Green onions are common vegetables in our daily life. Due to the high market demand, the planting area of ​​green onions is also very wide. It is planted in both the north and the south of China. Let's take a look at the annual cultivation methods of green onions.
First, the variety selection
The annual cultivation of green onions should be cold-tolerant, drought-tolerant, heat-resistant, adaptable, long-selling, and not smashed, such as Chinese green onions, Zhangqiu green onions.
Second, the mouth of the arrangement
(1) From January to March, the greenhouse will be spread and spread, and it will be harvested from March to May.
(2) In the middle and late March, the small arch shed will be spread in the flat, harvested in June, or transplanted in mid-June, and harvested in October or November.
(3) In the first half of April, the seedlings were planted in the open field, transplanted in the middle and late June, the plants were densely planted, and the open fields were overwintered. The flower buds were removed from March to April of the next year, and harvested from April to May.
(4) Seeding and seedlings from July to August, transplanting from the beginning of September to November, close planting (plant spacing 3 cm), wintering in the open field, flower buds removed from March to April of the next year, and harvested from May to July.
(5) Seeding and seedlings in the middle and late September, the winter in the open field, and the harvest in March and April of the next year.
(6) Seeding and seedlings in the middle and late September, transplanting in mid-April in the next year, harvesting in July and August, or transplanting in June of the next year, and harvesting in the market from October to November.
(7) Sowing in the greenhouse from late August to early September, kicking the shed in mid-October, and harvesting from December to February.
Third, management technology
(1) Winter and spring seedbed management. Before wintering, the green onion seedlings should have 2 to 3 leaves. According to the temperature and soil moisture, the wintering water should be poured once before freezing, and then covered with a layer of fully decomposed farmyard manure to protect the heat and ensure the safe wintering of the seedlings. In the spring, the temperature rises and the seedlings enter the rapid growth period. One must carry out 1 or 2 seedlings, so that the seedling distance is about 3 cm. Second, combined with watering, the application of quick-acting nitrogen fertilizer or NPK compound fertilizer 2 to 3 times, each time 10 to 15 kg per mu, to promote the rapid growth of seedlings, harvest small green onions listed or cultivate robust seedlings for transplanting.
(2) Summer seedbed management. When planting in summer, in the hot and rainy season, the key to management is to do three defenses: one to prevent pests and diseases. Second, the grass is harmed. Before the seeding, the grass is closed with 33% of the herbicide and 100 ml of spray per acre, and the grass is manually removed 2 to 3 times to completely eliminate the weeds. Three waterproof stains, the seedbed should be able to pour dry water, sputum can be discharged, water can not be accumulated in the seedbed.
(3) Transplanting. Before transplanting, it is necessary to apply sufficient base fertilizer, 6000 kg of high-quality farmyard manure, 30 kg of phosphate fertilizer, 50 kg of NPK compound fertilizer, and 1/3 of the total amount of base fertilizer, and 2/3 concentrated ditch. When transplanting, the seedlings should be graded, and large and small seedlings should not be mixed. If the shallots are properly planted, the row spacing is 60-70 cm, and the plant spacing is 3 to 4 cm. If the onion is listed, the row spacing is 80 cm and the plant spacing is 5 cm. After transplanting, it is necessary to cultivate the loose soil in time, flatten the ridge, and break the knot to promote the growth of the root system of the green onion. Combined with watering and topdressing with nitrogen, phosphorus and potassium compound fertilizer, 30 kg per mu. According to the growth of green onion seedlings, the soil was cultivated in time to promote the formation of green onion.
Fourth, heavy soil treatment technology Green onions should not be planted again, otherwise it will seriously affect the production, if heavy planting, the soil must be treated.
(1) Adding fully decomposed 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 vigorous growth of green onions and improve disease resistance.
(2) Sterilize the soil with Luheng No. 1.
The above is the anniversary cultivation method of green onions. I hope that all farmers can refer to it. The specific operation must be determined according to the actual situation in the local area. Do not blindly copy it.
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