Studies on the nutritional characteristics of plants adapted to low pH soils.

适应低pH土壤的植物营养特性研究。

• 批准号: 07806009
• 负责人: OSAKI Mitsuru
• 金额: $ 1.34万
• 依托单位: HOKKAIDO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07806009/
• 关键词: Aluminum; Acid sulfate soil; Peat soil; Aluminum accumulator plant; Acid tolerance; アルミニウム耐性; 酸性土壌; 蛇紋岩土壌; 沖積土; 進化

To elucidate the nutritional characteristics of plants adapted to low pH soils, nutrients content in leaves was compared among plants grown in alluvial soil (Botanical garden of Hokkaido University), acid soil, and serpentine soil. Among macro nutrients in leaves, variation of N,P,and K content was small among soils, Ca content was lower in acid soil and serpentine soil than in alluvial soil, and Mg content was lower in acid soil, or higher in serpentine soil than in alluvial soil. Among micro nutrients in leaves, Fe and Mn content was lower and higher, respectively in acid soil and serpentine soil than in alluvial soil. It is expected that Al content will be high in acid soils, and will be low in high pH soil (serpentine soil), however Al content in leaves did not show the consistent tendency among soils, indicating that Al content reflect on the plant own characteristics, not on soil properties. As a results, N,P,K,Al nutrients in leaves are regulated by plant own nutritional charact … More eristics, on the other hand, Ca, Mg, Fe, and Mn nutrients in leaves are affected by soil nutrients.In Southern Peninsular Thailand, adverse soils such as ; acid sulfate, peat, sandy podozol, and saline soils are distributed. Melastoma malabathricum and Melaleuca cajuputi were dominant plants grown in low pH and peat soils. M.malabathricum accumulated the huge amount of aluminum (Al) in leaves, especially in new growing leaves, therefore, M.malabathricum is designated as Al accumulator plant. While, M.cajuputi did not accumulate Al in shoot, therefore, M.cajuputi is designated typically as Al excluder plant. Thus, M.Malabathricum and M.cajuputi adapt well to low pH soils, while they have a different strategy for Al. When low pH tolerant plants (especially M.malabathricum and M.cajuputi) were hydroponically cultivated in Al-P equilibrium system with 3 Al levels at pH4.0, these plants grew well by Al application, and could not absorbed phosphorous and nitrogen without Al, indicating that Al is important element for especially phosphorous adsorption in both Al accumulator plants and Al excluder plants. Less

为了阐明植物适应低pH土壤的营养特性，比较了生长在冲积土壤（北海道大学植物园）、酸性土壤和蛇形土壤中的植物叶片养分含量。在叶片宏观养分中，土壤中N、P、K含量变化较小，Ca含量在酸性土壤和蛇纹石土壤中低于冲积土，Mg含量在酸性土壤中低于冲积土，在蛇纹石土壤中高于冲积土。叶片微量养分中，酸性土壤和蛇纹石土壤的Fe和Mn含量分别低于冲积土和蛇纹石土壤。预计酸性土壤Al含量较高，高pH土壤（蛇纹石土）Al含量较低，但叶片Al含量在土壤中并没有表现出一致的趋势，说明Al含量反映的是植物自身特征，而不是土壤性质。结果表明，叶片中的N、P、K、Al等养分受植物自身营养特性的调控，另一方面，叶片中的Ca、Mg、Fe、Mn等养分受土壤养分影响。在泰国半岛南部，不利的土壤如；分布有酸性硫酸盐、泥炭、沙质灰土和盐碱土。在低pH和泥炭土壤中，优势植物为白千层和黑千层。malabathricum在叶片中积累了大量的铝（Al），特别是在新生叶片中，因此，malabathricum被指定为铝积累植物。而在茎部不积累Al，因此被认为是典型的Al排除植物。结果表明，耐低pH植物（特别是耐低pH植物和耐低pH植物）在pH为4.0、Al含量为3的Al平衡系统中水培时，Al的施用使其生长良好，且在没有Al的情况下不能吸收磷和氮。表明铝在铝富集植物和铝排斥植物中都是重要的吸附元素，特别是磷的吸附。少

项目成果

Osaki,M.: "Positive cffect of aluminum on growth of plants adaptcd to low pH soils." Soil Sci. Plant Nutr.43(in press). (1997)

Osaki,M.：“铝对适应低 pH 土壤的植物生长有积极影响。”

Watanabe, T., Osaki, M., and Tadano, T.: "Effect of Ca, Mg, and Si nutrient on Al accumulation and growth in Melastoma malabathricum, rice, and barley" Soil Sci.Plant Nutr. 43 (in press). (1997)

Watanabe, T.、Osaki, M. 和 Tadano, T.：“钙、镁和硅养分对野牡丹、水稻和大麦中铝积累和生长的影响”土壤科学。植物营养。

Watanabe,T.: "Effect of Ca, Mg, and Si nutrient on Al accumulation and growth in Melastoma malabathricum. rice, and barley." Soil Sci. Plant Nutr.43(in press). (1997)

Watanabe,T.：“钙、镁和硅营养物对野牡丹、水稻和大麦中铝积累和生长的影响。”

Watanabe, T.: "Effect of Ca, Mg, and Si nutrient on Al accumulation and growth in Melastoma malabathricum, rice, and barlcy." Soil Sci. Plant Nutr.43(in press). (1997)

Watanabe, T.：“钙、镁和硅营养物对野牡丹、水稻和大麦中铝积累和生长的影响。”

Osaki, M., Watanabe, T., and Tadano, T.: "Positive effect of aluminum on growth of plants adapted to low pH soils" Soil Sci.Plant Nutr. 43 (in press). (1997)

Osaki, M.、Watanabe, T. 和 Tadano, T.：“铝对适应低 pH 土壤的植物生长的积极影响”土壤科学.植物营养。