How to grow autumn radish

Now it's time to plant autumn radish again. Plant autumn radish in time to ensure high quality and high yield. The following tasks should be done well. 1. Soil preparation and fertilization. Radish field should choose sandy loam soil with deep soil layer, fertile texture and loose ventilation, but do not choose cruciferous vegetable stubble. Radish based on basic fertilizer, supplemented by topdressing, combined with soil preparation, 3000 kg of rotten high-quality farm manure per mu, and appropriate application 2, sowing at the right time. Autumn radish should be sowed from the end of July to the middle of August. High ridges should be made before sowing. The ridges are 30 cm wide, 15 cm high and 20 cm wide. As the survival rate of transplanting is very poor, the direct seeding method is generally used, the row spacing is 50 cm, the plant spacing is 25 cm, the sowing depth is 1.5 cm, and there are 3-5 seeds per hole. When 2 true leaves appeared in the seedlings, the seedlings were interspersed, the weak seedlings were removed and the seedlings remained strong, and there were 2-3 seedlings in each hole. 3. Field management. The early growth period of autumn radish is in the high temperature and rainy season, so weeding and ploughing should be carried out in time, and the principle of shallow first and then deep and then shallow should be grasped. After the seedling is fixed, the first intertillage should be shallow, and the land can be cut. After that, the intertillage can be properly deepened, but the roots should not be hurt. Prevent rotting roots or cracks, and so on. Combined with irrigation, 15 kg of ammonium sulfate per mu was applied to 10 cm near the seedling, and then human feces and urine were irrigated twice at an interval of 15 days, with 1000 kg / mu each time. The "broken belly" appears when the seedlings have 4 or 5 true leaves, so they should be watered less before breaking the belly to promote the straight root. In general, the top of the fleshy root is exposed to the ground, and attention should be paid to fertilization and irrigation after the thickness is nearly 2 cm. At this time, the lack of water will appear hollow, hard meat, spicy taste, reducing production. 4. prevention and control of diseases and insect pests. For root maggots, 90% crystal trichlorfon 500 times solution can be used to kill maggots; cabbage borer and cabbage borer and cabbage borer can be controlled with 50% phoxim EC or 20% triazophos EC 1000 times; vegetable aphids can be controlled with 2000 times solution of aphid pine wettable powder; 65% mancozeb wettable powder 500 times 600 times solution can be used to control diseases such as downy mildew. 5. The suitable harvest time of radish is generally after the fleshy root is fully enlarged, and the autumn radish that is ready for storage should be harvested in time before freezing.