In the past few years, vegetable farmers have generally delayed the time for planting to avoid virus disease in greenhouses, avoiding high temperatures, and some have colonized before and after the 10th. On October 26th, clear cold weather began to appear in most parts of northern China. The temperature dropped suddenly during the night and was catching up with the tomatoes planted in the late 10th period. 1-3 Spike bud differentiation period. At this stage, if not good Pay attention to management and it is very likely that there will be cracks in a few days. Now that tomato winter management has begun, it is recommended to do the following to prevent cracking and reduce losses: 1. To early removal of already cracked fruit, reduce nutrient consumption. 2. Strengthen the temperature management of subsequent flowering and fruit setting. On the one hand, the night temperature of the flower bud differentiation period should not be lower than 12°C for a long time and not lower than 8°C for a short period. On the other hand, to prevent partial application of nitrogen fertilizer to prevent plant growth. 3. Pay attention to calcium and boron. In addition to the base fertilizer applied calcium phosphate and calcium magnesium phosphate fertilizer, calcium supplementation should also be carried out. From the beginning of the seedling stage until the last fruit of the first panicle, the chelated calcium fertilizer was sprayed once every 10-15 days; the second was boron supplementation. Foliar sprayed with 0.1%-0.2% borax solution or 1500 times of boron boron fertilizer, sprayed every 5-7 days, continuous spray 3-4 times. 4. The correct use of anthers. Generally, the first order flower of tomato is often misshapen, and the first flower in the first order has a higher probability of malformation. Therefore, as long as the malformed flower is found, it must be promptly removed. In addition, it should be based on the temperature within the shed. The concentration of the drug used in different temperature points varies greatly. It is necessary to adjust the concentration in time according to the temperature of the flower at that time. It is also necessary to pay attention to grasping the time of the good flowering. Each flower is best when it is half-open to full-time. After opening and opening the flowers, it is easy to form stale fruit and empty fruit. At the same time, it is more appropriate to select a sunny, sunny, sunny afternoon, and to mark the flowers that have passed, do not duplicate the drugs. Shenzhen Mini Hidden Camera 1080P Wifi Intelligent Dv Recorder Wireless Mini Spy Camera Shenzhen Mini Hidden Camera 1080P Wifi Intelligent Dv Recorder Wireless Mini Spy Camera 4G Mini Camera,Shenzhen Mini Hidden Camera,1080P Wifi CCTV,Intelligent Dv,Recorder Wireless Camera,Mini Spy Camera Shenzhen Fuvision Electronics Co., Ltd. , https://www.szsolarcamera.com