Luozisu has the name of small ginseng, which is one of the main varieties in winter and spring. According to the production experience of Jidong, the following measures are beneficial to the improvement of production.

First, a reasonable election. Radish belongs to the cruciferous crop. When it is used in continuous cropping with cruciferous crops, the pests and diseases are serious. In the production, the cruciferous crops should be avoided as much as possible. In the east, the crops are mainly planted in the form of wheat stubble, and the wheat cultivars are compounded with radish. The occurrence of pests and diseases is light and the yield is improved.

Second, reasonable selection of species. There are many varieties of radish, and the adaptability and high yield of each variety are very different. When cultivating autumn radish, attention should be paid to selecting varieties with high heat resistance and disease resistance. Due to the high production capacity of hybrids, it is best to use hybrids to increase yield. . The main varieties planted in Jidong are Guoguang No.1, Qincai No.1, Qincai No.2, Fengguang Generation, Fengqiao Generation and so on.

Third, reasonable land preparation. After the wheat is harvested, it should be ploughed in time, exposed to the soil to be matured, and should be timely smashed after the rain to keep the soil flat and finely crushed, without smashing, so as to facilitate emergence and seedling after sowing. Generally, the loose soil conditions are favorable for the growth of fleshy roots, and the ridges are favorable for promoting the expansion of the roots. Generally, the ridges are 10-20 cm high and the back width is about 20 cm to facilitate sowing.

Fourth, reasonable fertilization. The yield of autumn radish is high, the soil consumption is large, and sufficient fertilization should be applied in production to ensure the growth of radish. Fertilization should pay attention to the base fertilizer, supplemented by topdressing. The fertilizer type is mainly organic fertilizer, supplemented by chemical fertilizer. The organic fertilizer should be fully decomposed to prevent the fever from decomposing the manure and damage the main root of the seedling, causing the fleshy root to split. , decay, affecting production and quality. Generally, about 4,000 kg of organic fertilizer is applied to the mu, and about 20 kg of superphosphate is applied, and about 500 kg of ash is used.

5. Sowing at the right time. Radish has strict requirements on sowing date, early sowing, early heat, more pests and diseases, unfavorable radish growth, and radish is easy to worry at high temperature, late sowing, insufficient growth of radish, difficult to increase yield, suitable sowing is the key to high yield of radish One of the measures. In the eastern part of the country, it is generally suitable for sowing in the late July to early August. Generally, it can be broadcasted according to the standard of the plant spacing of 55-6023 cm, and about 500 grams per mu.

6. Miao Ding Miao during the appropriate period. Radish grows quickly after emergence, and it takes time to prevent seedlings from appearing due to the high density. Generally, when the cotyledons are fully expanded, the seedlings are suitable. The seedlings are kept at 2-3 per hole. The second time when there are 2 to 3 true leaves, the seedlings are removed and the cotyledons are stretched, and the leaves are bright green. The roots and necks are moderately long, and the thicker seedlings are fixed in 5 true leaves, leaving 1 seed per hole.

Seven, watering at the right time. Autumn radish has strict requirements on water, is not drought-tolerant, lacks water in soil, has poor growth during seedling stage, and has weak root growth in the later stage. The meat is hard and spicy, and it is hollow; too much water will cause the leaves to grow and the fleshy roots to develop. Therefore, watering should be flexibly controlled according to soil moisture and precipitation. Before sowing, water should be poured once to facilitate the emergence of seedlings and seedlings. In the case of good bottoming, germination, seedling period may not be watered. In the period of leaf growth, the plant needs a large amount of water, and water should be properly watered. Watering, in order to prevent the length of the fleshy roots, the soil should be kept moist, the soil water content is between 70-80%, the water supply should be balanced, and the water supply should be prevented from rising and falling, causing cracks. 5-7 days before harvesting Control water to improve the quality and storability of fleshy roots.

Eight, timely topdressing. Appropriate amount of topdressing at the right time is beneficial to increase yield. Generally, before the growth of fleshy roots, the supply of nutrients should be controlled. In particular, nitrogen fertilizer should not be applied to prevent the growth of nitrogen fertilizer. In the fleshy root growth period, nitrogen fertilizer should be properly applied. About 10 kg of urea per mu should be applied. In the period of the growth of fleshy roots, urea and potassium sulfate are applied once again to facilitate the expansion of fleshy roots, about 7.5 kg of urea per mu and 10-15 kg of potassium sulfate.

9. Promptly control pests and diseases. The main pests and diseases that harm autumn radish are: viral disease, downy mildew, soft rot, black rot, white rust, rapeseed, cabbage caterpillar, rapeseed, yellow stripe, small tiger, etc. Measures to improve the control effect. The main measures adopted are: avoiding continuous cropping with cruciferous crops; timely planting; strengthening seedling management, preventing soil drought, timely watering in drought; applying organic fertilizer should be fully decomposed; timely draining during rainy season to prevent water accumulation in the field ; timely removal of field disease plants; appropriate symptomatic medication: downy mildew can spray 65% ​​daisen zinc 500-800 times liquid or 50% carbendazim 500-600 times liquid; soft rot spray 50% dexamethasone 600 ― 800 times liquid; black rot spray 65% ​​daisen zinc 500 times liquid, and strengthen the control of mites and yellow strips; white rust spray 65% ​​daisen zinc 500-600 times liquid or 50% carbendazim 600 times liquid When the disease is prevented, spray the medicine once every 7 days, and spray a total of 2-3 times. In the early stage of the occurrence, the aphids were sprayed with 10% imipenem 3000 times liquid; the rapeseed meal, the yellow stripe, and the cabbage caterpillar were treated with 2.5% enemy killing 4000 times liquid; when the small ground tiger occurred, the flooding method could be used to flood Killing roots, the adult stage can be sprayed with 25% cypermethrin 4000 times liquid.

Ten, the right harvest. Autumn radish should be harvested before frost reduction to prevent the fleshy roots from being frozen. It is generally suitable for harvesting from late October to early November.

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