Let Street Light,Spot Lights Outdoor,Outdoor Garden Lighting,Waterproof Led Light JIANGMEN MICHEN LIGHTING CO.,LTD , https://www.jmledbulb.com
In the middle and late stages of fruit growth, do not apply excessive nitrogen fertilizer. If the application of ammonium nitrogen fertilizer is too much, it will affect the operation of calcium in the tree. In order to promote fruit coloring, it is not advisable to apply potassium fertilizer too much. Otherwise, calcium deficiency physiological diseases may also be caused.
Nitrogen has the name of “leaf fertilizer†and “branched fertilizerâ€. Each fertilizer has no more than 15 kg of fertilizer per acre, and the amount of urea per acre is 30-50 kg per year. According to relevant reports, when the apples per mu are more than 2,500 kg, it is better to apply 0.4 to 0.5 kg of pure nitrogen per 50 kg of apples. When the nitrogen fertilizer is applied too much, the fruit quality will be lowered. Fruit farmers call phosphate fertilizer "flower fertilizer." Phosphorus can increase sugar and reduce acidity. In the case of low phosphorus, each year of the orchard should be supplemented with more than 50 kg of phosphate fertilizer. Because potassium fertilizer can significantly improve and improve fruit quality, it is called "fruit fertilizer". Potassium balanced fertilization depends on the level of potassium in the soil. In the soil with low potassium content, the yield per acre is 2500 kg, and the application of potassium fertilizer per mu is 80-120 kg per year: in the soil rich in potassium, the application of potassium fertilizer per acre is 36-45 kg per year, and the application of saplings per acre is 5 ~10 kg.
Apple tree topdressing should be suitable
Quality and high yield are two aspects of high efficiency. If the annual application of organic fertilizer or organic fertilizer is too small, it is necessary to carry out topdressing in order to make up for the shortage of nutrient supply. Generally, the fruit tree special fertilizer is applied before the germination and differentiation, and the fruit is inflated, and the fertilizer is mainly based on phosphorus and potassium fertilizer in the late stage of fruit expansion, so as to facilitate fruit enlargement and coloration.
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】