2. Soil preparation and sowing: Plots should be ploughed as soon as possible, thoroughly ploughed and sunned, and sufficient base fertilizer should be applied. Generally, about 3000 kg of decomposed organic fertilizer, plant ash 100 kg and 25 kg of calcium superphosphate are applied per mu. Border planting, the border height is 25cm, the border width is 1 10 ~ 150cm. Generally, hole sowing is adopted, the hole spacing is 20-25cm, the hole depth is 1.5-2cm, 3-4 seeds are sown in each hole, and the seed consumption per mu is about 400 grams. When sowing, first water with decomposed manure, then sow, compact, water and moisturize, spray butachlor to prevent weeds, and finally cover with a layer of straw to keep water and prevent soil from hardening.
3. Tian Tuan management
(1) Sparse seedlings. When the seedlings have real leaves, the first thinning is carried out; When 2-3 real leaves grow, the second thinning is carried out; The seedlings are fixed when they grow to 3-4 true leaves.
(2) Water management. The radish in the heart has poor drought tolerance, so the soil should be kept moist during the growth process. Water supply should be sufficient during germination; Water should be used less at seedling stage to promote the downward growth of fleshy roots; Water the fleshy roots properly at the early stage of growth, with the focus on preventing the leaves from growing white; In the later stage, it should be enough water and fat.
(3) topdressing. The base fertilizer for planting radish should be sufficient; Fertilization should be less at seedling stage, and topdressing should generally start after seedlings are fixed. It can be combined with weeding and soil cultivation, and mixed with human manure or 10 ~ 15 kg urea and water. During the period from "broken belly" to "exposed shoulder", heavy fertilizer is applied twice, and 30 kilograms of compound fertilizer is applied per mu.
(4) pest control. The main pests of radish are aphids, Plutella xylostella, Plutella xylostella, Pieris rapae, borer, yellow striped flea beetle and so on. To control aphids and cabbage caterpillar, iron sand palm and special moth killer can be used. Avermectin, Li Qiang 3 1 1, chlordecone, etc. Can be used for controlling Plutella xylostella, Pieris rapae and borer. Insecticide and Mi Le can be used to control the yellow striped flea beetle. The main diseases are black rot and downy mildew. The main agricultural control methods are crop rotation and enhanced light. Chemical control can be carried out with sulfur mixture, Bordeaux mixture, toxic mold, etc.
(5) harvesting. Harvest begins 75 ~ 90 days after sowing. The weight of single fruit can reach 1 kg, and the yield per mu is more than 2500 kg. The market price is about 4 yuan per kilogram, and the output value per mu can reach 1 10,000 yuan.