Control Effect of Tomato and Maize Intercropping against Tomato Powdery Mildew

[Objective]The paper was to discuss the control effect of tomato and maize intercropping against tomato powdery mildew.[Method]Three tomato varieties (6629,Jin’aihong and Yuxing) and two maize varieties were selected as materials,and control effects of maize and tomato intercropping against tomato powdery mildew were studied in the paper.[Result]Tomato and maize intercropping had obvious control effect against tomato powdery mildew.The relative control effect of 6629 was the highest (61.1%),followed by Jin’aihong (49.5%),and the control effect of Yuxing was the lowest (30.4%).[Conclusion]The study provides the theoretical basis for pollution-free production of tomato.