| 农业废弃物对黑土有机磷形态长期动态影响 |
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| 引用本文： | 李蕴慧,吴景贵,赵欣宇,王 维,陈 旭.农业废弃物对黑土有机磷形态长期动态影响[J].水土保持学报,2017,31(1):260-264. |
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| 作者姓名： | 李蕴慧 吴景贵 赵欣宇 王 维 陈 旭 |
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| 作者单位： | 吉林农业大学资源与环境学院,长春,130118 |
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| 基金项目： | 国家科技支撑项目(2012BAD14B05;2013BAC09B01)，吉林省科技厅重大科技招标专项(20150203004NY) |
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| 摘 要： | 针对农业废弃物在土壤中腐解时间较长,探究增施不同种类农业废弃物对黑土土壤各形态有机磷影响的长期动态变化规律,开展5a盆栽试验并根据Bowman-Cole法测定有机磷形态。试验设置5个处理,分别为:增施猪粪、秸秆、树叶、菌渣和单施化肥。结果表明:与单施化肥相比,增施猪粪可大幅提高土壤活性有机磷(L-OP)含量,5a时仍显著高于单施化肥;增施秸秆和树叶分别于3a和2a后出现最高值。增施猪粪、秸秆和菌渣后土壤中等活性有机磷(ML-OP)含量显著增加;猪粪处理ML-OP含量逐年降低,其余处理逐年上升。增施农业废弃物均可显著增加土壤中稳态有机磷(MR-OP)含量,总体呈逐年降低趋势;增施秸秆5a内MR-OP含量始终最高。增施农业废弃物对土壤高稳性有机磷(HR-OP)含量的降低作用一般在2~3a后开始显现,5a后HR-OP含量均低于单施化肥。增施猪粪可大幅提高活性较强的有机磷形态且影响时间最长;增施秸秆和菌渣变化趋势相似,增施秸秆更趋向于增加L-OP和MR-OP含量,增施菌渣更趋向于增加HR-OP含量;增施树叶降低HR-OP含量能力最强,但对其余有机磷形态影响较小。施用农业废弃物均可不同程度活化稳定态有机磷,单施化肥处理促使中稳态有机磷向高稳态有机磷转化。
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| 关 键 词： | 农业废弃物 黑土 有机磷 有机磷形态 |
Dynamic Changes of Organic Phosphorus Forms Applied Different Agricultural Waste Materials in Black Soil |
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| LI Yunhui,WU Jinggui,Zhao Xinyu,WANG Wei,CHEN Xu.Dynamic Changes of Organic Phosphorus Forms Applied Different Agricultural Waste Materials in Black Soil[J].Journal of Soil and Water Conservation,2017,31(1):260-264. |
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| Authors: | LI Yunhui WU Jinggui Zhao Xinyu WANG Wei CHEN Xu |
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| Institution: | College of Resources and Environment Sciences, Jilin Agricultural University, Changchun 130118 |
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| Abstract: | Decomposition of agriculture waste materials in the soil needed a long time. In this paper, a five years pot experiment combined Bowman-Cole sequential extraction to determine organic phosphorous fractionation with application four kinds of agricultural waste materials to explore the long-term dynamic change law of the forms of organic phosphorus in black soil. The treatments included pig manure (PM), maize straw (MS), leaf manure (LM), mushroom dreg (MD) and chemical fertilizer only (NPK). The results showed that compared with applying chemical fertilizer only, concentration of organic P (L-OP) of PM treatment was significantly higher and continually reduced in 5 years, concentration of MS and LM treatments achieved the highest levels after 3 years, 2 years respectively. Application of pig manure, maize straw and mushroom dreg increased concentration of soil moderately labile organic P (ML-OP). The concentration of ML-OP continue decreased in 5 years after application of pig manure, while other treatments increased. The concentration of soil moderately resistant organic P (MR-OP) significantly increased but decreased year by year after applying agricultural waste materials, including straw treatment which was always higher than the rest. Soil highly resistant organic P (HR-OP) began to decrease from 2 years~3 years after application of agricultural waste materials. Applied pig manure significantly improved the active organic phosphorus forms for long time, ?leaves could decrease the content of HR-OP and fewer influence on the rest of the forms, maize straw and mushroom dreg had the similar trends, maize straw tended to increase the L-OP and MR-OP but mushroom dreg tended to increase the HR-OP content. Application agricultural waste materials could activate steady-state organic phosphorus in different extents. But apply chemical fertilizer only promoted MR-OP transform into HR-OP. |
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| Keywords: | agricultural waste material black soil organic phosphorus organic phosphorus form |
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