Allium fistulosum originated in the semi-cold zone, which has a wide range of temperature adaptation, and likes to be cold and cold, but is not resistant to heat. In the Yangtze River basin, onions are usually sown in March to April and harvested in June to July. It can also be sown in September ~10 and harvested in April ~ May of the following year. During this period, immature seedlings were supplied to the market, and young leaves were mainly eaten.

1. Planting green onions in autumn;

Sow in early September in autumn of the first year, and overwinter with seedlings; Planting in the first half of May of the following summer, harvesting before winter, and wintering in cellar or open field;

In the spring of the third year, lots were drawn for flowering, and seeds were harvested in the second season. Seedlings at the time of planting can be listed as shallots from early May to late June; It is also possible to use flat-border cluster planting (pinch of onion) or narrow row-plant spacing to plant furrow onion as autumn onion supply before and after long summer, or as early spring croissant onion supply after wintering.

Second, spring planting of green onions;

Sow after thawing the soil in early spring, and supply it as shallots before summer, or harvest it as dried shallots or furrowed shallots in the same year after planting. It can also be used as a horny onion or as a seed plant for seed retention in winter.

Third, green onions are planted in summer;

Sowing is mostly from late July to early August, so it is also called fu cong. The plants were larger when overwintering that year. It is easy to complete the vernalization process, germinate early and bolting and flowering soon in the next spring. Generally, it will be listed after receiving the scallion.

Extended data:

Planting skills of scallion

1. Variety selection

Four-season cultivation should choose varieties that are cold-resistant, drought-resistant, heat-resistant, adaptable, long and non-tillering, such as Chinese giant onion, Zhangqiu green onion (high-footed white onion) or local peasant variety flagella onion. The onion varieties should not be cultivated in four seasons.

2. Transplanting

Plantar fertilizer should be applied before transplanting. Every 667 square meters, 6000kg of decomposed high-quality farm manure, 30kg of phosphate fertilizer and 50kg of ternary compound fertilizer should be applied, and 1/3 of the total base fertilizer should be generally withdrawn and 2/3 should be applied in furrow. When transplanting, the seedlings should be graded, and large and small seedlings should not be mixed.

Green onions can be planted in close density, with row spacing of 60 ~ 70 cm and plant spacing of 3 ~ 4 cm. When green onions are marketed, the row spacing is 80cm and the plant spacing is 5cm.

After transplanting, timely intertillage, level the ridge, break the hardening to promote the growth of root system, combine with watering and topdressing with quick-acting nitrogen, phosphorus and potassium compound fertilizer, and topdressing with 30kg on 667m2, and timely cultivate the soil according to the growth of seedlings to promote the formation of scallion.

The planting of green onions has a strong time effect, so it is necessary to choose different varieties and planting techniques in different seasons. In this regard, farmers should pay more attention to correctly master the planting time and planting techniques of green onions.

Baidu encyclopedia-scallion