In the cold winter, most flower seedlings and diseases will enter the wintering (or dormancy) state in various ways. During this period, various pests are basically inactive and their mobility is small. This is a good time for pest control. If the measures for winter prevention and control are effective, the degree of harm caused by pests and diseases in the next year will be greatly reduced, and the results will be even more effective. I. Clearing the Pathogens (Bacteria) or Overwintering Eggs of Most Flowers and Plants in Nurseries Most of the pathogens (whole fungi) or overwintering eggs in the nursery are wintered in the litter and weeds in the garden, and will be released when conditions are favorable in the coming year. Therefore, in the winter, the litter and weeds in the garden are completely cleared and destroyed to improve the sanitary conditions, which can greatly reduce various pests and diseases. This has a significant effect on the control of rose, rose, chrysanthemum, peony, sea lice and alfalfa, willow and other flowers anthrax, powdery mildew, rust, red spider, moth. Winter pruning is one of the important links in nursery management. In combination with winter pruning, the branches and branches with pests are mainly cut off, and the branches and leaves of the cut off pests are promptly cleaned up and treated in a centralized manner. Second, winter plowing deep-flooded soil before the forest farmland, both loose soil moisture, accumulate rain and snow, promote root growth, but also can turn the remaining litter into the soil, while turning the soil in winter over the pest On the ground, they are preyed or frozen by natural enemies. Removal of weeds and shrubs, removal of oocysts, and freeze-killing of eggs and body parasites significantly reduced overwintering populations. In addition, deep tumbling can bury the pathogens in the soil surface into deep soil layers. Pathogens in deep soil layers are turned to the ground, destroying the pest's habitat and effectively controlling the occurrence of pests and diseases. Third, pest control December is an important period for the prevention of pests and diseases, this period should be mainly to prevent pests and diseases. 1. To maintain the environmental hygiene of flower and vegetable cultivation can reduce the pest and disease. 2. New trees introduced from other places must undergo strict quarantine to prevent pests and diseases from spreading. 3. When pests and diseases are found, they should be controlled in time. Individual flowers that are endangered by pests and diseases should be isolated as soon as possible; if they are seriously injured and cannot be treated, they should be burned or buried in a timely manner. 4. In winter forest, flowers painted white or lime sulfur mixture. Branch whitening can not only effectively prevent the freezing damage of winter flowers and trees, improve the disease resistance of flowers and trees, but also destroy the wintering sites of pests and insects, and play a dual role of both anti-freezing and insecticidal. In particular, the prevention and control of fleas and ticks that have been overwintering in the bark is particularly good. The commonly used whitening agent formula is: 5 kg of quicklime, 0.2 kg of lime sulfur concentrate solution, 0.3 kg of salt, lard (with other animal and vegetable oils) 0.2 kg, and water of 17 kg. Preparation method: Lime and salt are opened with water, and then the lard and lime sulfur stock solution are added to stir well. Special Note: Quicklime must be fully digested, otherwise it is easy to cause burn after being applied to flowers and trees. Since various pests in winter are dormant, winter medicines can be used for those pests that are not easily controlled during the season. For example, the oil emulsion with 50-100 times liquid can be sprayed to control the scale insects. Spraying 1% Bordeaux mixture in the late winter for 2 to 3 times can play a good role in controlling various diseases such as tree rust and rose black spot. Infrared Forehead Thermometer,Portable Infrared Thermometer,Non Contact Forehead Thermometer Gun Dongguan Keyutai Mask Co., Ltd. , https://www.maskkytai.com