烟草连作区
continual planting area of tobacco
大豆连作障碍
Soybean monocropping barriers
连作障碍
continuous cropping problem
Continuous cropping barrier
replant problem
Continuous cropping obstacle
Replant obstacle
Continuous cropping obstacles
Succession cropping obstacle
Barrier to continuous cropping
obstacles of continuous cropping
Barrier of continuous cropping
continuous cropping’s obstacle
Obstacle of continuous mono-cropping
Succession monocropping obstacles
cropping cropping
Replant diseases
continuous cropping
replant disease
Continouse cropping stress
Factors affecting growing
土壤连作障碍
Continuous cropping obstacles
环境烟草烟
environmental tobacco smoke
环境烟草烟气
environmental tobacco smoke
环境烟草烟雾
environmental tobacco smoke
烟草烟污染
tobacco smoke pollution
Tabacco smoke pollution
Tobacco smoking pollution
烟草作业环境
Tobacco processing environment