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首页> 外文期刊>Agriculture, Ecosystems & Environment: An International Journal for Scientific Research on the Relationship of Agriculture and Food Production to the Biosphere >Nutrient losses in field-scale surface runoff from claypan soil receiving turkey litter and fertilizer
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Nutrient losses in field-scale surface runoff from claypan soil receiving turkey litter and fertilizer

机译：接受火鸡凋落物和肥料的粘土盘土壤在田间尺度地表径流中的养分流失

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Information is lacking on nutrient runoff losses from poultry wastes and commercial fertilizers from claypan soils such as those found in southeastern Kansas. The objectives of this study were: (i) to compare field-scale surface runoff losses of nutrients from turkey (Melleagris gallopavo) litter manure and fertilizer and (ii) to compare the influence of tillage incorporation of turkey litter with no tillage on nutrient losses in surface runoff. The experiment was conducted from 2005 through spring 2008 near Girard, KS. The soil was a low-slope Parsons silt loam overlying a claypan B horizon. A high litter rate (N-based) resulted in high flow-weighted concentrations of N and Pin runoff, and also resulted in carry-over P losses. N losses were inorganic and organic, whereas P losses were mainly the soluble, ortho-P form partially influenced by low sediment losses. Nutrient losses from fertilizer-only applications were usually lower than from N-based and similar to P-based turkey litter applications. Incorporation appeared to reduce nutrient losses in runoff, but was not always significant. A high litter rate built up soil P levels, and annual P runoff losses appeared to accelerate when soil P values exceeded 30 mg kg(-1) in a 0-15 cm sample. (C) 2012 Elsevier B.V. All rights reserved.
机译：缺乏关于家禽粪便和黏土土壤（例如堪萨斯州东南部发现的土壤）的商业化肥造成的养分径流损失的信息。这项研究的目的是：（i）比较火鸡（Melleagris gallopavo）凋落肥料和肥料中养分的地表径流径流损失，以及（ii）比较不耕作的免耕火鸡废弃物对养分损失的影响。在地表径流中。该实验从2005年到2008年春季在堪萨斯州吉拉德附近进行。土壤是一块低坡度的帕森斯淤泥质壤土，覆盖在地平B层上。较高的凋落率（基于氮）导致氮和Pin径流的流量加权浓度较高，还导致残留的P损失。 N的损失是无机的和有机的，而P的损失主要是部分受低沉积物损失影响的可溶的邻P形式。纯肥料施用的养分损失通常低于氮肥施用的养分损失，与磷肥施用的火鸡垃圾相似。掺入似乎减少了径流中的养分流失，但并不总是很明显。较高的凋落物积聚土壤P水平，当0-15 cm样品中土壤P值超过30 mg kg（-1）时，年度P径流损失似乎会加速。 （C）2012 Elsevier B.V.保留所有权利。

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