Five necessities for raising orchids in winter

First, regulate water and fertilizer and promote the growth of pregnant buds.

Orchids enter the dormant period in winter, so it is inevitable to regulate the management of water and fertilizer. First, reduce the amount of watering. As the saying goes, "Winter is not wet" is a clear requirement for winter watering. The temperature is low in winter, the vegetative growth of orchids in dormant period almost stops, the reproductive growth is slow, and the transpiration of small environment in the basin is small, so the orchid needs less water. This requires us to reduce the amount and frequency of watering than in spring and autumn, with less watering and a longer watering interval. We can use the alternating watering method of watering and basin moistening to keep the basin soil moist. In winter, do not dry potted soil, otherwise, a little frozen, bluegrass is empty root and die. The second is sparse fertilization. Dormant orchids basically do not absorb fertilizer, but proper foliar spraying of some thin phosphorus and potassium fertilizer is good for orchids, which can not only provide nutrient transport for orchid buds and growing stamens in autumn and winter, but also protect orchids from the cold in order to survive the winter safely. Because the phosphorus element in the fertilizer can reduce the freezing point of the plant, potassium can increase the cellulose of the plant and make the stem and leaf cortex tough. The application of phosphorus and potassium fertilizer to experienced Lanyou in winter can effectively enhance the stress resistance of orchid plants and reduce the occurrence of diseases. However, it is better to stop applying nitrogen fertilizer in winter so as not to break the reproductive growth, affect the flowering of bluegrass and reduce the resistance of bluegrass.

Second, grab the light and refine the grass to enhance the resistance

If bluegrass wants to pass the winter smoothly, strengthening the resistance of bluegrass has become an important task of orchid in winter. One is to increase the light. The winter sun is not only of great help to the enrichment of the false bulb, but also to the growth and reproduction of the following spring. Before entering the room, under the condition of ensuring ventilation, let the bluegrass receive light as much as possible, open the shade net and Reed curtain fully, and direct oblique sunlight, so that the bluegrass accumulates more energy through photosynthesis. The second is to refine grass properly. The low temperature in winter not only promotes the growth and strength of the flower buds formed by orchids, but also plays an important role in promoting the bud eyes on the pseudobulbs to differentiate into flower buds in the following year. Therefore, when the temperature is not too low in early winter, do not rush to let bluegrass into the house, let bluegrass after a period of low temperature exercise, help to enhance the ability of bluegrass to survive the winter. Cymbidium, in particular, needs to be honed by vernalization. The third is to apply fertilizer slightly. As mentioned earlier, in the sunny and warm winter weather, a small amount of phosphorus and potassium fertilizer is beneficial to improve the resistance of bluegrass. If the phosphorus and potassium fertilizer and aspirin are applied alternately, the effect is better.

Keep warm and frost-proof and survive the winter safely

The important management and protection measure of orchid affairs in winter is to do a good job of anti-freezing. When the temperature is below 0 degrees, it is harmful to all kinds of orchids. In any case, the basin noodles of orchids should not be frozen. If the front of the orchid leaf is found to be covered with dense and thin dots in winter, but the back is intact, it is caused by frost injury. Do a good job of anti-freezing, first, basin noodles can keep warm. Water moss can be arranged on the basin surface to keep warm and humid. Second, bluegrass should be properly arranged. The orchid species with cold tolerance from high to low are Cymbidium, Chunlan, Jianlan, Hanlan and Cymbidium. When the severe cold comes, the orchids should be brought into the house in time, or moved to the eaves and sheds for maintenance to strictly prevent frost and snow invasion. If the ambient temperature of Chunhuilan can be controlled above 0 degrees, and the temperature of Jianlan, Hanlan and Cymbidium can be controlled at 3 to 5 degrees, the orchid grass can survive the winter safely. The third is to take measures to warm up. Modern orchid rooms have air conditioners to control the temperature, but we must pay attention to humidification. Simple orchid room can use electric heating rods, basin charcoal fire heating, some orchid friends in the orchid shed with gas stove ignition heating, the effect is also good, but we should pay attention to prevent gas poisoning. Some orchid friends fill the thermos bottle with hot water and open the bottle cap to heat up the Yangtai orchid room, which is also worth using for reference.

Fourth, protect flowers and promote buds and ensure achievements

Careful maintenance of flower buds and leaf buds in winter is the key to ensure the fruit of magnolia in the coming year. One is to take care of the bud. The temperature of the orchid room should be controlled at 1 to 18 degrees and the humidity should be controlled at 60% to 70%. According to the principle of getting rid of the weak and staying strong, it is appropriate to spend time. Flowers have been determined to make its multiple grass, the flower can be removed as soon as the dew, the technique is to pinch the bud with your hands, twist 90 to 180 degrees, you can apply some fungicides to the wound. If the flowers are undecided, leave one or two strong grasses. There are buds in front and back, weak bracts in front and strong bracts in front of them. It is necessary to minimize unnecessary consumption and affect the germination and flowering in the coming year. Especially the grass that has just come down the mountain should pay special attention to avoid the tragic occurrence of the death of flowers and grass. The second is to take good care of leaf buds. As long as the orchid buds germinated in autumn and winter are properly protected, they will grow into grass in spring and summer next year. It is necessary to grasp the principle of "proper watering, a small amount of fertilization" and careful maintenance of blue sprouts. Winter temperature is low, water is not easy to evaporate, especially pay attention to not splashing water and fertilizer into the bud, in order to prevent rotten bud. If you accidentally splash water and fertilizer into the bud, suck it dry with soft paper.

5. Eliminate bacteria and insects and eliminate hidden dangers

The complete elimination of hidden dangers of diseases and insect pests in winter is the first pass to prevent blue disease. First, it is necessary to comprehensively clean up the orchid room. A clean and tidy orchid environment is a necessary condition to reduce orchid disease. after a comprehensive renovation of the orchid room, the walls, floors, basin walls and orchid racks are all sprayed with insecticides in place, so that the dormant Sclerotinia eggs have nowhere to hide. The second is to use medicine regularly to remove bacteria and insects. The growing period is a week of medication, and in winter, the foliar spray is used alternately in half a month or a month, and occasionally irrigated to crack down on root diseases. In winter to advance the prevention and control of orchid diseases and insect pests, next spring when the fungus and insects wake up season, and then a comprehensive eliminate virus, the effect will be much better.