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本研究利用开顶式熏气罩进行模拟试验。供试作物为大豆和花生各一组，每组各设４个处理：ＣＯ＿２３４０ｍｇ／Ｌ（无罩对照）；ＣＯ＿２３４０ｍｇ／Ｌ（有罩对照）；ＣＯ＿２５１７ｍｇ／Ｌ；ＣＯ＿２６０７ｍｇ／Ｌ。试验结果表明：大豆和花牛的生长和产量是随着二氧化碳浓度的增加而提高，当大气中二氧化碳浓度为６０７ｍｇ／Ｌ时，大豆和花生的产量分别比无罩对照增加１８．６％和２５．５％；用聚乙烯塑料薄膜罩，可使罩内日平均温度提高２．８℃左右，从而使大豆和花生籽粒产量比无罩对照降低２６％，预计下世纪中期若大气中二氧化碳浓度升到６００ｍｇ／Ｌ左右，近地面层温度上升３℃左右，这对大豆、花生等Ｃ＿３植物的增产效果极为显著。
In this study, open top smoked hood was used to simulate the experiment. The test crops were one group of soybean and peanut, each with 4 treatments: CO_2340mg / L (no cover control); CO_2340mg / L (covered control); CO_2517mg / L; CO_2607mg / L. The results showed that the growth and yield of soybean and calf increased with the increase of carbon dioxide concentration. When the carbon dioxide concentration in the atmosphere was 607 mg / L, the yield of soybean and peanut increased by 18.6% and 25% respectively .5%; polyethylene plastic film cover, can cover the daily average temperature increased by about 2.8 ℃, so that the soybean and peanut grain yield 26% lower than the control without a mask, is expected in the mid-century if the atmospheric concentration of carbon dioxide To 600mg / L or so, the temperature of near-surface layer increased by about 3 ℃, which is very significant for the yield increase of C_3 plants such as soybean and peanut.