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泥沙样品的英文

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"泥沙样品"怎么读用"泥沙样品"造句

英文翻译手机手机版

  • sampling sediment

例句与用法

  • In light of current using situation and drawing on the experience of many scholars researched methods and viewpoints , this thesis made com land , fallow land , orchard , grass land as experimental field in black soil region jlau , which carried out experiment by applying different amounts of n and p fertilization in corn field . by means of collecting the samples of rainfall runoff , erosion silt and surface layer soil before and after rainfall for one year nature precipitation in field , we study the effect of surface runoff on n and p nutrient and fertility degeneration . the results showed : ( l ) there are lots of factors which affect soil erosion and losses of n and p , in which rainfall and rainfall intensity were more important , while rainfall intensity is the most important meteorological phenomena factor
    针对当前黑土利用现状,本文借鉴众多学者的研究方法和观点,在吉林农大黑土区选择利用方式不同的玉米地、休闲地、果园、草地,在玉米区进行了不同数量的施肥,通过野外试验,采集一年自然降雨产流及泥沙样品,同时采集降雨前后的耕层土壤样品,研究了黑土区地表径流对氮磷养分特征及肥力退化的影响,结果表明:土壤侵蚀和氮磷的流失受诸多因素的影响,降雨量、降雨强度是重要因子,而降雨强度是影响农田地表径流养分流失的最重要的气象因子,特别是暴雨,暴雨径流中氮磷浓度较平时高得多;随作物生长,覆盖度逐渐增加以及不同利用方式下表现的覆盖度差异,氮磷流失都表现为显著的差异。
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