种子包衣再浸种双重措施对水稻恶苗病的防治效果OA

In order to alleviate the aggravation of rice bakanae disease in some areas of Heilongjiang Province,the feasibility of seed coating+soaking double treatment applied to the prevention and control of rice bakanae disease was explored.In this study,5％Metalaxyl-M·fludioxonil·azoxystrobin FS and 62.5 g·L-1 Metalaxyl-M·fludioxonil FSC seeds were selected for seed coating,and then the seeds were soaked with cyanobacterium ester for field exploration experiments.The results showed that 5％Metalaxyl-M·fludioxonil·azoxystrobin FS or 62.5 g·L-1 Metalaxyl-M·fludioxonil FSC seed coating+25％Phenamacril SC double treatment for rice seedling emergence and growth safety can significantly enhance seedling quality,the average control effect onrice bakanae disease reached 98.47％to 100.00％,significantly higher than a single seed coating or single dip treatment,seed coating dip double treatment is an effective measure to improve the effect of rice bakanae.In production,Priority recommendation 5％Metalaxyl-M·fludioxonil·azoxystrobin FS 1 000 mL·(100 kg)-1 seed+25％Phenamacril SC 2 000 solution,Secondly recommendation 62.5 g·L-1Metalaxyl-M·fludioxonil FSC 400 mL·(100 kg)-1seed+25％Phenamacril SC 2 000 solution,5％Metalaxyl-M·fludioxonil·azoxystrobin FS 750 mL·(100 kg)-1 seed+25％Phenamacril SC 2 000 solution.It is recommended to increase the application dosage for susceptible varieties or infected seeds.