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In order to protect the high quality and high yield of radish, according to the technical requirements of pollution-free vegetable production, the following fertilization techniques are proposed for the growth characteristics of radish and its fertilizer requirements:
1, the principle of fertilization: based on organic fertilizer, apply radish special fertilizer; based on the base fertilizer, skillfully applied top dressing.
2. Applying the base fertilizer is the main link of high quality and high yield of radish. The base fertilizer should be applied on the basis of 2500-3000kg of decomposed organic fertilizer per mu, and 40-55kg of special fertilizer for radish. It is required to spread the whole layer, and after the application, it will be turned into the soil and smashed into the ground. This will make the seedlings grow strong and the fleshy roots develop well. When applying the base fertilizer, it is not possible to use the unfertilized organic fertilizer to avoid damage to the root system of the seedling and affect the yield.
3, in the application of topdressing, should master the principle of light before weight. The first top dressing is to apply thin human excrement between the lines when the seedlings grow two true leaves. The second top dressing in the second time after the seedlings, when the radish roots "break the belly", apply 15-20kg of radish special fertilizer per acre. For small and medium-sized radishes with an annual growth period and short growth period, after 2 times of topdressing, the radish roots of the radish will rapidly expand and can no longer be topdressed. For large autumn and winter radishes, the growth period is long. When the radish is exposed or the shoulders are exposed, it is also necessary to apply a fertilizer, 10 kg of radish special fertilizer, which will have a significant increase in production.
High quality and high yield fertilization technology for radish
Radish is a one-and two-year-old herb of the genus Brassica, one of the main vegetables of root vegetables. Radish has a large absorption of nitrogen, phosphorus and potassium. It is a high-yield crop with high fertilizer content. For every 4000kg of radish, about 8.5kg of nitrogen, 3.3kg of phosphorus pentoxide and 11.3 of potassium oxide should be absorbed from the soil. Kg, 3.84 kg of calcium oxide, the ratio is roughly 2.5:1:3.4:1.2.
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