检索结果-南通市图书馆

Effects of sulfur fertilization and short-term high temperature on wheat grain production and wheat flour proteins

The Crop Journal 2018年第4期6卷 413-425页

作者： zhiqiang tao Xuhong Chang Demei Wang Yanjie Wang Shaokang Ma Yushuang Yang Guangcai Zhao Institute of Crop Sciences Chinese Academy of Agricultural Sciences Key Laboratory of Crop Physiology and Ecology Ministry of Agriculture

The content of wheat flour proteins affects the quality of wheat flour. Sulfur nutrition in wheat can change the protein content of the flour. The inconsistency and instability of wheat grain quality during grain filling under high temperature stress(HTS) are a major challenge to the production of high-quality wheat. The effects of sulfur fertilization and HTS on wheat flour protein and its components are unknown. In this study, treatments varying two factors: sulfur fertilization and exposure to short-term HTS, at 20 days postanthesis, were applied to two wheat cultivars with differing gluten types. Plants of a stronggluten wheat(Gaoyou 2018) and a medium-gluten wheat(Zhongmai 8) were grown in pots in Beijing in 2015–2017. HTS significantly increased the contents of total protein, albumin,gliadin, glutenin, Cys, and Met in wheat kernels, but reduced grain yield, grain weight,protein yield, globulin content, and total starch accumulation. The HTS-induced increase in total protein amount was closely associated with nitrate reductase(NR) and glutamine synthetase(GS) activities in flag leaves. Sulfur fertilization increased grain and protein yields; grain weight; total protein, albumin, gliadin, glutenin, and globulin contents; protein yield; total starch; Cys, Met; and NR and GS activities. HTS and sulfur fertilization had larger effects on the strong-than on the medium-gluten cultivar. Sulfur fertilization also alleviated the negative effects of HTS on grain yield, protein yield, and starch ***, growing wheat with additional soil sulfur can improve the quality of the flour.

关键词： Triticum aestivum L. Sulfur fertilization Strong gluten Climate warming

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Tillage and straw mulching impacts on grain yield and water use efficiency of spring maize in Northern Huang–Huai–Hai Valley

引用

The Crop Journal 2015年第5期3卷 445-450页

作者： zhiqiang tao Congfeng Li Jingjing Li Zaisong Ding Jie Xu Xuefang Sun Peilu Zhou Ming Zhao Institute of Crop Science Chinese Academy of Agricultural Sciences/Key Laboratory of Crop Physiology and Ecology Ministry of Agriculture

A two-year field experiment(2012–2013) was conducted to investigate the effects of two tillage methods and five maize straw mulching patterns on the yield, water consumption,and water use efficiency(WUE) of spring maize(Zea mays L.) in the northern Huang–Huai–Hai valley of China. Compared to rotary tillage, subsoil tillage resulted in decreases in water consumption by 6.3–7.8% and increases in maize yield by 644.5–673.9 kg ha-1, soil water content by 2.9–3.0%, and WUE by 12.7–15.2%. Chopped straw mulching led to higher yield,soil water content, and WUE as well as lower water consumption than prostrate whole straw mulching. Mulching with 50% chopped straw had the largest positive effects on maize yield, soil water content, and WUE among the five mulching treatments. Tillage had greater influence on maize yield than straw mulching, whereas straw mulching had greater influence on soil water content, water consumption, and WUE than tillage. These results suggest that 50% chopped straw mulching with subsoil tillage is beneficial in spring maize production aiming at high yield and high WUE in the Huang–Huai–Hai valley.

关键词： Northern Huang–Huai–Hai valley Spring maize croppi

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effects of tridimensional uniform sowing on water consumption, nitrogen use, and yield in winter wheat

引用

The Crop Journal 2019年第4期7卷 480-493页

作者： zhiqiang tao Shaokang Ma Xuhong Chang Demei Wang Yanjie Wang Yushuang Yang Guangcai Zhao Jiancang Yang Institute of Crop Sciences Chinese Academy of Agricultural Sciences Key Laboratory of Crop Physiology and Ecology Ministry of Agriculture and Rural Affairs

Wheat is a staple crop worldwide, but yields may diminish as climate change causes increasingly unpredictable patterns of precipitation and soil nutrient availability. Farmers are thus challenged to maximize planting efficiency to increase yield, while also improving their resource use efficiency. In this study the effectiveness of tridimensional uniform sowing was tested across a range of planting densities for winter wheat crops on the North China Plain. Tridimensional uniform sowing was tested against conventional drilling at three planting densities (180 × 104, 270 × 104, and 360 × 104 plants ha 1) and assessed for water consumption, biomass, nitrogen uptake and allocation, and aspects of yield. The tridimensional uniform sowing treatment outperformed the conventional drilling treatment in most metrics and at most planting densities, while performing markedly better at higher planting densities. Water consumption decreased and nitrogen efficiency increased. Tiller number and percentage of productive tillers, leaf area index, dry weight, and yield increased without a significant decline in grain protein. Nitrogen allocation was more efficient under tridimensional uniform sowing than with conventional drilling, and also varied according to annual precipitation and planting density. Both yield and grain protein contents were significantly correlated with the amount of pre-anthesis accumu- lated nitrogen translocated from vegetative organs to kernels after anthesis. Overall, a density of 270 × 104 plants ha 1 provided the highest water use efficiency and grain yield. Tridimensional uniform sowing will benefit farmers by forming stronger overall crops, promoting the coordinated improvement of yield, nitrogen uptake and efficiency, and increasing grain protein content at higher planting densities.

