Strawberry water and fertilizer integrated fertilization technology

Strawberry is a perennial herb with a shallow root distribution. More than 80% of the roots are distributed in a soil layer 5-20 cm deep within 15 cm of the new stem. Within one year, it has 2-3 growth peaks, which are in the beginning of inflorescence and after fruit harvesting. Strawberries are usually cultivated in ridges. The height of the ridge is generally 25-30 cm, the width of the ridge is 60 cm wide, and the width of the furrow is 30 cm. After the ridge is raised, the value is set at 10 cm from the edge of the ridge, the plant spacing is 20-25 cm, and the row spacing is 30-40 cm. Strawberries are most suitable for drip irrigation under the film. When using drip irrigation, the distance between the tips is 20-30 cm, the flow rate is 1.5-2.5 liters per hour, and a dropper is placed between the two rows of strawberries. The length of the dropper can be up to 100 in the field. Above the meter.

Moisture management: Because the roots of strawberries are shallow, frequent irrigation is required to ensure that the soil in the root zone is wet, with a depth of 30 cm. The drip irrigation time is usually 0.5-1 hour each time, depending on the flow rate of the dripper. Micro spray every 5-10 minutes. Do not over-irrigation, leaching nutrients. There must be drainage channels in the field to drain the water in time.

Nutrient management: Strawberries are plants that are vegetatively grown and reproductively grown. In the production process, organic fertilizers should be applied as base fertilizers. Strawberry requires lower nitrogen and higher phosphorus in the flowering and young fruit growth period, and maintains higher nitrogen levels after flower bud differentiation begins.

When planting strawberries, the basic fertilizer is generally emphasized. If the target yield is 1.5 tons per mu, 1-1.5 tons of decomposed organic fertilizer, 20 kg of general-purpose high-concentration sulfur-based compound fertilizer, and 40 kg of superphosphate should be applied per mu. Fertilizer should be applied to the soil surface, and the soil should be ridden.

After planting, the water-soluble fertilizer is applied by drip irrigation. Formulated to flowering stage high-phosphorus formula fertilizer (such as nitrogen, phosphorus, potassium formula 15:30:15 + trace elements) 6-8 kg per mu, divided into 2 applications, each time 3-4 kg, every 7- Apply once every 10 days.

From the flowering to the fruit setting period, use balanced formula fertilizer (such as nitrogen, phosphorus, potassium formula 20:20:20 + trace elements) 5 kg per acre, apply in 2 times, 2.5 kg each time, every 7 days.

From the fruit set to the end of the harvest, use high potassium formula (such as nitrogen, phosphorus, potassium formula 14:14:30 + trace elements) 3-5 kg ​​each time, every 10 days until the end of the harvest.

According to the actual situation of the soil, calcium and magnesium fertilizers can also be added appropriately. The calcium fertilizer can be 0.5% calcium nitrate solution, and the magnesium fertilizer can be diluted with 1% magnesium sulfate solution every 7 days, and then applied 2-3 times.

Provincial Agricultural Materials Application Technology Advisory Group Expert, Zhejiang University Professor Shi Weiyong

This article URL: Strawberry Water and Fertilizer Integrated Fertilization Technology

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