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guizi2005新蟲 (初入文壇)
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[求助]
希望好心的人，幫我翻譯一下這段文字，畢業(yè)急發(fā)文章需要的摘要~~~小妹在這里跪謝 ！
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通過測定并分析不同種植年限(種植1a，3a，4a，5a及8a)人工苜蓿草地苜蓿葉片、莖稈及0~20cm土壤中C、N、P含量及其化學(xué)計量比，研究了種植年限對人工苜蓿草地土壤及植物養(yǎng)分含量及其化學(xué)計量比的影響。結(jié)果表明:1）0~20cm土壤C、N含量隨種植年限的增加，呈先增后減的趨勢，P含量與之相反，各年限間有顯著差異（P<0.05），土壤C∶N及C∶P呈現(xiàn)出“金字塔”分布模式。2）隨種植年限的增加，苜蓿葉片C含量總體呈下降趨勢，P含量呈先增后降趨勢，莖各養(yǎng)分的變化規(guī)律與土壤養(yǎng)分變化規(guī)律相似，變化幅度小于葉片養(yǎng)分。葉片與莖的C 及N的變化規(guī)律均與相應(yīng)P含量的變化一致。3）苜蓿葉片N：P及C：P與葉片P含量呈顯著負(fù)相關(guān)，與葉片N含量無顯著相關(guān)性，土壤P與莖的C、N、P及化學(xué)計量特征均有一定相關(guān)性。 |
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4樓2013-10-29 14:48:30
befair
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2樓2013-10-25 20:20:40
leilejiayou
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【答案】應(yīng)助回帖
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guizi2005: 金幣+10, 翻譯EPI+1, ★★★很有幫助, 謝謝啦~ 2013-11-04 14:52:54
guizi2005: 金幣+10, 翻譯EPI+1, ★★★很有幫助, 謝謝啦~ 2013-11-04 14:52:54
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By measuring and analyzing content and stoichiometry of C, N, P in different planting years (planting 1a, 3a, 4a, 5a and 8a) artificial on alfalfa grasslands alfalfa leaf, stem and 0 ~ 20cm soil , study the effect planting period caused for soil and plant nutrient content and their stoichiometric in ratioartificial alfalfa. The results show that: 1) in the 0 ~ 20cm soil content of C, N increased with the increase of planting years, increased first and then decreased, P content in contrast, owning significant difference between age (P <0.05), in soil C: N and C: P showing a "pyramid" distribution pattern. 2) With the increase of years of planting, alfalfa leaf content of C overall downward in trend, content of P increased first and then decreased, the variation of each nutrient of stem is similar to soil nutrient variation,and smaller than the nutrient variations of leaf . the C and N of leaves and stems with the corresponding variation of P content were consistent with the change. 3) in alfalfa leaf N: P and C: P were significantly negatively correlated with leaf P content , owning no significant correlation with leaf N content , soil P and the stems of C, N, P, and stoichiometry have a certain relevance. 非專業(yè)，僅供參考 |
3樓2013-10-29 13:36:34
octagonchem 
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5樓2013-10-29 17:07:53
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