自90年代以来,麦蚜连年大发生,危害严重,一般减产10%左右,严重的地块甚至减产4成以上。麦蚜的防治以喷洒农药为主,几年来因长期连续使用氧化乐果、辛硫磷、久效磷、菊酯类农药,致使麦蚜已产生了明显的抗性,防治效果降低,成本增加。试验证明,用大功臣可湿性粉剂防治麦蚜效果好。 Since the 1990s, the wheat aphid has been afflicted in successive years with serious detrimental effects. Generally, the yield of wheat aphids is reduced by about 10%, and serious land plots are even cut by more than 40%. The prevention and treatment of wheat aphid dominated by spraying pesticides, the past few years due to long-term continuous use of omethoate, phoxim, monocrotophos, pyrethroid pesticides, resulting in wheat aphid has had significant resistance, control and reduce the effect of increased costs . Tests show that the use of WP-WP can prevent and cure wheat aphid good effect.