Rice stripe disease, a virus disease transmitted by the planthopper, has risen to an important disease threatening rice production. Faced with this year's larger base of the winter planthoppers and rice stripe disease may be a pandemic trend, we must do a comprehensive prevention and control work. The japonica rice varieties resistant to (resistant to) disease in the current production of resistant (resistant) varieties were Zhendao 99, Yanglu 9538, Yandao 8, Xudao 3, and Yangfujing 7, etc.; Japonica hybrid rice had Fengyouxiang , excellent 084 and so on. Objectively speaking, these resistant (resistant) varieties are not absolutely disease-resistant, and they will still develop under certain conditions, and measures need to be taken to prevent and control them. All localities should select suitable resistant varieties for local cultivation according to the types of zoning. Insist on disease prevention and control, and control the first and second generations of Smilax glabra herbicides for prevention and control of wheat fields, prevention and control of field crops, and control of field crops. Prevention and control of field cropping and early field cropping are very important for the eradication of planthoppers. The prevention and control strategy adopted is "Changzhi's pressure base for the first generation, re-treatment of second-generation insect control, and skillful management of three generations of broken roads." The wheat field is mainly used to control the nymphs and generations of adults of the Smilax sibiricus generation, in order to reduce the number of insect and source bases. The key field of prevention and control is the wheat field in the epidemic area of ​​rice stripe disease in the previous year, and the overwintering generation and the generation of large scales of S. infestans. The peak of young nymphs of Laodelphax striatellus was fumigated with dichlorvos and mixed virgin drugs. The object of control in Putian period is the nymphs and generations of adults of the Smilax lapidae generation, with 5% perindrometic 30 ml, 10% imidacloprid 20 g, or 5% fipronil 30 ml, mixed aldicarb 30-40 ml, plus 30 Kilogram spray, but also use isoprocarb, powder and other net agents. The period of application starts from the heart stage of 1 leaf of the seedlings, and the whole seedlings are prevented and treated 3 times, so that the medicine is transplanted. The object of control in field stage is the second-generation nymph of SBPH and the second-generation adult, which is an important measure to control the second incidence of rice stripe disease. The amount of field control depends on the amount of insects. The heaviest field occurs 5 to 7 days after the rice is planted. The second generation of nymphs hatches for the first time, and once every 5 days, it is administered continuously for 2 to 3 times. Pharmacides can also be used with fipronil, imidacloprid, or fipronil, chlorfenadin. Attach importance to agricultural control and improve cultivation techniques (1) Reasonably adjust the variety layout. In severely afflicted areas, the planting area of ​​susceptible japonica rice varieties should be reduced, and the planting area of ​​disease-resistant hybrid japonica rice varieties should be appropriately expanded. Identify the main cultivars, eliminate planting of flowers and implement contiguous planting. (2) Adjust the sowing date. The japonica rice varieties should be sowed late, avoiding the peak of migration of Laodelphax striatellus, or sowing resistance (resistant) varieties and then broadcasting conventional varieties. (3) Promote the use of light cultivation techniques such as dry seedlings, plastic trays, and rice transplanters. Compared with the moist seedlings, dry rice seedlings of rice have lighter occurrence of stripe disease and lighter cultivation methods have less incidence. (4) clean the pastoral. Putian should be far away from the wheat fields and thoroughly remove the weeds in Datian and Datian fields and the ditch and reduce the breeding sites for fly hoppers. (5) The management of fertilizer and water in Putian and Datian will be strengthened to control the amount of nitrogen fertilizer and increase the application of phosphorus and potassium fertilizers. Seedlings grow vigorously to prevent overgrowth of seedlings. In the Datian period, it is necessary to promote control and integration, cultivate healthy individuals, and enhance resilience.
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