种植密度、氮肥施用量和土壤深度对无性系茶树土壤养分含量的影响

茶叶科学 Pub Date : 2016-04-07 DOI:10.5376/JTSR.2016.06.0007

K. Sitienei, Kiplangat Kirui, D. Kamau, J. Wanyoko, K. Langat

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引用次数: 4

摘要

1990年开始的植物密度试验表明，无性系茶叶产量随植物种群密度(ppd)的降低而显著增加，最高的ppd产量显著低于其他所有的ppd。然而，当茶还年轻时，这种效果正好相反。因此，尚不清楚同样的效应是否适用于营养成分。在肯尼亚凯里科研究了AHP S15/10克隆茶树的种植密度和氮肥施用量对土壤含量的影响。所有试验田均采集土壤样品。用ICPE光谱分析了样品中宏、微量元素的含量。结果表明，植物密度对土壤养分含量无显著影响。氮肥施用量和土壤深度对土壤肥力有显著影响。不同施氮量下，土壤各元素在剖面4个深度表现出相似的营养格局。然而，不同的植物密度，其分布格局有所不同。磷含量在最高ppd时最少。

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Effect of Plant Density, Nitrogen Fertilizer Application Rates and Soil Depth on Clonal Tea Soil Nutrient Content

Trial on plant density which started in 1990 has revealed that in clonal tea, yield significantly increased with decrease in plant population density (ppd), with the highest ppd showing significantly lower yield than all the other ppd. However, this effect was opposite when the tea was young. It is not therefore known whether the same effect applies to nutrients content. This study was carried out to determine the effect of plant density of AHP S15/10 clonal tea plants and rates of nitrogenous fertilizer applied on soil content in Kericho, Kenya. Soil samples were collected from all the experimental plots. The samples were analyzed for their contents of macro and micro elements by ICPE spectroscopy. The results showed that plant density had no significant effect on the soil nutrients content. Nitrogen fertilizer application rates and depths of soil showed significant effects. Every element in the soils showed similar nutritional pattern for different nitrogen application rates across the four depths of the profile. However, the pattern was different for different plant density. Phosphorus content was least in the highest ppd.

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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.