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Distribution of Forms of Sulphur and Their Relationships with Soil Attributes in Tea Growing Soils under Different Agro-climatic Zones of Northeastern India
Distribution of Forms of Sulphur and Their Relationships with Soil Attributes in Tea Growing Soils under Different Agro-climatic Zones of Northeastern India
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摘要：
Distribution of different forms of sulphur(S)and carbon-nitrogen-sulphur relationships were studied in surface and subsurface soils of some tea growing areas of Northeastern India.The soils were strongly acidic in reaction(pH-4.0 to 5.5),low to very high in organic carbon(4 to 54 g kg^-1),with cation exchange capacity(8.8 to 19.2 cmol(p+)kg^-1)and base saturation(50 to 77%).Organic S mostly contributed to the total-sulphur(62 to 77%)followed by Non sulphate S(28.8 to 37.2%)and sulphate S(0.7 to 1.4%).Except sulphate S,other forms of sulphur showed significant positive correlation among themselves as well as with organic carbon and total nitrogen.The C:N,C:S,N:S and C:N:S ratio varied from 8.2 to 10.0,6.18 to 71.57,0.62 to 7.26 and 100:10.1:1.4 to 100:12.2:16.2 respectively.Wider C:N:S ratios in all the surface and sub-surface soils indicated that the major portion of nitrogen and sulphur in tea growing soils of Northeastern India is locked up in organic combination which might pose as a potential threat towards tea plantation if application of sulphur is continuously ignored.
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| 篇名 | Distribution of Forms of Sulphur and Their Relationships with Soil Attributes in Tea Growing Soils under Different Agro-climatic Zones of Northeastern India | ||
| 来源期刊 | NASS农业科学杂志 | 学科 | 农学 |
| 关键词 | Tea soils Sulphur forms C:N ratio C:S ratio N:S ratio C:N:S ratio | ||
| 年，卷（期） | 2019,（1） | 所属期刊栏目 | |
| 研究方向 | 页码范围 | 1-6 | |
| 页数 | 6页 | 分类号 | S15 |
| 字数 | 语种 | ||
| DOI | |||
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Tea
soils
Sulphur
forms
C:N
ratio
C:S
ratio
N:S
ratio
C:N:S
ratio
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NASS农业科学杂志
主办单位：
南洋科学院
出版周期：
半年刊
ISSN：
2661-3328
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出版地：
12 Eu Tong Sen Stree
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5
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