农作物病虫测报工作是主动及时控制病虫为害,保证农业增产的主要手段。 近几年,我们整理了1974—1984年沙湾小麦锈病流行年份的历史资料(表1),应用综合相关法,对小麦锈病发病程度进行定性定量分析,建立了回归预测方程式,解决了小麦锈病中期预报的问题。 一、预测依据和回归预测式 Crop pest reporting is a major initiative to take the initiative to control pests and diseases in a timely manner to ensure that agricultural production increases. In recent years, we have compiled the historical data of the epidemic years of wheat rust in Shawan from 1974 to 1984 (Table 1), and applied the comprehensive correlation method to qualitatively and quantitatively analyze the incidence of wheat rust. We established the regression prediction equation to solve the problem of wheat rust Medium-term forecast problem. First, the forecast basis and regression prediction