Effect of interplanted and mixed crops of maize and soybean on pest and disease management in soybean

摘要

The effect of interplanted and mixed crops of maize and soybean on pest and disease management in soybean was studied in 1993-1995. The results showed that the occurrence of general pests and diseases of soybean in interplanted and mixed crop fields were less severe than in single seeding field. The reduced rate of major pests in interplanted and mixed crop fields was between 11.4%-81.4% and 20.9%-76.0%, respectively. The reduced rate of disease in interplanted and mixed crop fields was between 70%-100% and 56.7%-100% compared with monoculture of soybean, respectively. The increased rates of natural enemies of the former were between 13.0%-86.5%. The economic profits of two cultivation methods increased by 32.9% and 33.7%, respectively, compared with monoculture of soybean.