Soil Fertility Survey in Western Usambara Mountains,Northern Tanzania

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Soil Fertility Survey in Western Usambara Mountains,Northern Tanzania

机译：坦桑尼亚北部乌桑巴拉山脉西部的土壤肥力调查

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Soil samples from thirty sites representing four agro-ecological zones in the Western Usambara Mountains (WUM)of the Lushoto District in northern Tanzania were collected and analyzed for different nutrients. The results suggested that the major soil fertility constraint was P deficiency. On the basis of critical levels established in other areas, 90%of the soils were ranked as P deficient. This was followed by N, which was ranked as inadequate in 73% of the sites.Magnesium, K, and Ca also appeared limiting with 67%, 53% and 50% of the soils falling below the established critical values, respectively. A few soils (10%) were also found to contain exchangeable Al. The metallic micronutrients (Cu, Fe,and Zn) were adequate in all soils. Two sites had excessive Mn that could lead to toxicity in crops, and one was Mn deficient.

机译：收集了代表坦桑尼亚北部卢肖托区西部乌桑巴拉山（WUM）四个农业生态区的三十个地点的土壤样品，并分析了不同的养分。结果表明，土壤肥力的主要限制因素是磷缺乏。根据其他地区确定的临界水平，将90％的土壤定为P缺乏。紧随其后的是N，在73％的站点中排名不足;镁，K和Ca也出现了限制，分别有67％，53％和50％的土壤低于确定的临界值。还发现一些土壤（10％）含有可交换的铝。在所有土壤中，金属微量元素（铜，铁和锌）均充足。有两个地点的锰含量过高，可能导致农作物中毒，其中一个地点的锰含量不足。

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《土壤圈（英文版）》 |2006年第2期|237-244|共8页
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Selian Agricultural Research Institute, P.O. Box 6024, Arusha Tanzania;

Faculty of Applied Science, Cape Peninsula University of Technology, Cape Town Campus, Keizersgracht, P. O. Box652, Cape Town 8000 South Africa;

Sokoine University of Agriculture, Soil Science Department, P.O. Box 3008, Morogoro Tanzania;

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收录信息中国科学引文数据库(CSCD);
原文格式 PDF
正文语种 chi
中图分类农业基础科学;
关键词
agro-ecological zone; P deficiency; soil fertility; Western Usambara Mountains;

机译：农业生态区;缺磷;土壤肥力;乌桑巴拉西部山区;

Soil Fertility Survey in Western Usambara Mountains,Northern Tanzania

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