中国开放科研知识云: 检索

基于强化学习和价格动态的农业种植规划 学位论文
中国科学院自动化研究所: 中国科学院自动化研究所, 2022
作者: 樊梦涵

收藏 | 浏览/下载：19/0 | 提交时间：2022/06/13

种植规划基于代理模拟平行管理种植决策支持强化学习

冬绿肥轮作对黄河三角洲盐碱地土壤性状和后茬玉米生长的影响 学位论文
中国科学院烟台海岸带研究所: 中国科学院烟台海岸带研究所, 2022
作者: 石一鸣

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黄河三角洲，盐碱地，毛叶苕子，二月兰，腐解

耕作措施对旱农区农田土壤质量与碳排放的影响 期刊论文
中国土壤与肥料, 2022, 期号: 01, 页码: 122-130
作者: 沈吉成; 赵彩霞; 刘瑞娟; 叶发慧; 李亚鑫

收藏 | 浏览/下载：12/0 | 提交时间：2022/12/04

旱农区土壤质量土壤碳排放与碳平衡耕作措施秸秆还田

长期施肥对黄土丘陵坡地农田土壤质量和谷子产量的影响 期刊论文
干旱地区农业研究, 2021, 卷号: 39, 期号: 5, 页码: 76-83
作者: 高小峰; 闫本帅; 吴春晓; 王国梁

收藏 | 浏览/下载：33/0 | 提交时间：2022/02/24

长期定位施肥氮磷配施土壤质量土壤酶活性谷子产量

基于DNDC模型的土地利用和气候变化对土壤碳氮储量影响的模拟研究 学位论文
北京: 中国科学院生态环境研究中心, 2020
作者: 李守娟

收藏 | 浏览/下载：57/0 | 提交时间：2021/07/05

土地利用 Climate Change Soil Organic Carbon Total Nitrogen Soil Ecosystem Service 气候变化土壤有机碳总氮土壤生态服务 land Use

三峡库区农业生产方式改变及其对水土流失与面源污染影响-以万州区五桥河流域为例 学位论文
北京: 中国科学院大学, 2020
作者: 严坤

收藏 | 浏览/下载：4/0 | 提交时间：2021/01/18

三峡库区农业生产方式氮磷流失初期冲刷效应规模化经营

生物炭施用对紫色土旱坡地土壤氮流失形态及通量的影响 期刊论文
环境科学, 2020, 卷号: 41, 期号: 5, 页码: 2406-2415
作者: 王舒; 王子芳; 龙翼; 严冬春; 慈恩

收藏 | 浏览/下载：28/0 | 提交时间：2020/06/12

生物炭紫色土旱坡地氮形态氮流失通量

Comprehensive evaluation of agriculture labor productivity in Pidu Linpan Farming System in Chengdu urban fringe 期刊论文
Chinese Journal of Eco-Agriculture, 2020, 卷号: 28, 期号: 9, 页码: 1397
作者: Yang B(杨波); He L(何露); Min QW(闵庆文)

收藏 | 浏览/下载：6/0 | 提交时间：2021/03/16

Agriculture labor productivity Labor participation rate Labor intensity index Urbanization Urban fringe Pidu Linpan Farming System China Nationally Important Agricultural Heritage Systems (China-NIAHS) 农业劳动生产率劳动参与率劳动强度指数城镇化城市边缘区郫都林盘农耕文化系统中国重要农业文化遗产

YK3150E数控滚齿机床结构分析及误差补偿技术研究 学位论文
2019
作者: 张龙

收藏 | 浏览/下载：2/0 | 提交时间：2020/11/05

YK3150E数控滚齿机床有限元分析几何误差建模误差参数辨识误差补偿策略

基于高分辨质谱的土壤溶解性有机质化学多样性研究 学位论文
北京: 中国科学院生态环境研究中心, 2018
作者: 李晓明

收藏 | 浏览/下载：24/0 | 提交时间：2020/07/15

土壤溶解性有机质，化学多样性，微生物多样性，傅立叶变换离子回旋共振质谱 decreased WIth IncreasIng Iron ComplexIng Index. PAtterns In Molecular PrOfiles IndicAted Dom In Paddy Soils To Become More RecalcItrAnt At Higher Soil C/n rAtio And Higher Soil Ph. furTherMore, PlAnt-derived polyPh.nols And Pyrogenic Dom Were retaIned Favorably By Iron And The ChemodiversIty Of Dom In Paddy Soil Increased WIth IncreasIng Soil C/n rAtios. These Results Provide Novel InFormAtion regardIng Dom Characteristics At a Molecular Level And Will InForm Better Global MAnagement Of Soil Carbon In Paddy Soil EcosysteMs Global. 2) Through The applicAtion Of Ft-icr-Ms, The ChemodiversIty Of Dom In Soil Subjected To Long-term OrgAnic Carbon And InOrgAnic Fertilizer Amendments Was Established. In Parallel, Bcc Was Assessed. Through This Coupled Approach It Was Established.thAt sustaIned OrgAnic Carbon Amendment Resulted In: SignificAntly (p < 0.05) Increased Total Carbon And Total nItrogen Reservoirs In Soil, Dom PrOfiles Of greAter ChemodiversIty, And Emergence Of RecalcItrAnt Dom Moieties (H/c < 1.5). In Contrast, Carbon And nItrogen Reservoirs In Soil Subjected To sustaIned InOrgAnic Fertilizer applicAtion Were Unaltered, While Soil OrgAnic Carbon ChemodiversIty Was Observed To Shift To Less RecalcItrAnt Dom Moieties (H/c rAtio > 1.5 And O/c rAtios < 0.5). furTherMore, sustaIned OrgAnic Carbon Amendment Shaped Bcc To a eutroPh.c stAte While Long-term Chemical fertilizAtion Directed The Bcc Towards An oligotroPh.c stAte. Higher connectivIty And Network complexIty Were Observed In OrgAnic Carbon Amended Soils. Dom-Bcc Network Analysis, IndicAtIng thAt Soil Microbes Had More Interaction WIth Dom Molecules followIng sustaIned OrgAnic mAtter Input. These Results Highlight The Potential For OrgAnic Carbon Amendments To Not Only Build Soil Carbon sTocks And Increase Their Resilience, But To Also Improve The Functional stAte Of Soil Microbial communIties. Key Words: Dom, ChemodiversIty, Microbial diversIty, Ft-icr Ms

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