长期施肥下黄壤无机磷组分空间分布特征

doi:10.7668/hbnxb.2016.03.031

华北农学报 ›› 2016, Vol. 31 ›› Issue (3): 212-217. doi: 10.7668/hbnxb.2016.03.031

所属专题： 土壤肥料；

长期施肥下黄壤无机磷组分空间分布特征

张邦喜^1,2,4, 李渝^1,2, 秦松^1,2, 李国学⁴, 蒋太明^2,3

1. 贵州省土壤肥料研究所, 贵州贵阳 550006;
2. 农业部(贵州)耕地保育与农业环境科学观测实验站, 贵州贵阳 550006;
3. 贵州省农业科学院, 贵州贵阳 550006;
4. 中国农业大学资源与环境学院, 北京 100193

收稿日期:2016-03-15 出版日期:2016-06-28
通讯作者: 蒋太明(1964-),男,贵州遵义人,研究员,博士,主要从事土壤与环境资源可持续方面研究。
作者简介:张邦喜(1984-),男,贵州盘县人,助理研究员,博士,主要从事农业资源与环境保护研究。
基金资助:
贵州省联合基金项目(黔科合J字LKN[2013]21号)

The Characteristic of Spatial Distribution on Inorganic Phosphorus Fractions Accumulation and Migration in Yellow Soil under Long-term Fertilization

ZHANG Bangxi^1,2,4, LI Yu^1,2, QIN Song^1,2, LI Guoxue⁴, JIANG Taiming^2,3

1. Guizhou Institute of Soil and Fertilizer, Guiyang 550006, China;
2. Scientific Observing and Experimental Station of Arable Land Conservation and Agriculture Environment (Guizhou), Ministry of Agriculture, Guiyang 550006, China;
3. Guizhou Academy of Agricultural Sciences, Guiyang 550006, China;
4. College of Resource and Environmental Science, China Agricultural University, Beijing 100193, China

Received:2016-03-15 Published:2016-06-28

摘要/Abstract

摘要： 利用土壤无机磷分级方法,研究长期施肥对黄壤中不同组分磷累积、迁移的影响。结果表明,施肥土壤全磷、有效磷、无机磷的含量均较不施肥处理有明显增加,随土层深度的加深而显著减少,施肥主要增加了Ca₂-P、Ca₈-P、Fe-P、Al-P含量,而对Ca₁₀-P、O-P含量影响较小。Ca₂-P、Ca₈-P、Fe-P、Al-P、Ca₁₀-P、O-P以表聚为主,同一土层上表现为O-P> Fe-P> Al-P、Ca₁₀-P> Ca₂-P> Ca₈-P。不同形态的无机磷含量随土层深度呈现垂直分布规律,在0~100cm土层中无机磷形态以O-P、Fe-P为主,且该比例随土层深度的增加而增加。因此,从长远来看,有机无机配施促使无机磷组分在土壤剖面的移动得以放缓,还不足以影响到地下水质量,更有利于黄壤区农业的可持续发展。

关键词: 黄壤, 长期施肥, 无机磷组分, 分布特征

Abstract: The objective of this study was to explore the accumulation and migration of soil available phosphorus,total phosphorus and inorganic phosphorus using different fertilizer.The data were collected in twenty years long-term fertilization experiment in upland yellow soil of Guizhou Province.Analytical methods was based on soil inorganic phosphorus fractions.Results indicated that compared with the control treatments (unfertilized),soil available phosphorus,total phosphorus and inorganic phosphorus fractions in M (organic fertilization),NPK (nitrogen phosphorus and potassium fertilization) and NPKM (organic and inorganic fertilizers mixed) treatment were all increased significantly.The highest concentration of available phosphorus,total phosphorus and inorganic phosphorus were obtained in the topsoil,and decreased gradually with the increase of soil depth.Fertilization mainly increased the concentration of Ca₂-P,Ca₈-P,Fe-P and Al-P,while the changes of Ca₁₀-P,O-P were slightly.The order of concentrations was O-P> Fe-P> Al-P、Ca₁₀-P> Ca₂-P> Ca₈-P.The concentrations of Ca₂-P was the lowest but with the highest nutrient availability while the concentrations of O-P was highest with the lowest nutrient availability.The regularities of distribution in inorganic phosphorus were vertical distribution and surface gathering.The main concentrations of inorganic phosphorus were O-P,Fe-P in 0-100 cm soil,and the proportion increased with depth of soil.Therefore,organic and inorganic fertilizers combine for application decrease the transportation of norganic phosphorus contents in vertical direction,and not affect the groundwater quality,which could benefit to the sustainable agricultural development of yellow soil areas in the long term.

Key words: Yellow soil, Long-term fertilization, Inorganic phosphorus fraction, Spatial distribution

中图分类号:

S143.2

张邦喜, 李渝, 秦松, 李国学, 蒋太明. 长期施肥下黄壤无机磷组分空间分布特征[J]. 华北农学报, 2016, 31(3): 212-217. doi: 10.7668/hbnxb.2016.03.031.

ZHANG Bangxi, LI Yu, QIN Song, LI Guoxue, JIANG Taiming. The Characteristic of Spatial Distribution on Inorganic Phosphorus Fractions Accumulation and Migration in Yellow Soil under Long-term Fertilization[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2016, 31(3): 212-217. doi: 10.7668/hbnxb.2016.03.031.

http://www.hbnxb.net/CN/Y2016/V31/I3/212

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长期施肥下黄壤无机磷组分空间分布特征

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