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试验选用当年新收获的稻谷，其水分为12．7％、13．9％和15．1％，在23℃和33℃的恒温室中，将7种不同浓度的CO2气体经减压调湿后通入粮堆。定期取样，测定稻谷的脂肪酸、水溶酸、还原糖、非还原糖、粘度、过氧化物酶和发芽率的变化。试验结果表明，CO2对15．1％水分的稻谷在33℃下储藏的脂肪酸、水溶酸的变化有影响。在本试验中三种水分的稻谷在CO2浓度98％以上，在两种温度下储藏都能够延缓过氧化物酶活性的降低。这些结果说明，CO2对稻谷有一定的保质作用。但对稻谷的还原糖、非还原糖、布拉班德粘度最高值和发芽率没有明显的影响。
The newly harvested paddy was selected for the experiment with moisture content of 12.7%, 13.9% and 15.1%. Seven different concentrations of CO2 gas were dehumidified under reduced pressure in a constant temperature room of 23 ° C and 33 ° C After the access to the food pile. Periodic sampling was performed to determine the changes of rice fatty acids, water-soluble acids, reducing sugars, non-reducing sugars, viscosity, peroxidase and germination rate. The results showed that CO2 had effects on the changes of fatty acids and water-soluble acids stored at 33 ℃ in 15.1% moisture paddy rice. In this experiment, rice with three kinds of moisture had CO2 concentration above 98%, and storage at both temperatures delayed the decrease of peroxidase activity. These results indicate that CO2 has certain shelf-life effect on rice. However, there was no obvious effect on the reducing sugars, non-reducing sugars, maximum Brabender viscosity and germination rate.