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我县地处广东省东北部,全县除中部几个公社属丘陵外,其余皆是山区公社。山高水冷、露多雾大、日照少、土质砂、耕作水平不高,群众对病害知识了解较差。特定的地理位置和气候条件十分有利于稻瘟病的发生。以往在正常年景下,每年发生稻瘟面积占全县全年水稻插植面积的1.76—12.98％,损失稻谷8.21—37.43万斤。稻瘟的发生,山区重于丘
My county is located in the northeast of Guangdong Province, the county in addition to a few communes belong to the hills, the rest are mountain commune. High mountains and cold water, Lu foggy, less sunshine, soil sand, farming level is not high, poor understanding of the disease knowledge. Specific geographical location and climatic conditions are very conducive to the occurrence of rice blast. In the past in normal years, the annual occurrence of rice blast area accounted for 1.76-12.98% of the county’s annual planting area of rice, loss of 8.21-37.43 kg of rice. The occurrence of rice blast, mountain heavier than mound