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为了从气象条件上预测小麦锈病流行强度,我们根据历年小麦锈病流行强度,进行了综合性气象评判,提出了各关键时段小麦锈病形成的主、次气象条件,建立了临夏地区小麦锈病流行强度指数数学模式。一、锈病流行强度与气象条件研究表明,临夏地区小麦锈病来源于甘肃陇东和陇南的冬麦区,但锈病孢子能否在临夏地区潜存、繁殖,几乎取决于当地气象条件。我们把锈病流行强度划分为三个指数:全州大面积流行为3,部分地区流行为2,局部地区轻度流行或无为1。用1959—1985年象资料进行相关普查。结果看出:小麦锈病流行强度指数与5、6月的降水量,降水日数和相对湿
In order to predict wheat epidemic intensity based on meteorological conditions, we conducted a comprehensive meteorological assessment according to the prevalence of wheat rust over the years and proposed the primary and secondary meteorological conditions for the formation of wheat rust in each critical period. The wheat epidemic intensity index Mathematical model. First, the intensity of rust epidemic and meteorological conditions Studies have shown that wheat rust in Linxia area from Gansu Longdong and Longnan winter wheat area, but the rust spores can survive in Linxia, reproduction, almost depends on the local weather conditions. We divided the intensity of the epidemic of rust into three indices: the state’s large-scale epidemic 3, the prevalence 2 in some areas, and the mild or non-observed 1 in some areas. Use 1959-1985 data as relevant census. The results showed that: the wheat rust epidemic intensity index and May and June precipitation, precipitation days and relative humidity