Reasons for winter cucumber death or wilting:
1, fat damage. One is to apply fertilizer that is not fully decomposed, and the other is to apply too much fertilizer.
2, in the case of continuous rain or rain and snow, the sudden clear, will cause the original water shortage of cucumber acute atrophy, such as a long time, remedial measures are not timely, easy to cause dead seedlings.
3. Ventilation is unreasonable. Cucumber enters the stage of flowering and melon, high temperature on sunny days, large amount of air release, fast transpiration of leaves, some plants with poor roots begin to wilting, and the whole plant withered water is withered.
4, cold damage or freezing damage. When the temperature is low or the temperature is lower than -10 °C, the cucumber in the solar greenhouse is prone to chilling or freezing damage. Vegetable farmers often suffer from insufficient preparation due to high temperatures in winter for many years. They cannot defend when they encounter low temperatures, and the plants die due to cold damage or freezing damage.
5, roots. The phenomenon of dead seedling caused by alfalfa root occurs mostly in the seedbed or shortly after planting. Because of the too much watering in the seedbed or cultivated field, the soil moisture is high at low temperature, the roots are smashed, and the ground part is wilted and even dead.
6, the disease. The dead seedlings of cucumber seedlings in the solar greenhouse are mostly caused by rickets and blight. After colonization, the dead trees are more likely to be diseased, such as blight, blight, root rot, and blight.
Winter cucumber wilting, dead tree solution:
1. Apply fully decomposed organic fertilizer. Organic fertilizer must be decomposed by high temperature, generally more than 50 days in summer and more than 100 days in winter (most vegetable farmers do not have such time slots, so should pay attention to decomposing), can apply high fertility and speed up decomposing. In the case of a large amount of organic fertilizer application, no fertilizer is applied or less, and a single nitrogen fertilizer is applied less when planting. Topdressing needs to be more than 10 cm from the seedlings, and watering after topdressing.
2, after the rain or heavy snow, it is necessary to gradually see the light, such as the wilting of the seedlings, timely shading and hydration.
3. Increase the amount of light. Remove the grass as early as possible on a sunny day, and clean the membrane surface frequently to increase the light transmittance. Even when there is no direct light, there is still scattered light. As long as the indoor temperature of the grass is not significantly reduced, it is necessary to uncover the cucumber. In addition, the hanging reflective screen, using lighting to supplement the light, has a significant effect on reducing dead seedlings and turning melons.
4, the vents should be from large to small. Check the shed film for damage or leaking every day, pay attention to repair. Cover the grass before the wind blows down to prevent cold wind from invading the wound and melon seedlings.
5. In order to prevent extreme low temperature, the thickness of the back wall of the solar greenhouse should not be lower than the local reasonable value. It can be covered with grasshopper and rain film. The wall around the solar greenhouse is surrounded by grasshoppers. In the shed, a small shed is attached, and the shed is covered with grass stalks. After the vines are extended, the fire can be supplemented by a fire or a charcoal basin.
6, the winter temperature, low temperature, watering should be a small number of times, do not flood the water. Into the season of fruiting, you can combine topdressing and watering, water and fertilizer, and apply once every 10 days. Watering should be watered on sunny days, avoiding watering in the afternoon and evening.
7. Select resistant varieties, do a good job of disinfection of seeds and seedbed soil, and find that the diseased plants are pulled out of the shed in time, and the surrounding plants are treated.
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