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首页> 外文期刊>Communications in Soil Science and Plant Analysis >Influence of FGD gypsum on the properties of a highly erodible soil under conservation tillage.
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Influence of FGD gypsum on the properties of a highly erodible soil under conservation tillage.

机译：FGD石膏对保护耕作中高度易蚀土壤性质的影响。

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Surface application of agricultural lime and fertilizers in no-till (NT) systems can be inadequate because of the excess time required for slowly soluble lime to improve soil aggregation such that water and nutrients move more rapidly into and down the soil profile. This study used fluidized gas desulfurization (FGD) gypsum as an alternative to lime because of its greater solubility and calcium (Ca) and sulfur (S) contents. Gypsum was applied to NT cotton (Gossypium hirsutum L.) plots at rates of 0, 2.24, 4.48, and 6.72 Mg ha-1 for 3 years. After 1 year, Ca, S, and soil aggregation increased significantly (P<=0.05) while exchangeable aluminum (Al) activities were reduced. These results indicate that FGD gypsum can increase NT cotton yields by increasing infiltration and soil water contents, reducing runoff, ameliorating exchangeable Al problems, and by providing a readily available source of S, a limiting nutrient in many cotton soils.
机译：由于缓慢可溶性石灰所需的时间过量，可以不充分（NT）系统的农业石灰和肥料的表面施加不足，以改善土壤聚集，使水和营养物质更快地进入和沿着土壤剖面。 该研究利用流化的气体脱硫（FGD）石膏作为石灰的替代物，因为其溶解度和钙（Ca）和硫（S）含量较多。 以0,2.24,4.48和6.72mg HA -1 / sup> 3持续3年，将石膏施加到NT棉（令人毛骨utum L.）图。 1年后，Ca，S和土壤聚集在显着增加（P <= 0.05），而可交换铝（Al）活性降低。 这些结果表明，FGD石膏可以通过增加渗透和土壤水分，减少径流，改善可更换的AL问题，以及提供众多棉花土壤中的可获得的营养素来增加NT棉产率。

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