Cause of the disease: It can overwinter on the inside and outside of the seed and on the diseased body, and it can survive in the soil for 2-3 years with the diseased body. The disease is mainly invaded by a variety of wounds, but also from the plant stem or pedicel invade, into the fruit of the vascular bundle of embryos, invade the seed umbilical or seed coat, causing seed bacteria. When diseased and healthy fruits are mixed and harvested, the bacteria will contaminate the seeds and cause the seeds to carry bacteria. The seeding rate of the seeds is generally 1%-5%, and the seriousness may reach 53.4%. In addition, pathogens can also invade directly from the epidermis of the trichomes and young fruit of the leaves. The long-distance transmission of the disease mainly depends on the transport of seeds, seedlings and unprocessed fruits. Near-distance transmission mainly depends on rainwater and irrigation water, especially continuous rain and storm, and agricultural operations spread and spread. Warm and humid, long duration of heavy condensation. Control methods: In the early stage of tomato canker disease, use plant cell membrane stabilizer (Vine Soap Tianda 2116) 25g + veterinary veterinary examination 2 bottles (10ml/3.6g) + veterinary norfloxacin (50g / 1.25g) + 2.5g of organic silicon mixed to spray 15kg of water. After spraying, wipe the greenhouse film to increase the light transmittance in the shed, and warm it up to 40°C for 3-5 hours. In order to prevent the seedlings from being exposed to high temperature hazards, spray the tomatoes with water and spray before spraying. Field investigation confirmed that 48 hours after spraying, the lesions on the fruits began to decline, and the lesions disappeared at 72 hours. After 48 hours of supplemental spraying, the ulcer lesions were healed and no longer relapsed. The control effect was very satisfactory. According to statistics, the application of this method to control tomato canker disease can recover economic losses of 7,000 yuan per 667 tons. The tomato pesticide residues produced are extremely low or no pesticide residues can be detected, which fully meets the quality requirements of class A green agricultural products. Hotel Safe Box,Password Hotel Safe Box,Hotel Electronic Safe Box,Safe Box Hotel Room Hebei Yingbo Safe Boxes Co.,Ltd , https://www.yingbosafes.com