I. Variety selection

The summer radish planted in the off-season should be selected from high quality varieties with strong heat resistance and strong disease resistance. Such as Xia Lu, short-leaf 13, Xia Changbai II and other varieties.

Second, soil selection and fertilization

Should choose soil rich in humus, deep soil, well-drained sandy loam soil. Per acre, 2,000 kg of fully-fertilized organic fertilizer, 100 kg of plant ash, 25-30 kg of molybdenum peroxide, 2,000 tons of human waste, 2,000 tons of human excrement, 2,000 tons of manure after drying, or 2000 kg of organic manure Yuan compound fertilizer more than 40 kilograms, a full application of basal fertilizer, after seeing seedlings fertilizer.

Third, timely sowing

When cultivating radish over the summer, the seeds can be sowed in batches from May to August according to the market demand in the off-season off-season. Starting from the cultivation, the lotus root is 80 centimeters wide and 15-20 centimeters high. Each row is double-rowed. The plant behavior is 20 centimeters and 20-25 centimeters, with more than 6000 plants per mu. Generally, 2 seeds per hole, 4-5 leaves in a timely manner as a seedling, must be used when sowing herbs (such as trichlorfon, phoxim, etc.) seed dressing or seed dressing to prevent underground pests, while each acre The application of 40% pentachloronitrobenzene 1.5 kg to prevent fungal diseases. After sowing, in addition to cover soil, it should also be covered to maintain the moisture, to ensure that the emergence of seedlings quickly and tidy, but also to prevent heavy rain consolidation soil, impede the emergence of seedlings, covers available husk, ash and so on. After sowing, the soil thickness should be about 2 cm, which should not exceed 3 cm. At the same time, it should be covered with a shade net to keep the field wet and not stained.

Fourth, field management

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 the plants grow 12-13 leaves, the fleshy roots enter a period of rapid growth. At this time, the supply of fertilizer and water should be sufficient, and the water can be flexibly changed according to weather and soil conditions.

Radishes also have special requirements for nutrients. The lack of boron will make the root of the meat darker and crooked. It should be 5 kg of borax. During the top-dressing period, in principle, the application of radish before the expansion period is emphasized. Topdressing nitrogen fertilizers can be used for human feces and chemical fertilizers. Avoid concentration too large or too close to the roots to avoid burning roots; excessive human urine concentration will make the roots harden, generally should be When watered, it will be diluted to 30%. When human urine and ammonium sulfate are applied too late, or if human feces and urine are not fermented, the meat will be rooted in black hoops, and the quality will be deteriorated or broken, or bitterness. During the root enlargement period, potassium fertilizer should be applied appropriately, and 15 kg of potassium sulfate should be applied. 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.

Black rot and soft rot were found in the middle and later stages. In the initial stage, 10 million units of agricultural streptomycin were sprayed, or 77% could be sprayed with 400-500 times of WP. In addition, it should also be noted that the locusts, aphids, and cabbage caterpillars can be sprayed with 2.5% Leisei EC or 2.5% dichlorvos 1500-2000 times. Mosaic virus disease was found and it was controlled with virus A, etc.

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