The traditional cultivation methods of green onions are mostly summer harvesting and winter storage. In order to achieve a balanced supply of green onions, the scientific and technological personnel improve the cultivation management techniques and apply some simple facilities (small arch shed, greenhouse, simple solar greenhouse) by cultivating adaptable varieties. So that the green onions can be cultivated all year round and get better benefits. Therefore, the cultivation method and management points of the green onion are sorted out by the seed net, and the following details are listed for the reference of netizens. How to manage green onions? First, the choice of green onion varieties: For the four seasons, you should choose cold-tolerant, drought-tolerant, heat-resistant, adaptable, long-selling, non-salting varieties, such as Chinese green onions, Zhangqiu green onions (high-footed white) or local farmer varieties. The onion varieties should not be cultivated in the four seasons. How to manage green onions? Second, the cultivation method of green onions: From November to March, it is planted in a simple solar greenhouse, spread flat and spread, and small green onions are listed from March to May. In the middle and late 23rd of the month, the small arch shed was planted, flattened and spread, and the small green onion was listed in June. It can also be transplanted in mid-June and harvested in October or November. In the first half of October, seedlings were planted in the open field. In mid-June, the plants were transplanted in the middle and late June, and the open fields were overwintered. The flower buds were removed from March to April of the next year, and the shallots were listed from April to May. Seeding and seedling cultivation from July to August, transplanting in the first ten months of November to November, close planting (plant spacing 3cm), wintering in the open field, flower buds removed from March to April of the next year, and green onion from May to July. Seeding and seedlings were planted in the middle and late of May, and the seedbeds were exposed to winter. The small green onions were listed in March-April. Seeding and seedlings were planted in the middle and late of April, transplanted in mid-April in the next year, and the green onions were harvested from July to August, or transplanted in June, and harvested and stored in winter from October to November. Sowing in the solar greenhouse from late August to early September, shed the shed in mid-October, and listing the small green onions from December to February. How to manage green onions? Third, the management of green onions: 1, winter and spring seedbed management Before wintering, the seedlings should have 2 to 3 leaves. According to the temperature and soil moisture, the wintering water should be poured before the freezing, and then covered with a layer of decomposed farmyard manure to ensure the safe wintering of the seedlings. In spring, the temperature rises, and the seedlings enter a period of rapid growth. The first is to carry out 1 to 2 seedlings, and the seedling distance is about 3 cm. The second is to combine the watering 2~3 times to apply the quick-acting nitrogen fertilizer or the ternary compound fertilizer, each time 10~15kg/667 square meters, to promote the rapid growth of the seedlings, or to list the small green onions or cultivate the robust seedlings for transplanting. 2, summer seedbed management Summer seedlings are in a hot and rainy season. The key to management is to do three preventions, one to prevent pests and diseases, and two to prevent grass from eating, to prevent grass from eating. Before sowing, before the emergence of seedlings, each 667 square meters of 33% herbicide with 100ml spray closed the soil, and combined with artificial weeding 2 to 3 times, completely eliminate weeds. Three waterproof stains, the seedbed should be able to pour water, sputum can be discharged, and must not be water in the seedbed. 3, green onion transplant management Before transplanting, it is necessary to apply sufficient base fertilizer, 6000kg of high-quality farmyard manure, 30kg of phosphate fertilizer and 50kg of ternary compound fertilizer per 667 square meters of rotted mature soil, 1/3 of the total amount of base fertilizer is generally applied, and 2/3 concentrated ditch. When transplanting, the seedlings should be graded, and large and small seedlings should not be mixed. The green onion market can be properly planted, the row spacing is 60-70cm, the plant spacing is 3~4cm, and the onion is listed. The row spacing is 80cm and the plant spacing is 5cm. After transplanting, it is necessary to cultivate loose soil in time, flat ridge, break the knot to promote root growth, combine with watering and apply quick-acting NPK compound fertilizer, apply 667 square meters of 30 kg, and timely cultivate soil according to the growth of seedlings to promote the formation of onion white. How to manage green onions? Fourth, the disease control of green onions: 1. Underground pests of green onions: There are mainly sorghum, sorghum, and onion stalks. Before the soil is tilled, the bottom fertilizer is combined. 667 square meters is used with 3% phoxim granules, 3kg, and concentrated in the planting ditch when transplanting. The onset of onion is generally in the middle of April to early June and early September to early November. The larval stage can be rooted with 50% phoxim emulsifiable concentrate 1000 times solution, and the effect is very good. How to manage green onions? 2. Ground pests of green onions: There are mainly cabbage caterpillars, onion horses, leaf miners, and red spiders. For the control of Pieris rapae, 20% to 40ml of 10% cypermethrin EC, 2.5% of the enemy's emulsifiable concentrate is 15~25ml, and 20% of the emulsified milk is 10~30ml. The control of onion thrips and leaf miners can be sprayed with 50% dimethoate 1000 times solution or phoxim 1000 times solution, killed 毙 4000 times solution, and fast killed 1500 times solution. The control red spider is sprayed with a 1000-fold liquid. The drug was stopped 10 days before the harvest. How to manage green onions? 3, the disease of green onions: The diseases of the onion mainly include rust, purple spot, downy mildew, gray mold, black spot, etc. The main control measures are the application of farmyard manure and phosphorus and potassium fertilizer to ensure the robust growth of the plant. Diligently cultivate the loose soil, dilute the damp and dehumidify, drain in time after the rain, and adjust the microclimate in the field. Small water is poured into the water to prevent flooding. Control method: 25% powder rusting 2000 times liquid for rust; 50% carbendazim 500 times solution for purple spot disease; 25% metalaxyl 800 times liquid or chlorothalonil 500 times liquid for downy mildew; 20% for gray mold Dakling 1000 times solution or 50% pupae 800 times solution; black spot disease with 50% carbendazim 800 times solution or 70% methyl thiophanate 1000 times solution. Spray every 5 to 7 days for 2 to 3 times. 5. Soil treatment methods for heavy land: It is not advisable to plant green onions, otherwise it will seriously affect the yield. If heavy planting is carried out, the soil must be treated. 1 Add fertilized farmyard manure and phosphorus and potassium fertilizer to supplement the trace elements needed for the growth of green onions, such as sulfur, zinc, calcium, magnesium and iron, to promote the robust growth of green onions and improve disease resistance. 2 The soil is sterilized by a bactericide, and the phoxim pesticide is used to kill underground pests before transplanting. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone
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