预计今年全国主要农作物病虫害仍呈偏重发生态势,其中小麦和水稻主要病虫将中等或中等偏重发生;蝗虫、草地螟、玉米螟等害虫将偏重至大发生;棉铃虫等棉花害虫发生面积将下降,三、四代发生较重。另外,一些次要害虫将继续上升为害。据测,小麦白粉病在西南、长江流域及黄准、西北麦区的部分阴湿地区;纹枯病在黄淮及江准麦区偏重流行;条锈病总体上偏轻发生,但四川大部将偏重流行,甘肃陇南和天水、陕南、鄂西等地为中等流 It is estimated that the main crop pests and diseases in this country will still be on the rise this year. The major pests and diseases of wheat and rice will be moderately or moderately heavier; the pests such as locusts, meadow moths and corn borer will tend to be heavier and greater; the area of ​​cotton pests such as cotton bollworms will decrease Three or four generations occurred heavier. In addition, some minor pests will continue to rise harm. It is reported that wheat powdery mildew in the southwest, the Yangtze River and Huang Zhun, part of the northwest wheat area of ​​the wet areas; sheath blight in the Huanghuai and Jiang quasi-wheat popular emphasis; Stripe rust overall mild, but most of Sichuan Will be prevalent, Gansu Longnan and Tianshui, southern Shaanxi, western Hubei and other places for the moderate flow