Bioassay techniques for soil-nutrient availability

Bioassay techniques for soil-nutrient availability
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土壤养分有效性的生物测定技术

DOI:
10.1007/bf00599054
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发表时间:
1983
期刊:
Water, Air, and Soil Pollution
影响因子:
--
通讯作者:
J. Keenan
J. Keenan
中科院分区:
--
文献类型:
--
作者:
David A. Hegemann;J. Keenan

文献摘要

被引文献

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在富营养化控制方案中,有必要量化所有(藻类可用)磷输入,包括来自土壤和沉积物的磷输入。藻类可利用性与化学分析结果之间并不存在一一对应关系。本研究涉及实验室藻类测定的发展,以评估土壤磷作为藻类养分的有效性。魔羯座硒是一种可接受的试验生物。高压灭菌土壤样品不会导致藻类有效磷的一致,统计显着变化。最大限度的藻类有效磷是通过土壤和藻类的直接接触来实现的。使用新鲜无磷培养基进行多次孵育,可显著增加藻类的有效磷。
In eutrophication control programs, it is necessary to quantify all (algal available) P inputs including those derived from soil and sediment. A one-to-one correspondence between algal availability and the results of chemical analysis does not exist. This research concerned the development of laboratory algal assays for evaluating the availability of soil P as an algal nutrient.Selenastrum capricornutum is an acceptable test organism. Autoclaving soil samples does not result in a consistent, statistically significant change in algal available-P. Maximum algal available-P is achieved with direct contact between soil and algae. Multiple incubation using fresh P-free medium results in significant increases in algal available-P.