云南省的小春粮油作物(小麦、蚕豆、油菜)的蚜害十分严重。近年,蚜害发生面积达300—500余万亩,占总面积的30％左右,常年均有不同程度的蚜害损失,许多地方因蚜害而减产的田块屡见不鲜。因此,做好预测工作是指导生产防治的重要关键。 Aphids in Yunnan’s small spring grain crops (wheat, broad bean, and rape) are very serious. In recent years, pest damage occurred in an area of ​​300-500 million mu, accounting for about 30% of the total area, perennial have varying degrees of loss of aphid damage, many places due to pests and reduced production of plots are common. Therefore, to do a good job of forecasting is the key to guiding production prevention and control.