Abstract: In order to discuss the effect of film mulching on greenhouse environment and cucumber growth, an experiment was conducted to study the effect of different film mulching methods (only ridges mulched method, ridges mulched and gullies paved rice husk method and ridges and gullies fully mulched method) on air temperature, air moisture, soil temperature and CO₂ concentration and cucumber growth, quality in plastic covered tunnel greenhouse in autumn with the experiment material of European short cucumber. The results showed that the method of ridges mulched and gullies paved rice husk decreased soil temperature about 1℃ on high temperature day in September, and increased air moisture a little, which could induce cucumber downy mildew. The greenhouse of ridges and gullies fully mulched method had higher air temperature and soil temperature. Air moisture of the cultivation method decreased by 4.9% and CO₂ concentration increased about 34% comparing with that of the control, which were beneficial to cucumber growth and the decrease of downy mildew. These favorable factors increased the yield of cucumber and the contents of vitamin C, soluble protein and free amino acids of cucumber fruit. Therefore, using the method of ridges mulched and gullies paved rice husk could decrease the soil temperature in hot season, which was beneficial to seedling recovering. In late autumn season, using the method of ridges and gullies fully mulched was the simple and effective cultivation measure to increase yield and income.