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首页> 外文期刊>International journal of soil science >Translocation of soil enzyme activity by leachates from different agricultural drainage systems.
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Translocation of soil enzyme activity by leachates from different agricultural drainage systems.

机译：来自不同农业排水系统的渗滤液对土壤酶活性的转运。

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摘要

Three different agricultural drainage systems located in the Northeast German lowland i.e., a free drainage of a shallow aquifer, a submerged deep drainage of a shallow aquifer and a free deep drainage were studied in order to detect evidence for translocation of enzyme activities and bacteria in percolating leachates. The activity of fluorescein diacetate (FDA) hydrolase as a measure of over-all microbial activity in the leachates was two up to three orders of magnitude lower as compared to the respective soil substrates. Enzyme activities in the leachates were almost constant throughout the year, except for a significant increase of FDA activity and cellulase activity due to a discharge by preferential flow, detected in the shallow free drainage system. FDA hydrolase was significantly but weakly correlated with chemical properties (NH4N, DOC). The population density of culturable bacteria was rather low (50 up to 300 colony-forming units mL-1 drain water) coinciding with a mostly marginal translocation of soil enzyme activity by leachates from arable drainage systems.
机译：研究了位于德国东北低地的三种不同的农业排水系统，即浅层含水层的自由排水，浅层含水层的淹没深层排水和深层自由排水，以检测渗滤过程中酶活性和细菌迁移的证据。渗滤液。荧光素二乙酸酯（FDA）水解酶的活性（作为渗滤液中总体微生物活性的量度），与相应的土壤基质相比，降低了两个至三个数量级。除了由于在浅自由排水系统中检测到的优先流动导致的FDA活性和纤维素酶活性的显着增加外，沥滤液中的酶活性全年几乎保持不变。 FDA水解酶与化学特性（NH4N，DOC）显着相关但弱相关。可培养细菌的种群密度相当低（50至300个菌落形成单位mL-1排水），这与可耕作排水系统中渗滤液产生的土壤酶活性大部分处于边缘转移有关。

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