为了评价生物质炭与盐酸配施对苏打盐渍土的改良效果,本研究将不同配比的生物质炭和盐酸混合,添加于苏打盐渍土中,通过室内培养实验,研究了不同生物质炭和盐酸混合处理对轻度、中度苏打盐渍化土壤的p H、电导率、容重、渗透系数影响,以...为了评价生物质炭与盐酸配施对苏打盐渍土的改良效果,本研究将不同配比的生物质炭和盐酸混合,添加于苏打盐渍土中,通过室内培养实验,研究了不同生物质炭和盐酸混合处理对轻度、中度苏打盐渍化土壤的p H、电导率、容重、渗透系数影响,以及所生长作物燕麦株高和干重等的影响。结果表明,2%生物质炭配合30 m L·kg-1的0.5N盐酸处理,使轻度苏打盐渍化土壤的p H降低到7.61,容重下降19.2%,渗透系数升高31.6%,燕麦株高增加6.3%,干重增加65.5%,改良效果与施用脱硫石膏的对照组无显著差异,可以作为轻度苏打盐渍化土壤的改良剂配方;5%生物质炭和10 m L·kg-1的0.5N盐酸组合处理,使中度苏打盐渍化土壤p H降低到8.06,容重下降19%,渗透系数从2×10-4cm·s-1升高到1.7×10-4cm·s-1,燕麦长势良好,可以有效改良中度苏打盐渍化土壤。表1,图12,参20。展开更多
Chemical analyses of water and soil samples from the region of Bao Tou, and chemical equilibrium calculations indicate a large amount of water-soluble fluorine accumulating in the surface soil, giving rise to ground w...Chemical analyses of water and soil samples from the region of Bao Tou, and chemical equilibrium calculations indicate a large amount of water-soluble fluorine accumulating in the surface soil, giving rise to ground water with high fluorine during the process of soda-salinizatiun. Thermodynamic calculations of ground water from the region of Bao Tou show: △GaCO3>△GC2F2 >△GCaSO4,, leading to the following sequence in respect to fluorine: CaCO3→CaF2→Ca8O4. But during the process of sodasalinization the sequence should be: CaSO4→NaF→ NaCl. Ground water saturated with fluorine is generally related to water-soluble fluorine-rich sediments of the Middle-Pleistonce series, the distribution of which is controlled by new tectonic movement on one hand,and controls the distribution of endemic fluorosis on the other hand.展开更多
文摘为了评价生物质炭与盐酸配施对苏打盐渍土的改良效果,本研究将不同配比的生物质炭和盐酸混合,添加于苏打盐渍土中,通过室内培养实验,研究了不同生物质炭和盐酸混合处理对轻度、中度苏打盐渍化土壤的p H、电导率、容重、渗透系数影响,以及所生长作物燕麦株高和干重等的影响。结果表明,2%生物质炭配合30 m L·kg-1的0.5N盐酸处理,使轻度苏打盐渍化土壤的p H降低到7.61,容重下降19.2%,渗透系数升高31.6%,燕麦株高增加6.3%,干重增加65.5%,改良效果与施用脱硫石膏的对照组无显著差异,可以作为轻度苏打盐渍化土壤的改良剂配方;5%生物质炭和10 m L·kg-1的0.5N盐酸组合处理,使中度苏打盐渍化土壤p H降低到8.06,容重下降19%,渗透系数从2×10-4cm·s-1升高到1.7×10-4cm·s-1,燕麦长势良好,可以有效改良中度苏打盐渍化土壤。表1,图12,参20。
文摘Chemical analyses of water and soil samples from the region of Bao Tou, and chemical equilibrium calculations indicate a large amount of water-soluble fluorine accumulating in the surface soil, giving rise to ground water with high fluorine during the process of soda-salinizatiun. Thermodynamic calculations of ground water from the region of Bao Tou show: △GaCO3>△GC2F2 >△GCaSO4,, leading to the following sequence in respect to fluorine: CaCO3→CaF2→Ca8O4. But during the process of sodasalinization the sequence should be: CaSO4→NaF→ NaCl. Ground water saturated with fluorine is generally related to water-soluble fluorine-rich sediments of the Middle-Pleistonce series, the distribution of which is controlled by new tectonic movement on one hand,and controls the distribution of endemic fluorosis on the other hand.
