一、玉米病虫玉米螟一代在春玉米田偏轻发生,二代在夏玉米田中等发生,全省总发生面积850万亩。二代粘虫中等发生,局部偏重发生,发生面积410万亩。玉米双斑长跗萤叶甲中等发生,发生面积500多万亩。蚜虫、红蜘蛛偏轻发生,陕北、渭北旱塬偏重发生,发生面积580万亩。玉米大小斑病中等发生,发生面积500多万亩。 First, corn pests Corn borer generation in the spring cornfield partial light occurred, the second generation occurred in the summer cornfield, the province’s total area of ​​8.5 million mu. Second-generation armyworms occurred moderately, partial emphasis occurred, the occurrence of an area of ​​410 mu. Corn double-spotted long-winged Diabrotica occurs in medium, occurred more than 500 acres of area. Aphids, red spider light partial occurrence, northern Shaanxi, Weibei dry plateau occurs with an area of ​​5.8 million mu. Maize size spots occurred moderately, occurred more than 500 acres of area.