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酸性土壤种植作物常因铝毒害而减产，用煤燃烧副产品（ＣＣＢＰｓ）可以部分缓解酸土影响。在酸性（ｐＨ４．７）土体中，用１５ｃｍ的ＣＣＢＰｓ、石灰或两者混合物改良表土，设立（１）对照酸土；（２）３．９８ｇ／ｋｇ含镁石灰（Ｌｉｍｅ）；（３）１５．８８ｇ／ｋｇ膏石高烟道气体脱硫副产品（ＦＧＤ）；（４）３．９８＋１５．８８ｇ／ｋｇ的Ｌｉｍｅ与ＦＧＤ混合物；（５）１５．８８ｇ／ｋｇ含有６％左右Ｍｇ（ＯＨ）２的高石膏ＦＧＤ副产品（ＦＧＤ＋Ｍｇ）和（６）６．４５ｇ／ｋｇ流体化床燃烧副产品（ＦＢＣ）处理。小麦种在这些处理土体中３４ｄ不加水。生长在对照和ＦＧＤ处理上的植株地上部及根干物质（ＤＭ）以及叶面积最小，两者相似。ＦＢＣ、ＦＧＤ＋Ｍｇ、Ｌｉｍｅ及Ｌｉｍｅ＋ＦＧＤ处理植株的叶面积及ＤＭ值相近，并高于对照植株的１３～１７倍。总根长（ＲＬ）以ＦＢＣ处理植株最大，较ＦＧＤ植株高约６倍，而生长在其它处理上植株的ＲＬ约为ＦＢＣ植株的一半。特定ＲＬ值以ＦＧＤ处理植株最大。生长在Ｌｉｍｅ、Ｌｉｍｅ＋ＦＧＤ、ＦＧＤ＋Ｍｇ和ＦＢＣ处理上植株具有较高的叶光合效率、叶绿素含量和蒸发蒸腾值（ＥＴ），同时较对照和ＦＧＤ植株有较低的叶温。虽然ＦＧＤ植株?
Crops grown in acid soils often suffer from aluminum toxicity and yield cuts. Coal-burned by-products (CCBPs) can partially relieve acidity. Topsoil was modified with 15 cm of CCBPs, lime or a mixture of both in acidic (pH 4.7) soils to establish (1) control acid soil; (2) 3.98 g / kg Lime; (3) 15.88 g / kg gypsum high flue gas desulfurization by-product (FGD); (4) 3.98 + 15.88 g / kg mixture of Lime and FGD; Of high gypsum FGD by-products (FGD + Mg) and (6) 6.45 g / kg of fluidized bed combustion by-products (FBC). Wheat seeds in these treatment of soil 34d without water. Plant shoots and root dry matter (DM) grown on control and FGD treatments had the smallest leaf area, both of which were similar. The leaf area and DM value of FBC, FGD + Mg, Lime and Lime + FGD plants were similar and were 13-17 times higher than that of the control plants. The total root length (RL) of FBC plants was the largest, about 6 times higher than that of FGD plants, while the RL of plants grown on other treatments was about half that of FBC plants. Specific RL values were greatest for plants treated with FGD. The plants grown on Lime, Lime + FGD, FGD + Mg and FBC plants had higher leaf photosynthetic efficiency, chlorophyll content and evapotranspiration (ET), and had lower leaf temperature than the control and FGD plants. Although FGD plants?