关键词： Winter wheat Sowing pattern Nitrogen absorption and utilization Yield Grain protein content

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A saliency model based on wavelet transform and visual attention

引用

Science China(Information Sciences) 2010年第4期53卷 738-751页

作者： LI zhiqiang, FANG tao* & HUO Hong Institute of Image Processing and Pattern Recognition, Shanghai Jiaotong University, Shanghai 200240, China 1. Institute of Image Processing and Pattern Recognition Shanghai Jiaotong University Shanghai 200240 China

This paper presents a novel wavelet transform saliency model to detect salient objects. In this model, a saliency map is generated by combining orientation feature maps obtained from wavelet transform of different scale images derived from the same image. Then, the order map of a saliency map is obtained by using Fourier descriptor, which could be used as a guidance to process the most important objects. Experiments indicate that this saliency model is robust to noise and superior to other saliency models in the literature.

关键词： bottom-up attentional mechanism center-surround inhibition phenomenon Fourier descriptor top-down attentional mechanism visual attention wavelet transform

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Brief discussion of spirit in medical science

Brief discussion of spirit in medical science

引用

2019年浙江省神经外科学学术大会

作者： zhiqiang tao Department of Neurosurgery Yiwu central hospitalWenzhou medical college

Objective To discuss The actual connotation for the spirit in the medical *** Combining modern medical development Logical inference it based on Chinese medical *** The spirit is electricity *** is a micro storage battery which producing electromagnetic *** (Main and collateral channels) is one of electromagnetic field *** electricity which exist before the time of birth were called YUANSHEN,them existed at heart and brain.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Inversion of maize leaf nitrogen using UAV hyperspectral imagery in breeding fields

引用

International Journal of Agricultural and Biological Engineering 2024年第3期17卷 144-155页

作者： Qiwen Cheng Bingsun Wu Huichun Ye Yongyi Liang Yingpu Che Anting Guo Zixuan Wang zhiqiang tao Wenwei Li Jingjing Wang School of Tropical Agriculture and Forestry Hainan UniversityHaikou 570228China Rubber Research Institute Chinese Academy of Tropical Agricultural SciencesHaikou 571101China Key Laboratory of Earth Observation of Hainan Province Hainan Aerospace Information Research InstituteSanya 572029HainanChina Key Laboratory of Digital Earth Science Aerospace Information Research InstituteChinese Academy of SciencesBeijing 100094China Institute of Crop Science Chinese Academy of Agricultural SciencesBeijing 100081China

Nitrogen(N)as a pivotal factor in influencing the growth,development,and yield of *** the N status of maize rapidly and non-destructive and real-time is meaningful in fertilization management of agriculture,based on unmanned aerial vehicle(UAV)remote sensing *** this study,the hyperspectral images were acquired by UAV and the leaf nitrogen content(LNC)and leaf nitrogen accumulation(LNA)were measured to estimate the N nutrition status of maize.24 vegetation indices(VIs)were constructed using hyperspectral images,and four prediction models were used to estimate the LNC and LNA of *** models include a single linear regression model,multivariable linear regression(MLR)model,random forest regression(RFR)model,and support vector regression(SVR)***,the model with the highest prediction accuracy was applied to invert the LNC and LNA of maize in breeding *** results of the single linear regression model with 24 VIs showed that normalized difference chlorophyll(NDchl)had the highest prediction accuracy for LNC(R^(2),RMSE,and RE were 0.72,0.21,and 12.19%,respectively)and LNA(R^(2),RMSE,and RE were 0.77,0.26,and 14.34%,respectively).And then,24 VIs were divided into 13 important VIs and 11 unimportant *** prediction models for LNC and LNA were constructed using 13 important VIs,and the results showed that RFR and SVR models significantly enhanced the prediction accuracy of LNC and LNA compared to the multivariable linear regression model,in which RFR model had the highest prediction accuracy for the validation dataset of LNC(R^(2),RMSE,and RE were 0.78,0.16,and 8.83%,respectively)and LNA(R^(2),RMSE,and RE were 0.85,0.19,and 9.88%,respectively).This study provides a theoretical basis for N diagnosis and precise management of crop production based on hyperspectral remote sensing in precision agriculture.

