Based on Kunming statistical yearbook and field survey data of agricultural non-point source pollution in counties or districts in the Dianchi Lake basin,advances in the history,current situation and control measures ...Based on Kunming statistical yearbook and field survey data of agricultural non-point source pollution in counties or districts in the Dianchi Lake basin,advances in the history,current situation and control measures of agricultural non-point source pollution in the basin were summarized to provide theoretical and technical support for the thorough improvement of present situation of water pollution in the basin.展开更多
Taking Xinan River basin as research object,the status of agricultural non-point source pollution was analyzed based on field survey,as well as the effect of fertilizer and pesticide leaching and runoff,livestock and ...Taking Xinan River basin as research object,the status of agricultural non-point source pollution was analyzed based on field survey,as well as the effect of fertilizer and pesticide leaching and runoff,livestock and poultry breeding and rural domestic pollution on non-point source TN and TP.At last,some technical countermeasures of controlling non-point source pollution were put forward according to the characteristics of agricultural non-point source pollution in Xinan River basin.展开更多
Based on Kunming statistical yearbook and field survey data of agricultural non-point source pollution in counties or districts in the Dianchi Lake basin,previous and current situation of agricultural production and a...Based on Kunming statistical yearbook and field survey data of agricultural non-point source pollution in counties or districts in the Dianchi Lake basin,previous and current situation of agricultural production and agricultural non-point source pollution control in the Dianchi Lake basin were studied,and countermeasures and suggestions of comprehensive control of agricultural non-point source pollution in the basin were proposed.展开更多
On the basis of investigating rural population, land types, livestock and poultry breeding scale in drinking water conservation area of the Hongfeng Lake in Guiyang City, as well as the urban domestic pol utant discha...On the basis of investigating rural population, land types, livestock and poultry breeding scale in drinking water conservation area of the Hongfeng Lake in Guiyang City, as well as the urban domestic pol utant discharge coefficient, livestock and poultry excretion coefficient, nitrogen fertilizer and phosphate fertilizer loss rate in the first national pollution source survey, this paper tried to explore current situation of agricultural non-point source pollution, and provide scientific support for the pollution control. The results showed that in the drinking water conservation area of the Hongfeng lake in 2013, contribution rate of pollution sources to the water pollution in the Hongfeng Lake followed the sequence "livestock and poultry breeding > rural life > farmland fertilizer". Among all agricultural non-point source pollutants, livestock and poultry breeding pollutants were major pollution sources, with a contribution rate to CODCr, TP and NH3-N in water above 50%; rural domestic pollutants were also important pollution sources, its contribution rate to CODCr and NH3-N was 43.49% and 46.69%, respectively; contribution rate of farmland fertilizer pollutants to TN and TP was 33.76% and 27.71%, respectively, higher than that of rural domestic pollutants(25.87% and 6.75%). Therefore, the control of non-point source pollution within the drinking water conservation area should be enhanced, so as to control the pollution from the source.展开更多
农业测控系统的用户交互性存在改进空间,随着自然语言语义处理技术的不断进步,提升农业测控领域中复杂的控制和查询操作的用户友好性变得至关重要,这有助于降低用户的操作成本。本文提出了一种面向农业测控领域的自然语言接口(agricultu...农业测控系统的用户交互性存在改进空间,随着自然语言语义处理技术的不断进步,提升农业测控领域中复杂的控制和查询操作的用户友好性变得至关重要,这有助于降低用户的操作成本。本文提出了一种面向农业测控领域的自然语言接口(agricultural measurement and control natural language interface,AMC-NLI),旨在改进农业测控平台的用户体验。通过BERT-BiLSTM-ATT-CRF-OPO(bidirectional encoder representations from transformers-bi-directional long shortterm memory-attention-conditional random field)的语义解析模型,识别并提取农业指令中的实体,并进行操作-地点-对象三元组语句(operate-place-object,OPO)的槽填充。使得用户的自然语言输入能够被转化为结构化的三元组语句,实现用户输入的指令转换为相应的参数,并通过物联网网关发送到相应的设备。试验结果表明在AMC-NLI农业测控指令交互方面,该模型表现出色,准确率,精确率、召回率,F值和平均最大响应时间分别达到了91.63%、92.77%、92.48%、91.74%和2.45 s,为农业信息化管控提供了更为便捷的互动方式。展开更多
农业温室综合能源系统(agricultural greenhouse integrated energy system,AGIES)需深入考虑作物安全生长环境条件,优化调控多源设备功率,实现系统经济、低碳运行。提出了一种基于作物安全性的AGIES低碳控制方法,构建含电、气、热AGIE...农业温室综合能源系统(agricultural greenhouse integrated energy system,AGIES)需深入考虑作物安全生长环境条件,优化调控多源设备功率,实现系统经济、低碳运行。提出了一种基于作物安全性的AGIES低碳控制方法,构建含电、气、热AGIES供能架构,建立各农业设备功率模型,阐明能量流和功率耦合设备的能量转换机制。研究农作物生长的光照、温度、供水安全边界条件,提出作物的日光照量与小时光照量合理范围、室内恒温供热功率范围、科学供水用电功率范围与用电时间范围,并采用数学模型详细描述。提出了电、气、热碳排放核算指标,建立综合运行成本和碳排放成本最低的功率优化控制模型,采用粒子群算法求解,得到优化用能方案。通过算例仿真验证了所提方法的可行性和有效性。展开更多
基金Supported by Research on the Comprehensive Control Measures of Agricultural Non-point Source Pollution in the Dianchi Lake Basin Funded by Kunming Agricultural Bureau(2016JC01)Project of Yunnan Engineering Research Center for Urban Characteristic Agriculture(TSNY0201)+4 种基金Scientific Research Foundation of Yunnan Department of Education(2014Y390)Application Base Research Project for Young Scholars of Yunnan Province(2013FD040)Talent Introduction Project of Kunming University(YJL14005),Talent Introduction Foundation of Kunming University(YJL12010),Key Foundation of Kunming University(XJL12020),Scientific Research Project for Undergraduates of Kunming University(XJD16081)Research on the Ecology and Rational Distribution of Main Cultivars in Producing Areas of Raw Materials of China Tobacco in Yunnan ProvinceProject of Construction of the Dominant Key Subject(Ecology)in Universities and Colleges in Yunnan Province(05000511311)
文摘Based on Kunming statistical yearbook and field survey data of agricultural non-point source pollution in counties or districts in the Dianchi Lake basin,advances in the history,current situation and control measures of agricultural non-point source pollution in the basin were summarized to provide theoretical and technical support for the thorough improvement of present situation of water pollution in the basin.
