop. When strawberries lack phosphorus, the plants will grow poorly, and the leaves, flowers, and fruits will become smaller. When strawberries lack potassium, the fruit color will become lighter and the taste will be poor. The fertilization amount per mu is: 4 jin of Maisute, 200 jin of potassium sulfate compound fertilizer, and 600 jin of organic bacterial fertilizer, mixed evenly and applied as base fertilizer.
2. Supplementing nutrients can quickly sweeten the fruit
After strawberry transplanting and survival, 4-8 jin of Hawei Flower can be drip-irrigated per mu, and Naipu 9 and Naibai can be sprayed 2-3 times, which is beneficial for promoting flower bud differentiation. At the bud stage, Huaduole and Niucui Calcium Boron can be sprayed. After flower drop, Guoduole and Niucui Calcium Boron can be sprayed. During the strawberry enlargement stage, 8 jin of Hawei Fruit can be drip-irrigated per mu, which is beneficial for promoting rapid fruit enlargement, coloring, and sweetening. After the first crop of fruit is harvested, the above formulas can be used alternately.
3. Good temperature and sunlight management can quickly sweeten the fruit
For greenhouse strawberry cultivation, the suitable daytime temperature is 25-28°C, and the suitable nighttime temperature is 10-12°C, which should not be lower than 8°C. Entering the flowering stage, the suitable daytime temperature is 23-25°C, and the suitable nighttime temperature is 8-10°C. Entering the fruit enlargement stage, the suitable daytime temperature is 20-25°C, and at night it should not be lower than 5°C.
Strawberries need about 10 hours of sunlight. If light is insufficient, reflective film, electric lights, etc. can be installed. During the flowering stage and before fruit harvesting, too much water should not be applied. During this period, ventilation can be carried out every day, which is beneficial for reducing humidity.
4. Preventing premature senescence
When planting, old leaves should be removed in time, fruits should be harvested, and fertilization and watering should be rational. For those with relatively light leaf color, nitrogen fertilizer needs to be applied as a top dressing, and then 4-8 jin of Hawei Tong can be drip-irrigated per mu. For plants with poor development and few flowers, phosphorus fertilizer needs to be applied as a top dressing, and then 4-8 jin of Hawei Flower can be drip-irrigated per mu. For small fruits that enlarge slowly, potassium fertilizer needs to be applied as a top dressing, and then 8 jin of Hawei Fruit can be drip-irrigated per mu. For relatively soft and small fruits, calcium, magnesium, etc. need to be supplemented in the flowers and leaves, and then 8 jin of Haweite can be drip-irrigated per mu.
5. Pest and disease control
During the flowering and fruiting period of strawberries, red spider mites can be controlled with etoxazole, aphids can be controlled by spraying Nuoji, green worms and noctuid moths can be controlled with matrine, Bacillus thuringiensis, etc., gray mold can be controlled in the early stage with Huibike and clove carvacrol, and for more serious diseases, procymidone smoke agents can be used for fumigation. Powdery mildew can be controlled with Zhuanshi, Gongzu, bupirimate, etc., which is beneficial for the robust growth of strawberries and has a very good effect on strawberry enlargement, coloring, and sweetening.