First, promote flower fat. The flower bud differentiation period of mango was 1 month before flowering, and the flower bud differentiation period of Guangxi was generally in December. Fertilizer can promote flower bud differentiation before flower bud differentiation. Fertilizers should be based on available nitrogen and potassium fertilizers. The dosage should be about 20% of the annual amount. Each plant should be treated with urea and potassium chloride 0.1-0.2 kg each. (If the phosphate fertilizer uses elemental phosphorus fertilizer, the phosphate fertilizer can be used in combination with this fertilizer. In general, 1.6-1.8 kg of calcium magnesium phosphate fertilizer is applied per plant). Can be combined with foliar fertilizer, sprayed with 0.2-0.3% potassium dihydrogen phosphate solution, sprayed to the leaves covered with water droplets, dripping drops shall prevail, continuous spray 2-3 times, each spray interval 7-10 days . Second, strong flower fat. Mango trees have a large amount of flowering and consume more nutrients. They should apply top-dressing nitrogen fertilizer once at the flowering stage. Fertilization time depends on tree vigor, plant status, and weather. However, fertilization must be done in a timely manner. It is advisable to start fertilizing when 50% of the last shoots of plants are budding. Otherwise, if the tree grows strong and the temperature rises, fertilizing too early can induce excessive vegetative shoots or mixed squid sprouting, reducing flowering. Zhanhua fertilizer can use urea or compound fertilizer, each plant applies urea or compound fertilizer 0.1-0.15 kg, can be combined with foliar spray 0.1% borax, 0.2-0.3% potassium dihydrogen phosphate solution. If the application of flower fertilizer is sufficient and the plant grows vigorously, the fertilizer may not be applied. Third, strong fruit fertilizer. About 30 days after Xiehua, the rapid growth and development of the fruit, during the rapid growth of young fruit, it is necessary to chase the strong fruit fertilizer to meet the fruit development needs of nutrients. Generally, each plant applies 0.3-0.4 kg of urea and 0.2-0.3 kg of potassium chloride. (If the fertilizer is not used in combination with phosphate fertilizer, this time, it can be used in combination with 1.6-1.8 kg of calcium magnesium phosphate fertilizer). Can be combined with foliar fertilizer, using 0.2-0.3% urea plus potassium dihydrogen phosphate solution spray, spray to the foliage covered with water droplets, dripping droplets prevail, continuous spray 2-3 times, each spraying interval 7- 10 days. Fourth, before and after fruit picking shoot tip fertilizer. Mangoes have a large amount of results and consume more nutrients. If they are not supplemented with fertilizers in time, it will be difficult to restore tree vigor and affect the sprouting of autumn shoots. Fertilization before and after fruit picking is critical, and it is better to apply it twice. The first time before and after fruit harvesting, 0.2-0.3 kg of urea and 0.1-0.2 kg of potassium chloride per plant can be applied to promote the restoration of tree vigor and germinate as soon as possible. When the second fertilization began to turn green at the last tip, it was buried with weeds in combination with soil. Each plant applied 25-50 kg of organic fertilizer and 0.5 kg of ternary compound fertilizer. Can be combined with foliar application of 0.3% potassium dihydrogen phosphate solution 1-2 times. Fertilization method: The soil fertilization mainly adopts the ring groove and the ditch method, and covers the soil after the application. (1) Ring groove fertilization: Excavation of the annular or semi-annular groove on the outside of the crown canopy width and depth of 15-20 cm. (2) Trench fertilization: Each year rotates alternately on the outside of the canopy drips symmetrically digging two parallel strips, width and depth of 20-30 cm, expanding the depth of the ditch is more than 60 cm. Smart Nucleic Acid Diagnoostic Cloud Service Nucleic Acid Diagnoostic,Multiplex Quantitative Pcr,Quantitative Pcr Instruments,Real Time Pcr Machine Thermal Cycler Jiangsu Dinai Bioengineering Co.,ltd. , https://www.dinaipcr.com
For every 1000 kg of fresh mangoes produced, 1.74 kg of nitrogen, 0.23 kg of phosphorus, and 2.0 kg of potassium are required. The most needed amount is potassium, followed by nitrogen and phosphorus. Production is generally based on nitrogen: phosphorus: potassium = 1:0.5:0.5-1 application. However, the manure trees with different tree ages, different regions, and different yield levels often have large changes in recommended fertilizers, which should be appropriately adjusted according to local conditions. Mango tree fertilization results mainly in four periods: