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东亚飞蝗的发生面积、发生程度主要受残蝗面积、密度和降水条件的影响;库、湖蝗区的宜蝗面积主要受库、湖水位的影响。同时,东亚飞蝗的发生期主要受蝗卵发育期温度条件的影响。利用上述因子分别对东亚飞蝗的发生面积、发生程度及密度、3龄盛期进行预报,简便易行,准确可靠,时效性强,对指导防治工作十分有益。
The occurrence area and occurrence degree of migratory locusts in East Asia are mainly affected by the area, density and precipitation conditions of locusts. The area of locusts in reservoirs and lake locusts is mainly affected by the reservoir and lake water level. At the same time, the occurrence of oriental migratory locusts is mainly affected by the temperature conditions during the development of locust eggs. Utilizing the above factors to forecast the occurrence area, occurrence degree and density of migratory locusts, respectively, and forecasting the third-year blooming period, the method is simple and convenient, accurate and reliable, time-efficient and is very helpful for guiding and controlling the diseases.