What fertilizer is best for Tianbao strawberries now?

Strawberry is one of the most popular fruits among consumers. It tastes sweet and delicious. In my country, it is not only commercially cultivated in a large area, but also cultivated on balconies or courtyards. Nowadays, through various forms of facility cultivation such as open fields and cold sheds, solar greenhouses, and smart greenhouses, strawberries can be produced year-round in my country. In the commercial production of strawberries, strawberries that are large and sweet are more popular and have higher cultivation efficiency. The size and sweetness of strawberries are directly related to the type of fertilization. To grow big and sweet strawberries, Farmers should grasp these three types of fertilizers: 1. Base fertilizer

Base fertilizer is the foundation for the robust growth of strawberries and forms the basis for yield and quality. Its role cannot be replaced by later top dressing. The base fertilizer for strawberries should be mainly organic fertilizer. Organic fertilizer can provide 16 essential nutrients for strawberry to successfully complete the growth cycle. Its comprehensive supply of nutrients is difficult to achieve with top dressing. At the same time, the base fertilizer must be combined with chemical fertilizers. To meet the absorption and supply of elements that are in high demand for strawberry growth.

The organic fertilizer used as base fertilizer is preferably fully decomposed farmyard manure or cake fertilizer. The dosage of farmyard manure per mu of land is not less than 5000kg, and the dosage of cake fertilizer is 200-300kg. The salt content of commercial chicken manure, pig manure, etc. , antibiotic content and heavy metal content generally exceed the standard, and its application is not recommended for high-quality strawberry production. The amount of chemical fertilizer used as base fertilizer is 30-40kg of 1:1:1 chemical fertilizer. Strawberry is a calcium-loving crop. The base fertilizer should be mixed with organic fertilizer per acre, and the dosage is 25-30kg per acre. 2. Root top dressing

Root top dressing is an important means to meet the nutrient preferences of strawberries at each growth stage. Before the strawberry blooms and bears fruit, the main growth is vegetative growth. At this time, the nutrient demand is mainly nitrogen fertilizer. Pay attention to the balanced supply of the three elements of nitrogen, phosphorus and potassium. After entering the flowering and fruiting period, the physiological activities of strawberries become vegetative growth and reproductive growth in parallel. However, for commercial production, this stage needs to promote photosynthesis as much as possible. Organic matter is transported to the fruit, forming an accumulation of yield and quality, instead of using synthetic organic matter to grow leaves. Phosphorus and potassium fertilizers are beneficial to the transportation and accumulation of nutrients to fruit organs. If nitrogen fertilizer is still applied at this stage, it will inhibit Fruit expansion and flavor formation reduce single fruit weight and sweetness.

Specifically, before flowering and fruiting, 9-10kg of urea and 4-6kg of potassium sulfate can be applied with water per acre of land. Note that it is best to stagger the application time of urea and potassium sulfate by more than one week. Because nitrogen fertilizer and potassium fertilizer will form competition (ion antagonism) during the root absorption process, excess nitrogen fertilizer will reduce the absorption and utilization efficiency of potassium fertilizer; during the strawberry fruit expansion period, 7-8kg of urea and 10kg of potassium sulfate are generally applied per mu. The frequency of topdressing is about once every 3 weeks. The specific dosage and frequency may fluctuate according to the growth status of strawberries and soil fertility. 3. Foliar top dressing

Foliar top dressing is an important means to supplement the nutrients necessary for strawberry growth. Especially after the strawberry growth enters the flowering and fruiting period, the demand for potassium fertilizer, calcium fertilizer and other fertilizers increases significantly. , at this time, the formation of strawberry yield and quality is often affected by the inability to supply these nutrients in large demand in time. At this time, external fertilization can play a good emergency role.

Top dressing of strawberry leaves The common method is to spray 0.3% potassium dihydrogen phosphate and 0.3% borax per acre of strawberries before entering the flowering and fruiting period. Potassium dihydrogen phosphate can promote the accumulation of organic nutrients produced by the leaves to the flower buds to ensure the differentiation of strawberries. The flower buds are plump and strong, and boron fertilizer can promote the quantity and quality of flower bud differentiation, thereby increasing the fruit setting rate and single fruit weight.

After the strawberry enters the fruit-bearing period, spray 0.3% potassium dihydrogen phosphate and 0.2% calcium sulfate at a frequency of about once every 10 days. The role of spraying potassium sulfate foliar fertilizer is to promote fruit enlargement. and quality formation, and the calcium fertilizer provided by calcium sulfate can improve single fruit weight and fruit storage performance. The spraying time of foliar fertilizer should be selected on cloudy, cloudy or sunny days in the evening to improve the absorption and utilization rate of foliar fertilizer.