| 紫外辐射增强对大豆-土壤系统温室气体排放的影响机理初探 |
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| 引用本文： | 尤明双,戴平风,廖秋香. 紫外辐射增强对大豆-土壤系统温室气体排放的影响机理初探[J]. 安徽农业科学, 2010, 38(7): 3590-3594 |
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| 作者姓名： | 尤明双 戴平风 廖秋香 |
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| 作者单位： | 1. 广西灵山县气象局,广西灵山,535400
2. 广西北海市涠洲岛气象站,广西北海,536004 |
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| 摘 要： | [目的]初步探讨紫外辐射增强与农田生态系统温室气体排放之间的关系。[方法]以豫豆19为材料,通过室外盆栽试验研究地表UV-B辐射增强20%对土壤-大豆系统温室气体排放的影响及其影响机理。[结果]在大豆营养生长期,UV-B辐射增强对土壤-大豆系统CO2和N2O的排放影响不显著;在大豆生殖生长期,UV-B辐射增强显著降低了土壤-大豆系统N2O和CO2的排放,降低了该系统的呼吸速率。UV-B辐射增强主要通过影响大豆的光合作用及N代谢过程影响土壤-大豆系统的温室气体排放,如降低大豆叶片叶绿素含量、改变其硝酸还原酶活性及硝态氮含量等。[结论]UV-B辐射增强对土壤-大豆系统温室气体排放和植物生长及其氮代谢过程等均有一定影响。
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| 关 键 词： | UV-B CO2 N2O |
Preliminary Study on Effect Mechanism of UV Enhancement on Greenhouse Gas Emission of Soybean-Soil System |
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| YOU Ming-shuang et al. Preliminary Study on Effect Mechanism of UV Enhancement on Greenhouse Gas Emission of Soybean-Soil System[J]. Journal of Anhui Agricultural Sciences, 2010, 38(7): 3590-3594 |
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| Authors: | YOU Ming-shuang et al |
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| Affiliation: | Lingshan Meteorological Bureau of Guangxi Province;Lingshan;Guangxi 535400 |
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| Abstract: | [Objective] The aim was to study the relationship between UV enhancement and greenhouse gas emission of farmland ecosystem.[Methods] With Yudou 19 as the material,the effect of surface UV-B enhancing 20% on greenhouse gas emission of soybean-soil system and its effect mechanism were studied through outdoor pot test.[Results] In vegetative growth stage of soybean,the effect of UV-B enhancement on emission of CO2 and N2O from soybean-soil system was not significant.While in reproductive growth stage of soybea... |
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| Keywords: | UV-B CO2 N2O |
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