抄録
Field and laboratory experiments were conducted to assess the validity of the theoretical model; At=1-exp (-α·NA·L·P), where At is the percentage of rice hills infected with rice dwarf virus (RDV), α is the number of hills infected successfully by a vector per day, NA is the total number of adults per hill that have immigrated, L is the mean longevity of the adults in the rice field and P is the percentage of infective individuals. The calculated value obtained by substituting observed values for the parameters in the model showed close agreement with the observed value for At. Management of RDV infection in rice fields based on the relationship between the proportion of infected hills (At) and the product of parameters (α·NA·L·P) is also discussed.
