Effect of Long-term Fertilization on Nutrients Distribution of Soil Profiles in Arid Highland of Loess Plateau

PENG Ling-fa; HAO Ming-de; LAI Lu; LI Li-xia

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Effect of Long-term Fertilization on Nutrients Distribution of Soil Profiles in Arid Highland of Loess Plateau

- Effect of Long-term Fertilization on Nutrients Distribution of Soil Profiles in Arid Highland of Loess Plateau
- Bulletin of Soiland Water Conservation Vol. 22, Issue 1, Pages: 36-38(2003)
- 作者机构：
  
  西北农林科技大学水土保持研究所, 陕西, 杨凌,712100
- 作者简介：
- 基金信息：
- DOI：
  CLC： F301.24
- Published：2003
- 稿件说明：
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PENG Ling-fa, HAO Ming-de, LAI Lu, et al. Effect of Long-term Fertilization on Nutrients Distribution of Soil Profiles in Arid Highland of Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2003, 22(1): 36-38.
DOI：

PENG Ling-fa, HAO Ming-de, LAI Lu, et al. Effect of Long-term Fertilization on Nutrients Distribution of Soil Profiles in Arid Highland of Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2003, 22(1): 36-38. DOI：

摘要

主要探讨了黄土塬区长期冬小麦连作施肥对土壤养分剖面分布的影响。结果表明

有机质、全氮和有效氮在土壤剖面中大致呈"S"型分布

而全磷在整个剖面呈抛物线型分布。不同处理耕层土壤养分差异较明显

耕层以下土壤养分变化与耕层基本趋势相一致。长期施肥对土壤60cm以上土层土壤养分影响较大

而对100cm以下土层土壤养分影响较小。单施化肥对土壤肥力影响不明显

有机肥与化肥配施对提高土壤肥力有较好的作用。

Abstract

The effect of long-term continuous fertilization to winter wheat field is mainly researched on the distribution of nutrients of soil profiles.The experiment results show that the profiles of organic matter

total nitrogen and available nitrogen are taken on the distribution of“S”shape but total phosphorus is in the form of parabola in soil profiles.The nutrient difference of the layers below to psoil is biggest under different treatments

even though the nutrients difference of the layers below topsoil is on the decrease

but their change tendency is the same as that of topsoil.Long-term fertilization mainly affects soil nutrients above 60cm soil layers

but affects soil nutrients a little below 100cm soil profiles.Only applying chemical fertilization does not evidently affect soil fertility

and applying organic manure and chemical fertilization plays aspecial role on improving soil fertility.

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