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. For this reason, water and fertilizer management should be grasped during production, and production increase should be promoted.
Fertilization 1. After soil testing, according to soil nutrient conditions and the law of growth and fertilizer requirements of cucumber, formula fertilization to meet the growth needs of cucumber. Judging from the current status of greenhouse soil, the fertilization law suitable for cucumber growth is organic fertilizer plus compound fertilizer plus micro-fertilizer plus active beneficial bacteria fertilizer, and organic and inorganic fertilizers should be combined. 2. The top dressing is mainly composed of multi-element compound fertilizer and organic fertilizer, combined with biological bacterial fertilizer, and the combination of base fertilizer and red fertilizer is adopted. This can activate the soil layer, thereby increasing the area of ​​root extension and supplementing the large amount of nutrients needed by the plant. Must not blindly increase the amount, such as the base fertilizer too much, will cause burning seedlings; if too much fertilizer fertilization, easily lead to rot, roots and so on. With aging of the shed age, proper application of biological bacterial fertilizer is one of the feasible measures to improve the soil. Biofertilizer contains a variety of beneficial bacteria, which can activate soil, increase low temperature, and regulate soil nutrient. Therefore, proper application of biological fertilizer can promote root development and improve cucumber disease resistance.
Watering 1. Watering time: The winter greenhouse cucumber should be selected to water in the sunny morning, because the water temperature is closer to the ground temperature, the ground temperature is easy to increase, and the afternoon there is sufficient time for dehumidification. Try to avoid watering in the evening and even cloudy days to avoid increasing the humidity of the air and causing the occurrence and spread of vegetable diseases. 2. Watering capacity: When the cucumbers in winter greenhouses are seriously deficient in water, they must not be over-watered at one time, which can easily cause root anaerobic suffocation and rot. Try to pour small water, at the same time, but also pay attention to dampness as much as possible, if the humidity is too large, it is easy to cause downy mildew, bacterial spot disease and other diseases. 3. Watering water temperature: In the winter, watering is the best choice for groundwater. The water temperature should not be lower than 8°C. The water temperature should be restored as soon as possible on the day of watering. It is very important to promote the management of fertilizer and water for winter cucumbers.
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