The cocoon spun in poor mounting conditions shows yellow and dark colour, tough hand feeling and weak elasticity, resulting in more dropped ends and lower reelability percentage during silk reeling.

• 在恶劣的上蔟环境中结成的蚕茧,茧色黄而深浓,茧层手触紧硬而弹性弱,缫丝时落绪多,解舒差。