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当前位置: 首页 > 文章 > 高寒区不同农艺措施对燕麦人工草地各生育期土壤碳氮储量与碳氮比的影响 草地学报 2019 (3) 675-686
Position: Home > Articles > Effects of Different Agronomy Treatments on the Oat Cultivation Grassland Soil Carbon and Nitrogen Stock and the Carbon/nitrogen Ratio Acta Agrestia Sinica 2019 (3) 675-686

高寒区不同农艺措施对燕麦人工草地各生育期土壤碳氮储量与碳氮比的影响

作  者：
刘文辉;张永超;梁国玲;秦燕
单  位：
青海省青藏高原优良牧草种质资源利用省级重点实验室青海大学畜牧兽医科学院
关键词：
高寒区;燕麦人工草地;生育期;土壤碳氮储量;碳氮比
摘  要：
为研究燕麦(Avena sativa L.)品种、施肥和箭筈豌豆(Vicia sativa L.)混播比例对燕麦人工草地土壤碳、氮储量及碳氮比的影响,为青藏高原高寒地区燕麦人工草地固碳、固氮能力研究和生态评价提供理论依据,本试验采用三因素四水平正交试验设计[L_(16)(4~5)]研究了不同生育期土壤碳、氮储量和碳氮比变化特征。结果表明,随着生育期的推进,0～50cm和0～30cm土层土壤碳、氮储量均呈"先增后降"的变化规律,抽穗期最高;30～50cm土层呈持续增加的变化规律,乳熟期最高;牧草收获后一个月的土壤碳、氮储量均显著高于牧草生长季。施肥对0～50cm土层碳氮比(C/N)的影响显著。各土层平均C/N分别以青海甜燕麦、施有机肥和燕麦单播下最高。0～50cm土层C/N在抽穗期和乳熟期最高,分别为15.46和15.49;各土层C/N随土层的加深呈"先增后降"变化,以20～30cm土层的C/N最高,达19.14。
译  名：
Effects of Different Agronomy Treatments on the Oat Cultivation Grassland Soil Carbon and Nitrogen Stock and the Carbon/nitrogen Ratio
作  者：
LIU Wen-hui;ZHANG Yong-chao;LIANG Guo-ling;QIN Yan;Key Laboratory of Superior Forage Germplasm in the Qinghai-Tibetan Plateau,Qinghai Academy of Animal Science and Veterinary Medicine;
单  位：
LIU Wen-hui%ZHANG Yong-chao%LIANG Guo-ling%QIN Yan%Key Laboratory of Superior Forage Germplasm in the Qinghai-Tibetan Plateau,Qinghai Academy of Animal Science and Veterinary Medicine
关键词：
Alpine area;;Oats cultivation grassland;;Growth period;;Soil carbon and nitrogen stock;;C/N
摘  要：
We investigated the effects of different agronomy treatments on the oat cultivation grassland soil carbon and nitrogen stock dynamic and the carbon/nitrogen ratio,to provide a theoretical basis for the study of carbon and nitrogen stock and ecological evaluation of oat cultivation grassland in the alpine region of Qinghai-Tibet plateau.We carried out orthogonality test[L_(16)(4~5)]to analyse the carbon and nitrogen stock dynamic and C/N ratio among the growth period of different soil layers.As the results shown,both of the carbon and nitrogen stock at the 0～50 cm and 0～30 cm soil layers increased and decreased during the growth period and got the peak value at the heading period;the carbon and nitrogen stock in the 30～50 cm increased during the growth period and got the peak value at milk period.After the harvest,the soil carbon and nitrogen stock were higher than the growth period.Fertilizer played the main role in the carbon and nitrogen stock compared with the other agronomy measures.The C/N ratio was higher under the A.sativacv.Qinghai,organic fertilizer addition and monoculture oat.The C/N ratio of0～50 cm soil layer increased beginning,and decreased at the middle growth period,and increased under of the growth period,got the peak value at the heading and milk period(15.46 and 15.49,respectively).The C/N ratio increased in the surface soil layer but decreased at the deep soil layers,got the peak value at 20～30 cm soil layer(19.14).

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