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稻瘟病又名稻热病,是世界性的重要稻病。同纹枯病、白叶枯病被列为水稻三大病害。稻瘟病为通过气流传播的流行病,在适温高湿,有雨、雾、露存在的条件下有利于发生。而阴雨连绵或时晴时雨,都有利于病情迅速扩展。基于此,采用广东省连平县2000-2011年的气象资料,从气候基本要素气温、降水等方面,对连平县的农业气候特征进行分析,揭示气候变化的发展趋势,并采用连平县2000-2011年的稻瘟病相关资料,分析了稻瘟病的发病趋势。针对未来气候变化对农业的可能影响,并结合连平县稻瘟病的发病情况,开展各气候因素与稻瘟病发病率的相关性分析,并初步讨论了其气候因素对稻瘟病发病的作用机制。为农户提供了双季稻生育期间的气候变化趋势,对预防稻瘟病发病提出合理建议,但由于影响稻瘟病发病的因素除了气象因素外,还有其他因素,包括人工施药、土壤属性及栽培因素等。故气候因素与稻瘟病发病率的相关性存在一定的缺陷,这有待于需要更详细的资料来诊断分析,同时还需要利用更精确的方法来进一步论证。
Rice blast, also known as rice fever, is a worldwide important rice disease. With the same blight, bacterial blight is listed as three diseases of rice. Rice blast is a epidemic that spreads through the air stream and is conducive to the presence of high temperature and humidity, rain, fog and dew. The rainy or sunny when the rain, are conducive to the rapid expansion of the disease. Based on this, using the meteorological data from 2000 to 2011 in Lianping County, Guangdong Province, this paper analyzed the climatic characteristics of agriculture in Lianping County from the aspects of temperature and precipitation of the basic climate, revealed the development trend of climate change, 2000-2011 rice blast disease-related information, analyzed the trend of blast disease. In view of the possible impact of future climate change on agriculture and the incidence of rice blast in Lianping County, the correlation between climatic factors and the incidence of rice blast was analyzed. The mechanism of climate factors on the occurrence of rice blast was also discussed. Which provided farmers with the trend of climate change during the growing season of double cropping rice and made reasonable suggestions on the prevention of the occurrence of blast disease. However, besides the meteorological factors, there are other factors that affect the occurrence of blast disease, including artificial application, soil properties and cultivation Factors such as. Therefore, the correlation between climatic factors and the incidence of rice blast has some defects. This needs to be diagnosed and analyzed in more detail. At the same time, we need to use more precise methods to further demonstrate.