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棉蚜的种群消长是属于世代连续型的。常规的经验预报对未来种群动态很难作出比较准确的估计,数理统计预报因对因子要求严格,仍受到一定的局限。本文运用模糊(Fuzzy)综合评判法作预报,克服了上述缺陷,可提前10—15天报出,效果很好,历史拟合率93%.(一)资料的选用和处理用我站14年资料,以7月25—30日高峰期蚜量
Population decline of cotton aphid belongs to successive generations of generations. Conventional empirical prediction is difficult to make a more accurate estimation of future population dynamics. Mathematical statistical forecasting is still subject to certain limitations due to strict requirements on factors. In this paper, fuzzy comprehensive evaluation method is used for forecasting, overcoming the above shortcomings can be reported 10-15 days in advance, with good results, the history of fitting rate of 93%. (A) the selection and processing of data with my station for 14 years Data to the peak July 25-30 amount of aphids