[1]来璐,郝明德,彭令发.长期施肥对黄土高原旱地土壤无机磷空间分布的影响[J].水土保持研究,2003,10(01):76-77,126.
　LAI Lu,HAO Ming-De,Peng Ling-Fa.Effect of Long-term Fertilization on Profile Character istic of Soil Inorganic P on Loess Plateau Dryland[J].Research of Soil and Water Conservation,2003,10(01):76-77,126.
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长期施肥对黄土高原旱地土壤无机磷空间分布的影响

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 10 期数: 2003年01期 页码: 76-77,126 栏目: 出版日期: 1900-01-01
Title:
Effect of Long-term Fertilization on Profile Character istic of Soil Inorganic P on Loess Plateau Dryland
作者:
来璐1,2, 郝明德1, 彭令发1,2
1. 中国科学院水利部水土保持研究所, 陕西杨陵 712100;
2. 西北农林科技大学资源环境学院, 陕西杨陵 712100
Author(s):
LAI Lu1,2, HAO Ming-De1, Peng Ling-Fa1,2
1. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, Shaanxi, China;
2. College of Resources and Environmental Sciences, Northwestern Sci-tech University of Agriculture and Forestry, Yangling 712100, Shaanxi, China
关键词:
长期施肥; 旱地; 无机磷; 空间分布
Keywords:
long term fertilization; soil P; profile characteristic
分类号:
S158.3
摘要:
长期施肥；旱地；无机磷；空间分布研究了18年肥料长期定位试验土壤无机磷的空间分布特征。土壤剖面无机磷占全磷总量的65.0%～79.4%，无机磷以Ca-P为主，Ca2-P、Ca8-P、Ca10-P分别占无机磷总量的2.1%～16.0%、0.6%～2.4%和59.7%～80.5%，Al-P、Fe-P、O-P分别占无机磷总量的1.8%～6.0%、3.9%～6.5%和9.2%～14.7%.土壤Ca2-P、Ca8-P、Al-P空间分布特征总趋势为耕层含量较高，耕层以下含量减少，在120cm土层以下趋于稳定。Ca10-P耕层有一定的积累，耕层以下含量减少，但底土含量略高于耕层。Fe-P、O-P空间分布不明显。长期施肥土壤中磷素大量以O-P累积在剖面各土层，其次主要转化为Ca2-P、Ca8-P和Al-P累积在耕层。
Abstract:
Study on profile character istic of fractions of inorganic P through 18 years long term experiment.The result showed the inorganic P accounted for 65.0%～79.4% of total P, Ca-P is the main fraction in inorganic P, Ca2-P, Ca8-P, Ca10-P accounted for 2.1%～16.0%, 0.6%～2.4% and 59.7%～80.5% of total inorganic P, Al-P, Fe-P, O-P accounted for 1.8%～6.0%, 3.9%～6.5% and 9.2%～14.7%.The content of Ca2-P, Ca8-P, Al-P in cultivation layer was higher than that in other layers, the variation became smaller beneath 120 cm layer, Ca10-P accumulated a little in cultivation layer and decreased underneath the 0～20 cm layer, Fe-P、O-P, had no significant profile characteristic.P accumulated with a great deal amount O-P in soil profile, and others mainly turned into Ca2-P, Ca8-P and Al-P accumulating in cultivation layer.

参考文献/References:

[1] 沈善敏.中国土壤肥力[M].北京:中国农业出版社, 1997.
[2] Bowman R A, Cole C A.An exploratory method for fraction of organic Phosphorus from grassland soil[J].Soil Sci., 1978, 125:95-101.
[3] Franzen D W, Hofman V L, Halvorson A D, et al.Sampling for site-specific farming:topography and nutrient considerations[J].Better Crop, 1996, 80(3):14-18.

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备注/Memo

收稿日期:2002-11-25
基金项目:中国科学院知识创新工程项目（KZCX2-413）；国家科技攻关项目（2001BA508B18）
作者简介:来璐（1973- ），女，陕西兴平人，硕士，主要从事土壤肥力与生态环境建设方面的研究。

更新日期/Last Update: 1900-01-01