Deep winter vegetables change the "three wants" effect is good
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. Then, the following points should be noted when changing vegetables during the winter period.
First, disinfection in the shed must be completed after the vegetable gardening, the vegetable farmers in order to catch sips, so that the early listing of the next quail vegetables, most of them rushed to plant after the garden, and neglected the disinfection of greenhouses, laid the hidden dangers for the outbreak of vegetable diseases outbreak . 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 the fact that the soil has to be deep-turned by many vegetable farmers because of the hasty rush, and there has been no comprehensive ploughing of the shed land, but only the vegetable planting hoe has been ploughed. This is not advocated. It's best to deep-flip it by hand or use a rotary cultivator to fully plow the shed.
Third, the base fertilizer must be fully decomposed and the winter temperature is low, and chicken manure is often not thoroughly fermented outside the shed. 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 decomposing effect, 1000 g fertility and 2 chicken manures 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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