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For a new banana farm (with 167 bananas per mu), apply at least 16.7 kg of nitrogen (N), 4 kg of phosphorus (P205), and 66.7 kg of potassium (K20) per acre. This fertilization formula is required to maintain high banana yields. In most cases, at least 80 grams of nitrogen (N) should be applied to each banana each year and it should be applied to the soil several times a year. The SPAD502 chlorophyll meter was used before fertilization because there was a certain relationship between the padding value and the nitrogen content. So when we know the chlorophyll content, we know the nitrogen content and can guide us to fertilize.
The characteristics of banana fertilization formula is that it requires more potassium. In the potassium-depleted soil, increasing potash fertilizer can increase fruit stem growth and fruit yield, and can improve fruit quality, extend storage time, and enhance disease resistance. Therefore, the application of potassium-rich compound fertilizer (such as 5--7-23 or 10-10-20) is better.
The main points of fertilizing techniques for bananas are:
(1) The newly planted banana plantation should be applied with base fertilizer, mainly organic fertilizer, and basal fertilizer commonly used acupuncture methods, applying 3000--5000 kg organic fertilizer per acre, and adding 25-30 kg of superphosphate and 15-20 Kilograms of potassium sulfate. After the first 20 days of planting of the banana plant, the first topdressing was performed. Each plant had 20 kg of manure water and 100 g of ammonium sulfate. Fertilizer was applied once a month. If the new banana can not bud, then 7 to 9 months to control fat.
(2) The overwintering bananas should be applied with basic fertilizers from December to January of the following year. 25 kg of peanut cake per acre and 200 kg of human and livestock urine for 20 days, 10 kg of superphosphate and 4000-5000 kg of organic fertilizers should be mixed. Single plant points. Then, 50 to 100 kg of banana heads were used for each plant. In the following April-June, 300 kg of manure water per mu, 300 kg of peanut cake, 15-25 kg of ammonium sulfate and 10-20 kg of potassium sulfate will be applied.
(3) Hexagon should be fertilized 5 times a year. For the first time before the occurrence of the new root (in mid-February), 20 tons of human urine, 100-150 grams of ammonium sulfate, and 250-300 grams of potassium sulfate were applied to each plant hole. The second time in April, each plant was applied. 25 kg of excrement, 200-300 g of ammonium sulphate and 500 g of potassium sulphate in case of rain; the third time in June and July, 15 kg of excrement per person, 200-300 g of ammonium sulfate, 500 mg of superphosphate The fourth time after harvesting, each plant had 20 kg of excrement, 10 kg of plant ash, or 500 g of potassium sulfate; the fifth time in October, it was dominated by organic fertilizer, and each plant had 50 to 100 kg of fertilizer. 500 g superphosphate and 300-500 g potassium sulfate to enhance the cold resistance of the plants.
The above fertilization plan is based on the experience of fertilizing banana farmers. When it is specifically implemented, appropriate adjustments should be made according to the specific local conditions (such as the age of bananas, soil fertility, and climatic conditions). In areas where conditions permit, three-way compound fertilizers for bananas can be used.
Teach you how to fertilize bananas
Teach you how to fertilize bananas. Bananas are perennial evergreen large herbs. If we calculate the yield of 2000 kg of banana fruit per mu, we need to absorb about 24 kg of nitrogen (N), 7 kg of phosphorus (P2O5) and 87 kg of potassium (K20) from the soil per mu of banana. The banana contains 5.6 grams of nitrogen per kilogram, 1 gram of phosphorus (P205) and 28.3 grams of potassium (K20), and the ratio of the three is 1:0.2:5. It can be seen that bananas are very potent potassium plants.