关键词： maize nitrogen hyperspectral imagery vegetation index UAV random forest regression support vector regression

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

尉迟寺遗址大汶口文化晚期葬俗刍议

引用

四川文物 2009年第3期 41-44页

作者：陶治强安徽省淮南市博物馆

尉迟寺遗址位于安徽省蒙城县许町镇毕集村东约200米处。遗址保存较为完整、规模较大,文化内涵是以大汶口文化为主的原始社会聚落遗存。从1989年至今,中国社会科学院考古研究所安徽工作队对其先后进行了13次发掘,共清理出房迹78间,墓葬30... 详细信息

尉迟寺遗址位于安徽省蒙城县许町镇毕集村东约200米处。遗址保存较为完整、规模较大,文化内涵是以大汶口文化为主的原始社会聚落遗存。从1989年至今,中国社会科学院考古研究所安徽工作队对其先后进行了13次发掘,共清理出房迹78间,墓葬300余座及大量的灰坑、祭祀坑等。出土各种石器、陶器、骨器、蚌器等珍贵文物近万件,为研究皖北地区原始社会中、晚期的历史提供了十分重要的资料。本文主要从该遗址的大汶口晚期墓葬葬制葬俗方面进行论述,从其宗教信仰、社会风俗、人口结构、生产生活入手,探讨尉迟寺遗址的文化性质及它与周边地区其他文化的联系。

关键词：尉迟寺大汶口文化晚期葬制葬俗

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Synthesis and Characterization of Novel Multiaromatic Epoxy Resins

Synthesis and Characterization of Novel Multiaromatic Epoxy ...

引用

第六届国际高技术高分子材料学术会议

作者： tao Song zhiqiang tao Shiyong Yang* Laboratory of Advanced Polymer Materials Institute of Chemistry Chinese Academy of Sciences

＜正＞Epoxy materials,usually composed of epoxy resin,hardener and additives such as filler and curing promoter,are widely used as printed circuit boards and encapsulation materials for electronic devices

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

社会激励与社会正义——柯亨对罗尔斯差别原则的批判及其反思

引用

湖北社会科学 2024年第1期 165-172页

作者：陶志强罗伯中湘潭大学哲学系湖南湘潭411105

柯亨认为罗尔斯的激励论证会使其差别原则被滥用,使正义成为社会贪欲的借口;基于激励基础上的差别原则会对社会效益产生极大影响,但“帕累托论证”对差别原则正义性的证明是不成功的。柯亨对激励问题的批判只是一种形而上学的观念论,对... 详细信息

柯亨认为罗尔斯的激励论证会使其差别原则被滥用,使正义成为社会贪欲的借口;基于激励基础上的差别原则会对社会效益产生极大影响,但“帕累托论证”对差别原则正义性的证明是不成功的。柯亨对激励问题的批判只是一种形而上学的观念论,对绝对正义和相对正义的关系、伦理基本规范与社会基本事实的关系的理解陷入了一种形而上学的先验观念论之中,他没有看到平等在正义体系之中并不优先于互助、共享和人的全面发展等诸多价值。

关键词：约翰·罗尔斯柯亨激励论证帕累托论证平等

来源：

维普期刊数据库博看期刊

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

应用于工业余热的超临界二氧化碳布雷顿循环系统的热力学和[火用]分析

引用

中国电机工程学报 2019年第23期39卷 6944-6951页

作者：陶志强赵庆唐豪杰吴家桦中国东方电气集团有限公司中央研究院

自主开发了一套基于分流再压缩的超临界CO2布雷顿循环的工业余热利用数值模拟程序,并结合?分析原理深入挖掘各参数对系统性能影响的内部机制。发现在任意选定状态参数下,存在一个最佳分流比使得热效率和?效率同时达到最优。透平入口温... 详细信息

自主开发了一套基于分流再压缩的超临界CO2布雷顿循环的工业余热利用数值模拟程序,并结合?分析原理深入挖掘各参数对系统性能影响的内部机制。发现在任意选定状态参数下,存在一个最佳分流比使得热效率和?效率同时达到最优。透平入口温度变化对最佳分流比不造成影响。提高透平入口温度始终对系统最佳热效率和?效率起到积极促进作用。最佳分流比随主压缩出口压力的提高而单调递减。系统最佳热效率?效率随主压缩机出口压力提高先增加后趋缓,在低压段(15~23MPa)增加明显。随着压力的提高,系统?损失率的减少基本上是由高温回热器贡献的。最佳分流比随着主压缩机入口温度的提高而降低。主压缩机出口压力达25MPa时,主压缩机入口温度提高2℃,最佳热效率和?效率分别下降约3%和5%。主压缩机入口温度提高造成系统性能恶化的结果主要是通过预冷器的?损失率增加实现的。

关键词：超临界二氧化碳布雷顿循环余热利用 [火用]分析

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：