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在综合分析病虫发生基数、小麦品种布局和耕作制度等情况的基础上,结合未来天气趋势,全国农业技术推广服务中心预计2017年全国小麦中后期病虫害总体呈重发态势,发生程度重于常年,赤霉病大流行风险高,条锈病和穗期蚜虫分别呈偏重和大发生态势。预计发生面积为9.9亿亩次,其中,病害发生5.2亿亩次,虫害发生4.7亿亩次。一、主要病害赤霉病:呈大流行态势,接近上年,重于常年,流行面积约1亿亩,需预防面积约2亿亩次。其中,江汉和江淮麦
Based on a comprehensive analysis of pest occurrence base, wheat variety distribution and farming system, combined with future weather trends, the National Agricultural Technology Extension Service Center estimates that the overall pest and disease occurrence and development in mid-and late-stage wheat in 2017 will be in a re-emergence trend, , The risk of pandemic pandemic is high, and the stripe rust and aphids of panicle are respectively heavy and big. The estimated area is 990 million mu, of which 522 million mu are disease occurrences and 470 million mu are pests. First, the main disease scab disease: a pandemic, close to the previous year, heavier than perennial, epidemic area of about 1 million mu, need to prevent an area of about 200 million mu times. Among them, Jianghan and Jianghuai Mai