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人夏以来,蝗情在中国发生面积之大、分布范围之广、出现密度之高为历年少见。据农业部的统计,夏蝗发生面积比常年增加50%。分布范围涉及黄河中下游地区、以新疆为重点的西北地区、渤海湾地区,西南、东北的部分省、区、市也有发生。部分地区飞蝗密度高达每平方米1000至5000头,远远高出国家规定的每平方米0.5头的防治标准。今年的蝗情严重的一个重要原因是天气干旱。自
Since summer, the locust situation in China occurred in large area, the distribution of a wide range of high-density rare for many years. According to the statistics of the Ministry of Agriculture, the area of summer locusts increased by 50% over the previous year. The distribution ranges from the middle and lower reaches of the Yellow River to the northwestern regions that focus on Xinjiang, and some provinces, regions and municipalities in the Bohai Bay region, southwest and northeast China also occur. Locust density in some areas as high as 1,000 to 5,000 per square meter, far higher than the national standard of 0.5 per square meter of prevention and control. One of the major causes of this year’s serious locust situation is the weather. from