AVAILABLE SULPHUR STATUS OF DOOARS TEA SOILS

茶叶科学 Pub Date : 2006-01-01 DOI:10.20425/IJTS.V5I3AND4.4680

J. Ghosh, U. George, N. Barpujari

引用次数: 2

Abstract

Available sulphur was determined on 5077 soils from the tea growing areas of Dooars (North Bengal), received for routine soil testing between 2000-2003. Over 43% of the soils had more than the critical limit of 40 ppm available sulphur. A distinct geographical trend in sulphur availability was observed, with the four western sub-districts showing a greater frequency of high available sulphur than the three eastern sub-districts. As expected, increased organic carbon in the soils could be correlated by a quadratic equation to the available sulphur status. Three subdistricts, Chulsa, Binnaguri and Dalgaon did not show a high correlation between organic carbon and available sulphur. Surprisingly, a negative linear relationship could be observed between soil pH and available sulphur, in all but the Jainti sub-district. This may be compounded by a negative correlation between soil pH and organic carbon status, in all but the Binnaguri, Kalchini and Jainti sub-districts.

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门茶土壤有效硫状况

在2000-2003年期间接受的常规土壤测试中，对来自Dooars(北孟加拉)茶叶种植区的5077种土壤进行了有效硫测定。超过43%的土壤的有效硫含量超过了40 ppm的临界限值。硫的可用性在地理上有明显的趋势，西部四个分区的高可用性硫出现的频率高于东部三个分区。正如预期的那样，土壤中有机碳的增加可以通过二次方程与有效硫状态相关。丘尔沙、滨那里、达岗等3个街道的有机碳和有效硫的相关性不高。令人惊讶的是，土壤pH值和有效硫之间呈负线性关系，除了Jainti街道。除了Binnaguri、Kalchini和Jainti区外，土壤pH值和有机碳状况之间的负相关关系可能会加剧这种情况。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

茶叶科学

CiteScore

1.50

自引率

0.00%

发文量

2558

期刊介绍： The Journal of Tea Science was established in August 1964, approved by the Publicity Department, CCCPC. Its title was inscribed by Zhu De, the chairman of CCCPC. It was discontinued during the Cultural Revolution in 1966, and it was reissued in August 1984, approved by the State Scientific and Technological Commission.Academicians Chen Zongmao and Liu Zhonghuaof the Chinese Academy of Engineering served as the directors of the editorial board. The Journal of Tea Science is managed by the China Association for Science and Technology,sponsored by the China Tea Science Society and the Tea Research Institute of the Chinese Academy of Agricultural Sciences, and edited and published by the editorial office of the Journal of Tea Science. It is the only one of Chinese core journals in the field of tea science that is included in the core library of the Chinese Science Citation Database.Its Domestic Unified Serial Number is CN 33-1115/S, its International Standard Serial Number is ISSN 1000-369X and its International publication name code is CODEN-CHKEF4. At present, the Journal of Tea Science is a bimonthly publication, published in the middle of the month, with a book size of 16.