The host alterations of Aphis gossypii among different winter and summer host plants compared with the population characters were studied By the analyses of Weibull functions,life table and Gower distance,the populations on different summer host plants transplanted from three winter hosts presented that there were significant differences between Rose of Sharon and Pomegranate or Pomegranate and Chinese prickly ash As the transplantation among four summer hosts,there were significant differences betwee...