Volume 6,Issue 2,1958 Table of Contents
1958, 6(2):88-98.
Abstract:
Данные рентгеннграфического анализа, дифференциалъного термического анализа, емкости катионного обмена, способносси набухании иллита во всех тонкодисперснъх фракциях лёсса и лёссовидных почв Северо-Западного Китая.
Данные рентгеннграфического анализа, дифференциалъного термического анализа, емкости катионного обмена, способносси набухании иллита во всех тонкодисперснъх фракциях лёсса и лёссовидных почв Северо-Западного Китая.
1958, 6(2):99-107.
Abstract:
1.In the paddy soils derived from red earth, the amount of iron and manganese were the highest in illuvial horizon, but much lower in glei horizon. The degree of differentiation of iron and manganese in horizons increased with the degree of soil development. It was found that the tendency of differentiation of manganese was more distinct as compared with that of iron.2. The amount of manganese, which can be reduced by hydroquinone makes the major part of the total manganese content, in some cases, it reached up to 70/0 of the total manganese content, but the amount of iron, which can be reduced by hydroquinone, never exceed 0.5% of the total iron content;the amount of manganese, which could form complex with EDTA was also larger than that of iron. 3. Dry-wet interchanging treatment of soil decrease the amount of acid-soluble and easily reduciable iron and manganese in it greatly. This indicates that dehydration can reduce the a ctivity of it on and manganese. 4. On the basis of the experimental results, it is suggested by authors that manganese is more sensitive to the change of redox condition, and iron is more sensitive to the change of acid-basic condition. All those have certain signifi-carte in the movement and differentiation of iron and manganese in the profile of paddy soil. The degree of movement of iron and manganese could, in certain case, be used as an index of the development of paddy soil.
1.In the paddy soils derived from red earth, the amount of iron and manganese were the highest in illuvial horizon, but much lower in glei horizon. The degree of differentiation of iron and manganese in horizons increased with the degree of soil development. It was found that the tendency of differentiation of manganese was more distinct as compared with that of iron.2. The amount of manganese, which can be reduced by hydroquinone makes the major part of the total manganese content, in some cases, it reached up to 70/0 of the total manganese content, but the amount of iron, which can be reduced by hydroquinone, never exceed 0.5% of the total iron content;the amount of manganese, which could form complex with EDTA was also larger than that of iron. 3. Dry-wet interchanging treatment of soil decrease the amount of acid-soluble and easily reduciable iron and manganese in it greatly. This indicates that dehydration can reduce the a ctivity of it on and manganese. 4. On the basis of the experimental results, it is suggested by authors that manganese is more sensitive to the change of redox condition, and iron is more sensitive to the change of acid-basic condition. All those have certain signifi-carte in the movement and differentiation of iron and manganese in the profile of paddy soil. The degree of movement of iron and manganese could, in certain case, be used as an index of the development of paddy soil.
1958, 6(2):108-113.
Abstract:
俄国伟大的地理学家兼土壤学家、卓越的自然地带学说创始人В.В.道库恰耶夫教授把所有的天然土壤称为自然地理景观的镜子或焦点。他认为土壤是伺候因素和生物因素对母岩的综合作用的产物,并把土壤的各种性质同土壤形成过程的自然条件的变化直接地联系起来。大家知道,在В.В.道库恰耶夫的科学学说的基础上,产生和发展了现代发生土壤学用比较地理法来进行土壤的野外研究。
俄国伟大的地理学家兼土壤学家、卓越的自然地带学说创始人В.В.道库恰耶夫教授把所有的天然土壤称为自然地理景观的镜子或焦点。他认为土壤是伺候因素和生物因素对母岩的综合作用的产物,并把土壤的各种性质同土壤形成过程的自然条件的变化直接地联系起来。大家知道,在В.В.道库恰耶夫的科学学说的基础上,产生和发展了现代发生土壤学用比较地理法来进行土壤的野外研究。
1958, 6(2):114-122.
Abstract:
Приморские силънокислые засоленные почвы(подкисленные поля) являются своеобразными почвами в приморских районах пров.
Приморские силънокислые засоленные почвы(подкисленные поля) являются своеобразными почвами в приморских районах пров.
1958, 6(2):123-136.
Abstract:
The object of this work was an investigation of the relationship between soil moisture content and soil aeration in the structureless soils, and a theoretical consideration was proposed out:For a given moilture content，the water which enters the soil must not displace,the volume of air equal to that of the water which penetrates the soil, and the decrement of permeability of soil to air will not be found to bear a linear relation to the increment of the water content, however, the permeability also probably increases as the soil is wetted. All of this has been proved by the experiment. Furthermore, the results of the experiment showed that until the moisture content of the soil increased up to the level 33-45% the antipode of the moisture content and soil aeration in structureless soils then would be ture. It has been suggested that this could happen in the so-called ideal structureless soils (soil without non-capillary pore space) only. Under natural conditions, however, in author's opinion, the antipode of soil moisture content and soil aeration in structureless soils will not be so seriously as we generally had thought of.
The object of this work was an investigation of the relationship between soil moisture content and soil aeration in the structureless soils, and a theoretical consideration was proposed out:For a given moilture content，the water which enters the soil must not displace,the volume of air equal to that of the water which penetrates the soil, and the decrement of permeability of soil to air will not be found to bear a linear relation to the increment of the water content, however, the permeability also probably increases as the soil is wetted. All of this has been proved by the experiment. Furthermore, the results of the experiment showed that until the moisture content of the soil increased up to the level 33-45% the antipode of the moisture content and soil aeration in structureless soils then would be ture. It has been suggested that this could happen in the so-called ideal structureless soils (soil without non-capillary pore space) only. Under natural conditions, however, in author's opinion, the antipode of soil moisture content and soil aeration in structureless soils will not be so seriously as we generally had thought of.
1958, 6(2):137-144.
Abstract:
1. На северном схлоне Бэгэдошан вместе т увеличнием высоты над уровнсм моря генетические типы явно изменяются по такому порядку(сверху вниэ).
1. На северном схлоне Бэгэдошан вместе т увеличнием высоты над уровнсм моря генетические типы явно изменяются по такому порядку(сверху вниэ).
1958, 6(2):145-155.
Abstract:
1. Одним из ризосферных микроорганизмов риса являет. Чем к корню, тем относителъно болышое количество Azotobacter, которое зависет от различных периодов роста риса, и следовательно корневая системариса тесно влияет на жизнеятельностъ Azotobacter.
1. Одним из ризосферных микроорганизмов риса являет. Чем к корню, тем относителъно болышое количество Azotobacter, которое зависет от различных периодов роста риса, и следовательно корневая системариса тесно влияет на жизнеятельностъ Azotobacter.
