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本文选用1983～1987年影响油菜菌核病流行程度的诸因素:菌源、土壤肥力(N、P、K数量)山河状况,1～5月各月均温、降雨频率等,在全面考虑各因素的作用的原则下,采用乏晰表式运算并进行多层次综合判别,对历年资料进行检测,并对近年来油菜菌核病的流行程度进行预测,此种方法简便、预报准确,便于推广应用。采取的具体步骤为:首先给出发病因素的评语和隶属度,然后根据实践经验确定诸因素的权重,再根据评语表和多层次乏
In this paper, the factors affecting the prevalence of sclerotinia sclerotiorum from 1983 to 1987 were selected as follows: source of bacteria, soil fertility (number of N, P and K), mountain and river conditions, average monthly temperature from January to May, and rainfall frequency, Under the principle of the role of factors, the use of explicit expression calculation and multi-level comprehensive discrimination, the data over the years to test and rape sclerotiorum in recent years, the prevalence of the degree of prediction, this method is simple, accurate forecast, easy to promote application. Specific steps taken are: First, the author gives the comments and membership of the incidence of factors, and then based on practical experience to determine the weight of the various factors, and then based on the list of reviews and the lack of multi-level