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.
First, fertilization. 1, after the soil testing, according to the 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.
Second, watering. 1, watering time: Winter greenhouse cucumber should be selected to water in the sunny morning, because at this time the water temperature is closer to the ground temperature, the ground temperature is easy to increase, but there is sufficient time for the afternoon of humidity. 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, the amount of water: winter greenhouse cucumber severe water shortage, not a one-time watering is too large, likely to cause root anaerobic suffocation 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: winter watering is the best choice for groundwater, water temperature can not be lower than 8 °C, watering the day to restore the ground temperature as soon as possible, overwintering cucumber, do a good job of fertilizer management, is to promote the increase in production is very important.
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