The fertilizer and water management of cucumber in winter greenhouses is very important. If the fertilizer and water are not managed properly, it will cause bad phenomena such as rot, roots and leaves yellowing. Therefore, to remind the vegetable farmers that the management of cucumber fertilizer should be careful.
First, fertilization
Organic fertilizer and inorganic fertilizer combined. After effective soil testing, formula fertilization was performed according to the previous conditions of the soil and the needs of the cucumber to meet the crop growth requirements. The general rules of crop fertilization are organic fertilizer plus compound fertilizer plus micro-fertilizer plus active beneficial bacteria. The fertilizer was mainly composed of multiple compound fertilizers and organic fertilizers, and the combination method of base fertilizer and redox fertilizer was adopted. This can activate the soil layer, thereby increasing the area of ​​root extension and supplementing the various nutrients needed by the plant. Some vegetable farmers in the fertilization, blindly increase the amount, such as the base fertilizer too much, will cause burning seedlings; if the fertilization amount is too large, easily lead to rot, roots and so on. Therefore, it is necessary to grasp the right amount when fertilizing, and after the fertilization, the cultivator must be cultivated in time. Biofertilizer contains a variety of beneficial bacteria, which can activate soil, increase ground temperature, and regulate soil nutrient. Therefore, appropriate application of bio-fertilizer can promote root development and improve cucumber disease resistance.
Second, watering time
Winter cucumbers in greenhouses should be selected to be watered on a sunny morning, because the water temperature is close to the ground temperature, the ground temperature is easy to increase, and there is sufficient time for dehumidification in the afternoon. So try to avoid watering in the evening and even when cloudy, so as to avoid the occurrence and spread of vegetable diseases.
Third, the amount of water
If the cucumber in the greenhouse is seriously deficient in winter, the amount of water must not be too large. In this case, the soil is prone to lack of oxygen and causes the roots to suffocate and rot. The leaves of the aboveground plants are yellow and even die.
Fourth, the water temperature
In winter, watering cucumbers is the best choice for groundwater. The water temperature must not be lower than 3°C, and the amount of water should be small. On the day of watering, ground temperature should be restored as soon as possible. At the same time, try to get rid of moisture, if the humidity is too high, it is easy to cause downy mildew and powdery mildew.
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