论文部分内容阅读
据陕西各地监测调查,玉米、水稻主要病虫总体偏轻发生,马铃薯晚疫病在陕北局部偏重发生。一、玉米病虫害总体偏轻。据各地监测调查,当前玉米主要病虫害有玉米螟、双斑萤叶甲、大小斑病,全省各类病虫害累计发生面积1230万亩,防治面积640万亩。二代玉米螟目前正处于危害末期,总体偏轻发生,发生
According to surveys and surveys in various parts of Shaanxi Province, the main pests and diseases of maize and rice are generally mild and the late blight of potato occurs locally in northern Shaanxi. First, corn pests overall light. According to surveys and surveys conducted by various localities, the current main corn pests and diseases are corn borer, double-spotted leafhopper and size spot disease. The cumulative area of all kinds of pests and diseases in the province has reached 12.3 million mu and the control area is 6.4 million mu. Second-generation corn borer is currently at the end of the crisis, the overall partial light occurred