Effects of Malic Acid/Malate on Phosphorus Availability of Dark Brown Forest Soils and Absorption of Forest Seedlings

SONG Jin-feng; SONG Jun-jie; CHU Yong-lei; WANG Yong; CUI Xiao-yang; PENG Hong-mei

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Effects of Malic Acid/Malate on Phosphorus Availability of Dark Brown Forest Soils and Absorption of Forest Seedlings

更新时间：2024-11-07

- Effects of Malic Acid/Malate on Phosphorus Availability of Dark Brown Forest Soils and Absorption of Forest Seedlings
- Vol. 25, Issue 5, (2011)
- 作者机构：
  
  东北林业大学
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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SONG Jin-feng, SONG Jun-jie, CHU Yong-lei, et al. Effects of Malic Acid/Malate on Phosphorus Availability of Dark Brown Forest Soils and Absorption of Forest Seedlings[J]. 2011, 25(5).
DOI：

SONG Jin-feng, SONG Jun-jie, CHU Yong-lei, et al. Effects of Malic Acid/Malate on Phosphorus Availability of Dark Brown Forest Soils and Absorption of Forest Seedlings[J]. 2011, 25(5). DOI：

摘要

模拟森林凋落物淋洗液中苹果酸/盐浓度范围

研究不同浓度苹果酸/盐对风干暗棕壤中磷有效性的影响及机制

同时采用盆栽试验

在自然暗棕壤中对苹果酸/盐提高磷的有效性进行验证

并探讨苹果酸/盐对落叶松和水曲柳幼苗吸收运输磷素养分的影响。结果表明:苹果酸/盐溶液显著促进A1层和B层风干暗棕壤磷的活化

释放量随浓度增加而增大

但B层释放效应较弱。对A1层和B层风干暗棕壤磷的释放作用苹果酸盐强于同浓度的苹果酸

因此推断

苹果酸/盐促进暗棕壤磷释放的主要机理在于苹果酸阴离子反应。苹果酸/盐对暗棕壤磷的释放具有累加性

土壤磷释放量主要由苹果酸阴离子累积载荷量决定

以苹果酸盐加入时

磷释放量Y与苹果酸阴离子累积载荷量X间回归方程为:Y=-0.0005 X2+0.1929 X+1.8192

R2=0.959 3

初步估算森林凋落物层溶出的苹果酸/盐对暗棕壤A1层的磷释放量为3.04kg/(hm2.a)

约相当于当地中龄林年吸收磷量的1/4～1/3。自然暗棕壤中的添加试验也证实

合适浓度苹果酸/盐对提高暗棕壤中磷的有效性具有积极作用。苹果酸/盐还促进落叶松和水曲柳幼苗对磷的吸收运输

以1.0mmol/L或5.0mmol/L浓度时影响...

Abstract

By simulating malic acid/malate contents in forest litter leachates

the effects and mechanism of different concentrations of malic acid/malate solutions on phosphorus(P) availability of air-dry dark brown forest soils were studied.By pot experiments

the role of malic acid/malate solutions on solublizing P were validated in natural dark brown forest soils

and the effects of malic acid/malate on P absorption of Larix olgensis and Fraxinus mandshurica seedlings were also discussed.The results showed that

malic...

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