The more the rice water weevil is a quarantine pest, the parthenogenetic type, the adults eat rice leaf meat, and the larvae damage the rice roots, resulting in reduced tillering and dwarfing of rice plants. When the damage is serious, the rice roots are eaten. The rice plants are eaten. Withered. According to the survey, if there is no specific control of rice water weevil, the loss rate of rice is 20% to 80%. The overwintering adult of rice water weevil in the county began to move in late March and entered the peak in mid-April. In mid-April to late May, it infested the leaves of the seedlings in Putian or Daejeon. From mid-May to late-June, the larvae infested. Rice roots. At present, the damage of rice water weevil is mainly in the Changlun and Chengnan areas in the eastern part of our county, and it is heavier in Liutang Township. Control methods are: I. Agricultural measures 1, adjust the planting period, planting transplants at an appropriate time, can reduce the harm. 2, strengthen fertilizer and water management. After the transplanting and transplanting, keep the shallow water live and wet irrigation; apply “nitrogen-enhanced potassium and phosphorus supplementation†to reduce the risk of adult pests. 3, autumn plough to kill the adult. 4, protect frogs, spiders and other predatory natural enemies. Second, grasping wintering places and adult control of wintering in Putian 1. Unified prevention and control of public areas. From the end of March to the beginning of April, the village groups organized and controlled the public areas around the paddy fields, such as ditches, field ridges, hillsides, and barren land that have been damaged. 2, Putian prevention. Before the rice was thrown in, the Putian was controlled for three days after the film was removed in Putian and seven days before the intervention. 3, field control. In May and mid-May, combined prevention and treatment of adult worms and larvae. Third, the anti-drug Each acre was sprayed with avermectin 80 ml +10% imidacloprid 20 g water 50-60 kg. Fourth, strengthen quarantine to prevent the proliferation of spread In order to control the damage of rice water weevil and spread of the epidemic, we must strictly control the transport of straw, rice and seeds in the epidemic area to the non-epidemic area. YT-T15 YT-T15 Shenzhen Sunshine Technology Co.,Ltd , https://www.yatwinsz.com