据农业部消息,受病虫源基数大、气温偏高、台风登陆次数多和持续降雨等因素的影响,目前和今后一个时期中国部分地区病虫害重发频发,发生程度显著重于上年同期。要夺取中晚稻丰收,必须做好重大病虫害防控工作。 According to the Ministry of Agriculture, affected by such factors as the large base of pest and disease sources, the high temperature, the large number of typhoon landings and the continuous rainfall, the incidence of pests and diseases recurring in parts of China now and in the coming period is more pronounced than in the same period of last year . To seize the harvest in the late rice, we must make major pest and disease prevention and control work.