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旱地间作系统生产力形成和土壤有机碳稳定机制
学位论文
理学博士, 兰州: 兰州大学, 2023
Authors:
王伟
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Submit date:2023/11/15
旱地农业
dryland agriculture
间作系统
intercropping system
种间相互作用
interspecific interaction
生产力
productivity
碳周转
SOC turnover
地膜覆盖对土壤氮素矿化的影响
学位论文
硕士, 兰州: 兰州大学, 2017
Authors:
宋文元
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Submit date:2019/01/17
地膜覆盖
土壤水分
氮素矿化
土壤无机氮
地膜覆盖和秸秆还田对玉米地与土壤氮素转化相关的土壤酶活性影响研究
学位论文
硕士, 兰州: 兰州大学, 2016
Authors:
孔雪静
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Submit date:2019/01/17
氮素转化
秸秆还田
地膜覆盖
蛋白酶
脱氨酶
脱氢酶
脲酶
氮素添加对青藏高原高寒草甸植被和土壤氮素供应能力的影响
学位论文
硕士, 兰州: 兰州大学, 2015
Authors:
郭雅婧
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Submit date:2019/01/17
高寒草甸
氮素添加
群落
有机氮
氮素矿化潜力
氮素矿化速率