During the winter months, the time is rushed, and the farmers often pay insufficient attention to some matters, resulting in poor growth of vegetables after planting and many diseases. So, the following points should be paid attention to when changing vegetables during the winter period:
First, the disinfection in the shed must be thorough. After the vegetable was pulled out of the garden, the vegetable grower rushed to catch the estuary, so that the squat vegetables were listed as soon as possible. Most of them rushed to plant after gardening, but neglected the disinfection work of the greenhouse and laid a hidden danger for the outbreak of vegetable diseases. When changing vegetables, we must clean up the dead leaves in the shed and do a good job of disinfection inside the shed. After the vegetable is pulled out, 1000 grams of sulphur powder per acre is mixed with sawdust, and each mixture is placed on each spot of the greenhouse. The used agricultural implement poles and the like are also put into the shed, and the closed shed is lit after dark fire. Fumigation for 12 hours; also available 45% chlorothalonil smoke agent 400-600 grams per acre medication fumigation, fumigation required closed greenhouse for 2 days sterilization, 1-2 days before planting open vent ventilation. The soil in the shed is also to be sterilized. The surface can be sprayed with 30% Thiophanate 1000 times or 95% Hymex Agent 450 times, and then the vegetables can be planted again. In greenhouses with underground pests, appropriate amounts of pesticides can be applied to the vegetables before they are planted to prevent underground pests.
The second is to deepen the soil. Many vegetable farmers did not fully plow their land on sheds due to a hasty rush, but instead only ploughed up the vegetable crops. This is not advocated. It's best to deep-flip it by hand or use a rotary cultivator to fully plow the shed.
Third, basal fertilizer must be fully cooked. In winter, the temperature is low, and chicken manure accumulates outside the shed. The fermentation is often incomplete. In winter, the greenhouses are insulated and relatively airtight. If these chicken manures are not cooked, it is easy to cause harmful gases such as ammonia to accumulate in the sheds, which can damage the vegetables. Therefore, when the vegetables are used for basal fertilization, it is necessary to pay attention to see if the chicken manure has fully decomposed, and the appearance is yellow-brown odorless chicken manure that must be avoided. In order to increase the effect of decomposing, 1000 g of fertility and 2 cubic meters of chicken manure can be mixed, and the decoction effect is better. Certain compound fertilizers with high nitrogen content should not be used during this period.
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