Effect of Mirobial Complex Seed-coating Agent on Germination, Seedling Biological Traits and Yield of Maize

The effect of microbial complex seed-coating agent (MCSA) on germination rate, seedling growth, metabolites and economical yield was studied through indoor germination test, greenhouse pot and field cultures to understand the MCSA's role to play in maize production. The results showed that with the ratio 1:80 of seed-coating agent to maize seed, germination forces of the seed coated with the MCSAs, G2, Y2, G2+Y2 plus 2% tebuconazole SC(TSC) were 9.25%, 19.43% and 25.49% higher than those of one coated with TSC only and 8.22%, 18.30% and 24.30% higher than that of naked seeds. Their active index were 11.51%, 16.02% and 26.15% higher than TSC only and 25.49%, 30.57% and 41.97% higher than naked seeds; their seedling dry weights of above ground were 31.67%, 40.58% and 49.38% higher than TSC only and 41.67%, 49.28% and 56.79% higher than naked seeds; their maize yields were 2.09%, 7.32% and 10.83% higher than TSC only and 5.22%, 10.21% and 13.61% higher than naked seeds. The MCSAs increased the root activity, amylase and peroxidase activities and contents of soluble sugar and indole acetic acid significantly than TSC and naked seed treatments.