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首页> 外文期刊>Canadian Journal of Soil Science >Soil test phosphorus changes and phosphorus runoff losses in incubated soils treated with livestock manures and synthetic fertilizer
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Soil test phosphorus changes and phosphorus runoff losses in incubated soils treated with livestock manures and synthetic fertilizer

机译：用家畜粪便和合成肥料处理的温育土壤的土壤测试磷变化和磷径流损失

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Kumaragamage, D., Flaten, D., Akinremi, O. O., Sawka, C. and Zvomuya, F. 2011. Soil test phosphorus changes and phosphorus runoff losses in incubated soils treated with livestock manures and synthetic fertilizer. Can. J. Soil Sci. 91: 375- 384. Source of phosphorus (P) and soil properties influence changes in soil test P (STP) concentrations and P runoff losses in manured and fertilized soils. We compared STP changes and P runoff losses in two soils, a clay loam and a sand, that were either unamended (control), or amended with liquid swine manure (LSM), solid cattle manure (SCM), or monoammonium phosphate (MAP) and incubated for 6 wk. Soil subsamples after incubation were analyzed for STP using Olsen (OP), Modified Kelowna (KP), Mehlich 3 (M3P) and water extraction (WEP) methods. We collected runoff from incubated soils for 60 min under a rainfall simulator, and analyzed for dissolved reactive P (DRP). Magnitude of STP increase in amended soils was greater in sand (19-48%) than in clay loam (7-37%). Increases in STP and DRP runoff concentrations in amended soils generally followed the order; MAP > LSM > SCM. Olsen P, KP and M3P were more accurate than WEP for predicting runoff DRP concentrations and loads, accounting for 43-49% of the variation in P concentrations for the first 30 min of runoff. Olsen P, the currently used SIP method for environmental P regulation in Manitoba is sufficiently robust to predict runoff P losses from manure and fertilizer amended soils.
机译：D. Kumaragamage，D。Flaten，O。Akinremi，C。Sawka和F.Zvomuya。2011年。土壤测试磷的变化和用家畜粪便和合成肥料处理的温育土壤中的磷径流损失。能够。 J.土壤科学。 91：375-384。磷（P）的来源和土壤特性会影响土壤试验P（STP）浓度和施肥和施肥土壤中P径流损失的变化。我们比较了未改良（对照）或用液态猪粪（LSM），固态牛粪（SCM）或磷酸一铵（MAP）修正的两种土壤（粘土壤土和沙子）的STP变化和P径流损失。并孵育6周。使用Olsen（OP），改良的Kelowna（KP），Mehlich 3（M3P）和水提取（WEP）方法分析孵育后的土壤子样品的STP。我们在降雨模拟器下从温育土壤中收集了60分钟的径流，并分析了其溶解态反应性P（DRP）。改良土壤中STP的增加幅度在砂土中（19-48％）大于黏土壤土（7-37％）。修正土壤中STP和DRP径流浓度的增加通常遵循该顺序。 MAP> LSM> SCM。 Olsen P，KP和M3P在预测径流DRP浓度和负荷方面比WEP更准确，占径流前30分钟P浓度变化的43-49％。 Olsen P是曼尼托巴省目前用于环境P调节的SIP方法，具有足够的鲁棒性，可以预测肥料和肥料改良土壤中的径流P损失。

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