This paper forecasted the occurrence and epidemic dynamics of wheat sharp eyespot in Wujin by using the theories and methods of fuzzy cluster analysis from 1995～1996 Cluster indices with higher resolving power were selected and λ=0 6 was intercepted,then the epidemic dynamics of the disease could be divided into 3 types.

In accordance with field investigation to epidemic dynamics of wheat scab,the forecast method for differential equations of epidemic state has been given respectively.

The temporal epidemic curves and space epidemic curves of maize curvularia leaf spot (Curvularia lunata (Wakker) Boed) were protracted through systemically researched the temporal (seasons) epidemic dynamics and the space epidemic dynamics.

Occurrence degree and epidemic dynamics of powdery mildew on winter wheat varieties in Henan Province.;

The occurrence,damage and action threshold of Chinese rice grasshopper, Oxya chinensis,in rice field;

Studies on the occurrence and bionomics of Liriomyza sativae in Luoyang;

The population age was divided into five categories (young sub adult, adult Ⅰ,adult Ⅱand elder),according to the body weight and reproductive characters The control countermeasures has been put forward based on the occurrence rule and prevention technique in recent years.

Analysis of population dynamics and trends of future outbreaks of the Oriental migratory locust in Hebei;

Occurence and population dynamics and control indics of Apodemus agrarius in nonglutions rice rigion were studiesin spring and autumn in 1992～1994.