Distribution and Acid Injury of Non-allophanic Andisols.

非脲基安迪索的分布和酸损伤。

基本信息

批准号：
01560068
负责人：
SAIGUSA Masahiko
金额：
$ 1.34万
依托单位：
Tohoku University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1990
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01560068/
关键词：
Non-allophanic Andisol Andisol Soil Acidity Allophane Acid Injury Aluminum Toxicity Subsoil Acidity Exchange Acidity 土壌溶液テンションライシメ-タ-

项目摘要

Non-allophanic Andisol admitted as one of the subgroup in International Andisol classification ( ICOMAND ), has strong soil acidity and is thought to be a problem soil. Therefore, both distribution and acid injury of non-allophanic Andisol were examined in this study.1) Andisol was divided into allphanic and non-allophanic Andisols by the constituent of amorphous material and was studied their chemical, physical and mineralogical properties. Both Andisols showed some common unique properties such as high amount of active Al, high accumulation of humus, low bulk density etc. Non-allopghnic Andisol showed, however, very strong soil acidity, while allphanic Andisol showed weak one.2) The acid injury of non-allophanic Andisol was clarified to be Al3+ toxicity and the degree of Al3+ saturation, the amount of exchange Al3+ and exchange acidity y1 were more useful measure of A1 toxicity in the acid Andisols compared to the amount of soil solution Al3+. Among these measurement, the y1 is most simple and practical method and 6 of y1 is worth to 2me of KCl-Al3+ which is diagnostic value differentiating alic subgroup of ICOMAND.3) Both barley and sorghum grown in non-allophanic Andisol showed symptoms of Al-toxicity and the growth of these plants was much inferior to those in allophanic Andisol. This is attributed to insufficient uptake of nitrogen due to poor rooting in the acid subsoils of non-allophanic Andisol.4) The distribution map of allophanic and non-allophanic Andisols in Tohoku district was completed. According to this map, nonallophanic Andisol was located in high rainfall region, whereas allophanic Andisols was seen in relatively low rainfall region and/or regions abundant in mafic glass or pumis.

非水酸安迪土被国际安迪土分类（ ICOMAND ）承认为亚组之一，具有很强的土壤酸性，被认为是有问题的土壤。因此，本研究对非脲基安迪溶胶的分布和酸损伤进行了研究。1)安迪溶胶按非晶态物质的组成分为脲基安迪溶胶和非脲基安迪溶胶，并研究了它们的化学、物理和矿物学性质。两种Andisol都表现出一些共同的独特性质，如活性铝含量高、腐殖质积累量高、容重低等。然而，非异源性Andisol表现出很强的土壤酸性，而异源性Andisol表现出较弱的土壤酸性。 2）酸损伤澄清非脲基安迪索的毒性是Al3+毒性，并且Al3+饱和度、交换Al3+量和交换酸度y1是酸中A1毒性更有用的衡量标准Andisols 与土壤溶液 Al3+ 量的比较。其中，y1 是最简单实用的方法，y1 中的 6 相当于 2me 的 KCl-Al3+，具有区分 ICOMAND 的 alic 亚群的诊断价值。 3) 在非水铝酸 Andisol 中生长的大麦和高粱均表现出 Al 症状。 -这些植物的毒性和生长远低于水英安迪索中的植物。这是由于非水英酸安迪土在酸性底土中生根不良，导致氮吸收不足。4)完成了东北地区水英酸和非水英安迪土的分布图。根据该地图，非水铝酸安迪溶胶位于高降雨量地区，而水铝英酸安迪溶胶则出现在降雨量相对较低的地区和/或富含镁铁质玻璃或钇石的地区。