全国农业技术推广服务中心日前发布了主要农作物病虫害发生趋势预报,今年全国小麦病虫害将中等偏重发生,目前小麦病虫害正由南向北陆续蔓延,北方麦区虫害重于病害,南方麦区病害重于虫害。棉铃虫等棉花害虫发生可能重于近两年,水稻病虫害可能轻于去年。此次病虫害测报的主要依据是虫害发生基数偏高,病害发病较轻;作物种 National Agricultural Technology Extension Service Center recently released major crop pests and diseases trend forecast, this year the national wheat pests and diseases will be moderately heavier, the current wheat pests and diseases are spreading from south to north, the northern wheat pests heavier than the disease, the southern wheat disease is heavier than the disease Pests. Cotton bollworm and other cotton pests may be heavier in recent years, rice pests and diseases may be lighter than last year. The main basis for the pest forecasting is the high incidence of pests, less disease incidence; crop species