Onions are a common vegetable and condiment. The stem of the onion is the main part of people's consumption, so when planting onions, how to make the stem grow thick is a problem that many farmers are concerned about. This article will detail the methods of onion cultivation, including fertilization and watering techniques, to help you grow thick onions.
1.Varieties to choose: There are many varieties of onions on the market, and the growth habits and yields of different varieties of onions vary. When growing onions, choose the right variety according to your needs and local climatic conditions. In general, red-skinned onions and yellow-skinned onions are more common and have stronger growth adaptability.
2.Prepare the soil: Onions prefer to grow in loose, fertile, well-drained soil. Before planting, the soil should be improved. Organic fertilizers such as compost, cow manure, etc. can be applied to increase the fertility of the soil;Sand or humus can also be added to improve soil structure. In addition, it is necessary to pay attention to deep ploughing, so that the soil is sufficiently loosened, which is conducive to the growth of onions.
3.Sowing: Onions can be propagated by seed or by ramification. The sowing time is generally in the spring, when the temperature is stable above 10. Before sowing, the seeds are soaked in water for 24 hours to promote germination. When sowing, the seeds are spread evenly on the surface of the soil and then covered with a thin layer of soil. After sowing, keep the soil moist to facilitate seed germination.
4.Management: During the growth of onions, it is necessary to pay attention to proper management. First of all, weeding is carried out. In the early stage of onion growth, weeds are easy to affect their growth, so weeding should be carried out in time. Secondly, it is necessary to carry out soil cultivation. During the growth of onions, the stems will continue to elongate, and the soil should be cultivated in time to maintain the normal growth of the stems. Finally, pest control is carried out. During the growth of onions, they are susceptible to pests and diseases, and pest control should be carried out regularly to ensure the healthy growth of plants.
1.Base fertilizer: Before planting onions, apply sufficient base fertilizer. The base fertilizer can choose well-rotted organic fertilizer, such as compost, cow manure, chicken manure, etc., or compound fertilizer. The application of basal fertilizer can improve soil structure, increase soil fertility, and provide a good foundation for the growth of onions.
2.Top dressing: In the process of onion growth, top dressing should be carried out in a timely manner according to the growth condition of the plant and soil fertility. In general, the first top dressing can be carried out about 1 month after the onion is planted. At this time, a compound fertilizer with a ratio of nitrogen, phosphorus and potassium of 1:0:1 can be applied, and a second top dressing can be carried out during the flowering and fruiting period of the onion. At this time, a compound fertilizer with a ratio of 1:1:1 of nitrogen, phosphorus and potassium can be applied, and after the onion is harvested, the third top dressing can be carried out. At this time, a compound fertilizer with a ratio of nitrogen, phosphorus and potassium of 2:1:1 can be applied, and the purpose of top dressing is to supplement the nutrients required for plant growth and promote the healthy growth of plants.
3.Foliar sprays: Foliar sprays can be used to replenish nutrients to the plants during onion growth. Foliar sprays can be applied with foliar fertilizers containing elements such as nitrogen, phosphorus, potassium, etc., or with trace elements. In general, spray every 7-10 days, 2-3 times in a row. Foliar sprays have the advantage of fast absorption, good effect, and can quickly improve the nutritional status of plants.
1.Watering at the sowing stage: During the onion sowing period, keep the soil moist. If the soil is too dry, it can be watered appropriately. But be careful not to overwater so as not to affect the germination of the seeds.
2.Watering during the growing season: During the growing period of onions, watering should be carried out according to soil moisture and climatic conditions. In general, keep the soil moist, but not too moist. If the soil is too dry, it can be watered appropriately. If the soil is too wet, pay attention to drainage. In addition, it is necessary to avoid watering during high temperature periods, so as not to evaporate too quickly and affect the water absorption effect of the plant.
3.Watering during the harvest period: During the onion harvest period, the number of watering should be appropriately reduced. At this point, the onion is ripe, and too much moisture can affect its quality and storage performance. In general, it is sufficient to stop watering 1-2 weeks before harvest.
1.Follow the principle of moderation: When fertilizing and watering, be careful to follow the principle of moderation. Too much or too little fertilizer and water can affect the growth and quality of onions. According to the growth status of the plant and the soil fertility, the amount of fertilizer and watering should be adjusted in a timely manner.
2.Pay attention to pest control: During the growth of onions, they are susceptible to pests and diseases. Regular pest control should be carried out to ensure the healthy growth of plants. A combination of biological and chemical control methods can be used for control.
In conclusion, growing coarse onions requires attention to aspects such as variety selection, soil preparation, sowing and management. When fertilizing and watering, it is necessary to pay attention to the combination of basal fertilizer, top dressing and foliar spraying;Pay attention to the timing and method of fertilization and watering;Attention should be paid to following the principle of moderation and pest control. By mastering the right planting methods, you can help onions grow thick and of good quality. Hopefully, the introduction of this article will be helpful for you to grow onions.
Onion planting