Precautions for Vegetable Cropping in Greenhouse in Winter

Winter vegetable stubble, many farmers do not pay enough attention to some matters, poor growth after vegetable planting, so in winter vegetable stubble need several problems, the following and Xiaobian to understand it.

1. Clear the garden for disinfection

The diseased leaves and fruits of the previous crop all carried one or more bacteria and eggs in different degrees, especially Botrytis cinerea. A large number of pathogenic spores were carried on the diseased leaves and fruits. As the leaves and fruits fell, the pathogenic spores fell on the surface and spread to every corner of the shed. After all the vegetables are pulled out of the garden, the dead branches and leaves should be invited out of the shed immediately, and the disinfection work should be done at the same time. Chlorothalonil can be used for fumigation. When fumigating, the shed must be sealed for two days and ventilated before planting. This can kill the pathogen and greatly reduce the incidence of disease.

2. Improve the soil.

In order to save trouble and do not dig deeply, many vegetable farmers immediately plant the next crop of vegetables after a simple paddle hoe, because there is no deep turning of the whole shed, chicken manure cannot be spread, and many vegetable farmers choose to apply chicken manure, and once they pack immature chicken manure, it is extremely easy to cause root burning and gas damage. In addition to fumigation and disinfection, vegetable farmers can also use high-efficient and low-toxic pesticides such as avermectin to plant in the next crop. In this way, nematodes can be controlled and roots can be protected within 2-3 months. Biological bacterial fertilizer can also be applied with organic fertilizer. The method of bacteria inhibition can be used to create an excellent soil environment for crop growth.

3. Promote seedling retardation

After planting vegetables in spring, it is easy to form stiff seedlings because of low temperature and slow root system, so it is necessary to refine seedlings for 2-3 days before planting. For legumes and eggplant vegetables, the temperature in the greenhouse is controlled between 25-28 degrees during the day and 14-15 degrees at night. Melons and vegetables are controlled at 26-30 degrees during the day and 14-16 degrees at night. After the seedlings were refined at low temperature and then planted, the seedlings were adapted to the growing environment in the greenhouse, and the seedlings slowed down faster.

4. Cultivate strong trees

In 4-5 days of vegetable planting, when there are white roots in the planting hole, it shows that the root system grows well, so it can squat seedlings properly and is conducive to the cultivation of strong trees. Let out the air when the temperature is higher than 28 degrees during the day, initially keep the temperature between 25-28 degrees during the day and 15-16 degrees at night, then gradually cool down and keep the temperature difference between 10 and 15 degrees. The temperature in winter is low, the growth of vegetables is slow, and there is little demand for water. Water can be properly controlled in production, which is helpful to restrain plant growth, promote root growth and cultivate strong trees.

The above is the winter greenhouse vegetable stubble points for attention, hope to help you, want to know more related knowledge, please follow us.