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根据冬前病虫基数、作物布局、气候条件等因素综合分析,预测2003年河南省主要农作物病虫害总体呈偏重发生趋势,部分地区、部分病虫将重发生。预计全省各种病虫发生总面积5.8～6.3亿亩次。具体预报结果如下: 1.东亚飞蝗夏蝗在9市36个县将偏重发生,其中黄河滩区部分县有可能重发生。预计全省发生面积280～300万亩,达标面积180～200万亩;秋蝗也呈偏重发生态势,面积200～250万亩,有150～180万亩将达到防治标准。
According to the comprehensive analysis of winter pest and disease base, crop layout, climatic conditions and other factors, it is predicted that the main crop pests and diseases in Henan Province will tend to be heavier in 2003. In some areas, some pests and diseases will occur again. The province is expected to have a total area of 5.8 to 6.3 million mu of pests and diseases. Specific forecast results are as follows: 1. Locust locust locust in nine cities in 36 counties will be preoccupied, of which some counties in the Yellow River beach area may occur again. Expected to occur throughout the province an area of 280 to 300 mu, up to an area of 180 to 200 acres; autumn locust also showed a tendency to be partial, with an area of 200 to 250 mu, with 150 to 180 mu will reach the prevention and control standards.