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全国农业技术推广服务中心组织植保系统和科研、教学单位专家分析预测,2014年全国玉米病虫害呈重发态势,明显重于常年,预计发生面积11.7亿亩次,虫害发生8.5亿亩次,病害发生3.2亿亩次。其中,二、三代粘虫在东北、华北、黄淮和西南地区仍有重发的可能,玉米螟在东北、华北大部、黄淮局部偏重发生,二点委夜蛾在黄淮海北部中等发生,大斑病在北方大部大流行风险高。一、发生趋势(一)玉米虫害玉米螟全国总体为偏重发生,累计发生面积3.7亿亩次。其中,一
The National Agricultural Technology Extension Service Center organized the plant protection system and scientific research and teaching experts to predict and analyze the forecast that in 2014, the national corn pests and diseases will be in a reoccurrence situation obviously heavier than the perennial. The estimated area will reach 1.17 billion mu and the pest will occur 8.5 billion mu times. 3.2 million mu times. Among them, second and third generations of armyworms in the northeast, north, Huanghuai and southwestern regions may still have the possibility of retransmission, corn borer in the northeast, most of North China, Huanghuai local emphasis occurred, two instars Spodoptera occurred in northern Huanghuaihai medium In the northern part, the great spot disease is at a high risk of a pandemic. First, the occurrence of trends (a) corn borer Corn borer overall emphasis on the occurrence occurred, the cumulative area of 370 million acre. one of