文摘Taking Xinan River basin as research object,the status of agricultural non-point source pollution was analyzed based on field survey,as well as the effect of fertilizer and pesticide leaching and runoff,livestock and poultry breeding and rural domestic pollution on non-point source TN and TP.At last,some technical countermeasures of controlling non-point source pollution were put forward according to the characteristics of agricultural non-point source pollution in Xinan River basin.
基金Supported by Research on the Comprehensive Control Measures of Agricultural Non-point Source Pollution in the Dianchi Lake Basin Funded by Kunming Agricultural Bureau(2016JC01)Project of Yunnan Engineering Research Center for Urban Characteristic Agriculture(TSNY0201)+7 种基金Scientific Research Foundation of Yunnan Department of Education(2014Y390)Application Base Research Project for Young Scholars of Yunnan Province(2013FD040)Talent Introduction Project of Kunming University(YJL14005)Talent Introduction Foundation of Kunming University(YJL12010)Key Foundation of Kunming University(XJL12020)Scientific Research Project for Undergraduates of Kunming University(XJD16081)Research on the Ecology and Rational Distribution of Main Cultivars in Producing Areas of Raw Materials of China Tobacco in Yunnan ProvinceProject of Construction of the Dominant Key Subject(Ecology)in Universities and Colleges in Yunnan Province(05000511311)
文摘Based on Kunming statistical yearbook and field survey data of agricultural non-point source pollution in counties or districts in the Dianchi Lake basin,previous and current situation of agricultural production and agricultural non-point source pollution control in the Dianchi Lake basin were studied,and countermeasures and suggestions of comprehensive control of agricultural non-point source pollution in the basin were proposed.
基金Sponsored by Significant Scientific and Technological Program of Guizhou Province([2015]2001)
文摘On the basis of investigating rural population, land types, livestock and poultry breeding scale in drinking water conservation area of the Hongfeng Lake in Guiyang City, as well as the urban domestic pol utant discharge coefficient, livestock and poultry excretion coefficient, nitrogen fertilizer and phosphate fertilizer loss rate in the first national pollution source survey, this paper tried to explore current situation of agricultural non-point source pollution, and provide scientific support for the pollution control. The results showed that in the drinking water conservation area of the Hongfeng lake in 2013, contribution rate of pollution sources to the water pollution in the Hongfeng Lake followed the sequence "livestock and poultry breeding > rural life > farmland fertilizer". Among all agricultural non-point source pollutants, livestock and poultry breeding pollutants were major pollution sources, with a contribution rate to CODCr, TP and NH3-N in water above 50%; rural domestic pollutants were also important pollution sources, its contribution rate to CODCr and NH3-N was 43.49% and 46.69%, respectively; contribution rate of farmland fertilizer pollutants to TN and TP was 33.76% and 27.71%, respectively, higher than that of rural domestic pollutants(25.87% and 6.75%). Therefore, the control of non-point source pollution within the drinking water conservation area should be enhanced, so as to control the pollution from the source.
文摘农业测控系统的用户交互性存在改进空间,随着自然语言语义处理技术的不断进步,提升农业测控领域中复杂的控制和查询操作的用户友好性变得至关重要,这有助于降低用户的操作成本。本文提出了一种面向农业测控领域的自然语言接口(agricultural measurement and control natural language interface,AMC-NLI),旨在改进农业测控平台的用户体验。通过BERT-BiLSTM-ATT-CRF-OPO(bidirectional encoder representations from transformers-bi-directional long shortterm memory-attention-conditional random field)的语义解析模型,识别并提取农业指令中的实体,并进行操作-地点-对象三元组语句(operate-place-object,OPO)的槽填充。使得用户的自然语言输入能够被转化为结构化的三元组语句,实现用户输入的指令转换为相应的参数,并通过物联网网关发送到相应的设备。试验结果表明在AMC-NLI农业测控指令交互方面,该模型表现出色,准确率,精确率、召回率,F值和平均最大响应时间分别达到了91.63%、92.77%、92.48%、91.74%和2.45 s,为农业信息化管控提供了更为便捷的互动方式。
文摘农业温室综合能源系统(agricultural greenhouse integrated energy system,AGIES)需深入考虑作物安全生长环境条件,优化调控多源设备功率,实现系统经济、低碳运行。提出了一种基于作物安全性的AGIES低碳控制方法,构建含电、气、热AGIES供能架构,建立各农业设备功率模型,阐明能量流和功率耦合设备的能量转换机制。研究农作物生长的光照、温度、供水安全边界条件,提出作物的日光照量与小时光照量合理范围、室内恒温供热功率范围、科学供水用电功率范围与用电时间范围,并采用数学模型详细描述。提出了电、气、热碳排放核算指标,建立综合运行成本和碳排放成本最低的功率优化控制模型,采用粒子群算法求解,得到优化用能方案。通过算例仿真验证了所提方法的可行性和有效性。