Fertilization Techniques For Radish

By Author: doris zhang
Total Articles: 91
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Radish, cruciferous family, radish genus biennial or annual herbs, taproot fleshy, oblong, spherical or conical, outer skin green, white or red; stem branched, glabrous, slightly powdery. Seeds, fresh roots, withered roots and leaves are all used in medicine: seeds to eliminate food and phlegm; fresh roots to quench thirst and help digestion, withered roots to facilitate diarrhea; leaves to treat primary dysentery and prevent dysentery; seeds to extract oil for industrial use and consumption. So, what are the technical points of radish fertilization? The following is introduced by the editor.

Fertilization of radish technical points

1.Growing conditions

Radish is a semi-hardy vegetable, the growth temperature is 5 - 25 ℃, fleshy root expansion suitable temperature for 20 ℃, most varieties are suitable for summer sowing, autumn growth, late autumn harvest. They are suitable for organic matter-rich,vertical grow table well-drained, deep sandy loam soil. If the soil is sticky, you should use the straight root into the soil shallow ...
... open body varieties. Shallow soil or soil that is too sticky and heavy, or soil with more gravel and brick debris, can easily make the fleshy roots of radish deformed, bent or branched, thus reducing its yield and quality.

Radish has a wide range of adaptability to soil pH. pH 5.3--7 is suitable for large and medium-sized radish in autumn and winter, and the radish can grow normally in the range of pH 5--8 in all seasons.

2.Fertilizer demand characteristics

From the viewpoint of radish's absorption of the three elements, in the seedling stage, the plant is small and the absorption is also small, absorbing more nitrogen, potassium second and phosphorus less. When entering the rosette stage, the amount of absorption increases obviously, the amount of nitrogen and phosphorus absorbed by the root system increases three times compared with the previous period, and the potassium absorbed increases six times compared with the previous period. Absorption of fertilizer potassium was more.

In the middle and late stages of radish growth, the growth of fleshy roots is 80% of the total weight of fleshy roots, and the uptake of nitrogen, phosphorus and potassium is also more than 80% of the total uptake. At this time, the rate of nitrogen uptake was slightly slower, and the nitrogen content in the leaves was always higher than that in the roots. Potassium uptake continued to increase significantly, mainly in the roots,mobile vertical grow tables until the time of harvest. Three quarters of the inorganic nutrients absorbed during this period were used for the growth of fleshy roots.

3.Fertilization techniques

Base fertilizer

The application of sufficient base fertilizer is the main measure for the good yield of radish. The type and amount of basic fertilizer often vary according to the soil and variety. In the Yangtze River basin, human manure and urine are mostly used as base fertilizer. However, it is easy to make the radish grow and the fleshy root taste light, so in addition to human manure and urine, it should also be applied with well-rotted stable manure, compost and phosphorus and potassium fertilizer.

Before sowing radish, apply phosphorus fertilizer in holes, 10kg of calcium superphosphate per 667 square meters, which can significantly increase the yield. The base fertilizer can be scattered with 2500-3000kg of well-rotted stable fertilizer, 50kg of grass ash, 25-30kg of calcium superphosphate per 667 square meters, plowed into the soil, and then apply 2500-3000kg of human manure and urine. After that, apply 2,500 - 3,000 kg of humanure and urine, dry it and plow it into the soil, rake it and make a bed. This will make the seedlings grow strong and the fleshy roots develop well.

Do not use unrotted manure when applying base fertilizer to avoid damaging the main roots of seedlings. In many areas in the north, when applying soil fertilizer, add a certain amount of cake fertilizer, which can make the fleshy root tissue full and not easy to hollow during storage.

Fertilizer chasing

According to the law of radish's need for nutrients during the growth period, the principle of light, heavy and light is mastered in the amount of chasing fertilizer. The second fertilizer is applied in the rows when the seedlings grow 2 real leaves, and a thin amount of human manure and urine is applied between the rows. The second chase fertilizer in the second inter-row and potassium sulfate 5kg each. for small and medium-sized radish after 3 chases of fertilizer, radish fleshy roots rapidly expanded, can no longer chase fertilizer. For large radish in autumn and winter, 15--20kg per 667 square meters when the radish shows its shoulder, and then apply potassium fertilizer such as grass ash once per 667 square meters, 100--150kg per 667 square meters when the radish grows to its peak. --After the shoulders are exposed, spray 2%-3% calcium superphosphate once a week, which has a significant effect of increasing yield.

4.Fertilization standard

For every 1000kg of radish, 2.1-3.1kg of nitrogen, 0.8-1.9kg of phosphorus pentoxide and 3.8-5.6kg of potassium oxide are required. The ratio is 1:0.2:1.8.