短语词组短语boll -rot 烂铃cotton phytophthora boll rot 棉铃疫病boll rot index 烂铃指数cotton boll rot 棉铃红腐病boll rot of cotton 棉铃红腐病cotton diplodia boll rot 棉黑果病boll rot disease 红腐病Cotton Boll Rot Diseases 棉铃病害 返回 boll rot