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Base fertilizer application under normal conditions, due to the foot of the upper louse is more than enough, generally no longer a lot of fertilizer when changing, only with a small amount of organic-inorganic compound fertilizer or other organic fertilizer. Pay attention not to use organic fertilizer that has not been cooked when it is changed, so as not to cause harm to the rear-row vegetables.
It is not true that many vegetable farmers plowed the soil to plant vegetables. It's best to go all deep.
Rigging and ridging can increase the light-receiving area of ​​the soil and help increase soil temperature. Should be based on row spacing into a high ridge 20 to 25 cm, to avoid flat planting or planting.
The speed of seedling transplanting after transplanting with water depends on the temperature (especially ground temperature). Therefore, transplanting in winter should not be watered. The scientific method is to transplant the planting hole with planting water. The watering amount per hole is about 0.5 kg, and the seedlings will be sealed after seeping. After the seedlings grow, they are watered again.
Covering the plastic film with the mulching film has a very obvious effect on reducing the humidity in the shed and raising the ground temperature.
Soil-transmitted soil disease has a low ground temperature in winter and long time for seedlings to grow. The chance of seedlings becoming infected with germs is greatly increased, and it is prone to seedling disease. A small amount of pesticide can be applied at the transplanting point to prevent diseases.
Two sheds of greenhouses are cultivated in the year, and the rush peaks are entered at the end of December or early January. This period is the lowest temperature period in a year. The following points should be observed when changing sheds: