How do asparagus survive the winter?

Asparagus is a relatively green and healthy vegetable, water cooking is very nutritious, so how to grow asparagus through the winter?

I. growth habits of asparagus

Asparagus is the seedling of asparagus, also known as asparagus and asparagus, which is planted all over the world.

Asparagus can be cultivated in subcold zone and subtropical zone. Asparagus is a kind of plant with strong adaptability to temperature, but it grows best in temperate zone with distinct seasons and pleasant climate.

The optimum germination temperature of asparagus seeds was 25 ℃-30 ℃, and the germination rate and germination energy of asparagus seeds higher than 30 ℃ decreased obviously.

Asparagus sprouts new stems 2-3 times a year, usually feeding on tender stems sprouted in spring.

How do asparagus survive the winter?

1. Disinfection: the plants on the ground were removed before and after the Beginning of Spring, and the soil was stripped and exposed to the sun, and then ground insects were applied to eliminate the overwintering pathogens.

2. Fertilization: after the asparagus is harvested in autumn, it is necessary to re-apply overwintering fertilizer in order to ensure that the asparagus has enough nutrition to survive the winter.

3. Timely ditch cleaning: more water in the soil will affect the growth of asparagus, so it is necessary to clear the ditch in time to reduce the water level.

III. Disease and pest control of asparagus

The diseases and insect pests of asparagus generally include stem blight, Sclerotinia sclerotiorum, Sclerotinia blight and so on.

1. At the initial stage of the onset of stem blight and Sclerotinia sclerotiorum, 70% methyl topiramate 800 × 1000 times solution, 1% Vuvl 1purl 240 Bordeaux solution and 1000 times solution of 50% desenamine were sprayed 2 times every 10 days.

2. The control of blight can be controlled by soaking the roots for 15 minutes with carbendazim or carbendazim according to 400-500 times of the effective components.