When will asparagus come on the market?

Asparagus is the sprout of asparagus, also known as asparagus, asparagus and asparagus.

When will asparagus come on the market?

The listing time of asparagus varies according to the geographical environment, and asparagus is usually picked in the first and middle of April in various parts of North China. The duration of bamboo shoot picking varies with plant age, climate, soil quality, fertilization management and other conditions. when the number of bamboo shoots decreases and becomes thinner, the harvest must be stopped, and if the harvest period is too long, the growth date of green stems and branches will be shortened. the production and accumulation of nutrients decreased, affecting the yield of tender stems in the second year. Generally speaking, the harvest period in the first year is 20-30 days, and that in the second year is 30-40 days, which can be extended to about 60 days later.

Where is the origin of asparagus?

Asparagus is native to the eastern coast of the Mediterranean and Asia minor. Up to now, there are still wild species in Europe, Asia and the grasslands and river valleys of North Africa. It has been cultivated for more than 2000 years. It was introduced into America in the 17th century, introduced to Japan in the 18th century, and introduced to China at the beginning of the 20th century. It is cultivated all over the world, especially in the United States. Cao County, Heze City, Shandong Province, China is known as the "hometown of asparagus". A grand asparagus festival is held every spring.

Environmental conditions for asparagus planting

1. Temperature: asparagus has strong adaptability to temperature. it can be cultivated from subcold zone to subtropical zone, but it is most suitable for temperate cultivation with distinct seasons and pleasant climate. In the alpine zone, when the temperature is-33 ℃ and the thickness of permafrost reaches 1 meter, it can still survive the winter safely, although the yield is low, but the quality is good. The initial germination temperature of asparagus seeds was 5 ℃, and the optimum temperature was 25-30 ℃, which was higher than 30 ℃. The germination rate and germination energy decreased obviously.

2. Soil: asparagus is suitable for sandy loam rich in organic matter, and grows well on the fertile soil with loose soil, deep soil layer, fertilizer and water conservation and good air permeability. Asparagus can tolerate mild saline-alkali, but when the soil salt content is more than 0.2%, the plant development is significantly affected, the absorbing roots atrophy, the stems and leaves are thin and weak, and gradually die. Asparagus has strong adaptability to soil acidity and alkalinity. All soils with pH between 5.5 and 7.8 can be cultivated, and pH6~6.7 is the most suitable.

3. Moisture: asparagus has low transpiration, well-developed root system and relatively drought tolerance. However, if it is too dry in the bamboo shoot harvest period, it will inevitably lead to the thinness of the tender stem, the retraction of the growth bud and the serious reduction of yield. Asparagus is extremely intolerant to waterlogging, and stagnant water will lead to root rot and death, so the planted land should be highly dry and pay attention to drainage in the rainy season.