First, choose a good species
The selection of fine varieties is the prerequisite for quality and high yield of radish in summer. Therefore, when cultivating radish in midsummer and early autumn high temperature season, early maturing varieties with good heat resistance and strong resistance must be selected.
Second, apply base fertilizer
Premature radish has a short growing period and requires high nutrient content, and the base fertilizer is applied in combination with site preparation. The basal fertilizer should account for 70% of the total amount of fertilizer, and 4,000 kg of farmyard manure and 30-40 kg of compound fertilizer can be applied per mu. The radish is cultivated in deep sorghum sorghum, and the sorghum is 25 to 30 cm high.
Third, planting seedlings
When radishes are cultivated in the early summer and early summer, they can be sown in batches from May to August according to the market demand in summer and autumn. Sowing methods are sown and sowed, which can be selected according to the type of species. Large fruit varieties should be on-demand, spacing is 20 cm, spacing is 35 cm, sowing points should be shallow, covered with fine soil after sowing; small fruit varieties can be broadcast, after the seedlings to maintain 6 ~ 12 cm spacing. After sowing can be used to cover the surface of straw, sun protection and sun protection, anti-rain erosion, reduce fertilizer and water loss. Shade nets can also be used to cover the surface of the crop, which will facilitate the emergence of complete seedlings. The seedlings shall be removed in time after the seedlings are raised to avoid pressing the seedlings or causing the seedlings to grow thin. Note that the seedling period must be early seedlings and late seedlings. The seedlings grew rapidly after unearthing. When the seedlings grew 1 to 2 leaves and 3 to 4 leaves, the seedlings were once seedlings and the seedlings grew to 5 to 6 leaf stage seedlings.
Fourth, fertilizer and water management
The radish needs more water, and the relationship between the amount of water and the yield, quality and quality is very big. Excessive water, rough radish skin, but also easily lead to rooting and rot; seedling lack of water, prone to viral disease. When the fertilizer and water are not enough, the radish has a small, rooty, lignified, bitter and spicy taste, and it is easy to eat. Cultivation should be based on the characteristics of the radish during the growth period and the need for a balanced water supply, do not suddenly dry. After pouring seeds, water is poured. Most of the seeds will be poured with water once they are seedlings to facilitate full seedlings. After planting, the seedlings soon enter the period of leaf growth and must be properly watered. In the later period of vegetative growth, appropriate water control is needed to prevent the leaves from being long and affect the growth of fleshy roots. When plants grow 12 to 13 leaves, the fleshy roots enter a period of rapid growth. At this time, the supply of fertilizer and water should be sufficient, and watering can be flexibly based on weather and soil conditions. After heavy rain, it must be drained in time to prevent excess water from picking up roots and producing roots or rot. In the hot and dry season, it is necessary to insist on watering in the evening and avoid watering at noon to prevent the young leaves from wilting and fleshy root rot, and stop watering for 7 days before harvest. Radishes also have special requirements for nutrients. Boron deficiency will make the root of the meat darker and cramped. During the root enlargement period, appropriate potassium fertilizer should be applied. After emergence, the seedlings should be given as appropriate before setting seedlings. When the seedlings grow out of 2 true leaves, topdressing with a small amount of fertilizer is carried out. After the second time, the middle seedlings are combined with cultivating and weeding topdressing once. The second round of topdressing was conducted during the radish "break white" to "strapless" period, and the seedlings were then top-dressed. It should be noted that topdressing should not be close to fleshy roots to avoid burning roots. The cultivating and weeding can be combined with irrigation and fertilization. The cultivator should be deep and shallow firstly, first near and far, and stop cultivating after the line is closed.
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