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Summer radish anti-season cultivation technology
Radish is a kind of vegetable that the masses of the people like very much. In the past, radish was only cultivated in autumn, which could not satisfy the people's annual demand for radish. In recent years, the vast number of scientific and technological workers and vegetable farmers have explored the off-season cultivation of radish and achieved success. The cultivation techniques are now introduced as follows: Co.,
First, the variety selection
The summer radish cultivated in the off-season should be selected from high-quality varieties with strong heat resistance and strong disease resistance. Such as Xia Changbai No. 2, Dongfang Huimei, Xia Meiqiang Early Health No. 3, Xia Kang 40 days and other varieties. Xia Changbai No. 2 is a good hybrid introduced from Jiangsu Zhengda Seed Company from Thailand. It has strong disease resistance and heat resistance, fast growth rate and high yield. The fleshy root is long cylindrical, 25 cm long and 6 cm in diameter. It accounts for about 1/2, the flesh is white, and the single weight is 0.5-1.0 kg. It can be listed after 45-50 days after sowing. Oriental Huimei fleshy roots are obovate, with round and small shoulders. The whole body is milky white, 30 cm long and 5.5 cm in diameter. The meat is white and can produce 3000 kg per mu. Hyein Essence No. 3 is a hybrid produced by a Japanese seedling company. It has strong heat resistance, yields more than 5,000 kilograms, and is highly resistant to Verticillium wilt. The growth period is about 50 days.
Second, soil selection and fertilization
For the land where the radish is grown, it is better to choose the sandy loam soil with rich humus, deep soil and well-drained soil. The former is made of sputum with more fertilization, less fertilizer, and a lot of fertilizer left in the soil, such as early kidney bean cucumber. Deep ploughing and ploughing, multi-plowing and ploughing, drying in the sun, combining deep ploughing before sowing, applying 2000 kg of fully decomposed organic fertilizer per acre, 100 kg of ash, 25-30 kg of molybdenum permeate, ploughing into the soil, human excrement 2000 kilograms, after ploughing into the soil after drying, or 2000 kg of fertilized machine fertilizer, 40 kg of compound fertilizer, once applied base fertilizer, and then look at seedlings.
Third, timely planting
The suitable sowing date of summer radish is from late June to early August, sowing early, when the radish is swollen, there is more rain and the disease is heavy. Ridge cultivation, ridge distance 80 cm, height 15-20 cm, double rows per ridge, plant behavior 20 cm x 25 cm, more than 6000 plants per mu. Generally 2 capsules per hole, 5~7 leaves, timely seedlings, seeding must use the soil (such as trichlorfon, phoxim, etc.) seed dressing or pesticide dressing to prevent underground pests, while applying 40 per acre 1.5 kg of pentachloronitrobenzene to prevent fungal diseases. After the sowing, in addition to the cover soil, it should also be covered to maintain moisture, ensure that the emergence of seedlings is quick and tidy, and also prevent the rainstorm from binding the soil, hindering the emergence of seedlings, covering the shell with husk, gray fertilizer, etc., and the cover soil is about 2 cm thick after sowing. Should not exceed 3 cm, and covered with a sunshade net to keep the field wet without stains.
Fourth, the field management
After the sowing, the seeds were re-seeded in time, and black rot and soft rot were found in the middle and late stages. The initial use of 10 million units of agricultural streptomycin spray, or DTM fungicide 400-500 times spray. In addition, attention should also be paid to the prevention of aphids, the discovery of mosaic virus disease, and the prevention and treatment of the virus K plant disease.
The summer is hot, the sunshine is strong, and the field is generally dry. Special attention should be paid to proper watering. In the germination period, watering should be fully watered when planting, the soil water content should be above 80%, to ensure that the emergence of seedlings is fast and tidy; in the seedling stage, the soil water content is preferably 60%, and the principle of less pouring and pouring should be mastered; Period (from white to off-the-shoulder), moderate irrigation, but not too much water, root growth period, special attention should be paid to adequate and uniform water supply, soil moisture 70-80%, air humidity 80-90%, if water supply Uneven, it is easy to cause cracking. Watering the summer radish should avoid watering at noon, preferably watering in the evening.
In principle, the topdressing period should be applied before the radish expansion period. The fertilizer should be applied to the manure. The concentration should be too large or too close to the root to avoid burning roots. If the concentration of human feces is too large, the roots will harden and should be poured. When the water is washed with water, the human excrement and ammonium sulfate are applied too late, or the unfermented and decomposed human excrement is applied, the meat roots are blackened, the quality is deteriorated, or the rupture, or bitter taste.
V. Harvesting
The growth period is about 45 days, and it can be listed in batches.
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