Strawberry has higher requirements for fertilizer and water than ordinary fruit trees. Therefore, applying enough fertilizer and applying base fertilizer is the key to high quality and high yield of strawberry. The organic fertilizer is mainly based on organic fertilizer, and the appropriate fertilizer is applied. From the point of view of the fertilizer absorption of strawberry planting, it is necessary to absorb a large amount of fertilizer in the later stage, especially phosphorus and potassium fertilizer. The decomposition process of organic fertilizer shows that a large amount of phosphorus and potassium are released in the later stage, which can meet the growth demand of strawberry. Apply 3,000 to 3,500 kilograms of fully decomposed organic fertilizer per acre or 400 to 450 kilograms of commercial organic fertilizer. At the same time, add 3-5 yuan compound fertilizer 15 to 20 kg or urea 5 to 6 kg, diammonium phosphate 15 to 20 kg, and potassium sulfate 5 to 6 kg. In principle, the bio-organic fertilizer strawberry should not be heavy, otherwise it is prone to root diseases such as root rot. Therefore, the greenhouse must be disinfected by the soil to compensate for the loss of beneficial microorganisms in the soil disinfection. When applying the base fertilizer, the application of bio-organic fertilizer is applied. 100 to 150 kg per mu. Bio-organic fertilizer is rich in organic matter and a variety of beneficial microorganisms, which can improve soil structure and physical and chemical properties, and provide sufficient nutrients for crop growth. Strawberries have shallow roots, strong fertility, large nutrient requirements, and very sensitive to nutrients. Too much or insufficient fertilization has adverse effects on growth, yield and quality. Nitrogen fertilizer can promote the formation of a large number of leaves and stolons, strengthen vegetative growth, increase fruit, and increase yield; nitrogen-deficient leaves will turn yellow, partially dry and slightly smaller than normal leaves. Phosphate fertilizer can promote flower bud differentiation and increase fruit set rate; The upper leaves of the phosphorus deficiency showed purple-red spots, and the flowers and fruits were small. Potassium fertilizer mainly promotes fruit ripening, improves sugar content of fruit and improves fruit quality. Black, brown and dry edges often appear on the edge of potassium-deficient leaves. In severe cases, it becomes burned, the old leaves are seriously damaged, the fruit color is light, and the taste is poor. In addition, strawberries are very sensitive to chlorine and should be controlled for use with chlorinated fertilizers. Applying the base fertilizer: It is necessary to fertilize the whole fertility period of the strawberry to ensure that the plant grows robustly, and has more flowering, more fruit, large fruit and high yield. Before planting, combined with deep tillage and ground preparation, the base fertilizer is generally applied. The high-quality organic fertilizer per mu is 2000~3000 kg, and the potassium sulfate type compound fertilizer is 50~60 kg. Reasonable topdressing: In order to meet the demand for various nutrients during the flowering period, generally after the strawberry begins to grow and before the flowering period, 10~15 kg of compound fertilizer per mu is applied, and the amount of base fertilizer is sufficient. During the expansion period of the berry, about 15 kg of high-nitrogen potassium compound fertilizer can be applied. After a large number of strawberries, the nutrients in the plant are lacking. In order to restore the growth of the plant as soon as possible, new roots of new leaves should be formed, and topdressing should be carried out according to the needs. The specific amount of fertilization should be determined according to the amount of fruit collected, and more fruits should be fertilized, and less seeds should be less fertilized. Spraying outside the root: According to the growth of the strawberry in the middle and late stages, the external top dressing (ie foliar spray) method is used for assisted fertilization. Spraying potassium dihydrogen phosphate or other foliar fertilizers 3~4 times in the middle and late growth stages as needed can increase the fruit setting rate, improve the fruit quality, increase the weight of single fruit, and prolong the result period. In addition, the spraying of foliar fertilizer should be carried out in the evening on a cloudy or sunny day, because the evaporation at noon is large, which is easy to cause strawberry fertilizer. This article URL: What are the main points of fertilization technology for planting strawberry in greenhouse? Product Description: Tarot Distributor,Tarot Card Accessories,Aggregator For Drone,Tarot Power Board Dongying Youjia Industry & Trade Co. Ltd. , https://www.uav55.com
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What are the main points of fertilization techniques for planting strawberries in greenhouses in spring?