Abstract:

Wheat productivity is low in dryland farming systems, and seed dressing with chemicals can improve wheat growth quality and promote stable and increased yields. Using Zhengmai 618 as the test material, three groups of self-prepared formulation (A1), self-prepared formulation (A2), and difenoconazole fludioxonil thiamethoxam 27% FS (A3) were mixed with seeds and one group was not mixed with seeds in the dryland farming systems along the Huaihe River. The effects of these treatments on wheat growth and yield were studied. The results showed that compared with no dressing, A1 and A2 treatments resulted in darker green leaf color in wheat, while A3 treatment showed no significant difference, the length of the first internode at maturity increased by -12.3%, -6.2%, and 10.8% with A1, A2, and A3 treatments, respectively. Plant height increased by -1.6, -1.1, and 1.7 cm with A1, A2, and A3 treatments, respectively. At maturity, A1 significantly increased biomass, while A2 and A3 treatments showed no significant difference. In terms of final yield, A1, A2, and A3 treatments increased by 6.6%, 1.8%, and -2.8%, respectively. Seed dressing with chemicals can improve wheat productivity and ensure wheat production safety. Among the treatments, A1 treatment performed the best, showing strong seedling and yield increasing effects, making it suitable for applying in dryland farming systems along the Huaihe River.

Key words: wheat, dryland farming, seed dressing, strong seedling, yield