How to grow asparagus with high yield? What are the places of origin?

Asparagus because of its edible tender stem, shaped like Reed buds and bamboo shoots, so many people in China have used to call asparagus asparagus. So where is the origin of asparagus? How to plant high yield?

Where is the origin of asparagus?

Asparagus is mainly produced in China, Peru, Germany, France, Spain, the United States, Japan and other countries.

China has become the largest producer and exporter of asparagus in the world.

Asparagus is widely cultivated in China. At present, except for Xizang and Qinghai, asparagus is planted in other provinces, 90% of which are concentrated in Shandong, Henan, Jiangsu, Hebei, Shanxi and Shaanxi provinces in the Huang-Huai River Basin. Among these provinces, Shanxi has the largest cultivation area.

Second, how to grow asparagus with high yield?

1. Parcel selection

The suitable soil environmental characteristics of asparagus are as follows: fertile soil, deep soil layer, low groundwater level and so on.

In the choice of soil quality, the effect of sandy soil is better than that of clay soil. Before the start of soil preparation, comprehensive fertilization should be carried out to add fertilizer. The main fertilizers are organic fertilizer, compound fertilizer and so on. It is necessary to ensure uniform distribution of fertilizer per 667m2. Then turn the soil deeply into the bed, and rake the field flat. After that, the planting ditch was excavated, and the depth and width of the trench were maintained at 30cm and 40cm, respectively.

2. Seed treatment

Asparagus treats the seeds before sowing. Put the seeds in clean water and remove the chaff seeds floating on the surface of the water immediately. The remaining seeds need to be washed and soaked many times. The water temperature of seed soaking should be kept at about 2530 ℃, and the water should be changed every day. Drain the seeds after being fished out. Then use wet gauze to moisturize and accelerate the germination of the seeds, when the seeds are white, you can sow the seeds.

3. Planting at the right time

Sow asparagus in the right planting season. The ground temperature of sowing is generally maintained at 18-20 ℃. If it is planted during the Spring Festival, it should be done after the frost period, because the rise in surface temperature during that period will help asparagus sprout earlier. If the sowing time is too late, the plant growth of asparagus will be slower and the shape of the mother plant will be smaller.

4. Field management

The key point is to cultivate soil and weed and water and fertilize to ensure the full growth of asparagus stems. In terms of the demand for trace elements in juvenile management, N and K are the main, and auxiliary parts are Ca, Mn, Zn, Cl and so on. In the process of asparagus germination, organic fertilizer can be applied at one time. And according to the actual situation of the season, the bamboo shoot field will be loosened.

5. Pest control

The main diseases of asparagus are stem blight, and the main control methods are: selecting suitable planting land, reducing the spread of bacteria and bacteria in the process of soil preparation, selecting varieties with strong disease resistance in seed selection, using drugs to sterilize, and so on.

The main pests of asparagus are mole cricket, ground tiger, grub, golden needle worm, aphid, beet armyworm, cabbage armyworm, thrips and so on. Chemical control and biological control should be combined.

6. The harvest of asparagus

Relay fertilizer should be applied at the beginning of asparagus harvest. Generally speaking, force fertilizer must be added many times in the first 4 months of the bamboo shoot harvest period. The addition of force fertilizer can be applied in ditch soil at first, and then irrigation can be used to flush fertilizer.