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我县地处历史上著名的微山湖滨湖蝗区南端,解放后治蝗工作取得了巨大成功,至六十年代初期已基本控制蝗害。但近年来蝗情有回升的趋势,值得注意。现根据过去的工作经验,对本县蝗区的发生与演变作一粗浅分析。 一、滨湖蝗区的演变情况 据历史资料统计,在1950—1965年中,夏蝗与秋蝗累计发生面积大于耕地面积之半的有6年(1952、1953、1958—1961),平均不到3年大发生一次。其中,1953年蝗区面积占耕地面
My county is located in the historic southern edge of Weishan Lake locust locust area, liberation locust control work has achieved great success, to the early sixties has been the basic control of locusts. However, in recent years locust situation has picked up the trend, it is worth noting. Based on past work experience, we make a superficial analysis of the occurrence and evolution of this locust area. First, the evolution of the lake locust area According to historical data statistics, in 1950-1965 years, summer locusts and autumn locusts have occurred in an area of more than half the area of cultivated land for 6 years (1952, 1953, 1958-1961), the average is not Once in three years. Among them, 1953 locust area accounted for the cultivated land