全国农业技术推广服务中心日前称,当前,南方早稻处于抽穗至灌浆期,华南、西南、江南中稻和东北单季稻处于分蘖至拔节期,长江流域单季晚稻处于移栽至分蘖期。由于前期水稻病虫发生态势严峻,各级植保部门高度重视,加大防控力度,有效降低了田间虫源基数,早稻迁飞性害虫发生态势有所缓和;但因南方阴雨天气偏多,稻瘟病和稻纹枯病防效偏低,发生程度和面积重 Recently, the National Agricultural Technology Extension Service Center said that at present, the early rice in the south is in the heading stage to the filling stage while the single-season rice in South China, Southwest China, southern middle rice and northeast China are in tillering stage to jointing stage and the single-season late rice in the Yangtze River valley is in the stage of transplanting to tillering stage. Due to the serious situation of pre-rice pests and diseases, plant protection departments at all levels attach great importance to prevention and control efforts to effectively reduce the field of insect population base, the occurrence of migratory pests in early rice situation has eased; but the rainy weather in southern China, rice Blast and rice sheath blight control effect is low, the occurrence and area of ​​heavy