1. Onion sowing and seedling management The sowing time is in the first half of September, and the seedling age is 50-60 days when transplanting. The method of sowing is mainly based on spreading, and can also be sowing. The amount of seed used is 5-6 grams per square meter, and 100-150 grams per 1/15 hectare of field is used as cold. Pour enough water before sowing, and emerge seedlings 7-8 days after sowing. Time for seedlings to emerge after emergence, with a seedling distance of 3 cm. Pay attention to controlling pests and eliminating weeds. 2. How to fertilize onion cultivation The onion has a shallow root system and is fond of fertilizer and water. It should be planted with soil with fertile soil and good water and fertilizer retention properties. Every 1/15 hectares apply high-quality decomposed organic fertilizer 4000-5000 kg (organic fertilizer is best to be sterilized), potassium sulfate compound fertilizer 75-100 kg, urea 30 kg, evenly spread on the ground, then ploughed, plough 20-25 centimeters, it is necessary to intensively plow and rake, so that the soil has no shading. After the land preparation, the ridges are raised and the border is raised, the width of the ridge is 30-40 cm, the width of the border is 180 cm, and the planting width is 210-220 cm. Every 1/15 hectares is sprinkled with 1 kg of earthworm net and squashed to suppress it. Every 1/15 hectares are sprayed with Shitianbu 100-150 ml, and finally covered with plastic film. 3. Field management of onions When the soil is frozen in the day and night, the frozen water is poured to prevent freezing damage. In late March and early April, combined with fertilization, the green water was poured, 1/15 hectares of topdressing urea 15 kg, potassium sulfate compound fertilizer 15-20 kg. When the bulb begins to swell, pour swell water, 1/15 hectares of topdressing urea 8-10 kg, potassium sulfate compound fertilizer 15 kg, can also be sprayed with micro-fertilizer. It is necessary to prevent diseases and insect pests in a timely manner. 4. Harvest in time 20 days before harvest, the application of any chemical fertilizers and pesticides is prohibited. When one-third of the leaves of the onion are yellow and the fake stems are soft, they should be harvested in a timely manner. The harvest should be sunny. It is strictly forbidden to collide at the time of collection, and dry in time, avoid direct sunlight as much as possible, and then grade the packaging. Disclaimer: Some articles of this website are transferred from the Internet. If the legal rights of third parties are involved, please inform this website for processing. phone Erythritol For Fillings,Granular Erythritol,Sprouts Erythritol,Substitute Xylitol For Erythritol Ningxia Eppen Biotec CO.,LTD , https://www.nxeppen.com