What are the technical requirements for high-yield fertilization for potato cultivation? The growth period of potato is short, but the amount of fertilizer is large. Among the three factors of fertilizer, potassium is the highest, followed by nitrogen, phosphorus is the least, and the ratio of nitrogen, phosphorus and potassium is 2.2:1:4.6. In order to ensure the high quality and high yield of potato, according to the technical requirements of pollution-free vegetable production, the following fertilization techniques are proposed for the growth characteristics of potatoes and their fertilizer requirements:
1. Fertilization principle: based on organic fertilizer, apply special potato fertilizer, mainly based on base fertilizer, and apply fertilizer early.
2. Apply enough base fertilizer. The base fertilizer should be based on organic fertilizer, and the special fertilizer for potato should be applied. That is, on the basis of applying 2500-3000kg of high-quality rotted organic fertilizer per acre, 45-50kg of special fertilizer for potato should be applied.
3. Apply seed fertilizer as appropriate. When the base fertilizer is insufficient or the cultivated land is too late to fertilize, it is often used as a seed fertilizer for planting a special fertilizer of 15-20 kg per mu. The application of seed fertilizer is mainly carried out by means of ditch application or acupoint application. Pay attention to the fact that the fertilizer should not be in direct contact with the seed potato to avoid discriminating the seed potato.
4, look at Miao Qiao Shi top dressing. Topdressing should be done early, usually in 2 times. The first time in Qimiao, combined with cultivating soil, using 500-700kg of decomposed manure and water, the second time in the bud stage, when the potato tubers begin to expand. The amount of fertilizer needed is increased, which is the period of most fertilizer, and 5-15 kg of special fertilizer for potato can be applied. Generally, after the ridge is closed, it can no longer be topdressed.
This article URL: What are the essentials of high-yield fertilization technology for potato planting?
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