disease cycle造句

• Abstract : this review briefly introduced the progress and trends of chestnut blight research , including the occurrence and damage of chestnut blight , symptom , pathogen and its hypovirulence , host range , disease cycle , and control , etc
  文摘:全面综述了栗疫病的研究进展，包括栗疫病的发生和为害性、症状、病原菌及其弱毒力、寄主植物、病害循环、发病条件和防治等方面所取得的成就和发展趋势，并就某些问题提出作者的观点。