## 3 Results
### UAV Spraying Pesticides to Control Wheat Aphids  
The results of XD20 on 1 DAS of pesticides show that the control effects of regular dosages on wheat aphids are 54.19-84.52%. Subsequently, thiamethoxam 70 WG reveals the best control effect of 84.52%, while sulfoxaflor 22 SC stands second with a value of 68.92%. Meanwhile, the control effect of 30% reduction treatments ranges from 39.22% to 73.90%. And, except for thiamethoxam 70 WG, the control effects of the other 30% reduction application treatments remain below 60% (Figure 2a). In the continuation of presenting the values of the control effects, the control effects of common practice treatments of XD60 range from 62.40% to 75.63%. Comparatively,  
Figure 1: The effect of cropping pattern on wheat aphid population density. Figure 2: 1 DAS control effect of pesticides on wheat aphids fed on XD20 (**a**) and XD60 (**b**). Note: * represents the significant difference between regular dosage treatment and reduction dosage treatment. sultfoxaflor 22 SC shows the best efficiency of 75.63%; Acetamiprid 20 WP and imidalcoprid 70 WG also perform good control effects of 74.56% and 70.17% (Figure 2b). For the 3 DAS of pesticides to the target population, the control effects of regular dosage treatments in XD20 fields transposed from 44.67% to 81.39%. This verifies that sulfoxaflor 22 SC has the highest control effect of 81.39%, and thiamethoxam 70 WG has the second highest value of 78.60%. At the same time, sulfoxaflor 22 and thiamethoxam 70 WG show the highest efficiency of 30% reduction; the control effect of these two treatments is 69.44% and 67.34%, respectively (Figure 3a). The results compiled after investigating XD60 show that the figures, noted three days after the application of pesticides, for the effectiveness of conventional dosage treatments range from 62.27% to 86.08%. More specifically, the value of the control effect of imidalcoprid 70 WG and thiamethoxam-cyhalothrin 22 SC is relatively higher (80%), followed by thiamethoxam 70 WG, sulfoxaflor 22 SC, and pymetrozine 50 WG, which stay at higher than 72%. The efficacy of 30% reduction treatments ranges from 53.48% to 85.36%, among which thiamethoxam-cyhalothrin 20 SC has the best control effect with 85.36%, followed by imidalcoprid 70 WG with a value of 72.05% (Figure 3b). According to the results recorded seven days after the spraying process, the control effects of regular dosage treatments for XD20 species range from 46.73% to 85.55%, where sulfoxaflor 22 SC has the best efficiency of 85.55%, while thiamethoxam 70 WG shows a value of 73.15%. The control effects of 30% reduction dosage treatments range from 45.25% to 68.27%. The results also show that sulfoxaflor 22 SC and thiamethoxam 70 WG have relatively better efficacy with 68.27% and 63.42%, respectively, whereas the figures for the rest of the treatments are below 60%. The control effect of regular dosage treatments is higher than the control effect of the corresponding 30% reduction treatments, though there is no significant difference between them. However, the control effect of sulfoxaflor 22 SC regular dosage treatment is significantly higher than that of the 30% reduction dosage treatment (Figure 4a). Figure 3: 3 DAS control effect of pesticides on wheat aphids fed on XD20 (**a**) and XD60 (**b**). Note: * represents the significant difference between regular dosage treatment and reduction dosage treatment. In the study of the XD60 field, the efficacy of regular dosage treatments ranges from 77.90% to 95.64%, as calculated on 7 DAS. The results, in this context, indicate that the efficacy of sulfoxaflor 22 SC and imidacloprid 70 WG is relatively high, with 94.53% and 95.64%, respectively, followed by the effectiveness of sulfoxaflor 22 SC and thiamethoxamcyhalothrin 22 SC, with the values of 89.82% and 92.10%, respectively.