Traditional seed-keeping method of radish

1. Sowing method: After the white dew (September 7th) and before the cold dew (June 5438+1October 8th), the sowing time is the same as that of local barley and rape. After the previous crop of potatoes, corn, flue-cured tobacco and other crops are harvested, timely ploughing, soil preparation and burying weed stalks. It is best to apply about 4 tons of decomposed farmyard manure or about 50 kilograms of compound fertilizer per mu when plowing. Standardize sowing. When sowing after soil preparation, soil moisture 180cm/ double row, row spacing of 40 cm, plant spacing of 25 cm, drilling ponds for sowing, and putting up to 2 seeds in each pond. It is best to cover the seeds with a handful of decomposed farmyard manure; If there is no farmyard manure, the covering thickness should not exceed 3 cm. The original seed should be per mu 150g. Seven days after sowing, pesticides should be applied once in time. 2. Planting in the field: Qujing area must sow between the white dew and the cold dew to ensure the whole seedling. In the plot where farmyard manure or compound fertilizer was not applied before Xiaoxue (165438+1end of October), combined with intertillage, 50 kilograms of compound fertilizer can be applied per mu, but it must be applied before radish seedlings grow 4-5 leaves and radish roots are not swollen. After the Spring Festival, when the weather gets warmer, water will be poured in time to turn green, and seedlings will be fixed through intertillage weeding (only one plant will be left in each pond). From the middle and late February to the middle and early March, the plants began to germinate, and urea 10 kg per mu was topdressing, followed by watering and intertillage. Spraying 1000 times of l0% imidacloprid wettable powder or 800 times of 40% omethoate can completely control aphids. 3. Pest control: The main pest of radish is aphid, and the control agents include imidacloprid, aphididine and omethoate. If cabbage caterpillar occurs, it can be controlled by spraying 800 times of insecticide. If there is much rain and high humidity in spring, downy mildew is easy to occur, and it can be prevented by spraying 500 times of chlorothalonil, Park Hyun Xuan and zineb. Key points: after the upper flowering period, when there are small seed pods, spray pesticides once to prevent pests of the whole seed pod. 4. Harvest period: at the end of April, before May 10 (before long summer), when the pods turn yellow and the seeds turn brown, they can be harvested, dried and threshed. Seed yield per mu100-150kg, up to 200kg.