| 农业废弃物料还田对土壤团聚体及土壤C和N的影响 |
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| 引用本文： | 龙攀,高旺盛,隋鹏,严玲玲,陈源泉.农业废弃物料还田对土壤团聚体及土壤C和N的影响[J].中国农业大学学报,2014,19(5):107-118. |
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| 作者姓名： | 龙攀 高旺盛 隋鹏 严玲玲 陈源泉 |
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| 作者单位： | 中国农业大学 农学与生物技术学院/循环农业研究中心, 北京 100193;中国农业大学 农学与生物技术学院/循环农业研究中心, 北京 100193;中国农业大学 农学与生物技术学院/循环农业研究中心, 北京 100193;中国农业大学 农学与生物技术学院/循环农业研究中心, 北京 100193;中国农业大学 农学与生物技术学院/循环农业研究中心, 北京 100193 |
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| 基金项目： | 国家科技支撑计划循环农业工程项目(2011BAD16B15, 2012BAD14B03) |
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| 摘 要： | 为促进农业废弃物料的循环利用, 选用秸秆(CS)、猪粪(PM)、酒渣(WR)、沼渣(BR)和菌渣(MR)5种来源于不同系统的农业废弃物料进行等碳量还田, 外设单施无机肥(CF), 不施肥(CK)以及裸地(CF)3个处理。测定了土壤水稳性团聚体、大团聚体包裹的微团聚体、土壤总有机碳(TOC)、全N以及团聚体结合态有机碳、N含量, 以探讨农业有机废弃物料还田对土壤团聚体结构的稳定性以及土壤C、N的影响。与无机肥处理相比, 有机物料还田分别使土壤大团聚体(Ma:0.25~8 mm)、微团聚体(Mi:0.053~0.25 mm)以及大团聚体包裹的微团聚体(Mm:0.053~0.25 mm)含量平均增加34%、 8%和34%, 土壤团聚体平均重量直径(MWD)提高20%, 土壤TOC含量平均增加61%, 全N含量增加45%。其中以猪粪和酒渣最有利于团聚体以及土壤TOC、N含量的增加, 沼渣效果最差。总体上有机物料还田促进了团聚体的形成和稳定, 增加土壤TOC与N浓度, 提高了团聚体对TOC和N的保护。
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| 关 键 词： | 农业废弃物料 土壤团聚体 有机碳 全N |
| 收稿时间： | 2014/2/21 0:00:00 |
Effects of agricultural organic wastes incorporation on soil water-stable aggregates and C, N contents |
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| LONG Pan,GAO Wang-sheng,SUI Peng,YAN Ling-ling and CHEN Yuan-quan.Effects of agricultural organic wastes incorporation on soil water-stable aggregates and C, N contents[J].Journal of China Agricultural University,2014,19(5):107-118. |
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| Authors: | LONG Pan GAO Wang-sheng SUI Peng YAN Ling-ling and CHEN Yuan-quan |
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| Institution: | College of Agronomy and Biotechnology/Circular Agriculture Research Center, China Agricultural University, Beijing 100193, China;College of Agronomy and Biotechnology/Circular Agriculture Research Center, China Agricultural University, Beijing 100193, China;College of Agronomy and Biotechnology/Circular Agriculture Research Center, China Agricultural University, Beijing 100193, China;College of Agronomy and Biotechnology/Circular Agriculture Research Center, China Agricultural University, Beijing 100193, China;College of Agronomy and Biotechnology/Circular Agriculture Research Center, China Agricultural University, Beijing 100193, China |
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| Abstract: | Recycling use of agricultural organic wastes resources becomes a big challenging task.In this study, five organic wastes including crop straw (CS), pig manure (PM), wine residue(WR), biogas residue(BR) and mushroom residue (MR) were applied in a field test.Mineral fertilizer (CF), none input (CK) and fallow (FL) were used as controls. Soil water-stable aggregates, microaggregate inside macroaggregates (Mm:0.053-0.25 mm), total organic C(TOC) and N were all measured. The results showed that organic wastes enhanced soil macroaggregates (Ma:0.25-8 mm) by 34%, microaggregates (Mi:0.053-0.25 mm) by 8%, Mm by 34, and the mean weight diameter (MWD) by 20% on average compared with CF. The TOC and N were improved by 61% and 45% as well.The PM and WR of the organic wastes had better bu BR lowest impacts.As a whole, organic wastes'' incorporation promoted soil aggregation and stabilization, and enhanced TOC and N contents. |
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| Keywords: | agricultural organic wastes soil aggregates TOC total N |
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