First, the characteristics of fertilizer: 3 years old saplings should be based on nitrogen fertilizer, assisting the right amount of phosphate fertilizer. 3 to 6 years old and early fruit saplings, in the fertilization should pay attention to nitrogen, phosphorus and potassium. Trees above 7 years old enter the fruiting stage, need to increase nitrogen, phosphorus, potassium, and add potassium fertilizer during fruit growth stage, which can improve fruit yield and quality. During the growth and development process, due to the short growth period of the cherry tree fruit, it has the characteristics of rapid and concentrated fertilizer. From leaf development, flowering, fruit development to maturity, it is concentrated in April to June, and flower bud differentiation is also concentrated in a short period after harvest. Therefore, we should pay attention to two key periods of autumn fertilization and spring topdressing.
2. Fertilization technology: Under the medium fertility level, the annual fertilization amount is 2500-3000 kg of organic fertilizer (or 350-400 kg of commercial organic fertilizer), 13-15 kg of nitrogen fertilizer, 5-7 kg of phosphate fertilizer, and 7-9 of potassium fertilizer. kilogram. Organic fertilizers are used as base fertilizers, nitrogen and potassium base fertilizers and secondary topdressing, phosphate fertilizers are all applied, and fertilizers and farmyard manure (or commercial organic fertilizers) are mixed. Base fertilizer: The base fertilizer is mainly organic fertilizer, with appropriate quantitative fertilizer. Generally, the farmer employs 2,500-3,000 kilograms of farmer's fertilizer or 350-400 kilograms of commercial organic fertilizer, 5 kilograms of urea, 11-15 kilograms of diammonium phosphate, and 4-5 kilograms of potassium sulfate. Top dressing: topdressing during flowering: 11-12 kg of urea and 6-8 kg of potassium sulfate. Berry swell period topdressing: 8-9 kg of urea and 4-5 kg ​​of potassium sulphate. Top dressing: 4-5 times a year, generally 2 times in the early growth period, mainly nitrogen fertilizer, 2-3 times later, mainly phosphorus and potassium fertilizer, can be sprayed 0.3%-0.5% urea, 0.2%- 0.3% potassium dihydrogen phosphate, 0.1%-0.3% borax.
Huaxian County Fertilizer Station Yue Xiuli
2. Fertilization technology: Under the medium fertility level, the annual fertilization amount is 2500-3000 kg of organic fertilizer (or 350-400 kg of commercial organic fertilizer), 13-15 kg of nitrogen fertilizer, 5-7 kg of phosphate fertilizer, and 7-9 of potassium fertilizer. kilogram. Organic fertilizers are used as base fertilizers, nitrogen and potassium base fertilizers and secondary topdressing, phosphate fertilizers are all applied, and fertilizers and farmyard manure (or commercial organic fertilizers) are mixed. Base fertilizer: The base fertilizer is mainly organic fertilizer, with appropriate quantitative fertilizer. Generally, the farmer employs 2,500-3,000 kilograms of farmer's fertilizer or 350-400 kilograms of commercial organic fertilizer, 5 kilograms of urea, 11-15 kilograms of diammonium phosphate, and 4-5 kilograms of potassium sulfate. Top dressing: topdressing during flowering: 11-12 kg of urea and 6-8 kg of potassium sulfate. Berry swell period topdressing: 8-9 kg of urea and 4-5 kg ​​of potassium sulphate. Top dressing: 4-5 times a year, generally 2 times in the early growth period, mainly nitrogen fertilizer, 2-3 times later, mainly phosphorus and potassium fertilizer, can be sprayed 0.3%-0.5% urea, 0.2%- 0.3% potassium dihydrogen phosphate, 0.1%-0.3% borax.
Huaxian County Fertilizer Station Yue Xiuli
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