Cucumber green mottle mosaic virus disease is a national plant quarantine disease that can harm watermelon, cucumber, gourd, melon, gourd, bitter gourd and other gourd crops. According to investigations, the virus has a high risk of spreading and spreading seedlings of watermelons and other crops. Therefore, towns (sub-districts) must attach great importance to effectively monitor and prevent cucumber green mosaic mottle virus disease, and effectively protect agricultural production. . First, prevention and control technology 1, seed treatment. Seed dry heat treatment or soaking seeds can effectively reduce the probability of seed poisoning of watermelon and its rootstock seeds. The seeds (water content below 4%) were placed at a constant temperature of 72°C for 72 hours. After the germination rate was checked, the seeds were soaked and germinated or directly sowed. At the time of temperature rise and temperature drop, two temperatures of 35°C and 50°C could be set for buffering. Temperature treatment for 24 hours to reduce the impact of high temperature on the seed germination rate; or soaked with 10% trisodium phosphate solution 20 minutes - 30 minutes, washed with water and germination after sowing. In areas with high risk of outbreaks, dry heat treatment combined with chemical soaking can be used to ensure that the virus is not brought into the field. 2. Grafting disinfection. In the course of grafting and other agricultural operations, the opponents and tools were disinfected with 10% trisodium phosphate or 75% ethanol, and were sterilized by grafting once to avoid cross-infection of the virus. 3, rotation for change. Melon crops and non-cucurbit crops should be changed for crop rotation in the centralized planting areas. 4. Strengthen field management. Scientific fertilizer management, nurturing strong seedlings and healthy seedlings, improving plant disease resistance, avoid flooding and excessive nitrogen fertilization, and preventing virus transmission. Second, work measures 1. Strengthen technical propaganda and guidance. The towns (sub-districts) should increase the publicity of watermelon seed distributors, large breeding seedlings, and large planters, and timely inform the cucumber green mottle mosaic virus disease hazards and key prevention and control technology, improve the seed quarantine with card rates and prevention and control Technology in place. To find out the basic conditions of watermelon planting bases and large households within the jurisdiction, establish a regular contact and return visit system and take the initiative to provide technical guidance and services. For large watermelon contracting and planting farmers within the jurisdiction of this jurisdiction, there must be no dead ends for propaganda and full technical guidance. 2, to carry out seed (miao) inspection and quarantine. At present, watermelons in our district are mainly planted in other places, and the quarantine of good seeds is closed to prevent the entry of poisonous seeds into the field. From time to time, the agricultural department conducts investigations and records relevant information on the seeds operating markets and large planters within its jurisdiction to check the source of the seeds and the status of inspection. The re-inspection of seeds transferred from the area of ​​origin shall be carried out. Samples shall be submitted for inspection if necessary, and the sale of seeds without a permit shall be prohibited. The key inspection of seedling breeding bases requires seedling producers to provide information on the source, quantity, place of production, and status of inspection of watermelons and their rootstocks, and to conduct quarantine in strict accordance with relevant procedures. 3, strictly deal with the epidemic. The towns (streets) should monitor and investigate the epidemic situation in the areas where melons are concentrated, seed breeding bases, disease-infested areas and their surrounding areas at the peak stage of manifestation. The suspected infected plants were immediately contacted with the plant protection and phytosanitary station for sampling to the designated units of provincial phytosanitary organizations for laboratory testing. Once the epidemic is confirmed, timely disposition of the epidemic will be carried out to eradicate the infected plants at the site of the disease, and the surrounding cultivated fields of the cucurbits crop will be investigated to ensure that the epidemic does not spread. Clear Vhb Tape,Clear Acrylic Tape,Acrylic Adhesive Tape,Double Sided Vhb Tape Kunshan Jieyudeng Intelligent Technology Co., Ltd. , https://www.jerrytape.com