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Phosphorus Leaching Risk Assessment with Manure Fertilizer Application in South China

文献类型： 外文期刊

作者： Ding, Xiaodong 1 ; Wei, Changbin 2 ; Wang, Rongping 1 ; Liao, Xinrong 1 ; Li, Shuyi 1 ;

作者机构： 1.Guangdong Inst Ecoenvironm & Soil Sci, Guangzhou 510650, Guangdong, Peoples R China

2.Chinese Acad Trop Agr Sci, South Subtrop Crop Res Inst, Key Lab Trop Fruit Biol, Minist Agr, Zhanjiang 524091, Guangdong, Peoples R China

关键词： Soil layer;Phosphorus saturation degree (PSD);Total phosphorus (TP);Water dissolved phosphorus (WDP)

期刊名称：BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY （ 影响因子：2.151； 五年影响因子：2.129 ）

ISSN： 0007-4861

年卷期： 2014 年 93 卷 1 期

页码：

收录情况： SCI

摘要： To investigate the phosphorus (P) leaching risk caused by applying manure fertilizer, six different manure fertilizers, namely, 0 (CK), 3,000 (F200), 4,500 (F300), 7,500 (F500), 10,500 (F700), and 15,000 kg ha(-2) (F1000), were applied to the surface soil (0-20 cm) prior to vegetable planting. The maximum Olsen P decreased with increasing amounts of the manure fertilizer. Total P did not change with treatments below 7,500, but decreased in the higher manure treatments. Water dissolved P (WDP) was highest in the upper (0-20 cm soil) layer, intermediate in the middle (20-40 cm soil) layer, and lowest in the lower (40-60 cm soil) layer. The 7,500, 10,500, and 15,000 treatments increased the WDPs in both the middle and lower soil layers and enhanced the degree of P saturation in the lower layer. This indicates that vertical leachate movement of P accumulation in the middle soil layer may be underestimated and the P leaching risk is enhanced using manure fertilizer levels > 7,500 kg ha(-2).

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