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放牧苏尼特肉羊甲烷排放影响因素研究
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作者 赵青山 段俊杰 +3 位作者 那日苏 塔娜 王海 张晓庆 《家畜生态学报》 北大核心 2024年第11期56-60,共5页
试验研究了内蒙古苏尼特肉羊饲养管理方式、补饲料粗蛋白水平、放牧制度对羊只甲烷(CH_(4))排放的影响。结果表明:不同的饲养管理方式,对CH_(4)排放具有显著影响(P<0.05),排放浓度为放牧+补饲>舍饲苜蓿>天然放牧,浓度分别为0.... 试验研究了内蒙古苏尼特肉羊饲养管理方式、补饲料粗蛋白水平、放牧制度对羊只甲烷(CH_(4))排放的影响。结果表明:不同的饲养管理方式,对CH_(4)排放具有显著影响(P<0.05),排放浓度为放牧+补饲>舍饲苜蓿>天然放牧,浓度分别为0.32%、0.21%、0.18%;补饲料粗蛋白水平对羊只甲烷排放作用极显著(P<0.01),CH_(4)排放顺序为粗蛋白水平14%>17%>20%,浓度分别为0.36%、0.28%、0.24%;人工草地放牧条件下,采取划区轮牧,还是连续放牧,对苏尼特肉羊CH_(4)排放没有显著性(P>0.05)影响。畜牧生产者可参考选择适宜的管理方式、营养水平,保证生产并降低CH_(4)排放。 展开更多
关键词 甲烷排放因素 反刍家畜 苏尼特羊 喂饲方式 放牧制度
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Advances in Greenhouse Gases Emission in Farmland Soils 被引量:2
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作者 王璐 蒋跃林 《Agricultural Science & Technology》 CAS 2012年第8期1738-1743,共6页
[Objective] The aim was to overview the emission of greenhouse gases in farmland. [Method] Based on domestic and foreign references, production mechanism, discharging characters and major influential factors of CO2, C... [Objective] The aim was to overview the emission of greenhouse gases in farmland. [Method] Based on domestic and foreign references, production mechanism, discharging characters and major influential factors of CO2, CH4 and N2O in soils of farmland were overviewed. [Result] Production and discharge of CO2, CH. and N2O played an important role in circulation of carbon and nitrogen in terrestrial ecosystem and constituted a key method for carbon and nitrogen output. It is significant to conduct research on reduction of greenhouse gas and increase of absorption. [Conclusion] The research is beneficial for exploration on discharge rule and influential factors of greenhouse gases, providing theoretical references for reduction of greenhouse gases and study on climate change. 展开更多
关键词 Farmland soils Carbon dioxide METHANE Nitrous oxide Emission flux influential factors
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