Management techniques before and after withholding shed of leek in winter

When Chinese chives are cultivated in winter, because of the low temperature, it is necessary to keep warm in the shed to ensure the normal growth of leeks, and the management before and after the shed is also more important, which directly affects the growth and yield of leeks. So how to manage the leek before and after withholding the shed? Let's take a look.

First, management before withholding shed

1. Buckle shed time

Buckle shed time is more important, buckle shed too early, leek grows rapidly, easy to suffer, affecting the final yield; but if buckle shed later, it will make leek into the passive dormancy period, resulting in slow growth. Therefore, the time of withholding the shed should be based on the return to the root of the leek and the expected time to go on the market, which is generally carried out in the middle and last ten days of November.

2. Prepare before withholding the shed

The results, weeds and dead leaves on the ground must be cleaned before withholding the shed, and those with snow should also be cleaned to prevent the snow from melting into the border, reduce the latent stress resistance of pathogens and reduce the degree of disease.

II. Management after withholding the shed

1. Temperature management

The initial temperature of the buckle shed should not be too much, but should rise gradually. The soil temperature can be increased and the height of the pseudostem can be increased by ploughing. The temperature should not be controlled between 18-26 degrees in daytime, 8-10 degrees at night, and the lowest should not be less than 5 degrees.

2. Humidity management

Timely ventilation is one of the important measures to adjust the indoor temperature and humidity, eliminate harmful gases and promote the growth of leek. It can also improve the variety of leek and reduce the occurrence of diseases. Proper ventilation is needed 4-5 days before the first crop leek harvest, and the stew shed is heated after harvest, which is beneficial to wound healing.

3. Fertilizer and water management

Fertilizer and water is the material basis for the growth of leek. Generally speaking, it is necessary to collect frozen water to fertilize before the shed, but not before the second crop after the shed. If there is not enough fertilizer and water in front of the shed, then the plant growth is weak, so it can be properly watered and fertilized in the first crop, and the available nitrogen fertilizer is 20 jin / mu with water flushing.

4. Pest control

Chives maggots are the main pests after buckling shed, which can be controlled by the traditional method of watering organic phosphorus, or by spraying chlorpheniramine after thawing. The disease is mainly Botrytis cinerea and blight. Eggplant Botrytis cinerea can be controlled with 50% prohydantoin suspension 600 times, or 40% Scarlett 600 times solution, while the blight can be controlled with 600 times silver farinoside or 800 times mildew.

The above is the winter leek buckle shed before and after the management technology introduction, hope to help you, want to know more related knowledge, please follow us.