Abstract:

In order to effectively control wheat yellow mosaic disease at seedling stage and reduce the effect on wheat yield, the occurrence of wheat yellow mosaic disease was investigated in the field from 2018, and the regularity of occurrence of wheat yellow mosaic disease was analyzed systematically. From 2022 to 2023 year, three plots were selected to conduct pesticide control experiments at seedling stage, two sprays of 20% moroxydine hydrochloride WP 2250 g + 30% difluorophos WP 750 g + 0.01% brassinolide soluble solution 225 mL + 6% oligosaccharide·Chain protein WP 1200 g + 98% Monopotassium phosphate 2250 g + 750 g water soluble fertilizer containing amino acids were applied to wheat at rising stage, the area was 1333.4, 666.7, 666.7 m2 respectively, and the control was sprayed with water, the area was 1333.4, 666.7, 666.7 m2respectively. The results showed that spraying fungicide could reduce the severity of wheat yellow mosaic disease, and the average control effect was 29.6% and 42.46%, respectively, and the average plant height and fresh weight increased by 3.24 cm and 0.44 g, respectively, the average number of secondary roots per plant increased by 3.17. The yields of the three plots were 5657.85, 6777.12, 7868.37 kg/hm2, respectively, and those of the control were 4776.52, 5435.58, 7223.63 kg/hm2, respectively. The yields of the three plots were increased by 881.32, 1341.54, and 644.75 kg/hm2, respectively, the average yield increase was 955.87 kg and 17.35%. Spraying fungicide at the seedling stage of wheat can reduce the damage degree of the disease and achieve the effect of preventing disease, reducing damage and increasing yield of wheat.

Key words: Zaozhuang, wheat yellow mosaic disease, occurrence, investigation, spring, chemical control, research