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于1996年晚季，从移栽到收割水稻高产品种特三矮2号种植于高CO2浓度（xco2=600X10-6）与目前大气CO2浓度（xco2=350X10-6）的塑料大棚内.xco2浓度由自动监控系统调节控制在整个生育期内，地上部生物学产量在高xco2下显著增加抽穗前，绿叶面积在高CO2浓度下显著增加；但抽穗后，绿叶面积在高CO2浓度下下降更快高CO2浓度下，谷产量、结实率和千粒重增加，而穗数和每穗谷粒数下降蒸煮品质（包括直链淀粉含量，胶稠度和碱消值）不受CO2浓度影响；而营养品质（蛋白质与氨基酸含量）在高CO2浓度下显著下降.我们认为，为了获得水稻的最大生产力和保持米的营养品质，施氮的数量与时间在高CO2浓度下应该有所调整.
In late 1996, Techanzhan 2, a high-yielding variety from transplanting to harvesting rice, was planted in plastic greenhouse with high CO2 concentration (xco2 = 600X10-6) and current atmospheric CO2 concentration (xco2 = 350X10-6) Control by automatic monitoring system During the whole growth period, the shoot biomass increased significantly at high xco2. Before heading, the area of green leaf increased significantly under high CO2 concentration. After heading, however, the area of green leaf decreased more rapidly under high CO2 concentration Under high CO2 concentration, the grain yield, seed setting rate and 1000-grain weight increased, whereas the panicle number and grains per panicle decreased the cooking quality (including amylose content, gel consistency and alkali consumption) from CO2 concentration; while the nutritional quality Protein and amino acid content) were significantly decreased at high CO2 concentrations, and we believe that the amount and timing of nitrogen application should be adjusted at high CO2 concentrations in order to maximize rice productivity and maintain the nutritional quality of rice.