用石灰华和其他常规磷肥改良过的对比土壤中养分的分布情况

IF 1.3 Q3 AGRONOMY
Tatum Simms, Kristofor R. Brye, Trenton L. Roberts, Lauren F. Greenlee
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引用次数: 0

摘要

磷(P)可以从废水中回收并用作替代肥料,即硬石膏[MgNH4PO4-6(H2O)]。然而,从废水中提取的磷和其他养分在土壤中的流动性还有待评估。本研究的目的是比较阿肯色州六种土壤(AR.L壤土[L]和淤泥质壤土[L])中由合成洗涤剂提取的电化学沉淀硬石膏(ECST)与化学沉淀硬石膏(CPST)、三聚磷酸钠(TSP)、磷酸一铵(MAP)和对照组提取的水溶性(WS)土壤磷和其他养分的垂直分布情况;壤土 [L] 和粉质壤土 [SiL])、密苏里州(MO;SiL 1 和 SiL 2)和内布拉斯加州(NE;砂质壤土 [SL] 和 SiL)的六种土壤中。对六种土壤和五种肥料-磷处理进行了柱浸出实验。在六种土壤中,有四种土壤的 0-3、3-6 和 6-10 厘米深处,两种硬石膏材料的水溶性(WS)磷一般没有差异(p > 0.05),与 MAP 的水溶性(WS)磷相似,但在顶部 6 厘米处,水溶性(WS)磷大于 TSP 的水溶性(WS)磷。MO-SiL 2 和 NE-SL 土壤中来自 CPST 的 WS P(分别为 6.6 和 12.7 mg kg-1)大于来自 ECST、MAP 和 TSP 的 WS P。在 AR-L 和 MO-SiL 1 土壤中,与其他肥料-磷源相比,TSP 是唯一一种在顶部 6 cm WS P 浓度增加的肥料-磷源。结果表明,ECST 衍生的 WS P 在顶部 10 厘米的土壤剖面分布相似,这表明 ECST 与其他常见肥料-磷来源一样,可在多种土壤质地中保护环境健康和渗滤液质量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Soil profile distribution of nutrients in contrasting soils amended with struvite and other conventional phosphorus fertilizers

Soil profile distribution of nutrients in contrasting soils amended with struvite and other conventional phosphorus fertilizers

Phosphorus (P) can be recovered from wastewater and used as an alternative fertilizer, namely, struvite [MgNH4PO4·6(H2O)]. However, the soil mobility of wastewater-derived P and other nutrients needs to be evaluated. The objective of this study was to compare the vertical distribution of water-soluble (WS) soil P and other nutrients from a synthetic-wastewater-derived electrochemically precipitated struvite (ECST) to that from a chemically precipitated struvite (CPST), triple superphosphate (TSP), monoammonium phosphate (MAP), and a control in six soils from Arkansas (AR; loam [L] and silt loam [SiL]), Missouri (MO; SiL 1 and SiL 2), and Nebraska (NE; sandy loam [SL] and SiL). A column-leaching experiment was conducted with the six soils and five fertilizer-P treatments. Water-soluble (WS) P from the two struvite materials generally did not differ (p > 0.05) and was similar to that of MAP in the depths of 0–3, 3–6, and 6–10 cm, but was greater than that of TSP in the top 6 cm in four of the six soils. WS P from CPST in the MO-SiL 2 and NE-SL soils (6.6 and 12.7 mg kg−1, respectively) was larger than that from ECST, MAP, and TSP. In the AR-L and MO-SiL 1 soils, TSP was the only fertilizer-P source that had increased WS P concentrations in the top 6 cm relative to the other fertilizer-P sources. Results showed that ECST-derived, WS P had similar soil profile distributions in the top 10 cm, suggesting that ECST will be equally protective of environmental health and leachate quality across multiple soil textures as other common fertilizer-P sources.

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来源期刊
Agrosystems, Geosciences & Environment
Agrosystems, Geosciences & Environment Agricultural and Biological Sciences-Agricultural and Biological Sciences (miscellaneous)
CiteScore
2.60
自引率
0.00%
发文量
80
审稿时长
24 weeks
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