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1973年以来,我们在稻瘟病历史发病区一从化县莲麻大队,开展以抗病品种为重点的稻瘟病综合防治试验。莲麻大队山高水冷,日照时数少,雾多露大,对稻瘟病菌的繁殖,孢子形成和侵入等都极为有利,1973年以前种植矮脚南特、广解9号以及珍珠矮等品种均不抗病,加上肥水管理不当、防治不及时等,发病较重。采取综合防治措施后,有效地控制了稻瘟病的发生,取得了用药少、产量高的显著效果。
Since 1973, we have conducted a comprehensive prevention and control experiment on rice blast focusing on disease-resistant varieties in Lianhua County Lvma Brigade in the historical area of blast disease. Linmai Battalion high water-cooled, less sunshine hours, fog and more exposed to Magnaporthe grisea breeding, sporulation and invasion are extremely beneficial, before 1973, planting dwarf Nantes, Guangmao 9 and pearl dwarf varieties All are not disease-resistant, coupled with improper management of fertilizer and water, prevention and treatment are not timely, the incidence is heavier. After taking comprehensive prevention and control measures, the occurrence of rice blast has been effectively controlled, and the remarkable effect of less medication and high yield has been achieved.