How to sweeten strawberries quickly

Strawberry rapid sweetening needs reasonable fertilization, good management in growth period, the specific methods are: reasonable application of organic fertilizer and phosphorus and potassium fertilizer during growth period, 4-8 catties of harvey flowers per mu after transplantation, spraying flowers and calcium and boron in bud stage, spraying fruit and boron in bud stage, 8 catties of harvey fruits per mu in strawberry expansion period, sunshine for about 10 hours every day, active prevention of premature senescence, effective control of diseases and insect pests, etc.

I. Good soil management, reasonable fertilization can quickly sweeten

1. Strawberry coloring and expansion should first be tilled and disinfected. During strawberry growth, organic fertilizer and phosphorus and potassium fertilizer can be combined to increase sweetness and yield.

2. Organic fertilizer, phosphorus and potassium fertilizer, root biological fertilizer, etc. can be applied when planting, which is beneficial to strawberry rooting, enhancing resistance, repairing soil continuous cropping, preventing soil hardening, etc. Organic fertilizer contains nitrogen, calcium, magnesium, phosphorus, potassium, sulfur and other trace elements required by strawberries, which cannot be satisfied by chemical fertilizer.

3, but the organic fertilizer must be fully decomposed, otherwise it will not be conducive to the healthy growth of crops, when the strawberry phosphorus deficiency, plant growth and development will be poor, leaves, flowers, fruits will become smaller, when the strawberry potassium deficiency, fruit color will become lighter and taste bad, fertilizer dosage per mu: 4 jin pulse element, 200 jin potassium sulfate compound fertilizer, 600 jin organic bacterial fertilizer, mixed evenly after the application of base fertilizer.

Second, supplement nutrition can quickly sweeten

After strawberry transplantation and survival, drip irrigation of 4-8 catties of Harvey flowers per mu, spray 2-3 times of Naipu 9 and Naibai, which is conducive to promoting flower bud differentiation, spray flower Duole and calcium boron in bud stage, spray fruit Duole and calcium boron in flower withering stage, drip irrigation of 8 catties of Harvey fruits per mu in strawberry expansion stage, which is conducive to promoting rapid expansion, coloring and sweetening of fruits. After picking the first crop of fruits, the above formula can be used alternately.

Third, do a good job of temperature and sunlight management can quickly sweeten

The suitable temperature for strawberry planting in greenhouse is 25-28℃ in daytime, 10-12℃ at night, not lower than 8℃, entering flowering stage, 23-25℃ in daytime, 8-10℃ at night, entering fruit expansion stage, 20-25℃ in daytime, and not lower than 5℃ at night.

Strawberry sunshine needs to be maintained for about 10 hours. If the light is insufficient, reflective film and electric lamp can be installed. It is not advisable to pour too much water before flowering and fruit picking. During this period, air can be released every day, which is conducive to reducing humidity.

IV. Prevention of premature aging

When planting, it is necessary to timely remove the old leaves, harvest the fruits, and fertilize and water reasonably. If the leaves are light in color, nitrogen fertilizer shall be applied, and then drip irrigation shall be applied to 4 -8 jin Harvey per mu. If the plants are poorly developed and have few flowers, phosphorus fertilizer shall be applied, and then drip irrigation shall be applied to 4-8 jin Harvey flowers per mu. If the fruits are small and slow to expand, potassium fertilizer shall be applied, and then drip irrigation shall be applied to 8 jin Harvey fruits per mu. If the fruits are soft and small, calcium and magnesium shall be supplemented per mu. Then drip irrigation shall be applied to 8 jin Harvey.

V. Prevention and control of diseases and insect pests

Strawberry in the flowering and fruiting period, red spider can be used to control etoxazole, aphids can be used to spray control, green insects, moths can be used to control matrine, Bacillus thuringiensis, etc., gray mold disease early available gray Bike and butyl carvacrol control, more serious disease available pythium fumigant smoke, powdery mildew available to earn fruit, attack resistance, ethirimol sulfonate and other control, conducive to the healthy growth of strawberries, for strawberry expansion, coloring, sweetening play a very good effect.