Generally speaking, spring is mainly planted in March-April and harvested in June-July. It can also be planted in September-65438+1October in autumn and harvested in April-May in the following year, but it is mainly planted in spring.

Second, the planting method

1, growth temperature of shallots

The temperature of shallots should be determined according to their growth habits as much as possible. Because shallots prefer to be cool, the suitable temperature is basically around 12 to 22 degrees, and it should not be too high, because too high temperature will lead to slow growth of shallots, so many farmers say that their own shallots are not long or grow slowly, and a few factors are caused by temperature.

2. Water skills of shallots

The planting of shallots can be properly watered, and the amount of watering should not be too large or there is water accumulation, because too much water will lead to the root rot of shallots, so it can be properly watered according to the characteristics of drought and waterlogging tolerance of shallots, and the soil can be dry. It is not recommended to water shallots in large quantities.

3. Soil selection of onion

Planting shallots, it is best to choose fertile, loose, strong drainage and deep soil layer. For the soil with too high alkalinity, it should be neutralized with acid and alkali before planting, because the soil with high alkalinity will affect the growth and development of shallots, and the soil with ph value of 6.0 ~ 7.0 is the best.

4. Fertilization management method for scallion

For the fertilization of shallots, phosphorus fertilizer should be supplemented in time at the seedling stage, nitrogen and potassium fertilizer should be supplemented mainly in the growth period of shallots, and then trace elements should be supplemented appropriately. Nitrogen, phosphorus and potassium fertilizer should be supplemented mainly in different growth periods, combined with the nutritional needs and trace elements of shallots, which is more conducive to the growth and yield increase of shallots.

5. Harvest management

Onion is a vegetable that can be cut and harvested like leek, but it is not perennial, but biennial. Even so, it can be harvested every other month. Here, we must be careful not to harvest every 65,438+00 days because it can be cut and harvested. If the time is too short, it will lead to the failure of onion vegetative roots. It is best to harvest once a month.

Extended data:

Nutritional value of onion

Although the shallot is small and ambitious, it is no less effective than the shallot. Shallot has the effects of clearing away heat and resolving phlegm, stimulating sweat glands, sweating and dissipating heat. Scallion oil stimulates the upper respiratory tract, making sticky phlegm easy to cough up. ?

It has pungent taste, can stimulate the spleen and stomach, and promote digestion and absorption. Onions also have the greatest anti-cancer effect. Onions contain pectin, which can reduce the occurrence of colon cancer. Allicin in onion can also inhibit the growth of cancer cells and has anti-cancer effect.

In terms of nutrition, the contents of protein, minerals and carotene in shallots are relatively high: per kloc-0/00g, shallots contain 72 mg of calcium, shallots only contain 29 mg, shallots contain 840 micrograms of carotene and shallots only contain 60 micrograms.

References:

Baidu encyclopedia-shallot