[Objective] To explore the mixture sowing effects and optimal mixture ratio of alfalfa and orchard grass. [Method] The alfalfa and orchard grass were sowed at d
Objective This study aimed to investigate the appropriate sowing dates of different millet varieties and analyzed the yield,agronomic traits and resistance of m
[Objective] To explore the characteristics of microbial aerosol pollution in different pig houses and provide theoretical foundation for risk assessment of micr